./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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_67f9b6f0-7134-4d60-b6cf-d44aff0b90f5/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f9b6f0-7134-4d60-b6cf-d44aff0b90f5/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f9b6f0-7134-4d60-b6cf-d44aff0b90f5/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f9b6f0-7134-4d60-b6cf-d44aff0b90f5/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f9b6f0-7134-4d60-b6cf-d44aff0b90f5/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f9b6f0-7134-4d60-b6cf-d44aff0b90f5/bin/uautomizer-uyxdKDjOR8 --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 81147b3e42a82bd92b2fd1c17836bc41bf8598e66ad2317620561a8ac507fa9a --- 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-2329fc7 [2022-12-13 21:06:19,632 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 21:06:19,634 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 21:06:19,647 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 21:06:19,647 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 21:06:19,648 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 21:06:19,649 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 21:06:19,650 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 21:06:19,651 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 21:06:19,652 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 21:06:19,652 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 21:06:19,653 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 21:06:19,653 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 21:06:19,654 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 21:06:19,655 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 21:06:19,656 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 21:06:19,656 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 21:06:19,657 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 21:06:19,658 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 21:06:19,659 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 21:06:19,660 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 21:06:19,662 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 21:06:19,663 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 21:06:19,664 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 21:06:19,668 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 21:06:19,668 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 21:06:19,668 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 21:06:19,669 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 21:06:19,670 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 21:06:19,671 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 21:06:19,671 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 21:06:19,672 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 21:06:19,673 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 21:06:19,674 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 21:06:19,675 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 21:06:19,675 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 21:06:19,676 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 21:06:19,676 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 21:06:19,676 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 21:06:19,677 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 21:06:19,678 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 21:06:19,679 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f9b6f0-7134-4d60-b6cf-d44aff0b90f5/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 21:06:19,701 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 21:06:19,702 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 21:06:19,702 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 21:06:19,702 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 21:06:19,703 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 21:06:19,703 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 21:06:19,704 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 21:06:19,704 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 21:06:19,704 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 21:06:19,704 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 21:06:19,704 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 21:06:19,705 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 21:06:19,705 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 21:06:19,705 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 21:06:19,705 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 21:06:19,705 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 21:06:19,706 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 21:06:19,706 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 21:06:19,706 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 21:06:19,706 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 21:06:19,706 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 21:06:19,706 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 21:06:19,707 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 21:06:19,707 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 21:06:19,707 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:06:19,707 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 21:06:19,707 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 21:06:19,707 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 21:06:19,708 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 21:06:19,708 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 21:06:19,708 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 21:06:19,708 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 21:06:19,708 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 21:06:19,708 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 21:06:19,709 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 21:06:19,709 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_67f9b6f0-7134-4d60-b6cf-d44aff0b90f5/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f9b6f0-7134-4d60-b6cf-d44aff0b90f5/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 81147b3e42a82bd92b2fd1c17836bc41bf8598e66ad2317620561a8ac507fa9a [2022-12-13 21:06:19,898 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 21:06:19,915 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 21:06:19,917 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 21:06:19,918 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 21:06:19,918 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 21:06:19,919 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f9b6f0-7134-4d60-b6cf-d44aff0b90f5/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i [2022-12-13 21:06:22,594 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 21:06:22,771 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 21:06:22,772 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f9b6f0-7134-4d60-b6cf-d44aff0b90f5/sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i [2022-12-13 21:06:22,781 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f9b6f0-7134-4d60-b6cf-d44aff0b90f5/bin/uautomizer-uyxdKDjOR8/data/8caf6441e/22d9812ec600447a904acf8b7a41449f/FLAGa06d57203 [2022-12-13 21:06:22,792 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f9b6f0-7134-4d60-b6cf-d44aff0b90f5/bin/uautomizer-uyxdKDjOR8/data/8caf6441e/22d9812ec600447a904acf8b7a41449f [2022-12-13 21:06:22,794 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 21:06:22,795 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 21:06:22,796 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 21:06:22,796 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 21:06:22,798 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 21:06:22,799 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:06:22" (1/1) ... [2022-12-13 21:06:22,800 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ba7a4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:06:22, skipping insertion in model container [2022-12-13 21:06:22,800 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:06:22" (1/1) ... [2022-12-13 21:06:22,807 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 21:06:22,850 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 21:06:22,961 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f9b6f0-7134-4d60-b6cf-d44aff0b90f5/sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i[820,833] [2022-12-13 21:06:23,242 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:06:23,251 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 21:06:23,259 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f9b6f0-7134-4d60-b6cf-d44aff0b90f5/sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i[820,833] [2022-12-13 21:06:23,285 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:06:23,335 INFO L208 MainTranslator]: Completed translation [2022-12-13 21:06:23,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:06:23 WrapperNode [2022-12-13 21:06:23,336 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 21:06:23,336 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 21:06:23,337 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 21:06:23,337 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 21:06:23,342 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:06:23" (1/1) ... [2022-12-13 21:06:23,353 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:06:23" (1/1) ... [2022-12-13 21:06:23,368 INFO L138 Inliner]: procedures = 364, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 62 [2022-12-13 21:06:23,369 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 21:06:23,369 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 21:06:23,369 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 21:06:23,369 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 21:06:23,376 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:06:23" (1/1) ... [2022-12-13 21:06:23,376 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:06:23" (1/1) ... [2022-12-13 21:06:23,378 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:06:23" (1/1) ... [2022-12-13 21:06:23,378 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:06:23" (1/1) ... [2022-12-13 21:06:23,381 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:06:23" (1/1) ... [2022-12-13 21:06:23,384 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:06:23" (1/1) ... [2022-12-13 21:06:23,385 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:06:23" (1/1) ... [2022-12-13 21:06:23,386 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:06:23" (1/1) ... [2022-12-13 21:06:23,387 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 21:06:23,388 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 21:06:23,388 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 21:06:23,388 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 21:06:23,389 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:06:23" (1/1) ... [2022-12-13 21:06:23,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:06:23,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f9b6f0-7134-4d60-b6cf-d44aff0b90f5/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:06:23,411 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f9b6f0-7134-4d60-b6cf-d44aff0b90f5/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 21:06:23,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f9b6f0-7134-4d60-b6cf-d44aff0b90f5/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 21:06:23,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 21:06:23,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 21:06:23,438 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 21:06:23,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 21:06:23,438 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 21:06:23,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 21:06:23,438 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_mutex [2022-12-13 21:06:23,438 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_mutex [2022-12-13 21:06:23,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 21:06:23,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 21:06:23,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 21:06:23,440 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 21:06:23,542 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 21:06:23,543 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 21:06:23,672 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 21:06:23,677 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 21:06:23,677 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-13 21:06:23,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:06:23 BoogieIcfgContainer [2022-12-13 21:06:23,679 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 21:06:23,680 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 21:06:23,681 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 21:06:23,683 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 21:06:23,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 09:06:22" (1/3) ... [2022-12-13 21:06:23,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49b81534 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:06:23, skipping insertion in model container [2022-12-13 21:06:23,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:06:23" (2/3) ... [2022-12-13 21:06:23,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49b81534 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:06:23, skipping insertion in model container [2022-12-13 21:06:23,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:06:23" (3/3) ... [2022-12-13 21:06:23,685 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-1.i [2022-12-13 21:06:23,691 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 21:06:23,706 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 21:06:23,706 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 21:06:23,706 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 21:06:23,749 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-12-13 21:06:23,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 89 places, 92 transitions, 192 flow [2022-12-13 21:06:23,808 INFO L130 PetriNetUnfolder]: 7/91 cut-off events. [2022-12-13 21:06:23,808 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 21:06:23,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 91 events. 7/91 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 82 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2022-12-13 21:06:23,812 INFO L82 GeneralOperation]: Start removeDead. Operand has 89 places, 92 transitions, 192 flow [2022-12-13 21:06:23,816 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 81 transitions, 168 flow [2022-12-13 21:06:23,818 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 21:06:23,826 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 81 transitions, 168 flow [2022-12-13 21:06:23,828 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 79 places, 81 transitions, 168 flow [2022-12-13 21:06:23,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 81 transitions, 168 flow [2022-12-13 21:06:23,845 INFO L130 PetriNetUnfolder]: 6/81 cut-off events. [2022-12-13 21:06:23,845 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 21:06:23,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 81 events. 6/81 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 75 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2022-12-13 21:06:23,846 INFO L119 LiptonReduction]: Number of co-enabled transitions 722 [2022-12-13 21:06:25,300 INFO L134 LiptonReduction]: Checked pairs total: 931 [2022-12-13 21:06:25,300 INFO L136 LiptonReduction]: Total number of compositions: 72 [2022-12-13 21:06:25,311 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 21:06:25,316 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;@70c6b230, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 21:06:25,316 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-13 21:06:25,319 INFO L130 PetriNetUnfolder]: 2/14 cut-off events. [2022-12-13 21:06:25,319 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 21:06:25,319 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:06:25,320 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:06:25,320 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 21:06:25,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:06:25,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1303268790, now seen corresponding path program 1 times [2022-12-13 21:06:25,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:06:25,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790763492] [2022-12-13 21:06:25,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:06:25,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:06:25,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:06:25,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:06:25,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:06:25,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790763492] [2022-12-13 21:06:25,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790763492] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:06:25,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:06:25,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:06:25,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250487465] [2022-12-13 21:06:25,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:06:25,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:06:25,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:06:25,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:06:25,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:06:25,526 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 164 [2022-12-13 21:06:25,528 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 15 transitions, 36 flow. Second operand has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 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) [2022-12-13 21:06:25,528 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:06:25,528 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 164 [2022-12-13 21:06:25,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:06:25,574 INFO L130 PetriNetUnfolder]: 41/86 cut-off events. [2022-12-13 21:06:25,574 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 21:06:25,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176 conditions, 86 events. 41/86 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 199 event pairs, 15 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 162. Up to 53 conditions per place. [2022-12-13 21:06:25,575 INFO L137 encePairwiseOnDemand]: 161/164 looper letters, 20 selfloop transitions, 2 changer transitions 0/23 dead transitions. [2022-12-13 21:06:25,576 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 23 transitions, 96 flow [2022-12-13 21:06:25,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:06:25,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:06:25,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 257 transitions. [2022-12-13 21:06:25,585 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5223577235772358 [2022-12-13 21:06:25,586 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 257 transitions. [2022-12-13 21:06:25,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 257 transitions. [2022-12-13 21:06:25,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:06:25,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 257 transitions. [2022-12-13 21:06:25,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 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) [2022-12-13 21:06:25,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 164.0) internal successors, (656), 4 states have internal predecessors, (656), 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) [2022-12-13 21:06:25,595 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 164.0) internal successors, (656), 4 states have internal predecessors, (656), 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) [2022-12-13 21:06:25,596 INFO L175 Difference]: Start difference. First operand has 17 places, 15 transitions, 36 flow. Second operand 3 states and 257 transitions. [2022-12-13 21:06:25,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 23 transitions, 96 flow [2022-12-13 21:06:25,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 23 transitions, 92 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 21:06:25,599 INFO L231 Difference]: Finished difference. Result has 18 places, 16 transitions, 44 flow [2022-12-13 21:06:25,601 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=44, PETRI_PLACES=18, PETRI_TRANSITIONS=16} [2022-12-13 21:06:25,604 INFO L288 CegarLoopForPetriNet]: 17 programPoint places, 1 predicate places. [2022-12-13 21:06:25,604 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 16 transitions, 44 flow [2022-12-13 21:06:25,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 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) [2022-12-13 21:06:25,604 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:06:25,604 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:06:25,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 21:06:25,605 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 21:06:25,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:06:25,605 INFO L85 PathProgramCache]: Analyzing trace with hash 443578097, now seen corresponding path program 1 times [2022-12-13 21:06:25,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:06:25,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961543079] [2022-12-13 21:06:25,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:06:25,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:06:25,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:06:25,670 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:06:25,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:06:25,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961543079] [2022-12-13 21:06:25,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961543079] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:06:25,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:06:25,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:06:25,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179869009] [2022-12-13 21:06:25,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:06:25,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:06:25,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:06:25,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:06:25,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:06:25,680 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 164 [2022-12-13 21:06:25,680 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 16 transitions, 44 flow. Second operand has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 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) [2022-12-13 21:06:25,680 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:06:25,681 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 164 [2022-12-13 21:06:25,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:06:25,719 INFO L130 PetriNetUnfolder]: 61/139 cut-off events. [2022-12-13 21:06:25,719 INFO L131 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2022-12-13 21:06:25,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 298 conditions, 139 events. 61/139 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 480 event pairs, 27 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 71. Up to 85 conditions per place. [2022-12-13 21:06:25,720 INFO L137 encePairwiseOnDemand]: 161/164 looper letters, 22 selfloop transitions, 2 changer transitions 0/25 dead transitions. [2022-12-13 21:06:25,720 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 25 transitions, 120 flow [2022-12-13 21:06:25,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:06:25,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:06:25,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 254 transitions. [2022-12-13 21:06:25,722 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.516260162601626 [2022-12-13 21:06:25,722 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 254 transitions. [2022-12-13 21:06:25,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 254 transitions. [2022-12-13 21:06:25,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:06:25,722 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 254 transitions. [2022-12-13 21:06:25,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 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) [2022-12-13 21:06:25,724 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 164.0) internal successors, (656), 4 states have internal predecessors, (656), 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) [2022-12-13 21:06:25,724 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 164.0) internal successors, (656), 4 states have internal predecessors, (656), 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) [2022-12-13 21:06:25,724 INFO L175 Difference]: Start difference. First operand has 18 places, 16 transitions, 44 flow. Second operand 3 states and 254 transitions. [2022-12-13 21:06:25,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 25 transitions, 120 flow [2022-12-13 21:06:25,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 25 transitions, 116 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 21:06:25,725 INFO L231 Difference]: Finished difference. Result has 20 places, 17 transitions, 54 flow [2022-12-13 21:06:25,725 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=54, PETRI_PLACES=20, PETRI_TRANSITIONS=17} [2022-12-13 21:06:25,725 INFO L288 CegarLoopForPetriNet]: 17 programPoint places, 3 predicate places. [2022-12-13 21:06:25,726 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 17 transitions, 54 flow [2022-12-13 21:06:25,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 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) [2022-12-13 21:06:25,726 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:06:25,726 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:06:25,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 21:06:25,726 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 21:06:25,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:06:25,726 INFO L85 PathProgramCache]: Analyzing trace with hash -891518611, now seen corresponding path program 1 times [2022-12-13 21:06:25,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:06:25,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314389270] [2022-12-13 21:06:25,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:06:25,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:06:25,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:06:25,791 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:06:25,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:06:25,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314389270] [2022-12-13 21:06:25,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314389270] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:06:25,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079580960] [2022-12-13 21:06:25,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:06:25,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:06:25,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f9b6f0-7134-4d60-b6cf-d44aff0b90f5/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:06:25,794 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f9b6f0-7134-4d60-b6cf-d44aff0b90f5/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:06:25,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f9b6f0-7134-4d60-b6cf-d44aff0b90f5/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 21:06:25,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:06:25,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 21:06:25,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:06:25,894 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:06:25,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:06:25,917 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:06:25,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079580960] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:06:25,917 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 21:06:25,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-12-13 21:06:25,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116136201] [2022-12-13 21:06:25,918 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 21:06:25,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:06:25,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:06:25,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:06:25,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:06:25,935 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 164 [2022-12-13 21:06:25,937 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 17 transitions, 54 flow. Second operand has 7 states, 7 states have (on average 79.57142857142857) internal successors, (557), 7 states have internal predecessors, (557), 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) [2022-12-13 21:06:25,937 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:06:25,937 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 164 [2022-12-13 21:06:25,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:06:26,044 INFO L130 PetriNetUnfolder]: 111/264 cut-off events. [2022-12-13 21:06:26,044 INFO L131 PetriNetUnfolder]: For 114/114 co-relation queries the response was YES. [2022-12-13 21:06:26,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 608 conditions, 264 events. 111/264 cut-off events. For 114/114 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 945 event pairs, 18 based on Foata normal form. 30/294 useless extension candidates. Maximal degree in co-relation 166. Up to 55 conditions per place. [2022-12-13 21:06:26,046 INFO L137 encePairwiseOnDemand]: 160/164 looper letters, 44 selfloop transitions, 6 changer transitions 0/51 dead transitions. [2022-12-13 21:06:26,046 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 51 transitions, 258 flow [2022-12-13 21:06:26,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 21:06:26,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 21:06:26,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 504 transitions. [2022-12-13 21:06:26,048 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5121951219512195 [2022-12-13 21:06:26,048 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 504 transitions. [2022-12-13 21:06:26,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 504 transitions. [2022-12-13 21:06:26,049 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:06:26,049 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 504 transitions. [2022-12-13 21:06:26,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 84.0) internal successors, (504), 6 states have internal predecessors, (504), 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) [2022-12-13 21:06:26,051 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 164.0) internal successors, (1148), 7 states have internal predecessors, (1148), 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) [2022-12-13 21:06:26,052 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 164.0) internal successors, (1148), 7 states have internal predecessors, (1148), 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) [2022-12-13 21:06:26,052 INFO L175 Difference]: Start difference. First operand has 20 places, 17 transitions, 54 flow. Second operand 6 states and 504 transitions. [2022-12-13 21:06:26,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 51 transitions, 258 flow [2022-12-13 21:06:26,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 51 transitions, 256 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 21:06:26,053 INFO L231 Difference]: Finished difference. Result has 28 places, 20 transitions, 92 flow [2022-12-13 21:06:26,053 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=92, PETRI_PLACES=28, PETRI_TRANSITIONS=20} [2022-12-13 21:06:26,053 INFO L288 CegarLoopForPetriNet]: 17 programPoint places, 11 predicate places. [2022-12-13 21:06:26,054 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 20 transitions, 92 flow [2022-12-13 21:06:26,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 79.57142857142857) internal successors, (557), 7 states have internal predecessors, (557), 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) [2022-12-13 21:06:26,054 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:06:26,054 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:06:26,060 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f9b6f0-7134-4d60-b6cf-d44aff0b90f5/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 21:06:26,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f9b6f0-7134-4d60-b6cf-d44aff0b90f5/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:06:26,256 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 21:06:26,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:06:26,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1107887445, now seen corresponding path program 2 times [2022-12-13 21:06:26,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:06:26,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247235655] [2022-12-13 21:06:26,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:06:26,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:06:26,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:06:26,439 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-13 21:06:26,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:06:26,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247235655] [2022-12-13 21:06:26,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247235655] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:06:26,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746308471] [2022-12-13 21:06:26,440 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 21:06:26,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:06:26,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f9b6f0-7134-4d60-b6cf-d44aff0b90f5/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:06:26,441 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f9b6f0-7134-4d60-b6cf-d44aff0b90f5/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:06:26,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f9b6f0-7134-4d60-b6cf-d44aff0b90f5/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 21:06:26,518 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 21:06:26,518 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:06:26,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 21:06:26,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:06:26,566 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 21:06:26,566 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:06:26,629 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 21:06:26,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1746308471] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:06:26,630 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 21:06:26,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2022-12-13 21:06:26,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443845848] [2022-12-13 21:06:26,630 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 21:06:26,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 21:06:26,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:06:26,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 21:06:26,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2022-12-13 21:06:26,674 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 164 [2022-12-13 21:06:26,676 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 20 transitions, 92 flow. Second operand has 14 states, 14 states have (on average 75.28571428571429) internal successors, (1054), 14 states have internal predecessors, (1054), 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) [2022-12-13 21:06:26,677 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:06:26,677 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 164 [2022-12-13 21:06:26,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:06:27,108 INFO L130 PetriNetUnfolder]: 323/744 cut-off events. [2022-12-13 21:06:27,109 INFO L131 PetriNetUnfolder]: For 1524/1524 co-relation queries the response was YES. [2022-12-13 21:06:27,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2272 conditions, 744 events. 323/744 cut-off events. For 1524/1524 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3098 event pairs, 10 based on Foata normal form. 107/851 useless extension candidates. Maximal degree in co-relation 584. Up to 168 conditions per place. [2022-12-13 21:06:27,115 INFO L137 encePairwiseOnDemand]: 157/164 looper letters, 158 selfloop transitions, 69 changer transitions 0/228 dead transitions. [2022-12-13 21:06:27,115 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 228 transitions, 1346 flow [2022-12-13 21:06:27,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-12-13 21:06:27,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-12-13 21:06:27,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 2704 transitions. [2022-12-13 21:06:27,120 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48493543758967 [2022-12-13 21:06:27,120 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 2704 transitions. [2022-12-13 21:06:27,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 2704 transitions. [2022-12-13 21:06:27,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:06:27,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 2704 transitions. [2022-12-13 21:06:27,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 79.52941176470588) internal successors, (2704), 34 states have internal predecessors, (2704), 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) [2022-12-13 21:06:27,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 164.0) internal successors, (5740), 35 states have internal predecessors, (5740), 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) [2022-12-13 21:06:27,134 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 164.0) internal successors, (5740), 35 states have internal predecessors, (5740), 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) [2022-12-13 21:06:27,134 INFO L175 Difference]: Start difference. First operand has 28 places, 20 transitions, 92 flow. Second operand 34 states and 2704 transitions. [2022-12-13 21:06:27,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 228 transitions, 1346 flow [2022-12-13 21:06:27,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 228 transitions, 1286 flow, removed 27 selfloop flow, removed 1 redundant places. [2022-12-13 21:06:27,139 INFO L231 Difference]: Finished difference. Result has 85 places, 82 transitions, 724 flow [2022-12-13 21:06:27,139 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=724, PETRI_PLACES=85, PETRI_TRANSITIONS=82} [2022-12-13 21:06:27,140 INFO L288 CegarLoopForPetriNet]: 17 programPoint places, 68 predicate places. [2022-12-13 21:06:27,140 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 82 transitions, 724 flow [2022-12-13 21:06:27,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 75.28571428571429) internal successors, (1054), 14 states have internal predecessors, (1054), 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) [2022-12-13 21:06:27,140 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:06:27,141 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:06:27,149 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f9b6f0-7134-4d60-b6cf-d44aff0b90f5/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 21:06:27,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f9b6f0-7134-4d60-b6cf-d44aff0b90f5/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:06:27,341 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 21:06:27,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:06:27,342 INFO L85 PathProgramCache]: Analyzing trace with hash -723171492, now seen corresponding path program 3 times [2022-12-13 21:06:27,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:06:27,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355792530] [2022-12-13 21:06:27,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:06:27,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:06:27,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:06:27,547 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:06:27,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:06:27,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355792530] [2022-12-13 21:06:27,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355792530] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:06:27,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782272256] [2022-12-13 21:06:27,548 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 21:06:27,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:06:27,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f9b6f0-7134-4d60-b6cf-d44aff0b90f5/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:06:27,549 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f9b6f0-7134-4d60-b6cf-d44aff0b90f5/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:06:27,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f9b6f0-7134-4d60-b6cf-d44aff0b90f5/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 21:06:27,629 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-12-13 21:06:27,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:06:27,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 21:06:27,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:06:27,658 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-12-13 21:06:27,659 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:06:27,690 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-12-13 21:06:27,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782272256] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:06:27,690 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 21:06:27,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5, 5] total 19 [2022-12-13 21:06:27,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715172051] [2022-12-13 21:06:27,691 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 21:06:27,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-13 21:06:27,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:06:27,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-13 21:06:27,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2022-12-13 21:06:27,734 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 164 [2022-12-13 21:06:27,736 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 82 transitions, 724 flow. Second operand has 19 states, 19 states have (on average 74.94736842105263) internal successors, (1424), 19 states have internal predecessors, (1424), 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) [2022-12-13 21:06:27,736 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:06:27,736 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 164 [2022-12-13 21:06:27,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:06:29,016 INFO L130 PetriNetUnfolder]: 703/1500 cut-off events. [2022-12-13 21:06:29,016 INFO L131 PetriNetUnfolder]: For 27827/27827 co-relation queries the response was YES. [2022-12-13 21:06:29,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7760 conditions, 1500 events. 703/1500 cut-off events. For 27827/27827 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 7293 event pairs, 14 based on Foata normal form. 131/1631 useless extension candidates. Maximal degree in co-relation 5829. Up to 351 conditions per place. [2022-12-13 21:06:29,035 INFO L137 encePairwiseOnDemand]: 157/164 looper letters, 330 selfloop transitions, 186 changer transitions 0/517 dead transitions. [2022-12-13 21:06:29,035 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 517 transitions, 5320 flow [2022-12-13 21:06:29,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-12-13 21:06:29,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2022-12-13 21:06:29,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 6685 transitions. [2022-12-13 21:06:29,050 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4795552367288379 [2022-12-13 21:06:29,050 INFO L72 ComplementDD]: Start complementDD. Operand 85 states and 6685 transitions. [2022-12-13 21:06:29,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 85 states and 6685 transitions. [2022-12-13 21:06:29,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:06:29,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 85 states and 6685 transitions. [2022-12-13 21:06:29,068 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 86 states, 85 states have (on average 78.6470588235294) internal successors, (6685), 85 states have internal predecessors, (6685), 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) [2022-12-13 21:06:29,085 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 86 states, 86 states have (on average 164.0) internal successors, (14104), 86 states have internal predecessors, (14104), 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) [2022-12-13 21:06:29,090 INFO L81 ComplementDD]: Finished complementDD. Result has 86 states, 86 states have (on average 164.0) internal successors, (14104), 86 states have internal predecessors, (14104), 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) [2022-12-13 21:06:29,090 INFO L175 Difference]: Start difference. First operand has 85 places, 82 transitions, 724 flow. Second operand 85 states and 6685 transitions. [2022-12-13 21:06:29,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 517 transitions, 5320 flow [2022-12-13 21:06:29,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 517 transitions, 5222 flow, removed 14 selfloop flow, removed 4 redundant places. [2022-12-13 21:06:29,128 INFO L231 Difference]: Finished difference. Result has 227 places, 208 transitions, 3292 flow [2022-12-13 21:06:29,128 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=662, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=85, PETRI_FLOW=3292, PETRI_PLACES=227, PETRI_TRANSITIONS=208} [2022-12-13 21:06:29,129 INFO L288 CegarLoopForPetriNet]: 17 programPoint places, 210 predicate places. [2022-12-13 21:06:29,129 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 208 transitions, 3292 flow [2022-12-13 21:06:29,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 74.94736842105263) internal successors, (1424), 19 states have internal predecessors, (1424), 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) [2022-12-13 21:06:29,130 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:06:29,130 INFO L209 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:06:29,134 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f9b6f0-7134-4d60-b6cf-d44aff0b90f5/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 21:06:29,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f9b6f0-7134-4d60-b6cf-d44aff0b90f5/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:06:29,331 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 21:06:29,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:06:29,332 INFO L85 PathProgramCache]: Analyzing trace with hash 934885820, now seen corresponding path program 4 times [2022-12-13 21:06:29,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:06:29,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531837671] [2022-12-13 21:06:29,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:06:29,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:06:29,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:06:29,514 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 11 proven. 66 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2022-12-13 21:06:29,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:06:29,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531837671] [2022-12-13 21:06:29,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531837671] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:06:29,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306136063] [2022-12-13 21:06:29,515 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 21:06:29,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:06:29,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f9b6f0-7134-4d60-b6cf-d44aff0b90f5/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:06:29,517 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f9b6f0-7134-4d60-b6cf-d44aff0b90f5/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:06:29,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f9b6f0-7134-4d60-b6cf-d44aff0b90f5/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 21:06:29,679 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 21:06:29,679 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:06:29,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 21:06:29,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:06:29,737 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 11 proven. 66 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2022-12-13 21:06:29,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:06:29,837 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 11 proven. 66 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2022-12-13 21:06:29,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306136063] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:06:29,837 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 21:06:29,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2022-12-13 21:06:29,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503929879] [2022-12-13 21:06:29,837 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 21:06:29,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-13 21:06:29,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:06:29,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-13 21:06:29,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2022-12-13 21:06:29,858 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 164 [2022-12-13 21:06:29,859 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 208 transitions, 3292 flow. Second operand has 17 states, 17 states have (on average 81.0) internal successors, (1377), 17 states have internal predecessors, (1377), 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) [2022-12-13 21:06:29,859 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:06:29,859 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 164 [2022-12-13 21:06:29,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:06:30,778 INFO L130 PetriNetUnfolder]: 1535/3145 cut-off events. [2022-12-13 21:06:30,778 INFO L131 PetriNetUnfolder]: For 349903/349905 co-relation queries the response was YES. [2022-12-13 21:06:30,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23102 conditions, 3145 events. 1535/3145 cut-off events. For 349903/349905 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 16938 event pairs, 96 based on Foata normal form. 210/3355 useless extension candidates. Maximal degree in co-relation 20262. Up to 767 conditions per place. [2022-12-13 21:06:30,808 INFO L137 encePairwiseOnDemand]: 160/164 looper letters, 494 selfloop transitions, 198 changer transitions 0/693 dead transitions. [2022-12-13 21:06:30,808 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 693 transitions, 12154 flow [2022-12-13 21:06:30,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 21:06:30,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-12-13 21:06:30,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1363 transitions. [2022-12-13 21:06:30,810 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5194359756097561 [2022-12-13 21:06:30,810 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1363 transitions. [2022-12-13 21:06:30,810 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1363 transitions. [2022-12-13 21:06:30,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:06:30,811 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1363 transitions. [2022-12-13 21:06:30,818 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 85.1875) internal successors, (1363), 16 states have internal predecessors, (1363), 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) [2022-12-13 21:06:30,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 164.0) internal successors, (2788), 17 states have internal predecessors, (2788), 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) [2022-12-13 21:06:30,821 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 164.0) internal successors, (2788), 17 states have internal predecessors, (2788), 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) [2022-12-13 21:06:30,821 INFO L175 Difference]: Start difference. First operand has 227 places, 208 transitions, 3292 flow. Second operand 16 states and 1363 transitions. [2022-12-13 21:06:30,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 693 transitions, 12154 flow [2022-12-13 21:06:31,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 693 transitions, 8518 flow, removed 1584 selfloop flow, removed 27 redundant places. [2022-12-13 21:06:31,295 INFO L231 Difference]: Finished difference. Result has 224 places, 316 transitions, 3574 flow [2022-12-13 21:06:31,295 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=2056, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3574, PETRI_PLACES=224, PETRI_TRANSITIONS=316} [2022-12-13 21:06:31,295 INFO L288 CegarLoopForPetriNet]: 17 programPoint places, 207 predicate places. [2022-12-13 21:06:31,295 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 316 transitions, 3574 flow [2022-12-13 21:06:31,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 81.0) internal successors, (1377), 17 states have internal predecessors, (1377), 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) [2022-12-13 21:06:31,296 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:06:31,296 INFO L209 CegarLoopForPetriNet]: trace histogram [14, 14, 14, 14, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:06:31,301 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f9b6f0-7134-4d60-b6cf-d44aff0b90f5/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 21:06:31,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f9b6f0-7134-4d60-b6cf-d44aff0b90f5/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:06:31,498 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 21:06:31,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:06:31,499 INFO L85 PathProgramCache]: Analyzing trace with hash -2027284530, now seen corresponding path program 5 times [2022-12-13 21:06:31,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:06:31,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920426220] [2022-12-13 21:06:31,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:06:31,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:06:31,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:06:31,835 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 14 proven. 176 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-12-13 21:06:31,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:06:31,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920426220] [2022-12-13 21:06:31,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920426220] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:06:31,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069572229] [2022-12-13 21:06:31,836 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 21:06:31,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:06:31,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f9b6f0-7134-4d60-b6cf-d44aff0b90f5/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:06:31,837 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f9b6f0-7134-4d60-b6cf-d44aff0b90f5/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:06:31,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f9b6f0-7134-4d60-b6cf-d44aff0b90f5/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 21:06:32,054 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2022-12-13 21:06:32,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:06:32,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-13 21:06:32,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:06:32,149 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 14 proven. 176 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-12-13 21:06:32,149 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:06:32,326 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 14 proven. 176 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-12-13 21:06:32,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2069572229] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:06:32,326 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 21:06:32,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 23 [2022-12-13 21:06:32,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902785463] [2022-12-13 21:06:32,326 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 21:06:32,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-13 21:06:32,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:06:32,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-13 21:06:32,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2022-12-13 21:06:32,355 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 164 [2022-12-13 21:06:32,357 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 316 transitions, 3574 flow. Second operand has 23 states, 23 states have (on average 78.6086956521739) internal successors, (1808), 23 states have internal predecessors, (1808), 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) [2022-12-13 21:06:32,357 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:06:32,357 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 164 [2022-12-13 21:06:32,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:06:34,027 INFO L130 PetriNetUnfolder]: 2538/5977 cut-off events. [2022-12-13 21:06:34,027 INFO L131 PetriNetUnfolder]: For 365592/365592 co-relation queries the response was YES. [2022-12-13 21:06:34,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34711 conditions, 5977 events. 2538/5977 cut-off events. For 365592/365592 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 36179 event pairs, 339 based on Foata normal form. 531/6508 useless extension candidates. Maximal degree in co-relation 31225. Up to 1298 conditions per place. [2022-12-13 21:06:34,076 INFO L137 encePairwiseOnDemand]: 160/164 looper letters, 516 selfloop transitions, 150 changer transitions 0/667 dead transitions. [2022-12-13 21:06:34,076 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 667 transitions, 12380 flow [2022-12-13 21:06:34,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-13 21:06:34,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-12-13 21:06:34,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1854 transitions. [2022-12-13 21:06:34,078 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5138580931263859 [2022-12-13 21:06:34,078 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1854 transitions. [2022-12-13 21:06:34,078 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1854 transitions. [2022-12-13 21:06:34,078 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:06:34,078 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1854 transitions. [2022-12-13 21:06:34,080 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 84.27272727272727) internal successors, (1854), 22 states have internal predecessors, (1854), 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) [2022-12-13 21:06:34,082 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 164.0) internal successors, (3772), 23 states have internal predecessors, (3772), 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) [2022-12-13 21:06:34,082 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 164.0) internal successors, (3772), 23 states have internal predecessors, (3772), 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) [2022-12-13 21:06:34,082 INFO L175 Difference]: Start difference. First operand has 224 places, 316 transitions, 3574 flow. Second operand 22 states and 1854 transitions. [2022-12-13 21:06:34,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 667 transitions, 12380 flow [2022-12-13 21:06:34,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 667 transitions, 12120 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-12-13 21:06:34,581 INFO L231 Difference]: Finished difference. Result has 250 places, 375 transitions, 4616 flow [2022-12-13 21:06:34,581 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=3444, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=4616, PETRI_PLACES=250, PETRI_TRANSITIONS=375} [2022-12-13 21:06:34,582 INFO L288 CegarLoopForPetriNet]: 17 programPoint places, 233 predicate places. [2022-12-13 21:06:34,582 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 375 transitions, 4616 flow [2022-12-13 21:06:34,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 78.6086956521739) internal successors, (1808), 23 states have internal predecessors, (1808), 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) [2022-12-13 21:06:34,582 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:06:34,582 INFO L209 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:06:34,587 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f9b6f0-7134-4d60-b6cf-d44aff0b90f5/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 21:06:34,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f9b6f0-7134-4d60-b6cf-d44aff0b90f5/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-12-13 21:06:34,783 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 21:06:34,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:06:34,784 INFO L85 PathProgramCache]: Analyzing trace with hash -61003874, now seen corresponding path program 6 times [2022-12-13 21:06:34,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:06:34,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124364864] [2022-12-13 21:06:34,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:06:34,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:06:34,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:06:35,202 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 20 proven. 378 refuted. 0 times theorem prover too weak. 570 trivial. 0 not checked. [2022-12-13 21:06:35,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:06:35,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124364864] [2022-12-13 21:06:35,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124364864] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:06:35,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033732971] [2022-12-13 21:06:35,203 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 21:06:35,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:06:35,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f9b6f0-7134-4d60-b6cf-d44aff0b90f5/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:06:35,204 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f9b6f0-7134-4d60-b6cf-d44aff0b90f5/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:06:35,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f9b6f0-7134-4d60-b6cf-d44aff0b90f5/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 21:06:35,639 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 29 check-sat command(s) [2022-12-13 21:06:35,639 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:06:35,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 660 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 21:06:35,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:06:35,753 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 20 proven. 378 refuted. 0 times theorem prover too weak. 570 trivial. 0 not checked. [2022-12-13 21:06:35,753 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:06:35,971 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 20 proven. 378 refuted. 0 times theorem prover too weak. 570 trivial. 0 not checked. [2022-12-13 21:06:35,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033732971] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:06:35,972 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 21:06:35,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2022-12-13 21:06:35,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756235427] [2022-12-13 21:06:35,972 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 21:06:35,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-13 21:06:35,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:06:35,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-13 21:06:35,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2022-12-13 21:06:35,995 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 164 [2022-12-13 21:06:35,997 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 375 transitions, 4616 flow. Second operand has 23 states, 23 states have (on average 81.17391304347827) internal successors, (1867), 23 states have internal predecessors, (1867), 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) [2022-12-13 21:06:35,998 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:06:35,998 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 164 [2022-12-13 21:06:35,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:06:38,257 INFO L130 PetriNetUnfolder]: 3570/7326 cut-off events. [2022-12-13 21:06:38,258 INFO L131 PetriNetUnfolder]: For 751750/751750 co-relation queries the response was YES. [2022-12-13 21:06:38,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50119 conditions, 7326 events. 3570/7326 cut-off events. For 751750/751750 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 45316 event pairs, 200 based on Foata normal form. 258/7580 useless extension candidates. Maximal degree in co-relation 45513. Up to 1826 conditions per place. [2022-12-13 21:06:38,329 INFO L137 encePairwiseOnDemand]: 160/164 looper letters, 1059 selfloop transitions, 270 changer transitions 0/1330 dead transitions. [2022-12-13 21:06:38,330 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 1330 transitions, 20652 flow [2022-12-13 21:06:38,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-13 21:06:38,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-12-13 21:06:38,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1871 transitions. [2022-12-13 21:06:38,332 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.518569844789357 [2022-12-13 21:06:38,332 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1871 transitions. [2022-12-13 21:06:38,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1871 transitions. [2022-12-13 21:06:38,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:06:38,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1871 transitions. [2022-12-13 21:06:38,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 85.04545454545455) internal successors, (1871), 22 states have internal predecessors, (1871), 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) [2022-12-13 21:06:38,340 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 164.0) internal successors, (3772), 23 states have internal predecessors, (3772), 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) [2022-12-13 21:06:38,341 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 164.0) internal successors, (3772), 23 states have internal predecessors, (3772), 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) [2022-12-13 21:06:38,341 INFO L175 Difference]: Start difference. First operand has 250 places, 375 transitions, 4616 flow. Second operand 22 states and 1871 transitions. [2022-12-13 21:06:38,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 1330 transitions, 20652 flow [2022-12-13 21:06:39,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 1330 transitions, 19882 flow, removed 0 selfloop flow, removed 11 redundant places. [2022-12-13 21:06:39,095 INFO L231 Difference]: Finished difference. Result has 267 places, 459 transitions, 6216 flow [2022-12-13 21:06:39,095 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=4462, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=186, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=6216, PETRI_PLACES=267, PETRI_TRANSITIONS=459} [2022-12-13 21:06:39,095 INFO L288 CegarLoopForPetriNet]: 17 programPoint places, 250 predicate places. [2022-12-13 21:06:39,096 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 459 transitions, 6216 flow [2022-12-13 21:06:39,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 81.17391304347827) internal successors, (1867), 23 states have internal predecessors, (1867), 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) [2022-12-13 21:06:39,097 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:06:39,097 INFO L209 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:06:39,102 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f9b6f0-7134-4d60-b6cf-d44aff0b90f5/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-13 21:06:39,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f9b6f0-7134-4d60-b6cf-d44aff0b90f5/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:06:39,299 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 21:06:39,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:06:39,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1209821166, now seen corresponding path program 7 times [2022-12-13 21:06:39,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:06:39,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586031695] [2022-12-13 21:06:39,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:06:39,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:06:39,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:06:41,876 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:06:41,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:06:41,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586031695] [2022-12-13 21:06:41,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586031695] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:06:41,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [608779297] [2022-12-13 21:06:41,877 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 21:06:41,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:06:41,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f9b6f0-7134-4d60-b6cf-d44aff0b90f5/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:06:41,878 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f9b6f0-7134-4d60-b6cf-d44aff0b90f5/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:06:41,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67f9b6f0-7134-4d60-b6cf-d44aff0b90f5/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 21:06:42,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:06:42,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 816 conjuncts, 168 conjunts are in the unsatisfiable core [2022-12-13 21:06:42,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:06:42,463 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:06:42,463 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:06:42,861 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:06:42,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [608779297] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:06:42,861 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 21:06:42,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61, 61] total 61 [2022-12-13 21:06:42,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495130677] [2022-12-13 21:06:42,862 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 21:06:42,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-12-13 21:06:42,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:06:42,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-12-13 21:06:42,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=3783, Unknown=0, NotChecked=0, Total=3906 [2022-12-13 21:06:43,848 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 164 [2022-12-13 21:06:43,851 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 459 transitions, 6216 flow. Second operand has 63 states, 63 states have (on average 77.34920634920636) internal successors, (4873), 63 states have internal predecessors, (4873), 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) [2022-12-13 21:06:43,851 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:06:43,851 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 164 [2022-12-13 21:06:43,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand