./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/triangular-longer-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a02336-b7a0-49e5-9b2b-9e9b19c78110/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a02336-b7a0-49e5-9b2b-9e9b19c78110/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a02336-b7a0-49e5-9b2b-9e9b19c78110/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a02336-b7a0-49e5-9b2b-9e9b19c78110/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/triangular-longer-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a02336-b7a0-49e5-9b2b-9e9b19c78110/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a02336-b7a0-49e5-9b2b-9e9b19c78110/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1e30b67a045ce6921ac9aa6cdcebddb50c3d7d787a6b9dd7b66c9173f916fde4 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 19:32:30,697 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:32:30,699 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:32:30,722 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:32:30,723 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:32:30,724 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:32:30,726 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:32:30,729 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:32:30,731 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:32:30,732 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:32:30,734 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:32:30,735 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:32:30,736 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:32:30,737 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:32:30,739 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:32:30,740 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:32:30,741 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:32:30,743 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:32:30,745 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:32:30,747 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:32:30,749 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:32:30,750 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:32:30,752 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:32:30,753 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:32:30,758 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:32:30,758 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:32:30,759 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:32:30,760 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:32:30,761 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:32:30,762 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:32:30,763 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:32:30,764 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:32:30,765 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:32:30,766 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:32:30,767 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:32:30,768 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:32:30,769 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:32:30,769 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:32:30,769 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:32:30,771 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:32:30,771 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:32:30,773 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a02336-b7a0-49e5-9b2b-9e9b19c78110/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 19:32:30,797 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:32:30,798 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:32:30,798 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:32:30,799 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:32:30,799 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:32:30,800 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:32:30,801 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:32:30,801 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:32:30,801 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:32:30,802 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:32:30,802 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 19:32:30,802 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:32:30,803 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 19:32:30,803 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:32:30,803 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 19:32:30,804 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:32:30,804 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 19:32:30,804 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 19:32:30,805 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 19:32:30,805 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:32:30,805 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 19:32:30,806 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:32:30,806 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:32:30,806 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:32:30,807 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:32:30,807 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:32:30,807 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:32:30,808 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 19:32:30,808 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:32:30,808 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:32:30,809 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 19:32:30,809 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 19:32:30,809 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 19:32:30,810 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a02336-b7a0-49e5-9b2b-9e9b19c78110/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a02336-b7a0-49e5-9b2b-9e9b19c78110/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1e30b67a045ce6921ac9aa6cdcebddb50c3d7d787a6b9dd7b66c9173f916fde4 [2022-11-18 19:32:31,102 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:32:31,128 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:32:31,131 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:32:31,132 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:32:31,133 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:32:31,135 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a02336-b7a0-49e5-9b2b-9e9b19c78110/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/pthread/triangular-longer-1.i [2022-11-18 19:32:31,214 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a02336-b7a0-49e5-9b2b-9e9b19c78110/bin/uautomizer-TMbwUNV5ro/data/84423bd47/da329a7d3fd645f399318d9855d7cf7d/FLAG62b866b71 [2022-11-18 19:32:31,841 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:32:31,841 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a02336-b7a0-49e5-9b2b-9e9b19c78110/sv-benchmarks/c/pthread/triangular-longer-1.i [2022-11-18 19:32:31,858 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a02336-b7a0-49e5-9b2b-9e9b19c78110/bin/uautomizer-TMbwUNV5ro/data/84423bd47/da329a7d3fd645f399318d9855d7cf7d/FLAG62b866b71 [2022-11-18 19:32:32,178 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a02336-b7a0-49e5-9b2b-9e9b19c78110/bin/uautomizer-TMbwUNV5ro/data/84423bd47/da329a7d3fd645f399318d9855d7cf7d [2022-11-18 19:32:32,187 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:32:32,188 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:32:32,191 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:32:32,191 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:32:32,198 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:32:32,199 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:32:32" (1/1) ... [2022-11-18 19:32:32,201 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@286ae18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:32, skipping insertion in model container [2022-11-18 19:32:32,201 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:32:32" (1/1) ... [2022-11-18 19:32:32,209 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:32:32,248 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:32:32,667 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a02336-b7a0-49e5-9b2b-9e9b19c78110/sv-benchmarks/c/pthread/triangular-longer-1.i[30961,30974] [2022-11-18 19:32:32,673 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:32:32,682 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:32:32,728 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a02336-b7a0-49e5-9b2b-9e9b19c78110/sv-benchmarks/c/pthread/triangular-longer-1.i[30961,30974] [2022-11-18 19:32:32,729 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:32:32,769 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:32:32,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:32 WrapperNode [2022-11-18 19:32:32,773 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:32:32,775 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:32:32,775 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:32:32,775 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:32:32,784 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:32" (1/1) ... [2022-11-18 19:32:32,815 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:32" (1/1) ... [2022-11-18 19:32:32,844 INFO L138 Inliner]: procedures = 169, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 47 [2022-11-18 19:32:32,845 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:32:32,846 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:32:32,846 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:32:32,847 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:32:32,857 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:32" (1/1) ... [2022-11-18 19:32:32,858 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:32" (1/1) ... [2022-11-18 19:32:32,874 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:32" (1/1) ... [2022-11-18 19:32:32,876 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:32" (1/1) ... [2022-11-18 19:32:32,883 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:32" (1/1) ... [2022-11-18 19:32:32,896 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:32" (1/1) ... [2022-11-18 19:32:32,899 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:32" (1/1) ... [2022-11-18 19:32:32,911 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:32" (1/1) ... [2022-11-18 19:32:32,913 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:32:32,914 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:32:32,914 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:32:32,915 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:32:32,916 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:32" (1/1) ... [2022-11-18 19:32:32,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:32:32,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a02336-b7a0-49e5-9b2b-9e9b19c78110/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:32:32,969 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a02336-b7a0-49e5-9b2b-9e9b19c78110/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:32:32,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a02336-b7a0-49e5-9b2b-9e9b19c78110/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:32:33,023 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-11-18 19:32:33,023 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-11-18 19:32:33,023 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-11-18 19:32:33,023 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-11-18 19:32:33,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 19:32:33,024 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-18 19:32:33,024 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:32:33,024 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 19:32:33,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 19:32:33,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 19:32:33,025 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-18 19:32:33,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:32:33,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:32:33,027 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 19:32:33,190 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:32:33,193 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:32:33,504 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:32:33,512 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:32:33,512 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-18 19:32:33,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:32:33 BoogieIcfgContainer [2022-11-18 19:32:33,515 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:32:33,518 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:32:33,518 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:32:33,522 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:32:33,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:32:32" (1/3) ... [2022-11-18 19:32:33,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71c09a18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:32:33, skipping insertion in model container [2022-11-18 19:32:33,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:32" (2/3) ... [2022-11-18 19:32:33,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71c09a18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:32:33, skipping insertion in model container [2022-11-18 19:32:33,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:32:33" (3/3) ... [2022-11-18 19:32:33,526 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longer-1.i [2022-11-18 19:32:33,537 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 19:32:33,550 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:32:33,550 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 19:32:33,550 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 19:32:33,672 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-18 19:32:33,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 72 places, 70 transitions, 150 flow [2022-11-18 19:32:33,800 INFO L130 PetriNetUnfolder]: 5/68 cut-off events. [2022-11-18 19:32:33,800 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 19:32:33,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 68 events. 5/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 62 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2022-11-18 19:32:33,807 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 70 transitions, 150 flow [2022-11-18 19:32:33,813 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 68 transitions, 142 flow [2022-11-18 19:32:33,826 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:32:33,834 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;@51fe8f75, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:32:33,835 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-18 19:32:33,857 INFO L130 PetriNetUnfolder]: 4/57 cut-off events. [2022-11-18 19:32:33,857 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 19:32:33,858 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:32:33,859 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:32:33,859 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 19:32:33,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:33,866 INFO L85 PathProgramCache]: Analyzing trace with hash 398220865, now seen corresponding path program 1 times [2022-11-18 19:32:33,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:32:33,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489519067] [2022-11-18 19:32:33,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:32:33,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:32:34,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:34,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:32:34,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:32:34,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489519067] [2022-11-18 19:32:34,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489519067] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:32:34,778 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:32:34,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 19:32:34,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270268097] [2022-11-18 19:32:34,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:32:34,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:32:34,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:32:34,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:32:34,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:32:34,846 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2022-11-18 19:32:34,850 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 68 transitions, 142 flow. Second operand has 6 states, 6 states have (on average 56.333333333333336) internal successors, (338), 6 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:34,851 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:32:34,851 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2022-11-18 19:32:34,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:32:35,076 INFO L130 PetriNetUnfolder]: 42/203 cut-off events. [2022-11-18 19:32:35,077 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-18 19:32:35,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 283 conditions, 203 events. 42/203 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 766 event pairs, 3 based on Foata normal form. 45/231 useless extension candidates. Maximal degree in co-relation 250. Up to 28 conditions per place. [2022-11-18 19:32:35,082 INFO L137 encePairwiseOnDemand]: 59/70 looper letters, 22 selfloop transitions, 17 changer transitions 0/92 dead transitions. [2022-11-18 19:32:35,082 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 92 transitions, 271 flow [2022-11-18 19:32:35,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 19:32:35,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-18 19:32:35,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 613 transitions. [2022-11-18 19:32:35,103 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8757142857142857 [2022-11-18 19:32:35,104 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 613 transitions. [2022-11-18 19:32:35,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 613 transitions. [2022-11-18 19:32:35,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:32:35,111 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 613 transitions. [2022-11-18 19:32:35,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 61.3) internal successors, (613), 10 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:35,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 70.0) internal successors, (770), 11 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:35,125 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 70.0) internal successors, (770), 11 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:35,127 INFO L175 Difference]: Start difference. First operand has 70 places, 68 transitions, 142 flow. Second operand 10 states and 613 transitions. [2022-11-18 19:32:35,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 92 transitions, 271 flow [2022-11-18 19:32:35,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 92 transitions, 268 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 19:32:35,136 INFO L231 Difference]: Finished difference. Result has 85 places, 85 transitions, 276 flow [2022-11-18 19:32:35,139 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=276, PETRI_PLACES=85, PETRI_TRANSITIONS=85} [2022-11-18 19:32:35,143 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, 15 predicate places. [2022-11-18 19:32:35,144 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 85 transitions, 276 flow [2022-11-18 19:32:35,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 56.333333333333336) internal successors, (338), 6 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:35,145 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:32:35,145 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:32:35,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 19:32:35,146 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 19:32:35,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:35,147 INFO L85 PathProgramCache]: Analyzing trace with hash 245149124, now seen corresponding path program 1 times [2022-11-18 19:32:35,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:32:35,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795145321] [2022-11-18 19:32:35,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:32:35,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:32:35,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:35,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:32:35,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:32:35,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795145321] [2022-11-18 19:32:35,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795145321] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:32:35,525 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:32:35,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 19:32:35,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307133809] [2022-11-18 19:32:35,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:32:35,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:32:35,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:32:35,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:32:35,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:32:35,538 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2022-11-18 19:32:35,541 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 85 transitions, 276 flow. Second operand has 6 states, 6 states have (on average 56.5) internal successors, (339), 6 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:35,542 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:32:35,543 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2022-11-18 19:32:35,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:32:35,839 INFO L130 PetriNetUnfolder]: 46/218 cut-off events. [2022-11-18 19:32:35,847 INFO L131 PetriNetUnfolder]: For 115/120 co-relation queries the response was YES. [2022-11-18 19:32:35,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 421 conditions, 218 events. 46/218 cut-off events. For 115/120 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 852 event pairs, 0 based on Foata normal form. 3/205 useless extension candidates. Maximal degree in co-relation 377. Up to 35 conditions per place. [2022-11-18 19:32:35,856 INFO L137 encePairwiseOnDemand]: 63/70 looper letters, 16 selfloop transitions, 9 changer transitions 40/110 dead transitions. [2022-11-18 19:32:35,856 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 110 transitions, 508 flow [2022-11-18 19:32:35,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 19:32:35,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 19:32:35,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 475 transitions. [2022-11-18 19:32:35,862 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8482142857142857 [2022-11-18 19:32:35,863 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 475 transitions. [2022-11-18 19:32:35,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 475 transitions. [2022-11-18 19:32:35,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:32:35,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 475 transitions. [2022-11-18 19:32:35,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 59.375) internal successors, (475), 8 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:35,868 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 70.0) internal successors, (630), 9 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:35,868 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 70.0) internal successors, (630), 9 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:35,869 INFO L175 Difference]: Start difference. First operand has 85 places, 85 transitions, 276 flow. Second operand 8 states and 475 transitions. [2022-11-18 19:32:35,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 110 transitions, 508 flow [2022-11-18 19:32:35,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 110 transitions, 508 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 19:32:35,883 INFO L231 Difference]: Finished difference. Result has 96 places, 67 transitions, 237 flow [2022-11-18 19:32:35,883 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=237, PETRI_PLACES=96, PETRI_TRANSITIONS=67} [2022-11-18 19:32:35,884 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, 26 predicate places. [2022-11-18 19:32:35,885 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 67 transitions, 237 flow [2022-11-18 19:32:35,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 56.5) internal successors, (339), 6 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:35,885 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:32:35,885 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:32:35,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 19:32:35,886 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 19:32:35,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:35,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1444168350, now seen corresponding path program 1 times [2022-11-18 19:32:35,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:32:35,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950520707] [2022-11-18 19:32:35,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:32:35,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:32:35,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:36,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:32:36,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:32:36,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950520707] [2022-11-18 19:32:36,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950520707] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:32:36,080 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:32:36,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 19:32:36,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162948579] [2022-11-18 19:32:36,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:32:36,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:32:36,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:32:36,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:32:36,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:32:36,084 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2022-11-18 19:32:36,085 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 67 transitions, 237 flow. Second operand has 6 states, 6 states have (on average 56.5) internal successors, (339), 6 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:36,085 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:32:36,085 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2022-11-18 19:32:36,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:32:36,242 INFO L130 PetriNetUnfolder]: 37/195 cut-off events. [2022-11-18 19:32:36,242 INFO L131 PetriNetUnfolder]: For 255/264 co-relation queries the response was YES. [2022-11-18 19:32:36,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 411 conditions, 195 events. 37/195 cut-off events. For 255/264 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 642 event pairs, 0 based on Foata normal form. 12/188 useless extension candidates. Maximal degree in co-relation 361. Up to 35 conditions per place. [2022-11-18 19:32:36,248 INFO L137 encePairwiseOnDemand]: 64/70 looper letters, 23 selfloop transitions, 11 changer transitions 8/87 dead transitions. [2022-11-18 19:32:36,248 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 87 transitions, 457 flow [2022-11-18 19:32:36,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:32:36,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 19:32:36,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 530 transitions. [2022-11-18 19:32:36,252 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8412698412698413 [2022-11-18 19:32:36,252 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 530 transitions. [2022-11-18 19:32:36,252 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 530 transitions. [2022-11-18 19:32:36,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:32:36,253 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 530 transitions. [2022-11-18 19:32:36,255 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 58.888888888888886) internal successors, (530), 9 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:36,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 70.0) internal successors, (700), 10 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:36,258 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 70.0) internal successors, (700), 10 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:36,259 INFO L175 Difference]: Start difference. First operand has 96 places, 67 transitions, 237 flow. Second operand 9 states and 530 transitions. [2022-11-18 19:32:36,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 87 transitions, 457 flow [2022-11-18 19:32:36,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 87 transitions, 387 flow, removed 25 selfloop flow, removed 9 redundant places. [2022-11-18 19:32:36,265 INFO L231 Difference]: Finished difference. Result has 86 places, 72 transitions, 289 flow [2022-11-18 19:32:36,266 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=289, PETRI_PLACES=86, PETRI_TRANSITIONS=72} [2022-11-18 19:32:36,267 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, 16 predicate places. [2022-11-18 19:32:36,267 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 72 transitions, 289 flow [2022-11-18 19:32:36,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 56.5) internal successors, (339), 6 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:36,268 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:32:36,268 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:32:36,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 19:32:36,269 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 19:32:36,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:36,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1245653052, now seen corresponding path program 2 times [2022-11-18 19:32:36,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:32:36,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375169756] [2022-11-18 19:32:36,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:32:36,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:32:36,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:36,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:32:36,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:32:36,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375169756] [2022-11-18 19:32:36,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375169756] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:32:36,497 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:32:36,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 19:32:36,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517529469] [2022-11-18 19:32:36,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:32:36,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:32:36,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:32:36,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:32:36,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:32:36,508 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2022-11-18 19:32:36,508 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 72 transitions, 289 flow. Second operand has 6 states, 6 states have (on average 56.5) internal successors, (339), 6 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:36,509 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:32:36,509 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2022-11-18 19:32:36,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:32:36,734 INFO L130 PetriNetUnfolder]: 30/184 cut-off events. [2022-11-18 19:32:36,734 INFO L131 PetriNetUnfolder]: For 240/261 co-relation queries the response was YES. [2022-11-18 19:32:36,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 404 conditions, 184 events. 30/184 cut-off events. For 240/261 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 612 event pairs, 0 based on Foata normal form. 18/184 useless extension candidates. Maximal degree in co-relation 372. Up to 32 conditions per place. [2022-11-18 19:32:36,738 INFO L137 encePairwiseOnDemand]: 63/70 looper letters, 19 selfloop transitions, 12 changer transitions 11/87 dead transitions. [2022-11-18 19:32:36,738 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 87 transitions, 487 flow [2022-11-18 19:32:36,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:32:36,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 19:32:36,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 524 transitions. [2022-11-18 19:32:36,741 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8317460317460318 [2022-11-18 19:32:36,742 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 524 transitions. [2022-11-18 19:32:36,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 524 transitions. [2022-11-18 19:32:36,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:32:36,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 524 transitions. [2022-11-18 19:32:36,746 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:36,752 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 70.0) internal successors, (700), 10 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:36,753 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 70.0) internal successors, (700), 10 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:36,753 INFO L175 Difference]: Start difference. First operand has 86 places, 72 transitions, 289 flow. Second operand 9 states and 524 transitions. [2022-11-18 19:32:36,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 87 transitions, 487 flow [2022-11-18 19:32:36,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 87 transitions, 467 flow, removed 6 selfloop flow, removed 3 redundant places. [2022-11-18 19:32:36,765 INFO L231 Difference]: Finished difference. Result has 93 places, 73 transitions, 332 flow [2022-11-18 19:32:36,765 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=332, PETRI_PLACES=93, PETRI_TRANSITIONS=73} [2022-11-18 19:32:36,767 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, 23 predicate places. [2022-11-18 19:32:36,767 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 73 transitions, 332 flow [2022-11-18 19:32:36,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 56.5) internal successors, (339), 6 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:36,773 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:32:36,774 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:32:36,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 19:32:36,774 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 19:32:36,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:36,776 INFO L85 PathProgramCache]: Analyzing trace with hash -150168411, now seen corresponding path program 1 times [2022-11-18 19:32:36,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:32:36,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377224472] [2022-11-18 19:32:36,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:32:36,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:32:36,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:37,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:32:37,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:32:37,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377224472] [2022-11-18 19:32:37,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377224472] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:32:37,076 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:32:37,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:32:37,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583772927] [2022-11-18 19:32:37,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:32:37,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:32:37,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:32:37,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:32:37,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:32:37,087 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2022-11-18 19:32:37,088 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 73 transitions, 332 flow. Second operand has 7 states, 7 states have (on average 56.42857142857143) internal successors, (395), 7 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:37,088 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:32:37,088 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2022-11-18 19:32:37,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:32:37,275 INFO L130 PetriNetUnfolder]: 43/234 cut-off events. [2022-11-18 19:32:37,275 INFO L131 PetriNetUnfolder]: For 614/638 co-relation queries the response was YES. [2022-11-18 19:32:37,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 589 conditions, 234 events. 43/234 cut-off events. For 614/638 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 837 event pairs, 1 based on Foata normal form. 17/229 useless extension candidates. Maximal degree in co-relation 535. Up to 50 conditions per place. [2022-11-18 19:32:37,279 INFO L137 encePairwiseOnDemand]: 63/70 looper letters, 23 selfloop transitions, 21 changer transitions 8/97 dead transitions. [2022-11-18 19:32:37,279 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 97 transitions, 660 flow [2022-11-18 19:32:37,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 19:32:37,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 19:32:37,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 644 transitions. [2022-11-18 19:32:37,282 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8363636363636363 [2022-11-18 19:32:37,283 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 644 transitions. [2022-11-18 19:32:37,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 644 transitions. [2022-11-18 19:32:37,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:32:37,284 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 644 transitions. [2022-11-18 19:32:37,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 58.54545454545455) internal successors, (644), 11 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:37,288 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 70.0) internal successors, (840), 12 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:37,289 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 70.0) internal successors, (840), 12 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:37,289 INFO L175 Difference]: Start difference. First operand has 93 places, 73 transitions, 332 flow. Second operand 11 states and 644 transitions. [2022-11-18 19:32:37,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 97 transitions, 660 flow [2022-11-18 19:32:37,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 97 transitions, 544 flow, removed 45 selfloop flow, removed 10 redundant places. [2022-11-18 19:32:37,297 INFO L231 Difference]: Finished difference. Result has 97 places, 79 transitions, 417 flow [2022-11-18 19:32:37,298 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=417, PETRI_PLACES=97, PETRI_TRANSITIONS=79} [2022-11-18 19:32:37,302 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, 27 predicate places. [2022-11-18 19:32:37,302 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 79 transitions, 417 flow [2022-11-18 19:32:37,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 56.42857142857143) internal successors, (395), 7 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:37,303 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:32:37,303 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:32:37,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 19:32:37,304 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 19:32:37,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:37,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1283973881, now seen corresponding path program 2 times [2022-11-18 19:32:37,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:32:37,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443454988] [2022-11-18 19:32:37,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:32:37,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:32:37,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:37,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:32:37,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:32:37,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443454988] [2022-11-18 19:32:37,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443454988] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:32:37,498 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:32:37,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:32:37,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649531835] [2022-11-18 19:32:37,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:32:37,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:32:37,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:32:37,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:32:37,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:32:37,503 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2022-11-18 19:32:37,504 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 79 transitions, 417 flow. Second operand has 7 states, 7 states have (on average 56.42857142857143) internal successors, (395), 7 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:37,504 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:32:37,504 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2022-11-18 19:32:37,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:32:37,729 INFO L130 PetriNetUnfolder]: 36/216 cut-off events. [2022-11-18 19:32:37,729 INFO L131 PetriNetUnfolder]: For 788/823 co-relation queries the response was YES. [2022-11-18 19:32:37,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 602 conditions, 216 events. 36/216 cut-off events. For 788/823 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 761 event pairs, 1 based on Foata normal form. 27/223 useless extension candidates. Maximal degree in co-relation 558. Up to 44 conditions per place. [2022-11-18 19:32:37,734 INFO L137 encePairwiseOnDemand]: 63/70 looper letters, 20 selfloop transitions, 21 changer transitions 11/97 dead transitions. [2022-11-18 19:32:37,734 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 97 transitions, 749 flow [2022-11-18 19:32:37,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 19:32:37,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 19:32:37,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 638 transitions. [2022-11-18 19:32:37,737 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8285714285714286 [2022-11-18 19:32:37,737 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 638 transitions. [2022-11-18 19:32:37,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 638 transitions. [2022-11-18 19:32:37,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:32:37,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 638 transitions. [2022-11-18 19:32:37,740 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 58.0) internal successors, (638), 11 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:37,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 70.0) internal successors, (840), 12 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:37,745 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 70.0) internal successors, (840), 12 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:37,745 INFO L175 Difference]: Start difference. First operand has 97 places, 79 transitions, 417 flow. Second operand 11 states and 638 transitions. [2022-11-18 19:32:37,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 97 transitions, 749 flow [2022-11-18 19:32:37,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 97 transitions, 693 flow, removed 19 selfloop flow, removed 5 redundant places. [2022-11-18 19:32:37,754 INFO L231 Difference]: Finished difference. Result has 104 places, 80 transitions, 470 flow [2022-11-18 19:32:37,754 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=383, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=470, PETRI_PLACES=104, PETRI_TRANSITIONS=80} [2022-11-18 19:32:37,758 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, 34 predicate places. [2022-11-18 19:32:37,758 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 80 transitions, 470 flow [2022-11-18 19:32:37,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 56.42857142857143) internal successors, (395), 7 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:37,760 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:32:37,760 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:32:37,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 19:32:37,761 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 19:32:37,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:37,761 INFO L85 PathProgramCache]: Analyzing trace with hash -949175033, now seen corresponding path program 3 times [2022-11-18 19:32:37,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:32:37,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649032787] [2022-11-18 19:32:37,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:32:37,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:32:37,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:37,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:32:37,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:32:37,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649032787] [2022-11-18 19:32:37,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649032787] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:32:37,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:32:37,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:32:37,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661379226] [2022-11-18 19:32:37,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:32:37,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:32:37,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:32:37,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:32:37,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:32:37,993 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2022-11-18 19:32:37,994 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 80 transitions, 470 flow. Second operand has 7 states, 7 states have (on average 56.42857142857143) internal successors, (395), 7 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:37,994 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:32:37,995 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2022-11-18 19:32:37,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:32:38,231 INFO L130 PetriNetUnfolder]: 35/201 cut-off events. [2022-11-18 19:32:38,231 INFO L131 PetriNetUnfolder]: For 899/928 co-relation queries the response was YES. [2022-11-18 19:32:38,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 604 conditions, 201 events. 35/201 cut-off events. For 899/928 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 736 event pairs, 0 based on Foata normal form. 23/207 useless extension candidates. Maximal degree in co-relation 556. Up to 42 conditions per place. [2022-11-18 19:32:38,234 INFO L137 encePairwiseOnDemand]: 63/70 looper letters, 25 selfloop transitions, 17 changer transitions 5/92 dead transitions. [2022-11-18 19:32:38,235 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 92 transitions, 718 flow [2022-11-18 19:32:38,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 19:32:38,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-18 19:32:38,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 695 transitions. [2022-11-18 19:32:38,239 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8273809523809523 [2022-11-18 19:32:38,239 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 695 transitions. [2022-11-18 19:32:38,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 695 transitions. [2022-11-18 19:32:38,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:32:38,240 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 695 transitions. [2022-11-18 19:32:38,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 57.916666666666664) internal successors, (695), 12 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:38,245 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 70.0) internal successors, (910), 13 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:38,246 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 70.0) internal successors, (910), 13 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:38,246 INFO L175 Difference]: Start difference. First operand has 104 places, 80 transitions, 470 flow. Second operand 12 states and 695 transitions. [2022-11-18 19:32:38,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 92 transitions, 718 flow [2022-11-18 19:32:38,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 92 transitions, 644 flow, removed 19 selfloop flow, removed 9 redundant places. [2022-11-18 19:32:38,258 INFO L231 Difference]: Finished difference. Result has 107 places, 83 transitions, 503 flow [2022-11-18 19:32:38,259 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=503, PETRI_PLACES=107, PETRI_TRANSITIONS=83} [2022-11-18 19:32:38,260 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, 37 predicate places. [2022-11-18 19:32:38,260 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 83 transitions, 503 flow [2022-11-18 19:32:38,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 56.42857142857143) internal successors, (395), 7 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:38,260 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:32:38,261 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:32:38,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 19:32:38,261 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 19:32:38,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:38,263 INFO L85 PathProgramCache]: Analyzing trace with hash 270829877, now seen corresponding path program 1 times [2022-11-18 19:32:38,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:32:38,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804093698] [2022-11-18 19:32:38,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:32:38,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:32:38,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:38,523 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:32:38,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:32:38,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804093698] [2022-11-18 19:32:38,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804093698] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:32:38,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254182614] [2022-11-18 19:32:38,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:32:38,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:32:38,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a02336-b7a0-49e5-9b2b-9e9b19c78110/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:32:38,532 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a02336-b7a0-49e5-9b2b-9e9b19c78110/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:32:38,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a02336-b7a0-49e5-9b2b-9e9b19c78110/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 19:32:38,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:38,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 19:32:38,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:32:38,907 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:32:38,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:32:39,084 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:32:39,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254182614] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:32:39,085 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:32:39,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2022-11-18 19:32:39,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656632197] [2022-11-18 19:32:39,086 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:32:39,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 19:32:39,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:32:39,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 19:32:39,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-11-18 19:32:39,089 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2022-11-18 19:32:39,090 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 83 transitions, 503 flow. Second operand has 13 states, 13 states have (on average 56.61538461538461) internal successors, (736), 13 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:39,090 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:32:39,090 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2022-11-18 19:32:39,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:32:39,559 INFO L130 PetriNetUnfolder]: 53/299 cut-off events. [2022-11-18 19:32:39,560 INFO L131 PetriNetUnfolder]: For 1219/1259 co-relation queries the response was YES. [2022-11-18 19:32:39,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 890 conditions, 299 events. 53/299 cut-off events. For 1219/1259 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1141 event pairs, 1 based on Foata normal form. 28/298 useless extension candidates. Maximal degree in co-relation 843. Up to 64 conditions per place. [2022-11-18 19:32:39,564 INFO L137 encePairwiseOnDemand]: 63/70 looper letters, 27 selfloop transitions, 36 changer transitions 14/122 dead transitions. [2022-11-18 19:32:39,564 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 122 transitions, 1187 flow [2022-11-18 19:32:39,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-18 19:32:39,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-18 19:32:39,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1159 transitions. [2022-11-18 19:32:39,568 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8278571428571428 [2022-11-18 19:32:39,569 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1159 transitions. [2022-11-18 19:32:39,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1159 transitions. [2022-11-18 19:32:39,570 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:32:39,570 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1159 transitions. [2022-11-18 19:32:39,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 57.95) internal successors, (1159), 20 states have internal predecessors, (1159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:39,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 70.0) internal successors, (1470), 21 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:39,577 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 70.0) internal successors, (1470), 21 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:39,577 INFO L175 Difference]: Start difference. First operand has 107 places, 83 transitions, 503 flow. Second operand 20 states and 1159 transitions. [2022-11-18 19:32:39,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 122 transitions, 1187 flow [2022-11-18 19:32:39,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 122 transitions, 1151 flow, removed 10 selfloop flow, removed 7 redundant places. [2022-11-18 19:32:39,588 INFO L231 Difference]: Finished difference. Result has 127 places, 99 transitions, 828 flow [2022-11-18 19:32:39,588 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=828, PETRI_PLACES=127, PETRI_TRANSITIONS=99} [2022-11-18 19:32:39,589 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, 57 predicate places. [2022-11-18 19:32:39,589 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 99 transitions, 828 flow [2022-11-18 19:32:39,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 56.61538461538461) internal successors, (736), 13 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:39,590 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:32:39,590 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:32:39,603 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a02336-b7a0-49e5-9b2b-9e9b19c78110/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 19:32:39,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a02336-b7a0-49e5-9b2b-9e9b19c78110/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:32:39,797 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 19:32:39,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:39,798 INFO L85 PathProgramCache]: Analyzing trace with hash -2022110288, now seen corresponding path program 1 times [2022-11-18 19:32:39,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:32:39,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248527696] [2022-11-18 19:32:39,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:32:39,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:32:39,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:40,096 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 19:32:40,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:32:40,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248527696] [2022-11-18 19:32:40,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248527696] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:32:40,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076947708] [2022-11-18 19:32:40,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:32:40,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:32:40,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a02336-b7a0-49e5-9b2b-9e9b19c78110/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:32:40,098 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a02336-b7a0-49e5-9b2b-9e9b19c78110/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:32:40,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a02336-b7a0-49e5-9b2b-9e9b19c78110/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 19:32:40,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:40,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-18 19:32:40,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:32:40,448 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 19:32:40,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:32:40,842 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 19:32:40,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076947708] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:32:40,843 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:32:40,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 17 [2022-11-18 19:32:40,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288453496] [2022-11-18 19:32:40,843 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:32:40,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-18 19:32:40,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:32:40,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-18 19:32:40,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2022-11-18 19:32:40,847 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2022-11-18 19:32:40,849 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 99 transitions, 828 flow. Second operand has 17 states, 17 states have (on average 56.64705882352941) internal successors, (963), 17 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:40,849 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:32:40,850 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2022-11-18 19:32:40,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:32:41,450 INFO L130 PetriNetUnfolder]: 75/452 cut-off events. [2022-11-18 19:32:41,453 INFO L131 PetriNetUnfolder]: For 3341/3397 co-relation queries the response was YES. [2022-11-18 19:32:41,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1569 conditions, 452 events. 75/452 cut-off events. For 3341/3397 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1806 event pairs, 0 based on Foata normal form. 31/437 useless extension candidates. Maximal degree in co-relation 1506. Up to 100 conditions per place. [2022-11-18 19:32:41,461 INFO L137 encePairwiseOnDemand]: 64/70 looper letters, 58 selfloop transitions, 25 changer transitions 26/154 dead transitions. [2022-11-18 19:32:41,462 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 154 transitions, 2060 flow [2022-11-18 19:32:41,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-18 19:32:41,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-11-18 19:32:41,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 1450 transitions. [2022-11-18 19:32:41,469 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8285714285714286 [2022-11-18 19:32:41,470 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 1450 transitions. [2022-11-18 19:32:41,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 1450 transitions. [2022-11-18 19:32:41,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:32:41,488 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 1450 transitions. [2022-11-18 19:32:41,493 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 58.0) internal successors, (1450), 25 states have internal predecessors, (1450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:41,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 70.0) internal successors, (1820), 26 states have internal predecessors, (1820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:41,501 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 70.0) internal successors, (1820), 26 states have internal predecessors, (1820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:41,501 INFO L175 Difference]: Start difference. First operand has 127 places, 99 transitions, 828 flow. Second operand 25 states and 1450 transitions. [2022-11-18 19:32:41,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 154 transitions, 2060 flow [2022-11-18 19:32:41,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 154 transitions, 1647 flow, removed 189 selfloop flow, removed 12 redundant places. [2022-11-18 19:32:41,523 INFO L231 Difference]: Finished difference. Result has 153 places, 113 transitions, 955 flow [2022-11-18 19:32:41,523 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=627, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=955, PETRI_PLACES=153, PETRI_TRANSITIONS=113} [2022-11-18 19:32:41,525 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, 83 predicate places. [2022-11-18 19:32:41,525 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 113 transitions, 955 flow [2022-11-18 19:32:41,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 56.64705882352941) internal successors, (963), 17 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:41,526 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:32:41,526 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:32:41,539 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a02336-b7a0-49e5-9b2b-9e9b19c78110/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 19:32:41,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a02336-b7a0-49e5-9b2b-9e9b19c78110/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-18 19:32:41,734 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 19:32:41,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:41,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1596067542, now seen corresponding path program 2 times [2022-11-18 19:32:41,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:32:41,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748294169] [2022-11-18 19:32:41,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:32:41,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:32:41,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:42,063 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 19:32:42,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:32:42,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748294169] [2022-11-18 19:32:42,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748294169] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:32:42,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228383873] [2022-11-18 19:32:42,064 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:32:42,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:32:42,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a02336-b7a0-49e5-9b2b-9e9b19c78110/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:32:42,066 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a02336-b7a0-49e5-9b2b-9e9b19c78110/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:32:42,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a02336-b7a0-49e5-9b2b-9e9b19c78110/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 19:32:42,184 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:32:42,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:32:42,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-18 19:32:42,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:32:42,393 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 19:32:42,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:32:42,743 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 19:32:42,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228383873] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:32:42,744 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:32:42,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 18 [2022-11-18 19:32:42,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532883840] [2022-11-18 19:32:42,744 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:32:42,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 19:32:42,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:32:42,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 19:32:42,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2022-11-18 19:32:42,747 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2022-11-18 19:32:42,748 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 113 transitions, 955 flow. Second operand has 18 states, 18 states have (on average 56.666666666666664) internal successors, (1020), 18 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:42,748 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:32:42,748 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2022-11-18 19:32:42,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:32:43,515 INFO L130 PetriNetUnfolder]: 113/712 cut-off events. [2022-11-18 19:32:43,515 INFO L131 PetriNetUnfolder]: For 12122/12272 co-relation queries the response was YES. [2022-11-18 19:32:43,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2934 conditions, 712 events. 113/712 cut-off events. For 12122/12272 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 4137 event pairs, 0 based on Foata normal form. 31/671 useless extension candidates. Maximal degree in co-relation 2855. Up to 148 conditions per place. [2022-11-18 19:32:43,526 INFO L137 encePairwiseOnDemand]: 63/70 looper letters, 59 selfloop transitions, 72 changer transitions 26/202 dead transitions. [2022-11-18 19:32:43,526 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 202 transitions, 3279 flow [2022-11-18 19:32:43,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-18 19:32:43,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-18 19:32:43,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1851 transitions. [2022-11-18 19:32:43,531 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8263392857142857 [2022-11-18 19:32:43,531 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1851 transitions. [2022-11-18 19:32:43,531 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1851 transitions. [2022-11-18 19:32:43,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:32:43,536 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1851 transitions. [2022-11-18 19:32:43,542 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 57.84375) internal successors, (1851), 32 states have internal predecessors, (1851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:43,546 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 70.0) internal successors, (2310), 33 states have internal predecessors, (2310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:43,547 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 70.0) internal successors, (2310), 33 states have internal predecessors, (2310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:43,547 INFO L175 Difference]: Start difference. First operand has 153 places, 113 transitions, 955 flow. Second operand 32 states and 1851 transitions. [2022-11-18 19:32:43,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 202 transitions, 3279 flow [2022-11-18 19:32:43,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 202 transitions, 2817 flow, removed 223 selfloop flow, removed 13 redundant places. [2022-11-18 19:32:43,586 INFO L231 Difference]: Finished difference. Result has 185 places, 151 transitions, 1736 flow [2022-11-18 19:32:43,587 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=829, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1736, PETRI_PLACES=185, PETRI_TRANSITIONS=151} [2022-11-18 19:32:43,588 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, 115 predicate places. [2022-11-18 19:32:43,588 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 151 transitions, 1736 flow [2022-11-18 19:32:43,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 56.666666666666664) internal successors, (1020), 18 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:43,589 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:32:43,589 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:32:43,600 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a02336-b7a0-49e5-9b2b-9e9b19c78110/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 19:32:43,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a02336-b7a0-49e5-9b2b-9e9b19c78110/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-18 19:32:43,800 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 19:32:43,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:43,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1214506290, now seen corresponding path program 3 times [2022-11-18 19:32:43,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:32:43,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566234252] [2022-11-18 19:32:43,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:32:43,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:32:43,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:44,043 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 19:32:44,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:32:44,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566234252] [2022-11-18 19:32:44,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566234252] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:32:44,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192164361] [2022-11-18 19:32:44,044 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:32:44,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:32:44,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a02336-b7a0-49e5-9b2b-9e9b19c78110/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:32:44,046 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a02336-b7a0-49e5-9b2b-9e9b19c78110/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:32:44,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a02336-b7a0-49e5-9b2b-9e9b19c78110/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 19:32:44,145 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-18 19:32:44,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:32:44,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-18 19:32:44,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:32:44,260 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 19:32:44,260 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:32:44,449 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 19:32:44,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [192164361] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:32:44,449 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:32:44,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 18 [2022-11-18 19:32:44,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893739008] [2022-11-18 19:32:44,450 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:32:44,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 19:32:44,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:32:44,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 19:32:44,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2022-11-18 19:32:44,453 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2022-11-18 19:32:44,454 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 151 transitions, 1736 flow. Second operand has 18 states, 18 states have (on average 56.611111111111114) internal successors, (1019), 18 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:44,454 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:32:44,454 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2022-11-18 19:32:44,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:32:45,488 INFO L130 PetriNetUnfolder]: 154/992 cut-off events. [2022-11-18 19:32:45,488 INFO L131 PetriNetUnfolder]: For 31452/31593 co-relation queries the response was YES. [2022-11-18 19:32:45,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4905 conditions, 992 events. 154/992 cut-off events. For 31452/31593 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 6612 event pairs, 0 based on Foata normal form. 42/934 useless extension candidates. Maximal degree in co-relation 4810. Up to 198 conditions per place. [2022-11-18 19:32:45,507 INFO L137 encePairwiseOnDemand]: 63/70 looper letters, 49 selfloop transitions, 128 changer transitions 26/248 dead transitions. [2022-11-18 19:32:45,507 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 248 transitions, 5288 flow [2022-11-18 19:32:45,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-18 19:32:45,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-18 19:32:45,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 2143 transitions. [2022-11-18 19:32:45,511 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8274131274131274 [2022-11-18 19:32:45,511 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 2143 transitions. [2022-11-18 19:32:45,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 2143 transitions. [2022-11-18 19:32:45,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:32:45,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 2143 transitions. [2022-11-18 19:32:45,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 57.91891891891892) internal successors, (2143), 37 states have internal predecessors, (2143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:45,523 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 70.0) internal successors, (2660), 38 states have internal predecessors, (2660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:45,524 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 70.0) internal successors, (2660), 38 states have internal predecessors, (2660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:45,525 INFO L175 Difference]: Start difference. First operand has 185 places, 151 transitions, 1736 flow. Second operand 37 states and 2143 transitions. [2022-11-18 19:32:45,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 248 transitions, 5288 flow [2022-11-18 19:32:45,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 248 transitions, 4514 flow, removed 374 selfloop flow, removed 16 redundant places. [2022-11-18 19:32:45,597 INFO L231 Difference]: Finished difference. Result has 220 places, 193 transitions, 2781 flow [2022-11-18 19:32:45,597 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1454, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=2781, PETRI_PLACES=220, PETRI_TRANSITIONS=193} [2022-11-18 19:32:45,598 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, 150 predicate places. [2022-11-18 19:32:45,598 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 193 transitions, 2781 flow [2022-11-18 19:32:45,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 56.611111111111114) internal successors, (1019), 18 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:45,599 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:32:45,599 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:32:45,610 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a02336-b7a0-49e5-9b2b-9e9b19c78110/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 19:32:45,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a02336-b7a0-49e5-9b2b-9e9b19c78110/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:32:45,810 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 19:32:45,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:45,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1976790522, now seen corresponding path program 4 times [2022-11-18 19:32:45,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:32:45,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341320935] [2022-11-18 19:32:45,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:32:45,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:32:45,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:46,150 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:32:46,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:32:46,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341320935] [2022-11-18 19:32:46,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341320935] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:32:46,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216889566] [2022-11-18 19:32:46,151 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 19:32:46,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:32:46,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a02336-b7a0-49e5-9b2b-9e9b19c78110/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:32:46,153 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a02336-b7a0-49e5-9b2b-9e9b19c78110/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:32:46,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a02336-b7a0-49e5-9b2b-9e9b19c78110/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 19:32:46,274 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 19:32:46,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:32:46,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 19:32:46,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:32:46,467 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:32:46,467 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:32:46,840 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:32:46,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216889566] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:32:46,841 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:32:46,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 25 [2022-11-18 19:32:46,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557621942] [2022-11-18 19:32:46,844 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:32:46,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-18 19:32:46,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:32:46,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-18 19:32:46,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2022-11-18 19:32:46,848 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2022-11-18 19:32:46,850 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 193 transitions, 2781 flow. Second operand has 25 states, 25 states have (on average 56.32) internal successors, (1408), 25 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:46,851 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:32:46,851 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2022-11-18 19:32:46,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:32:48,746 INFO L130 PetriNetUnfolder]: 216/1378 cut-off events. [2022-11-18 19:32:48,747 INFO L131 PetriNetUnfolder]: For 76636/76877 co-relation queries the response was YES. [2022-11-18 19:32:48,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8508 conditions, 1378 events. 216/1378 cut-off events. For 76636/76877 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 9003 event pairs, 1 based on Foata normal form. 42/1278 useless extension candidates. Maximal degree in co-relation 8397. Up to 278 conditions per place. [2022-11-18 19:32:48,781 INFO L137 encePairwiseOnDemand]: 63/70 looper letters, 62 selfloop transitions, 183 changer transitions 32/322 dead transitions. [2022-11-18 19:32:48,782 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 322 transitions, 9410 flow [2022-11-18 19:32:48,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-11-18 19:32:48,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2022-11-18 19:32:48,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 2893 transitions. [2022-11-18 19:32:48,787 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8265714285714286 [2022-11-18 19:32:48,788 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 2893 transitions. [2022-11-18 19:32:48,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 2893 transitions. [2022-11-18 19:32:48,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:32:48,789 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 2893 transitions. [2022-11-18 19:32:48,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 57.86) internal successors, (2893), 50 states have internal predecessors, (2893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:48,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 70.0) internal successors, (3570), 51 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:48,805 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 70.0) internal successors, (3570), 51 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:48,805 INFO L175 Difference]: Start difference. First operand has 220 places, 193 transitions, 2781 flow. Second operand 50 states and 2893 transitions. [2022-11-18 19:32:48,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 322 transitions, 9410 flow [2022-11-18 19:32:48,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 322 transitions, 6914 flow, removed 1224 selfloop flow, removed 20 redundant places. [2022-11-18 19:32:48,989 INFO L231 Difference]: Finished difference. Result has 271 places, 254 transitions, 4105 flow [2022-11-18 19:32:48,990 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=2187, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=4105, PETRI_PLACES=271, PETRI_TRANSITIONS=254} [2022-11-18 19:32:48,992 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, 201 predicate places. [2022-11-18 19:32:48,992 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 254 transitions, 4105 flow [2022-11-18 19:32:48,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 56.32) internal successors, (1408), 25 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:48,994 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:32:48,995 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 9, 9, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:32:49,009 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a02336-b7a0-49e5-9b2b-9e9b19c78110/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 19:32:49,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a02336-b7a0-49e5-9b2b-9e9b19c78110/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-18 19:32:49,204 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 19:32:49,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:49,205 INFO L85 PathProgramCache]: Analyzing trace with hash 992522128, now seen corresponding path program 5 times [2022-11-18 19:32:49,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:32:49,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182667559] [2022-11-18 19:32:49,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:32:49,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:32:49,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:49,999 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 19:32:50,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:32:50,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182667559] [2022-11-18 19:32:50,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182667559] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:32:50,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92978679] [2022-11-18 19:32:50,000 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 19:32:50,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:32:50,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a02336-b7a0-49e5-9b2b-9e9b19c78110/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:32:50,002 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a02336-b7a0-49e5-9b2b-9e9b19c78110/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:32:50,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a02336-b7a0-49e5-9b2b-9e9b19c78110/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 19:32:50,149 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2022-11-18 19:32:50,150 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:32:50,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-18 19:32:50,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:32:50,605 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 19:32:50,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:32:51,579 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 19:32:51,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [92978679] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:32:51,580 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:32:51,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 29 [2022-11-18 19:32:51,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974412200] [2022-11-18 19:32:51,581 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:32:51,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-18 19:32:51,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:32:51,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-18 19:32:51,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=619, Unknown=0, NotChecked=0, Total=812 [2022-11-18 19:32:51,585 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2022-11-18 19:32:51,588 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 254 transitions, 4105 flow. Second operand has 29 states, 29 states have (on average 56.37931034482759) internal successors, (1635), 29 states have internal predecessors, (1635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:51,588 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:32:51,588 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2022-11-18 19:32:51,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:32:53,069 INFO L130 PetriNetUnfolder]: 230/1506 cut-off events. [2022-11-18 19:32:53,070 INFO L131 PetriNetUnfolder]: For 106278/106633 co-relation queries the response was YES. [2022-11-18 19:32:53,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9940 conditions, 1506 events. 230/1506 cut-off events. For 106278/106633 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 9567 event pairs, 0 based on Foata normal form. 27/1372 useless extension candidates. Maximal degree in co-relation 9808. Up to 310 conditions per place. [2022-11-18 19:32:53,116 INFO L137 encePairwiseOnDemand]: 64/70 looper letters, 208 selfloop transitions, 47 changer transitions 26/326 dead transitions. [2022-11-18 19:32:53,117 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 326 transitions, 9251 flow [2022-11-18 19:32:53,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-18 19:32:53,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-18 19:32:53,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 2134 transitions. [2022-11-18 19:32:53,122 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8239382239382239 [2022-11-18 19:32:53,122 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 2134 transitions. [2022-11-18 19:32:53,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 2134 transitions. [2022-11-18 19:32:53,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:32:53,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 2134 transitions. [2022-11-18 19:32:53,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 57.67567567567568) internal successors, (2134), 37 states have internal predecessors, (2134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:53,135 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 70.0) internal successors, (2660), 38 states have internal predecessors, (2660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:53,137 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 70.0) internal successors, (2660), 38 states have internal predecessors, (2660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:53,137 INFO L175 Difference]: Start difference. First operand has 271 places, 254 transitions, 4105 flow. Second operand 37 states and 2134 transitions. [2022-11-18 19:32:53,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 326 transitions, 9251 flow [2022-11-18 19:32:53,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 326 transitions, 7432 flow, removed 884 selfloop flow, removed 18 redundant places. [2022-11-18 19:32:53,501 INFO L231 Difference]: Finished difference. Result has 297 places, 272 transitions, 4055 flow [2022-11-18 19:32:53,502 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=3268, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=4055, PETRI_PLACES=297, PETRI_TRANSITIONS=272} [2022-11-18 19:32:53,502 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, 227 predicate places. [2022-11-18 19:32:53,503 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 272 transitions, 4055 flow [2022-11-18 19:32:53,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 56.37931034482759) internal successors, (1635), 29 states have internal predecessors, (1635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:53,505 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:32:53,505 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 9, 9, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:32:53,516 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a02336-b7a0-49e5-9b2b-9e9b19c78110/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-18 19:32:53,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a02336-b7a0-49e5-9b2b-9e9b19c78110/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:32:53,716 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 19:32:53,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:53,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1598014154, now seen corresponding path program 6 times [2022-11-18 19:32:53,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:32:53,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739004967] [2022-11-18 19:32:53,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:32:53,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:32:53,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:54,507 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 19:32:54,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:32:54,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739004967] [2022-11-18 19:32:54,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739004967] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:32:54,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440707230] [2022-11-18 19:32:54,508 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 19:32:54,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:32:54,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a02336-b7a0-49e5-9b2b-9e9b19c78110/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:32:54,510 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a02336-b7a0-49e5-9b2b-9e9b19c78110/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:32:54,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a02336-b7a0-49e5-9b2b-9e9b19c78110/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 19:32:54,670 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2022-11-18 19:32:54,670 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:32:54,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-18 19:32:54,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:32:55,250 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 19:32:55,250 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:32:56,167 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 19:32:56,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440707230] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:32:56,167 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:32:56,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 31 [2022-11-18 19:32:56,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212406486] [2022-11-18 19:32:56,168 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:32:56,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-18 19:32:56,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:32:56,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-18 19:32:56,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=741, Unknown=0, NotChecked=0, Total=930 [2022-11-18 19:32:56,173 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2022-11-18 19:32:56,176 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 272 transitions, 4055 flow. Second operand has 31 states, 31 states have (on average 56.41935483870968) internal successors, (1749), 31 states have internal predecessors, (1749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:56,176 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:32:56,176 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2022-11-18 19:32:56,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:32:58,359 INFO L130 PetriNetUnfolder]: 288/2028 cut-off events. [2022-11-18 19:32:58,359 INFO L131 PetriNetUnfolder]: For 158041/158447 co-relation queries the response was YES. [2022-11-18 19:32:58,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13065 conditions, 2028 events. 288/2028 cut-off events. For 158041/158447 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 14386 event pairs, 0 based on Foata normal form. 35/1844 useless extension candidates. Maximal degree in co-relation 12925. Up to 424 conditions per place. [2022-11-18 19:32:58,420 INFO L137 encePairwiseOnDemand]: 63/70 looper letters, 164 selfloop transitions, 161 changer transitions 26/396 dead transitions. [2022-11-18 19:32:58,420 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 396 transitions, 10108 flow [2022-11-18 19:32:58,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-18 19:32:58,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-11-18 19:32:58,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 2535 transitions. [2022-11-18 19:32:58,430 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.823051948051948 [2022-11-18 19:32:58,430 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 2535 transitions. [2022-11-18 19:32:58,430 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 2535 transitions. [2022-11-18 19:32:58,431 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:32:58,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 2535 transitions. [2022-11-18 19:32:58,439 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 57.61363636363637) internal successors, (2535), 44 states have internal predecessors, (2535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:58,445 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 70.0) internal successors, (3150), 45 states have internal predecessors, (3150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:58,447 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 70.0) internal successors, (3150), 45 states have internal predecessors, (3150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:58,447 INFO L175 Difference]: Start difference. First operand has 297 places, 272 transitions, 4055 flow. Second operand 44 states and 2535 transitions. [2022-11-18 19:32:58,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 396 transitions, 10108 flow [2022-11-18 19:32:58,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 396 transitions, 9187 flow, removed 435 selfloop flow, removed 23 redundant places. [2022-11-18 19:32:58,980 INFO L231 Difference]: Finished difference. Result has 329 places, 329 transitions, 5357 flow [2022-11-18 19:32:58,981 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=3534, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=5357, PETRI_PLACES=329, PETRI_TRANSITIONS=329} [2022-11-18 19:32:58,982 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, 259 predicate places. [2022-11-18 19:32:58,982 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 329 transitions, 5357 flow [2022-11-18 19:32:58,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 56.41935483870968) internal successors, (1749), 31 states have internal predecessors, (1749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:32:58,983 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:32:58,984 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 9, 9, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:32:58,996 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a02336-b7a0-49e5-9b2b-9e9b19c78110/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 19:32:59,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a02336-b7a0-49e5-9b2b-9e9b19c78110/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:32:59,194 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 19:32:59,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:32:59,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1923481798, now seen corresponding path program 7 times [2022-11-18 19:32:59,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:32:59,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008388253] [2022-11-18 19:32:59,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:32:59,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:32:59,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:32:59,896 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 19:32:59,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:32:59,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008388253] [2022-11-18 19:32:59,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008388253] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:32:59,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711598818] [2022-11-18 19:32:59,897 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 19:32:59,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:32:59,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a02336-b7a0-49e5-9b2b-9e9b19c78110/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:32:59,902 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a02336-b7a0-49e5-9b2b-9e9b19c78110/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:32:59,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a02336-b7a0-49e5-9b2b-9e9b19c78110/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 19:33:00,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:00,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-18 19:33:00,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:33:00,440 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 19:33:00,441 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:33:01,320 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 19:33:01,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711598818] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:33:01,321 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:33:01,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 34 [2022-11-18 19:33:01,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801828886] [2022-11-18 19:33:01,322 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:33:01,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-18 19:33:01,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:01,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-18 19:33:01,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=933, Unknown=0, NotChecked=0, Total=1122 [2022-11-18 19:33:01,326 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2022-11-18 19:33:01,329 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 329 transitions, 5357 flow. Second operand has 34 states, 34 states have (on average 56.38235294117647) internal successors, (1917), 34 states have internal predecessors, (1917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:01,329 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:33:01,329 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2022-11-18 19:33:01,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:33:03,649 INFO L130 PetriNetUnfolder]: 346/2488 cut-off events. [2022-11-18 19:33:03,650 INFO L131 PetriNetUnfolder]: For 241157/241645 co-relation queries the response was YES. [2022-11-18 19:33:03,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17426 conditions, 2488 events. 346/2488 cut-off events. For 241157/241645 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 19008 event pairs, 0 based on Foata normal form. 42/2266 useless extension candidates. Maximal degree in co-relation 17272. Up to 528 conditions per place. [2022-11-18 19:33:03,724 INFO L137 encePairwiseOnDemand]: 63/70 looper letters, 94 selfloop transitions, 298 changer transitions 26/463 dead transitions. [2022-11-18 19:33:03,724 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 463 transitions, 13439 flow [2022-11-18 19:33:03,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-11-18 19:33:03,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2022-11-18 19:33:03,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 3000 transitions. [2022-11-18 19:33:03,729 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8241758241758241 [2022-11-18 19:33:03,730 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 3000 transitions. [2022-11-18 19:33:03,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 3000 transitions. [2022-11-18 19:33:03,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:33:03,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 3000 transitions. [2022-11-18 19:33:03,737 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 57.69230769230769) internal successors, (3000), 52 states have internal predecessors, (3000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:03,742 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 70.0) internal successors, (3710), 53 states have internal predecessors, (3710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:03,743 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 70.0) internal successors, (3710), 53 states have internal predecessors, (3710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:03,744 INFO L175 Difference]: Start difference. First operand has 329 places, 329 transitions, 5357 flow. Second operand 52 states and 3000 transitions. [2022-11-18 19:33:03,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 463 transitions, 13439 flow [2022-11-18 19:33:04,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 463 transitions, 11873 flow, removed 704 selfloop flow, removed 30 redundant places. [2022-11-18 19:33:04,328 INFO L231 Difference]: Finished difference. Result has 363 places, 390 transitions, 7126 flow [2022-11-18 19:33:04,329 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=4619, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=245, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=7126, PETRI_PLACES=363, PETRI_TRANSITIONS=390} [2022-11-18 19:33:04,330 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, 293 predicate places. [2022-11-18 19:33:04,330 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 390 transitions, 7126 flow [2022-11-18 19:33:04,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 56.38235294117647) internal successors, (1917), 34 states have internal predecessors, (1917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:04,331 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:33:04,332 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 9, 9, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:33:04,340 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a02336-b7a0-49e5-9b2b-9e9b19c78110/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 19:33:04,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a02336-b7a0-49e5-9b2b-9e9b19c78110/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-18 19:33:04,536 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 19:33:04,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:04,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1659446404, now seen corresponding path program 8 times [2022-11-18 19:33:04,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:04,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159104116] [2022-11-18 19:33:04,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:04,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:04,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:05,207 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 19:33:05,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:05,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159104116] [2022-11-18 19:33:05,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159104116] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:33:05,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591726945] [2022-11-18 19:33:05,208 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:33:05,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:33:05,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a02336-b7a0-49e5-9b2b-9e9b19c78110/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:33:05,212 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a02336-b7a0-49e5-9b2b-9e9b19c78110/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:33:05,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a02336-b7a0-49e5-9b2b-9e9b19c78110/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 19:33:05,338 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:33:05,338 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:33:05,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-18 19:33:05,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:33:05,647 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 19:33:05,647 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:33:06,323 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 19:33:06,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [591726945] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:33:06,324 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:33:06,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 35 [2022-11-18 19:33:06,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117861130] [2022-11-18 19:33:06,324 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:33:06,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-18 19:33:06,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:06,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-18 19:33:06,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=997, Unknown=0, NotChecked=0, Total=1190 [2022-11-18 19:33:06,329 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2022-11-18 19:33:06,331 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 390 transitions, 7126 flow. Second operand has 35 states, 35 states have (on average 56.371428571428574) internal successors, (1973), 35 states have internal predecessors, (1973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:06,332 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:33:06,332 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2022-11-18 19:33:06,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:33:09,775 INFO L130 PetriNetUnfolder]: 414/2934 cut-off events. [2022-11-18 19:33:09,775 INFO L131 PetriNetUnfolder]: For 378475/378851 co-relation queries the response was YES. [2022-11-18 19:33:09,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22735 conditions, 2934 events. 414/2934 cut-off events. For 378475/378851 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 23625 event pairs, 0 based on Foata normal form. 53/2677 useless extension candidates. Maximal degree in co-relation 22567. Up to 624 conditions per place. [2022-11-18 19:33:09,862 INFO L137 encePairwiseOnDemand]: 63/70 looper letters, 82 selfloop transitions, 384 changer transitions 29/540 dead transitions. [2022-11-18 19:33:09,862 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 540 transitions, 17041 flow [2022-11-18 19:33:09,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-11-18 19:33:09,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2022-11-18 19:33:09,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 3465 transitions. [2022-11-18 19:33:09,868 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.825 [2022-11-18 19:33:09,869 INFO L72 ComplementDD]: Start complementDD. Operand 60 states and 3465 transitions. [2022-11-18 19:33:09,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 3465 transitions. [2022-11-18 19:33:09,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:33:09,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 60 states and 3465 transitions. [2022-11-18 19:33:09,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 61 states, 60 states have (on average 57.75) internal successors, (3465), 60 states have internal predecessors, (3465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:09,884 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 61 states, 61 states have (on average 70.0) internal successors, (4270), 61 states have internal predecessors, (4270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:09,886 INFO L81 ComplementDD]: Finished complementDD. Result has 61 states, 61 states have (on average 70.0) internal successors, (4270), 61 states have internal predecessors, (4270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:09,887 INFO L175 Difference]: Start difference. First operand has 363 places, 390 transitions, 7126 flow. Second operand 60 states and 3465 transitions. [2022-11-18 19:33:09,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 540 transitions, 17041 flow [2022-11-18 19:33:10,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 540 transitions, 14327 flow, removed 1201 selfloop flow, removed 34 redundant places. [2022-11-18 19:33:10,579 INFO L231 Difference]: Finished difference. Result has 404 places, 459 transitions, 8646 flow [2022-11-18 19:33:10,579 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=5778, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=322, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=60, PETRI_FLOW=8646, PETRI_PLACES=404, PETRI_TRANSITIONS=459} [2022-11-18 19:33:10,580 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, 334 predicate places. [2022-11-18 19:33:10,580 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 459 transitions, 8646 flow [2022-11-18 19:33:10,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 56.371428571428574) internal successors, (1973), 35 states have internal predecessors, (1973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:10,581 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:33:10,581 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:33:10,586 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a02336-b7a0-49e5-9b2b-9e9b19c78110/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 19:33:10,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a02336-b7a0-49e5-9b2b-9e9b19c78110/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-18 19:33:10,782 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 19:33:10,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:10,783 INFO L85 PathProgramCache]: Analyzing trace with hash 592571080, now seen corresponding path program 9 times [2022-11-18 19:33:10,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:10,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163032456] [2022-11-18 19:33:10,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:10,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:10,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:11,570 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 349 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 19:33:11,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:11,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163032456] [2022-11-18 19:33:11,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163032456] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:33:11,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109421337] [2022-11-18 19:33:11,571 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:33:11,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:33:11,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a02336-b7a0-49e5-9b2b-9e9b19c78110/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:33:11,573 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a02336-b7a0-49e5-9b2b-9e9b19c78110/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:33:11,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a02336-b7a0-49e5-9b2b-9e9b19c78110/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 19:33:11,700 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2022-11-18 19:33:11,701 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:33:11,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-18 19:33:11,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:33:11,935 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 349 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 19:33:11,935 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:33:12,337 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 349 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 19:33:12,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2109421337] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:33:12,338 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:33:12,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 27 [2022-11-18 19:33:12,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701787730] [2022-11-18 19:33:12,338 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:33:12,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-18 19:33:12,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:12,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-18 19:33:12,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=555, Unknown=0, NotChecked=0, Total=702 [2022-11-18 19:33:12,341 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 70 [2022-11-18 19:33:12,343 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 459 transitions, 8646 flow. Second operand has 27 states, 27 states have (on average 56.407407407407405) internal successors, (1523), 27 states have internal predecessors, (1523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:12,343 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:33:12,343 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 70 [2022-11-18 19:33:12,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:33:15,061 INFO L130 PetriNetUnfolder]: 423/2988 cut-off events. [2022-11-18 19:33:15,061 INFO L131 PetriNetUnfolder]: For 441259/441573 co-relation queries the response was YES. [2022-11-18 19:33:15,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24321 conditions, 2988 events. 423/2988 cut-off events. For 441259/441573 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 23991 event pairs, 0 based on Foata normal form. 54/2728 useless extension candidates. Maximal degree in co-relation 24136. Up to 638 conditions per place. [2022-11-18 19:33:15,155 INFO L137 encePairwiseOnDemand]: 63/70 looper letters, 89 selfloop transitions, 388 changer transitions 14/536 dead transitions. [2022-11-18 19:33:15,156 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 536 transitions, 16379 flow [2022-11-18 19:33:15,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-11-18 19:33:15,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2022-11-18 19:33:15,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 2942 transitions. [2022-11-18 19:33:15,165 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8240896358543417 [2022-11-18 19:33:15,165 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 2942 transitions. [2022-11-18 19:33:15,166 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 2942 transitions. [2022-11-18 19:33:15,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:33:15,168 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 2942 transitions. [2022-11-18 19:33:15,176 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 52 states, 51 states have (on average 57.68627450980392) internal successors, (2942), 51 states have internal predecessors, (2942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:15,182 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 52 states, 52 states have (on average 70.0) internal successors, (3640), 52 states have internal predecessors, (3640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:15,184 INFO L81 ComplementDD]: Finished complementDD. Result has 52 states, 52 states have (on average 70.0) internal successors, (3640), 52 states have internal predecessors, (3640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:15,185 INFO L175 Difference]: Start difference. First operand has 404 places, 459 transitions, 8646 flow. Second operand 51 states and 2942 transitions. [2022-11-18 19:33:15,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 536 transitions, 16379 flow [2022-11-18 19:33:16,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 536 transitions, 14015 flow, removed 975 selfloop flow, removed 40 redundant places. [2022-11-18 19:33:16,349 INFO L231 Difference]: Finished difference. Result has 416 places, 478 transitions, 8967 flow [2022-11-18 19:33:16,349 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=7122, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=459, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=370, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=8967, PETRI_PLACES=416, PETRI_TRANSITIONS=478} [2022-11-18 19:33:16,350 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, 346 predicate places. [2022-11-18 19:33:16,350 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 478 transitions, 8967 flow [2022-11-18 19:33:16,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 56.407407407407405) internal successors, (1523), 27 states have internal predecessors, (1523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:16,351 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:33:16,352 INFO L209 CegarLoopForPetriNet]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:33:16,360 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a02336-b7a0-49e5-9b2b-9e9b19c78110/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-18 19:33:16,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a02336-b7a0-49e5-9b2b-9e9b19c78110/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-18 19:33:16,558 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 19:33:16,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:16,559 INFO L85 PathProgramCache]: Analyzing trace with hash 596124818, now seen corresponding path program 10 times [2022-11-18 19:33:16,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:16,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583807518] [2022-11-18 19:33:16,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:16,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:16,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:17,139 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 386 proven. 53 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 19:33:17,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:17,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583807518] [2022-11-18 19:33:17,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583807518] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:33:17,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491308991] [2022-11-18 19:33:17,140 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 19:33:17,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:33:17,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a02336-b7a0-49e5-9b2b-9e9b19c78110/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:33:17,142 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a02336-b7a0-49e5-9b2b-9e9b19c78110/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:33:17,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a02336-b7a0-49e5-9b2b-9e9b19c78110/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 19:33:17,325 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 19:33:17,325 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:33:17,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-18 19:33:17,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:33:17,548 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 439 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 19:33:17,548 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:33:17,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491308991] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:33:17,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:33:17,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [23] total 25 [2022-11-18 19:33:17,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166666658] [2022-11-18 19:33:17,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:33:17,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 19:33:17,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:17,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 19:33:17,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=451, Unknown=0, NotChecked=0, Total=600 [2022-11-18 19:33:17,554 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 70 [2022-11-18 19:33:17,556 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 478 transitions, 8967 flow. Second operand has 23 states, 23 states have (on average 59.91304347826087) internal successors, (1378), 23 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:17,556 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:33:17,556 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 70 [2022-11-18 19:33:17,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:33:24,681 INFO L130 PetriNetUnfolder]: 2340/12790 cut-off events. [2022-11-18 19:33:24,681 INFO L131 PetriNetUnfolder]: For 1578409/1578599 co-relation queries the response was YES. [2022-11-18 19:33:25,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93355 conditions, 12790 events. 2340/12790 cut-off events. For 1578409/1578599 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 148637 event pairs, 554 based on Foata normal form. 41/11404 useless extension candidates. Maximal degree in co-relation 93203. Up to 2604 conditions per place. [2022-11-18 19:33:25,112 INFO L137 encePairwiseOnDemand]: 64/70 looper letters, 14 selfloop transitions, 41 changer transitions 339/531 dead transitions. [2022-11-18 19:33:25,112 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 531 transitions, 8638 flow [2022-11-18 19:33:25,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-18 19:33:25,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-18 19:33:25,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 2000 transitions. [2022-11-18 19:33:25,116 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8658008658008658 [2022-11-18 19:33:25,116 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 2000 transitions. [2022-11-18 19:33:25,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 2000 transitions. [2022-11-18 19:33:25,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:33:25,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 2000 transitions. [2022-11-18 19:33:25,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 60.60606060606061) internal successors, (2000), 33 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:25,125 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 70.0) internal successors, (2380), 34 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:25,126 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 70.0) internal successors, (2380), 34 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:25,126 INFO L175 Difference]: Start difference. First operand has 416 places, 478 transitions, 8967 flow. Second operand 33 states and 2000 transitions. [2022-11-18 19:33:25,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 531 transitions, 8638 flow [2022-11-18 19:33:29,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 531 transitions, 7808 flow, removed 278 selfloop flow, removed 34 redundant places. [2022-11-18 19:33:29,445 INFO L231 Difference]: Finished difference. Result has 405 places, 182 transitions, 1828 flow [2022-11-18 19:33:29,445 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=7422, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=449, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=1828, PETRI_PLACES=405, PETRI_TRANSITIONS=182} [2022-11-18 19:33:29,446 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, 335 predicate places. [2022-11-18 19:33:29,446 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 182 transitions, 1828 flow [2022-11-18 19:33:29,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 59.91304347826087) internal successors, (1378), 23 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:29,447 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:33:29,447 INFO L209 CegarLoopForPetriNet]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:33:29,532 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a02336-b7a0-49e5-9b2b-9e9b19c78110/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-11-18 19:33:29,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a02336-b7a0-49e5-9b2b-9e9b19c78110/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-18 19:33:29,653 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 19:33:29,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:29,654 INFO L85 PathProgramCache]: Analyzing trace with hash 665756159, now seen corresponding path program 11 times [2022-11-18 19:33:29,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:29,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898499704] [2022-11-18 19:33:29,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:29,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:29,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:30,245 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 384 proven. 55 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 19:33:30,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:30,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898499704] [2022-11-18 19:33:30,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898499704] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:33:30,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247248955] [2022-11-18 19:33:30,247 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 19:33:30,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:33:30,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a02336-b7a0-49e5-9b2b-9e9b19c78110/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:33:30,248 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a02336-b7a0-49e5-9b2b-9e9b19c78110/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:33:30,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a02336-b7a0-49e5-9b2b-9e9b19c78110/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-18 19:33:30,393 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2022-11-18 19:33:30,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:33:30,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-18 19:33:30,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:33:30,640 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 439 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 19:33:30,640 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:33:30,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1247248955] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:33:30,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:33:30,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [23] total 25 [2022-11-18 19:33:30,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374154212] [2022-11-18 19:33:30,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:33:30,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 19:33:30,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:30,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 19:33:30,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=451, Unknown=0, NotChecked=0, Total=600 [2022-11-18 19:33:30,646 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 70 [2022-11-18 19:33:30,648 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 182 transitions, 1828 flow. Second operand has 23 states, 23 states have (on average 59.91304347826087) internal successors, (1378), 23 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:30,648 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:33:30,648 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 70 [2022-11-18 19:33:30,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:33:35,654 INFO L130 PetriNetUnfolder]: 3131/11785 cut-off events. [2022-11-18 19:33:35,654 INFO L131 PetriNetUnfolder]: For 1149052/1149339 co-relation queries the response was YES. [2022-11-18 19:33:35,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88695 conditions, 11785 events. 3131/11785 cut-off events. For 1149052/1149339 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 128950 event pairs, 680 based on Foata normal form. 35/10653 useless extension candidates. Maximal degree in co-relation 88553. Up to 2416 conditions per place. [2022-11-18 19:33:35,972 INFO L137 encePairwiseOnDemand]: 64/70 looper letters, 0 selfloop transitions, 0 changer transitions 221/221 dead transitions. [2022-11-18 19:33:35,972 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 221 transitions, 1864 flow [2022-11-18 19:33:35,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-18 19:33:35,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-18 19:33:35,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1969 transitions. [2022-11-18 19:33:35,982 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8523809523809524 [2022-11-18 19:33:35,983 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1969 transitions. [2022-11-18 19:33:35,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1969 transitions. [2022-11-18 19:33:35,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:33:35,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1969 transitions. [2022-11-18 19:33:35,995 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 59.666666666666664) internal successors, (1969), 33 states have internal predecessors, (1969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:36,003 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 70.0) internal successors, (2380), 34 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:36,004 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 70.0) internal successors, (2380), 34 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:36,004 INFO L175 Difference]: Start difference. First operand has 405 places, 182 transitions, 1828 flow. Second operand 33 states and 1969 transitions. [2022-11-18 19:33:36,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 221 transitions, 1864 flow [2022-11-18 19:33:38,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 221 transitions, 1417 flow, removed 100 selfloop flow, removed 77 redundant places. [2022-11-18 19:33:38,601 INFO L231 Difference]: Finished difference. Result has 287 places, 0 transitions, 0 flow [2022-11-18 19:33:38,601 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1217, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=0, PETRI_PLACES=287, PETRI_TRANSITIONS=0} [2022-11-18 19:33:38,602 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, 217 predicate places. [2022-11-18 19:33:38,602 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 0 transitions, 0 flow [2022-11-18 19:33:38,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 59.91304347826087) internal successors, (1378), 23 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:38,607 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-11-18 19:33:38,608 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-11-18 19:33:38,608 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-11-18 19:33:38,616 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a02336-b7a0-49e5-9b2b-9e9b19c78110/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-18 19:33:38,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a02336-b7a0-49e5-9b2b-9e9b19c78110/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:33:38,815 INFO L444 BasicCegarLoop]: Path program histogram: [11, 3, 2, 1, 1, 1] [2022-11-18 19:33:38,819 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-18 19:33:38,819 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-18 19:33:38,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 07:33:38 BasicIcfg [2022-11-18 19:33:38,831 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-18 19:33:38,832 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-18 19:33:38,832 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-18 19:33:38,833 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-18 19:33:38,833 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:32:33" (3/4) ... [2022-11-18 19:33:38,836 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-18 19:33:38,845 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t1 [2022-11-18 19:33:38,846 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t2 [2022-11-18 19:33:38,853 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2022-11-18 19:33:38,853 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-18 19:33:38,853 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-18 19:33:38,854 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-18 19:33:38,899 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a02336-b7a0-49e5-9b2b-9e9b19c78110/bin/uautomizer-TMbwUNV5ro/witness.graphml [2022-11-18 19:33:38,899 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-18 19:33:38,900 INFO L158 Benchmark]: Toolchain (without parser) took 66711.17ms. Allocated memory was 125.8MB in the beginning and 9.5GB in the end (delta: 9.4GB). Free memory was 84.1MB in the beginning and 8.1GB in the end (delta: -8.0GB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. [2022-11-18 19:33:38,900 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 125.8MB. Free memory is still 102.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 19:33:38,901 INFO L158 Benchmark]: CACSL2BoogieTranslator took 583.75ms. Allocated memory is still 125.8MB. Free memory was 83.8MB in the beginning and 90.2MB in the end (delta: -6.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-18 19:33:38,904 INFO L158 Benchmark]: Boogie Procedure Inliner took 70.23ms. Allocated memory is still 125.8MB. Free memory was 90.2MB in the beginning and 88.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 19:33:38,905 INFO L158 Benchmark]: Boogie Preprocessor took 67.22ms. Allocated memory is still 125.8MB. Free memory was 88.2MB in the beginning and 86.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 19:33:38,905 INFO L158 Benchmark]: RCFGBuilder took 601.42ms. Allocated memory is still 125.8MB. Free memory was 86.9MB in the beginning and 74.4MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-18 19:33:38,906 INFO L158 Benchmark]: TraceAbstraction took 65313.76ms. Allocated memory was 125.8MB in the beginning and 9.5GB in the end (delta: 9.4GB). Free memory was 73.5MB in the beginning and 8.1GB in the end (delta: -8.0GB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. [2022-11-18 19:33:38,906 INFO L158 Benchmark]: Witness Printer took 66.94ms. Allocated memory is still 9.5GB. Free memory was 8.1GB in the beginning and 8.1GB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 19:33:38,909 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 125.8MB. Free memory is still 102.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 583.75ms. Allocated memory is still 125.8MB. Free memory was 83.8MB in the beginning and 90.2MB in the end (delta: -6.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 70.23ms. Allocated memory is still 125.8MB. Free memory was 90.2MB in the beginning and 88.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 67.22ms. Allocated memory is still 125.8MB. Free memory was 88.2MB in the beginning and 86.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 601.42ms. Allocated memory is still 125.8MB. Free memory was 86.9MB in the beginning and 74.4MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 65313.76ms. Allocated memory was 125.8MB in the beginning and 9.5GB in the end (delta: 9.4GB). Free memory was 73.5MB in the beginning and 8.1GB in the end (delta: -8.0GB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. * Witness Printer took 66.94ms. Allocated memory is still 9.5GB. Free memory was 8.1GB in the beginning and 8.1GB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 722]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 88 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 65.1s, OverallIterations: 19, TraceHistogramMax: 11, PathProgramHistogramMax: 11, EmptinessCheckTime: 0.0s, AutomataDifference: 43.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2022 SdHoareTripleChecker+Valid, 2.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2022 mSDsluCounter, 350 SdHoareTripleChecker+Invalid, 2.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 250 mSDsCounter, 500 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2978 IncrementalHoareTripleChecker+Invalid, 3478 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 500 mSolverCounterUnsat, 100 mSDtfsCounter, 2978 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2817 GetRequests, 2030 SyntacticMatches, 64 SemanticMatches, 723 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11368 ImplicationChecksByTransitivity, 14.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8967occurred in iteration=17, InterpolantAutomatonStates: 544, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 16.8s InterpolantComputationTime, 2703 NumberOfCodeBlocks, 2694 NumberOfCodeBlocksAsserted, 75 NumberOfCheckSat, 3597 ConstructedInterpolants, 0 QuantifiedInterpolants, 14135 SizeOfPredicates, 163 NumberOfNonLiveVariables, 2630 ConjunctsInSsa, 217 ConjunctsInUnsatCore, 41 InterpolantComputations, 9 PerfectInterpolantSequences, 1784/7028 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-18 19:33:38,945 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77a02336-b7a0-49e5-9b2b-9e9b19c78110/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE