./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix037_power.oepc_pso.oepc_rmo.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4103b43f-2b9e-4d5f-9b6b-0449f2a5dde0/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4103b43f-2b9e-4d5f-9b6b-0449f2a5dde0/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4103b43f-2b9e-4d5f-9b6b-0449f2a5dde0/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4103b43f-2b9e-4d5f-9b6b-0449f2a5dde0/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix037_power.oepc_pso.oepc_rmo.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4103b43f-2b9e-4d5f-9b6b-0449f2a5dde0/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4103b43f-2b9e-4d5f-9b6b-0449f2a5dde0/bin/uautomizer-TMbwUNV5ro --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 82646a2180350347ed217a12e2836ec5fdce4b0371f5e0f7afa776fd6812fa0f --- 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-8393723 [2022-11-18 18:42:48,271 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 18:42:48,273 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 18:42:48,299 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 18:42:48,299 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 18:42:48,300 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 18:42:48,302 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 18:42:48,312 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 18:42:48,315 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 18:42:48,321 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 18:42:48,322 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 18:42:48,324 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 18:42:48,325 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 18:42:48,328 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 18:42:48,330 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 18:42:48,333 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 18:42:48,334 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 18:42:48,335 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 18:42:48,337 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 18:42:48,344 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 18:42:48,345 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 18:42:48,347 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 18:42:48,350 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 18:42:48,351 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 18:42:48,359 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 18:42:48,360 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 18:42:48,360 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 18:42:48,362 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 18:42:48,362 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 18:42:48,364 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 18:42:48,365 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 18:42:48,366 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 18:42:48,368 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 18:42:48,369 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 18:42:48,371 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 18:42:48,371 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 18:42:48,372 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 18:42:48,372 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 18:42:48,373 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 18:42:48,374 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 18:42:48,374 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 18:42:48,375 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4103b43f-2b9e-4d5f-9b6b-0449f2a5dde0/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 18:42:48,415 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 18:42:48,416 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 18:42:48,416 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 18:42:48,416 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 18:42:48,417 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 18:42:48,417 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 18:42:48,418 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 18:42:48,418 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 18:42:48,418 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 18:42:48,422 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 18:42:48,423 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 18:42:48,423 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 18:42:48,423 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 18:42:48,423 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 18:42:48,423 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 18:42:48,424 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 18:42:48,424 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 18:42:48,424 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 18:42:48,424 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 18:42:48,424 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 18:42:48,424 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 18:42:48,425 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 18:42:48,425 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 18:42:48,425 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 18:42:48,426 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:42:48,426 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 18:42:48,427 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 18:42:48,428 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 18:42:48,428 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 18:42:48,428 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 18:42:48,428 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 18:42:48,428 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 18:42:48,429 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 18:42:48,429 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_4103b43f-2b9e-4d5f-9b6b-0449f2a5dde0/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4103b43f-2b9e-4d5f-9b6b-0449f2a5dde0/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 82646a2180350347ed217a12e2836ec5fdce4b0371f5e0f7afa776fd6812fa0f [2022-11-18 18:42:48,778 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 18:42:48,814 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 18:42:48,817 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 18:42:48,819 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 18:42:48,820 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 18:42:48,821 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4103b43f-2b9e-4d5f-9b6b-0449f2a5dde0/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/pthread-wmm/mix037_power.oepc_pso.oepc_rmo.oepc.i [2022-11-18 18:42:48,902 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4103b43f-2b9e-4d5f-9b6b-0449f2a5dde0/bin/uautomizer-TMbwUNV5ro/data/ec0435423/becfef14c41545e6b7cc7c653b2dc24f/FLAGa7039ed47 [2022-11-18 18:42:49,519 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 18:42:49,522 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4103b43f-2b9e-4d5f-9b6b-0449f2a5dde0/sv-benchmarks/c/pthread-wmm/mix037_power.oepc_pso.oepc_rmo.oepc.i [2022-11-18 18:42:49,548 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4103b43f-2b9e-4d5f-9b6b-0449f2a5dde0/bin/uautomizer-TMbwUNV5ro/data/ec0435423/becfef14c41545e6b7cc7c653b2dc24f/FLAGa7039ed47 [2022-11-18 18:42:49,763 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4103b43f-2b9e-4d5f-9b6b-0449f2a5dde0/bin/uautomizer-TMbwUNV5ro/data/ec0435423/becfef14c41545e6b7cc7c653b2dc24f [2022-11-18 18:42:49,767 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 18:42:49,769 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 18:42:49,774 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 18:42:49,774 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 18:42:49,778 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 18:42:49,779 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:42:49" (1/1) ... [2022-11-18 18:42:49,781 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73ee64c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:42:49, skipping insertion in model container [2022-11-18 18:42:49,781 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:42:49" (1/1) ... [2022-11-18 18:42:49,789 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 18:42:49,869 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:42:50,128 WARN L234 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_4103b43f-2b9e-4d5f-9b6b-0449f2a5dde0/sv-benchmarks/c/pthread-wmm/mix037_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2022-11-18 18:42:50,450 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:42:50,463 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 18:42:50,481 WARN L234 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_4103b43f-2b9e-4d5f-9b6b-0449f2a5dde0/sv-benchmarks/c/pthread-wmm/mix037_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2022-11-18 18:42:50,558 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:42:50,593 INFO L208 MainTranslator]: Completed translation [2022-11-18 18:42:50,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:42:50 WrapperNode [2022-11-18 18:42:50,594 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 18:42:50,595 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 18:42:50,595 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 18:42:50,595 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 18:42:50,603 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:42:50" (1/1) ... [2022-11-18 18:42:50,637 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:42:50" (1/1) ... [2022-11-18 18:42:50,674 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 146 [2022-11-18 18:42:50,678 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 18:42:50,679 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 18:42:50,679 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 18:42:50,679 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 18:42:50,689 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:42:50" (1/1) ... [2022-11-18 18:42:50,689 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:42:50" (1/1) ... [2022-11-18 18:42:50,703 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:42:50" (1/1) ... [2022-11-18 18:42:50,704 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:42:50" (1/1) ... [2022-11-18 18:42:50,713 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:42:50" (1/1) ... [2022-11-18 18:42:50,731 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:42:50" (1/1) ... [2022-11-18 18:42:50,733 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:42:50" (1/1) ... [2022-11-18 18:42:50,743 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:42:50" (1/1) ... [2022-11-18 18:42:50,756 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 18:42:50,757 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 18:42:50,759 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 18:42:50,759 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 18:42:50,760 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:42:50" (1/1) ... [2022-11-18 18:42:50,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:42:50,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4103b43f-2b9e-4d5f-9b6b-0449f2a5dde0/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:42:50,800 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4103b43f-2b9e-4d5f-9b6b-0449f2a5dde0/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 18:42:50,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4103b43f-2b9e-4d5f-9b6b-0449f2a5dde0/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 18:42:50,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 18:42:50,852 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-18 18:42:50,852 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 18:42:50,853 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 18:42:50,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 18:42:50,853 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-11-18 18:42:50,853 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-11-18 18:42:50,853 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-11-18 18:42:50,854 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-11-18 18:42:50,855 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-11-18 18:42:50,855 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-11-18 18:42:50,855 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-11-18 18:42:50,856 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-11-18 18:42:50,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 18:42:50,856 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-18 18:42:50,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 18:42:50,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 18:42:50,858 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 18:42:51,027 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 18:42:51,029 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 18:42:51,432 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 18:42:51,581 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 18:42:51,582 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-18 18:42:51,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:42:51 BoogieIcfgContainer [2022-11-18 18:42:51,591 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 18:42:51,594 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 18:42:51,594 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 18:42:51,599 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 18:42:51,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:42:49" (1/3) ... [2022-11-18 18:42:51,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18b43271 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:42:51, skipping insertion in model container [2022-11-18 18:42:51,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:42:50" (2/3) ... [2022-11-18 18:42:51,601 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18b43271 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:42:51, skipping insertion in model container [2022-11-18 18:42:51,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:42:51" (3/3) ... [2022-11-18 18:42:51,603 INFO L112 eAbstractionObserver]: Analyzing ICFG mix037_power.oepc_pso.oepc_rmo.oepc.i [2022-11-18 18:42:51,612 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 18:42:51,624 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 18:42:51,624 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-18 18:42:51,625 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 18:42:51,733 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-18 18:42:51,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 151 places, 140 transitions, 300 flow [2022-11-18 18:42:51,884 INFO L130 PetriNetUnfolder]: 2/136 cut-off events. [2022-11-18 18:42:51,885 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 18:42:51,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 136 events. 2/136 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 75 event pairs, 0 based on Foata normal form. 0/132 useless extension candidates. Maximal degree in co-relation 93. Up to 2 conditions per place. [2022-11-18 18:42:51,892 INFO L82 GeneralOperation]: Start removeDead. Operand has 151 places, 140 transitions, 300 flow [2022-11-18 18:42:51,901 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 147 places, 136 transitions, 284 flow [2022-11-18 18:42:51,920 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:42:51,930 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;@29c84e1b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:42:51,931 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-11-18 18:42:51,954 INFO L130 PetriNetUnfolder]: 0/52 cut-off events. [2022-11-18 18:42:51,955 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 18:42:51,955 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:42:51,956 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:42:51,957 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:42:51,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:51,963 INFO L85 PathProgramCache]: Analyzing trace with hash 2049139391, now seen corresponding path program 1 times [2022-11-18 18:42:51,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:42:51,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462468354] [2022-11-18 18:42:51,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:51,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:42:52,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:52,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:42:52,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:42:52,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462468354] [2022-11-18 18:42:52,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462468354] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:42:52,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:42:52,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:42:52,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915004949] [2022-11-18 18:42:52,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:42:52,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:42:52,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:42:52,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:42:52,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:42:52,641 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 140 [2022-11-18 18:42:52,645 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 136 transitions, 284 flow. Second operand has 3 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:42:52,645 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:42:52,645 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 140 [2022-11-18 18:42:52,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:42:52,978 INFO L130 PetriNetUnfolder]: 162/624 cut-off events. [2022-11-18 18:42:52,978 INFO L131 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2022-11-18 18:42:52,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 930 conditions, 624 events. 162/624 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3485 event pairs, 132 based on Foata normal form. 46/628 useless extension candidates. Maximal degree in co-relation 871. Up to 191 conditions per place. [2022-11-18 18:42:52,992 INFO L137 encePairwiseOnDemand]: 135/140 looper letters, 18 selfloop transitions, 2 changer transitions 0/140 dead transitions. [2022-11-18 18:42:52,992 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 140 transitions, 341 flow [2022-11-18 18:42:52,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:42:52,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 18:42:53,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 397 transitions. [2022-11-18 18:42:53,005 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9452380952380952 [2022-11-18 18:42:53,006 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 397 transitions. [2022-11-18 18:42:53,007 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 397 transitions. [2022-11-18 18:42:53,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:42:53,011 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 397 transitions. [2022-11-18 18:42:53,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 132.33333333333334) internal successors, (397), 3 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:42:53,021 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:42:53,021 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:42:53,023 INFO L175 Difference]: Start difference. First operand has 147 places, 136 transitions, 284 flow. Second operand 3 states and 397 transitions. [2022-11-18 18:42:53,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 140 transitions, 341 flow [2022-11-18 18:42:53,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 140 transitions, 334 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 18:42:53,032 INFO L231 Difference]: Finished difference. Result has 143 places, 132 transitions, 276 flow [2022-11-18 18:42:53,034 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=276, PETRI_PLACES=143, PETRI_TRANSITIONS=132} [2022-11-18 18:42:53,038 INFO L288 CegarLoopForPetriNet]: 147 programPoint places, -4 predicate places. [2022-11-18 18:42:53,038 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 132 transitions, 276 flow [2022-11-18 18:42:53,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:42:53,039 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:42:53,039 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:42:53,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 18:42:53,040 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:42:53,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:53,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1525342935, now seen corresponding path program 1 times [2022-11-18 18:42:53,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:42:53,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838832598] [2022-11-18 18:42:53,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:53,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:42:53,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:53,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:42:53,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:42:53,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838832598] [2022-11-18 18:42:53,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838832598] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:42:53,620 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:42:53,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 18:42:53,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741201560] [2022-11-18 18:42:53,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:42:53,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 18:42:53,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:42:53,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 18:42:53,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 18:42:53,624 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 140 [2022-11-18 18:42:53,625 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 132 transitions, 276 flow. Second operand has 7 states, 7 states have (on average 110.28571428571429) internal successors, (772), 7 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:42:53,626 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:42:53,626 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 140 [2022-11-18 18:42:53,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:42:57,737 INFO L130 PetriNetUnfolder]: 8438/18954 cut-off events. [2022-11-18 18:42:57,737 INFO L131 PetriNetUnfolder]: For 569/569 co-relation queries the response was YES. [2022-11-18 18:42:57,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31321 conditions, 18954 events. 8438/18954 cut-off events. For 569/569 co-relation queries the response was YES. Maximal size of possible extension queue 788. Compared 188323 event pairs, 904 based on Foata normal form. 0/18623 useless extension candidates. Maximal degree in co-relation 31259. Up to 4757 conditions per place. [2022-11-18 18:42:57,864 INFO L137 encePairwiseOnDemand]: 129/140 looper letters, 42 selfloop transitions, 7 changer transitions 110/250 dead transitions. [2022-11-18 18:42:57,864 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 250 transitions, 818 flow [2022-11-18 18:42:57,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 18:42:57,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-18 18:42:57,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1553 transitions. [2022-11-18 18:42:57,870 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8532967032967033 [2022-11-18 18:42:57,871 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1553 transitions. [2022-11-18 18:42:57,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1553 transitions. [2022-11-18 18:42:57,872 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:42:57,872 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1553 transitions. [2022-11-18 18:42:57,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 119.46153846153847) internal successors, (1553), 13 states have internal predecessors, (1553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:42:57,883 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 140.0) internal successors, (1960), 14 states have internal predecessors, (1960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:42:57,884 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 140.0) internal successors, (1960), 14 states have internal predecessors, (1960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:42:57,884 INFO L175 Difference]: Start difference. First operand has 143 places, 132 transitions, 276 flow. Second operand 13 states and 1553 transitions. [2022-11-18 18:42:57,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 250 transitions, 818 flow [2022-11-18 18:42:57,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 250 transitions, 800 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 18:42:57,891 INFO L231 Difference]: Finished difference. Result has 165 places, 123 transitions, 344 flow [2022-11-18 18:42:57,891 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=344, PETRI_PLACES=165, PETRI_TRANSITIONS=123} [2022-11-18 18:42:57,892 INFO L288 CegarLoopForPetriNet]: 147 programPoint places, 18 predicate places. [2022-11-18 18:42:57,892 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 123 transitions, 344 flow [2022-11-18 18:42:57,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 110.28571428571429) internal successors, (772), 7 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:42:57,893 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:42:57,893 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:42:57,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 18:42:57,894 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:42:57,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:57,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1778137, now seen corresponding path program 1 times [2022-11-18 18:42:57,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:42:57,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774326285] [2022-11-18 18:42:57,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:57,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:42:57,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:58,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:42:58,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:42:58,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774326285] [2022-11-18 18:42:58,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774326285] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:42:58,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:42:58,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 18:42:58,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413081892] [2022-11-18 18:42:58,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:42:58,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 18:42:58,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:42:58,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 18:42:58,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 18:42:58,231 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 140 [2022-11-18 18:42:58,232 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 123 transitions, 344 flow. Second operand has 7 states, 7 states have (on average 110.42857142857143) internal successors, (773), 7 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:42:58,232 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:42:58,232 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 140 [2022-11-18 18:42:58,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:43:01,307 INFO L130 PetriNetUnfolder]: 6025/10757 cut-off events. [2022-11-18 18:43:01,308 INFO L131 PetriNetUnfolder]: For 20898/20989 co-relation queries the response was YES. [2022-11-18 18:43:01,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32716 conditions, 10757 events. 6025/10757 cut-off events. For 20898/20989 co-relation queries the response was YES. Maximal size of possible extension queue 555. Compared 81770 event pairs, 1750 based on Foata normal form. 214/10690 useless extension candidates. Maximal degree in co-relation 32642. Up to 4022 conditions per place. [2022-11-18 18:43:01,421 INFO L137 encePairwiseOnDemand]: 128/140 looper letters, 45 selfloop transitions, 15 changer transitions 85/236 dead transitions. [2022-11-18 18:43:01,422 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 236 transitions, 1236 flow [2022-11-18 18:43:01,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 18:43:01,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-18 18:43:01,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1547 transitions. [2022-11-18 18:43:01,426 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.85 [2022-11-18 18:43:01,427 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1547 transitions. [2022-11-18 18:43:01,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1547 transitions. [2022-11-18 18:43:01,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:43:01,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1547 transitions. [2022-11-18 18:43:01,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 119.0) internal successors, (1547), 13 states have internal predecessors, (1547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:01,437 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 140.0) internal successors, (1960), 14 states have internal predecessors, (1960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:01,439 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 140.0) internal successors, (1960), 14 states have internal predecessors, (1960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:01,439 INFO L175 Difference]: Start difference. First operand has 165 places, 123 transitions, 344 flow. Second operand 13 states and 1547 transitions. [2022-11-18 18:43:01,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 236 transitions, 1236 flow [2022-11-18 18:43:01,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 236 transitions, 1184 flow, removed 24 selfloop flow, removed 4 redundant places. [2022-11-18 18:43:01,578 INFO L231 Difference]: Finished difference. Result has 161 places, 130 transitions, 467 flow [2022-11-18 18:43:01,579 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=467, PETRI_PLACES=161, PETRI_TRANSITIONS=130} [2022-11-18 18:43:01,581 INFO L288 CegarLoopForPetriNet]: 147 programPoint places, 14 predicate places. [2022-11-18 18:43:01,581 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 130 transitions, 467 flow [2022-11-18 18:43:01,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 110.42857142857143) internal successors, (773), 7 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:01,582 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:43:01,583 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:43:01,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 18:43:01,583 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:43:01,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:01,585 INFO L85 PathProgramCache]: Analyzing trace with hash -824660954, now seen corresponding path program 1 times [2022-11-18 18:43:01,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:43:01,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317346951] [2022-11-18 18:43:01,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:01,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:43:01,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:01,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:43:01,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:43:01,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317346951] [2022-11-18 18:43:01,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317346951] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:43:01,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:43:01,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 18:43:01,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861409118] [2022-11-18 18:43:01,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:43:01,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:43:01,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:43:01,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:43:01,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:43:01,952 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 140 [2022-11-18 18:43:01,953 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 130 transitions, 467 flow. Second operand has 6 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:01,953 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:43:01,953 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 140 [2022-11-18 18:43:01,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:43:06,455 INFO L130 PetriNetUnfolder]: 15231/27237 cut-off events. [2022-11-18 18:43:06,455 INFO L131 PetriNetUnfolder]: For 29598/33045 co-relation queries the response was YES. [2022-11-18 18:43:06,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64836 conditions, 27237 events. 15231/27237 cut-off events. For 29598/33045 co-relation queries the response was YES. Maximal size of possible extension queue 1443. Compared 243207 event pairs, 1169 based on Foata normal form. 45/26054 useless extension candidates. Maximal degree in co-relation 64755. Up to 8121 conditions per place. [2022-11-18 18:43:06,770 INFO L137 encePairwiseOnDemand]: 129/140 looper letters, 93 selfloop transitions, 20 changer transitions 0/219 dead transitions. [2022-11-18 18:43:06,770 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 219 transitions, 982 flow [2022-11-18 18:43:06,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 18:43:06,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-18 18:43:06,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1237 transitions. [2022-11-18 18:43:06,774 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8835714285714286 [2022-11-18 18:43:06,775 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1237 transitions. [2022-11-18 18:43:06,776 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1237 transitions. [2022-11-18 18:43:06,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:43:06,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1237 transitions. [2022-11-18 18:43:06,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 123.7) internal successors, (1237), 10 states have internal predecessors, (1237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:06,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 140.0) internal successors, (1540), 11 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:06,788 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 140.0) internal successors, (1540), 11 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:06,789 INFO L175 Difference]: Start difference. First operand has 161 places, 130 transitions, 467 flow. Second operand 10 states and 1237 transitions. [2022-11-18 18:43:06,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 219 transitions, 982 flow [2022-11-18 18:43:06,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 219 transitions, 952 flow, removed 15 selfloop flow, removed 12 redundant places. [2022-11-18 18:43:06,975 INFO L231 Difference]: Finished difference. Result has 155 places, 148 transitions, 580 flow [2022-11-18 18:43:06,976 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=580, PETRI_PLACES=155, PETRI_TRANSITIONS=148} [2022-11-18 18:43:06,976 INFO L288 CegarLoopForPetriNet]: 147 programPoint places, 8 predicate places. [2022-11-18 18:43:06,977 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 148 transitions, 580 flow [2022-11-18 18:43:06,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:06,977 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:43:06,977 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:43:06,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 18:43:06,978 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:43:06,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:06,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1900522248, now seen corresponding path program 1 times [2022-11-18 18:43:06,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:43:06,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142418696] [2022-11-18 18:43:06,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:06,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:43:07,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:07,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:43:07,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:43:07,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142418696] [2022-11-18 18:43:07,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142418696] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:43:07,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:43:07,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 18:43:07,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797834271] [2022-11-18 18:43:07,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:43:07,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 18:43:07,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:43:07,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 18:43:07,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 18:43:07,305 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 140 [2022-11-18 18:43:07,306 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 148 transitions, 580 flow. Second operand has 7 states, 7 states have (on average 110.85714285714286) internal successors, (776), 7 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:07,306 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:43:07,307 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 140 [2022-11-18 18:43:07,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:43:10,741 INFO L130 PetriNetUnfolder]: 6642/16037 cut-off events. [2022-11-18 18:43:10,741 INFO L131 PetriNetUnfolder]: For 27882/30613 co-relation queries the response was YES. [2022-11-18 18:43:10,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47021 conditions, 16037 events. 6642/16037 cut-off events. For 27882/30613 co-relation queries the response was YES. Maximal size of possible extension queue 907. Compared 172091 event pairs, 2233 based on Foata normal form. 340/15438 useless extension candidates. Maximal degree in co-relation 46939. Up to 3187 conditions per place. [2022-11-18 18:43:10,911 INFO L137 encePairwiseOnDemand]: 131/140 looper letters, 94 selfloop transitions, 20 changer transitions 0/223 dead transitions. [2022-11-18 18:43:10,911 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 223 transitions, 1251 flow [2022-11-18 18:43:10,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 18:43:10,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-18 18:43:10,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1185 transitions. [2022-11-18 18:43:10,915 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8464285714285714 [2022-11-18 18:43:10,915 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1185 transitions. [2022-11-18 18:43:10,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1185 transitions. [2022-11-18 18:43:10,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:43:10,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1185 transitions. [2022-11-18 18:43:10,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 118.5) internal successors, (1185), 10 states have internal predecessors, (1185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:10,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 140.0) internal successors, (1540), 11 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:10,923 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 140.0) internal successors, (1540), 11 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:10,923 INFO L175 Difference]: Start difference. First operand has 155 places, 148 transitions, 580 flow. Second operand 10 states and 1185 transitions. [2022-11-18 18:43:10,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 223 transitions, 1251 flow [2022-11-18 18:43:11,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 223 transitions, 1249 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 18:43:11,061 INFO L231 Difference]: Finished difference. Result has 171 places, 160 transitions, 767 flow [2022-11-18 18:43:11,061 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=578, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=767, PETRI_PLACES=171, PETRI_TRANSITIONS=160} [2022-11-18 18:43:11,062 INFO L288 CegarLoopForPetriNet]: 147 programPoint places, 24 predicate places. [2022-11-18 18:43:11,062 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 160 transitions, 767 flow [2022-11-18 18:43:11,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 110.85714285714286) internal successors, (776), 7 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:11,063 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:43:11,063 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:43:11,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 18:43:11,063 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:43:11,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:11,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1314023130, now seen corresponding path program 1 times [2022-11-18 18:43:11,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:43:11,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575618532] [2022-11-18 18:43:11,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:11,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:43:11,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:11,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:43:11,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:43:11,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575618532] [2022-11-18 18:43:11,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575618532] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:43:11,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:43:11,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 18:43:11,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878040806] [2022-11-18 18:43:11,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:43:11,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 18:43:11,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:43:11,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 18:43:11,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 18:43:11,407 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 140 [2022-11-18 18:43:11,408 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 160 transitions, 767 flow. Second operand has 7 states, 7 states have (on average 115.0) internal successors, (805), 7 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:11,408 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:43:11,408 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 140 [2022-11-18 18:43:11,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:43:17,999 INFO L130 PetriNetUnfolder]: 19257/35374 cut-off events. [2022-11-18 18:43:17,999 INFO L131 PetriNetUnfolder]: For 63717/67406 co-relation queries the response was YES. [2022-11-18 18:43:18,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109857 conditions, 35374 events. 19257/35374 cut-off events. For 63717/67406 co-relation queries the response was YES. Maximal size of possible extension queue 2042. Compared 339423 event pairs, 1307 based on Foata normal form. 633/34977 useless extension candidates. Maximal degree in co-relation 109770. Up to 7333 conditions per place. [2022-11-18 18:43:18,294 INFO L137 encePairwiseOnDemand]: 129/140 looper letters, 121 selfloop transitions, 38 changer transitions 0/277 dead transitions. [2022-11-18 18:43:18,294 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 277 transitions, 1675 flow [2022-11-18 18:43:18,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 18:43:18,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-18 18:43:18,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1613 transitions. [2022-11-18 18:43:18,299 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8862637362637362 [2022-11-18 18:43:18,300 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1613 transitions. [2022-11-18 18:43:18,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1613 transitions. [2022-11-18 18:43:18,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:43:18,301 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1613 transitions. [2022-11-18 18:43:18,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 124.07692307692308) internal successors, (1613), 13 states have internal predecessors, (1613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:18,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 140.0) internal successors, (1960), 14 states have internal predecessors, (1960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:18,311 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 140.0) internal successors, (1960), 14 states have internal predecessors, (1960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:18,311 INFO L175 Difference]: Start difference. First operand has 171 places, 160 transitions, 767 flow. Second operand 13 states and 1613 transitions. [2022-11-18 18:43:18,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 277 transitions, 1675 flow [2022-11-18 18:43:19,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 277 transitions, 1649 flow, removed 13 selfloop flow, removed 0 redundant places. [2022-11-18 18:43:19,290 INFO L231 Difference]: Finished difference. Result has 189 places, 180 transitions, 1034 flow [2022-11-18 18:43:19,291 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=741, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1034, PETRI_PLACES=189, PETRI_TRANSITIONS=180} [2022-11-18 18:43:19,291 INFO L288 CegarLoopForPetriNet]: 147 programPoint places, 42 predicate places. [2022-11-18 18:43:19,292 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 180 transitions, 1034 flow [2022-11-18 18:43:19,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 115.0) internal successors, (805), 7 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:19,292 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:43:19,293 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:43:19,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 18:43:19,293 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:43:19,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:19,294 INFO L85 PathProgramCache]: Analyzing trace with hash 247308304, now seen corresponding path program 1 times [2022-11-18 18:43:19,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:43:19,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563188584] [2022-11-18 18:43:19,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:19,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:43:19,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:19,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:43:19,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:43:19,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563188584] [2022-11-18 18:43:19,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563188584] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:43:19,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:43:19,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 18:43:19,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688321250] [2022-11-18 18:43:19,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:43:19,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 18:43:19,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:43:19,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 18:43:19,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:43:19,771 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 140 [2022-11-18 18:43:19,772 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 180 transitions, 1034 flow. Second operand has 8 states, 8 states have (on average 115.125) internal successors, (921), 8 states have internal predecessors, (921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:19,773 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:43:19,773 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 140 [2022-11-18 18:43:19,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:43:26,569 INFO L130 PetriNetUnfolder]: 18485/34100 cut-off events. [2022-11-18 18:43:26,569 INFO L131 PetriNetUnfolder]: For 114820/118140 co-relation queries the response was YES. [2022-11-18 18:43:26,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127324 conditions, 34100 events. 18485/34100 cut-off events. For 114820/118140 co-relation queries the response was YES. Maximal size of possible extension queue 2028. Compared 330372 event pairs, 1127 based on Foata normal form. 389/33475 useless extension candidates. Maximal degree in co-relation 127228. Up to 7106 conditions per place. [2022-11-18 18:43:26,923 INFO L137 encePairwiseOnDemand]: 129/140 looper letters, 114 selfloop transitions, 58 changer transitions 43/325 dead transitions. [2022-11-18 18:43:26,923 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 325 transitions, 2355 flow [2022-11-18 18:43:26,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 18:43:26,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-18 18:43:26,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1988 transitions. [2022-11-18 18:43:26,930 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8875 [2022-11-18 18:43:26,930 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1988 transitions. [2022-11-18 18:43:26,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1988 transitions. [2022-11-18 18:43:26,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:43:26,933 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1988 transitions. [2022-11-18 18:43:26,939 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 124.25) internal successors, (1988), 16 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:26,944 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 140.0) internal successors, (2380), 17 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:26,945 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 140.0) internal successors, (2380), 17 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:26,946 INFO L175 Difference]: Start difference. First operand has 189 places, 180 transitions, 1034 flow. Second operand 16 states and 1988 transitions. [2022-11-18 18:43:26,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 325 transitions, 2355 flow [2022-11-18 18:43:35,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 325 transitions, 2244 flow, removed 43 selfloop flow, removed 5 redundant places. [2022-11-18 18:43:35,432 INFO L231 Difference]: Finished difference. Result has 203 places, 198 transitions, 1308 flow [2022-11-18 18:43:35,432 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=931, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1308, PETRI_PLACES=203, PETRI_TRANSITIONS=198} [2022-11-18 18:43:35,433 INFO L288 CegarLoopForPetriNet]: 147 programPoint places, 56 predicate places. [2022-11-18 18:43:35,433 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 198 transitions, 1308 flow [2022-11-18 18:43:35,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 115.125) internal successors, (921), 8 states have internal predecessors, (921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:35,434 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:43:35,434 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:43:35,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 18:43:35,434 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:43:35,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:35,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1473546761, now seen corresponding path program 1 times [2022-11-18 18:43:35,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:43:35,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572969977] [2022-11-18 18:43:35,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:35,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:43:35,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:36,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:43:36,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:43:36,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572969977] [2022-11-18 18:43:36,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572969977] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:43:36,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:43:36,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 18:43:36,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914365652] [2022-11-18 18:43:36,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:43:36,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 18:43:36,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:43:36,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 18:43:36,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-11-18 18:43:36,898 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 140 [2022-11-18 18:43:36,899 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 198 transitions, 1308 flow. Second operand has 12 states, 12 states have (on average 101.83333333333333) internal successors, (1222), 12 states have internal predecessors, (1222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:36,900 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:43:36,900 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 140 [2022-11-18 18:43:36,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:43:40,742 INFO L130 PetriNetUnfolder]: 6545/20357 cut-off events. [2022-11-18 18:43:40,743 INFO L131 PetriNetUnfolder]: For 101343/114585 co-relation queries the response was YES. [2022-11-18 18:43:40,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78647 conditions, 20357 events. 6545/20357 cut-off events. For 101343/114585 co-relation queries the response was YES. Maximal size of possible extension queue 2432. Compared 277961 event pairs, 184 based on Foata normal form. 34/19138 useless extension candidates. Maximal degree in co-relation 78534. Up to 4641 conditions per place. [2022-11-18 18:43:41,052 INFO L137 encePairwiseOnDemand]: 122/140 looper letters, 100 selfloop transitions, 57 changer transitions 31/334 dead transitions. [2022-11-18 18:43:41,052 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 334 transitions, 2602 flow [2022-11-18 18:43:41,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 18:43:41,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-18 18:43:41,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1848 transitions. [2022-11-18 18:43:41,057 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7764705882352941 [2022-11-18 18:43:41,057 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1848 transitions. [2022-11-18 18:43:41,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1848 transitions. [2022-11-18 18:43:41,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:43:41,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1848 transitions. [2022-11-18 18:43:41,062 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 108.70588235294117) internal successors, (1848), 17 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:41,066 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 140.0) internal successors, (2520), 18 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:41,067 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 140.0) internal successors, (2520), 18 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:41,067 INFO L175 Difference]: Start difference. First operand has 203 places, 198 transitions, 1308 flow. Second operand 17 states and 1848 transitions. [2022-11-18 18:43:41,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 334 transitions, 2602 flow [2022-11-18 18:43:54,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 334 transitions, 2201 flow, removed 158 selfloop flow, removed 17 redundant places. [2022-11-18 18:43:54,512 INFO L231 Difference]: Finished difference. Result has 207 places, 237 transitions, 1574 flow [2022-11-18 18:43:54,512 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=983, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1574, PETRI_PLACES=207, PETRI_TRANSITIONS=237} [2022-11-18 18:43:54,513 INFO L288 CegarLoopForPetriNet]: 147 programPoint places, 60 predicate places. [2022-11-18 18:43:54,513 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 237 transitions, 1574 flow [2022-11-18 18:43:54,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 101.83333333333333) internal successors, (1222), 12 states have internal predecessors, (1222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:54,514 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:43:54,514 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:43:54,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 18:43:54,515 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:43:54,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:54,515 INFO L85 PathProgramCache]: Analyzing trace with hash 530385417, now seen corresponding path program 2 times [2022-11-18 18:43:54,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:43:54,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350784113] [2022-11-18 18:43:54,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:54,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:43:54,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:55,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:43:55,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:43:55,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350784113] [2022-11-18 18:43:55,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350784113] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:43:55,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:43:55,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 18:43:55,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31394546] [2022-11-18 18:43:55,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:43:55,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 18:43:55,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:43:55,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 18:43:55,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:43:55,460 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 140 [2022-11-18 18:43:55,461 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 237 transitions, 1574 flow. Second operand has 9 states, 9 states have (on average 113.55555555555556) internal successors, (1022), 9 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:43:55,461 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:43:55,462 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 140 [2022-11-18 18:43:55,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand