./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-more-min-array-hom.wvr.c --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_a8d5fd0b-e903-4913-bfe7-7d7e55306e44/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d5fd0b-e903-4913-bfe7-7d7e55306e44/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_a8d5fd0b-e903-4913-bfe7-7d7e55306e44/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d5fd0b-e903-4913-bfe7-7d7e55306e44/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-min-array-hom.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d5fd0b-e903-4913-bfe7-7d7e55306e44/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_a8d5fd0b-e903-4913-bfe7-7d7e55306e44/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 ceb4cfb737a49cea9ea1be451c16ebb29f48ae611a8c94fc546ca2e3471f0eb3 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 18:30:01,964 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 18:30:01,966 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 18:30:01,998 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 18:30:01,999 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 18:30:02,000 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 18:30:02,001 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 18:30:02,004 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 18:30:02,005 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 18:30:02,010 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 18:30:02,012 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 18:30:02,018 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 18:30:02,019 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 18:30:02,024 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 18:30:02,026 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 18:30:02,030 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 18:30:02,032 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 18:30:02,034 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 18:30:02,036 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 18:30:02,040 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 18:30:02,044 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 18:30:02,046 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 18:30:02,049 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 18:30:02,050 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 18:30:02,057 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 18:30:02,061 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 18:30:02,061 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 18:30:02,062 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 18:30:02,063 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 18:30:02,064 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 18:30:02,064 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 18:30:02,065 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 18:30:02,066 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 18:30:02,067 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 18:30:02,068 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 18:30:02,069 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 18:30:02,069 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 18:30:02,070 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 18:30:02,070 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 18:30:02,071 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 18:30:02,072 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 18:30:02,073 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d5fd0b-e903-4913-bfe7-7d7e55306e44/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 18:30:02,098 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 18:30:02,098 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 18:30:02,099 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 18:30:02,099 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 18:30:02,100 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 18:30:02,100 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 18:30:02,101 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 18:30:02,102 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 18:30:02,102 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 18:30:02,102 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 18:30:02,103 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 18:30:02,103 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 18:30:02,103 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 18:30:02,104 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 18:30:02,104 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 18:30:02,104 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 18:30:02,104 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 18:30:02,105 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 18:30:02,105 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 18:30:02,105 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 18:30:02,106 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 18:30:02,106 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 18:30:02,106 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 18:30:02,107 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 18:30:02,107 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:30:02,107 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 18:30:02,108 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 18:30:02,108 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 18:30:02,108 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 18:30:02,108 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 18:30:02,109 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 18:30:02,109 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 18:30:02,109 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 18:30:02,110 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_a8d5fd0b-e903-4913-bfe7-7d7e55306e44/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d5fd0b-e903-4913-bfe7-7d7e55306e44/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ceb4cfb737a49cea9ea1be451c16ebb29f48ae611a8c94fc546ca2e3471f0eb3 [2022-11-18 18:30:02,427 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 18:30:02,463 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 18:30:02,468 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 18:30:02,469 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 18:30:02,471 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 18:30:02,472 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d5fd0b-e903-4913-bfe7-7d7e55306e44/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/popl20-more-min-array-hom.wvr.c [2022-11-18 18:30:02,552 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d5fd0b-e903-4913-bfe7-7d7e55306e44/bin/uautomizer-TMbwUNV5ro/data/2506c6ff5/20677e02d36748e0811a3c1aebaa9386/FLAG3ae2354d5 [2022-11-18 18:30:03,127 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 18:30:03,128 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d5fd0b-e903-4913-bfe7-7d7e55306e44/sv-benchmarks/c/weaver/popl20-more-min-array-hom.wvr.c [2022-11-18 18:30:03,137 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d5fd0b-e903-4913-bfe7-7d7e55306e44/bin/uautomizer-TMbwUNV5ro/data/2506c6ff5/20677e02d36748e0811a3c1aebaa9386/FLAG3ae2354d5 [2022-11-18 18:30:03,468 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d5fd0b-e903-4913-bfe7-7d7e55306e44/bin/uautomizer-TMbwUNV5ro/data/2506c6ff5/20677e02d36748e0811a3c1aebaa9386 [2022-11-18 18:30:03,470 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 18:30:03,472 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 18:30:03,474 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 18:30:03,474 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 18:30:03,478 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 18:30:03,479 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:30:03" (1/1) ... [2022-11-18 18:30:03,480 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e0c9b39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:30:03, skipping insertion in model container [2022-11-18 18:30:03,480 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:30:03" (1/1) ... [2022-11-18 18:30:03,488 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 18:30:03,513 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:30:03,741 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_a8d5fd0b-e903-4913-bfe7-7d7e55306e44/sv-benchmarks/c/weaver/popl20-more-min-array-hom.wvr.c[2586,2599] [2022-11-18 18:30:03,759 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:30:03,776 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 18:30:03,817 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_a8d5fd0b-e903-4913-bfe7-7d7e55306e44/sv-benchmarks/c/weaver/popl20-more-min-array-hom.wvr.c[2586,2599] [2022-11-18 18:30:03,820 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:30:03,838 INFO L208 MainTranslator]: Completed translation [2022-11-18 18:30:03,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:30:03 WrapperNode [2022-11-18 18:30:03,840 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 18:30:03,841 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 18:30:03,841 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 18:30:03,841 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 18:30:03,850 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:30:03" (1/1) ... [2022-11-18 18:30:03,869 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:30:03" (1/1) ... [2022-11-18 18:30:03,892 INFO L138 Inliner]: procedures = 24, calls = 43, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 102 [2022-11-18 18:30:03,892 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 18:30:03,893 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 18:30:03,893 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 18:30:03,893 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 18:30:03,903 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:30:03" (1/1) ... [2022-11-18 18:30:03,903 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:30:03" (1/1) ... [2022-11-18 18:30:03,908 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:30:03" (1/1) ... [2022-11-18 18:30:03,908 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:30:03" (1/1) ... [2022-11-18 18:30:03,915 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:30:03" (1/1) ... [2022-11-18 18:30:03,919 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:30:03" (1/1) ... [2022-11-18 18:30:03,921 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:30:03" (1/1) ... [2022-11-18 18:30:03,922 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:30:03" (1/1) ... [2022-11-18 18:30:03,925 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 18:30:03,926 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 18:30:03,926 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 18:30:03,926 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 18:30:03,927 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:30:03" (1/1) ... [2022-11-18 18:30:03,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:30:03,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d5fd0b-e903-4913-bfe7-7d7e55306e44/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:30:03,974 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d5fd0b-e903-4913-bfe7-7d7e55306e44/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 18:30:03,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d5fd0b-e903-4913-bfe7-7d7e55306e44/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 18:30:04,024 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 18:30:04,024 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 18:30:04,024 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 18:30:04,024 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 18:30:04,025 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 18:30:04,025 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-18 18:30:04,026 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-18 18:30:04,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 18:30:04,028 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 18:30:04,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 18:30:04,029 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-18 18:30:04,029 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-18 18:30:04,029 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 18:30:04,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 18:30:04,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 18:30:04,031 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 18:30:04,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 18:30:04,033 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 18:30:04,199 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 18:30:04,201 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 18:30:04,602 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 18:30:04,705 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 18:30:04,706 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-18 18:30:04,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:30:04 BoogieIcfgContainer [2022-11-18 18:30:04,715 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 18:30:04,717 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 18:30:04,717 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 18:30:04,724 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 18:30:04,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:30:03" (1/3) ... [2022-11-18 18:30:04,725 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11924692 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:30:04, skipping insertion in model container [2022-11-18 18:30:04,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:30:03" (2/3) ... [2022-11-18 18:30:04,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11924692 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:30:04, skipping insertion in model container [2022-11-18 18:30:04,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:30:04" (3/3) ... [2022-11-18 18:30:04,728 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-min-array-hom.wvr.c [2022-11-18 18:30:04,741 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 18:30:04,755 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 18:30:04,755 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 18:30:04,755 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 18:30:04,861 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-18 18:30:04,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 152 places, 154 transitions, 332 flow [2022-11-18 18:30:04,999 INFO L130 PetriNetUnfolder]: 12/151 cut-off events. [2022-11-18 18:30:05,000 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-18 18:30:05,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164 conditions, 151 events. 12/151 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 92 event pairs, 0 based on Foata normal form. 0/138 useless extension candidates. Maximal degree in co-relation 113. Up to 2 conditions per place. [2022-11-18 18:30:05,006 INFO L82 GeneralOperation]: Start removeDead. Operand has 152 places, 154 transitions, 332 flow [2022-11-18 18:30:05,012 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 138 places, 140 transitions, 298 flow [2022-11-18 18:30:05,022 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:30:05,029 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;@361e2a36, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:30:05,029 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-18 18:30:05,080 INFO L130 PetriNetUnfolder]: 12/139 cut-off events. [2022-11-18 18:30:05,080 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-18 18:30:05,081 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:30:05,082 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:30:05,082 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 18:30:05,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:30:05,090 INFO L85 PathProgramCache]: Analyzing trace with hash 405465620, now seen corresponding path program 1 times [2022-11-18 18:30:05,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:30:05,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803683639] [2022-11-18 18:30:05,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:30:05,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:30:05,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:30:05,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:30:05,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:30:05,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803683639] [2022-11-18 18:30:05,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803683639] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:30:05,385 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:30:05,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:30:05,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786966833] [2022-11-18 18:30:05,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:30:05,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 18:30:05,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:30:05,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 18:30:05,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 18:30:05,450 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 154 [2022-11-18 18:30:05,455 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 140 transitions, 298 flow. Second operand has 2 states, 2 states have (on average 141.0) internal successors, (282), 2 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:05,456 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:30:05,456 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 154 [2022-11-18 18:30:05,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:30:05,586 INFO L130 PetriNetUnfolder]: 41/265 cut-off events. [2022-11-18 18:30:05,586 INFO L131 PetriNetUnfolder]: For 49/50 co-relation queries the response was YES. [2022-11-18 18:30:05,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 356 conditions, 265 events. 41/265 cut-off events. For 49/50 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 715 event pairs, 15 based on Foata normal form. 42/276 useless extension candidates. Maximal degree in co-relation 216. Up to 59 conditions per place. [2022-11-18 18:30:05,598 INFO L137 encePairwiseOnDemand]: 146/154 looper letters, 9 selfloop transitions, 0 changer transitions 4/132 dead transitions. [2022-11-18 18:30:05,598 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 132 transitions, 300 flow [2022-11-18 18:30:05,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 18:30:05,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-18 18:30:05,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 289 transitions. [2022-11-18 18:30:05,625 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9383116883116883 [2022-11-18 18:30:05,626 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 289 transitions. [2022-11-18 18:30:05,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 289 transitions. [2022-11-18 18:30:05,631 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:30:05,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 289 transitions. [2022-11-18 18:30:05,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 144.5) internal successors, (289), 2 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:05,653 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:05,654 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:05,656 INFO L175 Difference]: Start difference. First operand has 138 places, 140 transitions, 298 flow. Second operand 2 states and 289 transitions. [2022-11-18 18:30:05,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 132 transitions, 300 flow [2022-11-18 18:30:05,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 132 transitions, 288 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-18 18:30:05,673 INFO L231 Difference]: Finished difference. Result has 133 places, 128 transitions, 262 flow [2022-11-18 18:30:05,675 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=262, PETRI_PLACES=133, PETRI_TRANSITIONS=128} [2022-11-18 18:30:05,684 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, -5 predicate places. [2022-11-18 18:30:05,685 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 128 transitions, 262 flow [2022-11-18 18:30:05,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 141.0) internal successors, (282), 2 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:05,686 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:30:05,687 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:30:05,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 18:30:05,688 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 18:30:05,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:30:05,689 INFO L85 PathProgramCache]: Analyzing trace with hash 2142861004, now seen corresponding path program 1 times [2022-11-18 18:30:05,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:30:05,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914901672] [2022-11-18 18:30:05,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:30:05,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:30:05,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:30:06,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:30:06,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:30:06,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914901672] [2022-11-18 18:30:06,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914901672] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:30:06,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:30:06,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 18:30:06,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277825182] [2022-11-18 18:30:06,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:30:06,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 18:30:06,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:30:06,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 18:30:06,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:30:06,601 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 154 [2022-11-18 18:30:06,602 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 128 transitions, 262 flow. Second operand has 8 states, 8 states have (on average 99.5) internal successors, (796), 8 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:06,603 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:30:06,603 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 154 [2022-11-18 18:30:06,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:30:06,974 INFO L130 PetriNetUnfolder]: 295/679 cut-off events. [2022-11-18 18:30:06,974 INFO L131 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2022-11-18 18:30:06,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1138 conditions, 679 events. 295/679 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2975 event pairs, 167 based on Foata normal form. 1/511 useless extension candidates. Maximal degree in co-relation 1135. Up to 421 conditions per place. [2022-11-18 18:30:06,981 INFO L137 encePairwiseOnDemand]: 144/154 looper letters, 44 selfloop transitions, 6 changer transitions 4/136 dead transitions. [2022-11-18 18:30:06,981 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 136 transitions, 386 flow [2022-11-18 18:30:06,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 18:30:06,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 18:30:06,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 815 transitions. [2022-11-18 18:30:06,985 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.661525974025974 [2022-11-18 18:30:06,985 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 815 transitions. [2022-11-18 18:30:06,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 815 transitions. [2022-11-18 18:30:06,986 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:30:06,986 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 815 transitions. [2022-11-18 18:30:06,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 101.875) internal successors, (815), 8 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:06,998 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 154.0) internal successors, (1386), 9 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:07,000 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 154.0) internal successors, (1386), 9 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:07,000 INFO L175 Difference]: Start difference. First operand has 133 places, 128 transitions, 262 flow. Second operand 8 states and 815 transitions. [2022-11-18 18:30:07,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 136 transitions, 386 flow [2022-11-18 18:30:07,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 136 transitions, 386 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 18:30:07,009 INFO L231 Difference]: Finished difference. Result has 140 places, 129 transitions, 290 flow [2022-11-18 18:30:07,010 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=290, PETRI_PLACES=140, PETRI_TRANSITIONS=129} [2022-11-18 18:30:07,011 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 2 predicate places. [2022-11-18 18:30:07,012 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 129 transitions, 290 flow [2022-11-18 18:30:07,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 99.5) internal successors, (796), 8 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:07,013 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:30:07,014 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:30:07,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 18:30:07,015 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 18:30:07,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:30:07,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1947980679, now seen corresponding path program 1 times [2022-11-18 18:30:07,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:30:07,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384876563] [2022-11-18 18:30:07,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:30:07,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:30:07,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:30:07,279 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:30:07,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:30:07,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384876563] [2022-11-18 18:30:07,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384876563] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:30:07,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970348563] [2022-11-18 18:30:07,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:30:07,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:30:07,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d5fd0b-e903-4913-bfe7-7d7e55306e44/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:30:07,287 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d5fd0b-e903-4913-bfe7-7d7e55306e44/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:30:07,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d5fd0b-e903-4913-bfe7-7d7e55306e44/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 18:30:07,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:30:07,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 18:30:07,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:30:07,675 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:30:07,675 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:30:07,962 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:30:07,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1970348563] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-18 18:30:07,962 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:30:07,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 14 [2022-11-18 18:30:07,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839502074] [2022-11-18 18:30:07,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:30:07,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 18:30:07,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:30:07,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 18:30:07,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-11-18 18:30:07,971 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 154 [2022-11-18 18:30:07,972 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 129 transitions, 290 flow. Second operand has 7 states, 7 states have (on average 117.42857142857143) internal successors, (822), 7 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:07,972 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:30:07,973 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 154 [2022-11-18 18:30:07,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:30:08,216 INFO L130 PetriNetUnfolder]: 175/511 cut-off events. [2022-11-18 18:30:08,216 INFO L131 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2022-11-18 18:30:08,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 835 conditions, 511 events. 175/511 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2090 event pairs, 45 based on Foata normal form. 0/426 useless extension candidates. Maximal degree in co-relation 827. Up to 137 conditions per place. [2022-11-18 18:30:08,223 INFO L137 encePairwiseOnDemand]: 146/154 looper letters, 33 selfloop transitions, 7 changer transitions 0/137 dead transitions. [2022-11-18 18:30:08,223 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 137 transitions, 388 flow [2022-11-18 18:30:08,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 18:30:08,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 18:30:08,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 838 transitions. [2022-11-18 18:30:08,226 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7773654916512059 [2022-11-18 18:30:08,226 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 838 transitions. [2022-11-18 18:30:08,226 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 838 transitions. [2022-11-18 18:30:08,227 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:30:08,227 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 838 transitions. [2022-11-18 18:30:08,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 119.71428571428571) internal successors, (838), 7 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:08,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 154.0) internal successors, (1232), 8 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:08,232 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 154.0) internal successors, (1232), 8 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:08,233 INFO L175 Difference]: Start difference. First operand has 140 places, 129 transitions, 290 flow. Second operand 7 states and 838 transitions. [2022-11-18 18:30:08,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 137 transitions, 388 flow [2022-11-18 18:30:08,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 137 transitions, 370 flow, removed 3 selfloop flow, removed 7 redundant places. [2022-11-18 18:30:08,238 INFO L231 Difference]: Finished difference. Result has 140 places, 131 transitions, 305 flow [2022-11-18 18:30:08,238 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=305, PETRI_PLACES=140, PETRI_TRANSITIONS=131} [2022-11-18 18:30:08,241 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 2 predicate places. [2022-11-18 18:30:08,241 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 131 transitions, 305 flow [2022-11-18 18:30:08,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 117.42857142857143) internal successors, (822), 7 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:08,242 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:30:08,242 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:30:08,254 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d5fd0b-e903-4913-bfe7-7d7e55306e44/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 18:30:08,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d5fd0b-e903-4913-bfe7-7d7e55306e44/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:30:08,449 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 18:30:08,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:30:08,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1971120592, now seen corresponding path program 1 times [2022-11-18 18:30:08,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:30:08,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477993265] [2022-11-18 18:30:08,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:30:08,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:30:08,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:30:08,817 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:30:08,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:30:08,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477993265] [2022-11-18 18:30:08,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477993265] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:30:08,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696428586] [2022-11-18 18:30:08,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:30:08,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:30:08,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d5fd0b-e903-4913-bfe7-7d7e55306e44/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:30:08,822 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d5fd0b-e903-4913-bfe7-7d7e55306e44/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:30:08,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d5fd0b-e903-4913-bfe7-7d7e55306e44/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 18:30:08,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:30:08,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 18:30:08,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:30:09,178 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:30:09,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:30:09,467 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:30:09,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1696428586] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-18 18:30:09,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:30:09,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 18 [2022-11-18 18:30:09,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383931260] [2022-11-18 18:30:09,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:30:09,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 18:30:09,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:30:09,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 18:30:09,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2022-11-18 18:30:09,472 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 154 [2022-11-18 18:30:09,473 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 131 transitions, 305 flow. Second operand has 9 states, 9 states have (on average 110.33333333333333) internal successors, (993), 9 states have internal predecessors, (993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:09,473 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:30:09,474 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 154 [2022-11-18 18:30:09,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:30:09,914 INFO L130 PetriNetUnfolder]: 600/1204 cut-off events. [2022-11-18 18:30:09,914 INFO L131 PetriNetUnfolder]: For 404/584 co-relation queries the response was YES. [2022-11-18 18:30:09,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2461 conditions, 1204 events. 600/1204 cut-off events. For 404/584 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 6302 event pairs, 103 based on Foata normal form. 180/1238 useless extension candidates. Maximal degree in co-relation 2453. Up to 249 conditions per place. [2022-11-18 18:30:09,956 INFO L137 encePairwiseOnDemand]: 142/154 looper letters, 74 selfloop transitions, 19 changer transitions 0/183 dead transitions. [2022-11-18 18:30:09,956 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 183 transitions, 644 flow [2022-11-18 18:30:09,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 18:30:09,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 18:30:09,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1264 transitions. [2022-11-18 18:30:09,961 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7461629279811098 [2022-11-18 18:30:09,961 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1264 transitions. [2022-11-18 18:30:09,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1264 transitions. [2022-11-18 18:30:09,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:30:09,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1264 transitions. [2022-11-18 18:30:09,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 114.9090909090909) internal successors, (1264), 11 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:09,971 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 154.0) internal successors, (1848), 12 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:09,975 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 154.0) internal successors, (1848), 12 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:09,975 INFO L175 Difference]: Start difference. First operand has 140 places, 131 transitions, 305 flow. Second operand 11 states and 1264 transitions. [2022-11-18 18:30:09,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 183 transitions, 644 flow [2022-11-18 18:30:09,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 183 transitions, 631 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 18:30:09,986 INFO L231 Difference]: Finished difference. Result has 152 places, 143 transitions, 404 flow [2022-11-18 18:30:09,986 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=404, PETRI_PLACES=152, PETRI_TRANSITIONS=143} [2022-11-18 18:30:09,988 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 14 predicate places. [2022-11-18 18:30:09,988 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 143 transitions, 404 flow [2022-11-18 18:30:09,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 110.33333333333333) internal successors, (993), 9 states have internal predecessors, (993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:09,989 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:30:09,990 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:30:10,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d5fd0b-e903-4913-bfe7-7d7e55306e44/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 18:30:10,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d5fd0b-e903-4913-bfe7-7d7e55306e44/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:30:10,197 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 18:30:10,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:30:10,197 INFO L85 PathProgramCache]: Analyzing trace with hash 797684560, now seen corresponding path program 2 times [2022-11-18 18:30:10,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:30:10,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831989500] [2022-11-18 18:30:10,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:30:10,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:30:10,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:30:10,473 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:30:10,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:30:10,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831989500] [2022-11-18 18:30:10,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831989500] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:30:10,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [344635241] [2022-11-18 18:30:10,475 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:30:10,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:30:10,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d5fd0b-e903-4913-bfe7-7d7e55306e44/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:30:10,476 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d5fd0b-e903-4913-bfe7-7d7e55306e44/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:30:10,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d5fd0b-e903-4913-bfe7-7d7e55306e44/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 18:30:10,594 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:30:10,594 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:30:10,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 18:30:10,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:30:10,903 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:30:10,903 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:30:10,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [344635241] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:30:10,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:30:10,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2022-11-18 18:30:10,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547565892] [2022-11-18 18:30:10,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:30:10,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:30:10,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:30:10,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:30:10,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-11-18 18:30:10,908 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 154 [2022-11-18 18:30:10,909 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 143 transitions, 404 flow. Second operand has 6 states, 6 states have (on average 107.5) internal successors, (645), 6 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:10,909 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:30:10,909 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 154 [2022-11-18 18:30:10,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:30:11,296 INFO L130 PetriNetUnfolder]: 412/876 cut-off events. [2022-11-18 18:30:11,296 INFO L131 PetriNetUnfolder]: For 824/929 co-relation queries the response was YES. [2022-11-18 18:30:11,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2204 conditions, 876 events. 412/876 cut-off events. For 824/929 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3967 event pairs, 118 based on Foata normal form. 131/985 useless extension candidates. Maximal degree in co-relation 2190. Up to 334 conditions per place. [2022-11-18 18:30:11,304 INFO L137 encePairwiseOnDemand]: 145/154 looper letters, 42 selfloop transitions, 11 changer transitions 0/145 dead transitions. [2022-11-18 18:30:11,304 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 145 transitions, 503 flow [2022-11-18 18:30:11,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 18:30:11,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 18:30:11,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 865 transitions. [2022-11-18 18:30:11,307 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7021103896103896 [2022-11-18 18:30:11,307 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 865 transitions. [2022-11-18 18:30:11,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 865 transitions. [2022-11-18 18:30:11,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:30:11,308 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 865 transitions. [2022-11-18 18:30:11,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 108.125) internal successors, (865), 8 states have internal predecessors, (865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:11,312 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 154.0) internal successors, (1386), 9 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:11,313 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 154.0) internal successors, (1386), 9 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:11,313 INFO L175 Difference]: Start difference. First operand has 152 places, 143 transitions, 404 flow. Second operand 8 states and 865 transitions. [2022-11-18 18:30:11,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 145 transitions, 503 flow [2022-11-18 18:30:11,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 145 transitions, 490 flow, removed 3 selfloop flow, removed 6 redundant places. [2022-11-18 18:30:11,319 INFO L231 Difference]: Finished difference. Result has 151 places, 137 transitions, 381 flow [2022-11-18 18:30:11,320 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=381, PETRI_PLACES=151, PETRI_TRANSITIONS=137} [2022-11-18 18:30:11,321 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 13 predicate places. [2022-11-18 18:30:11,321 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 137 transitions, 381 flow [2022-11-18 18:30:11,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 107.5) internal successors, (645), 6 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:11,321 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:30:11,322 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:30:11,333 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d5fd0b-e903-4913-bfe7-7d7e55306e44/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 18:30:11,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d5fd0b-e903-4913-bfe7-7d7e55306e44/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:30:11,528 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 18:30:11,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:30:11,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1636578117, now seen corresponding path program 1 times [2022-11-18 18:30:11,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:30:11,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938061154] [2022-11-18 18:30:11,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:30:11,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:30:11,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:30:13,411 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:30:13,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:30:13,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938061154] [2022-11-18 18:30:13,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938061154] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:30:13,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597884439] [2022-11-18 18:30:13,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:30:13,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:30:13,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d5fd0b-e903-4913-bfe7-7d7e55306e44/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:30:13,415 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d5fd0b-e903-4913-bfe7-7d7e55306e44/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:30:13,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d5fd0b-e903-4913-bfe7-7d7e55306e44/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 18:30:13,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:30:13,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-18 18:30:13,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:30:15,066 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:30:15,067 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 43 [2022-11-18 18:30:15,888 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:30:15,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:30:17,300 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:30:17,301 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 161 treesize of output 161 [2022-11-18 18:30:23,330 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:30:23,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1597884439] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:30:23,331 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:30:23,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 20, 19] total 50 [2022-11-18 18:30:23,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863396716] [2022-11-18 18:30:23,332 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:30:23,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-11-18 18:30:23,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:30:23,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-11-18 18:30:23,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=390, Invalid=2060, Unknown=0, NotChecked=0, Total=2450 [2022-11-18 18:30:23,339 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 154 [2022-11-18 18:30:23,343 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 137 transitions, 381 flow. Second operand has 50 states, 50 states have (on average 69.76) internal successors, (3488), 50 states have internal predecessors, (3488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:23,343 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:30:23,344 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 154 [2022-11-18 18:30:23,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:30:29,407 INFO L130 PetriNetUnfolder]: 4843/7968 cut-off events. [2022-11-18 18:30:29,408 INFO L131 PetriNetUnfolder]: For 6581/6581 co-relation queries the response was YES. [2022-11-18 18:30:29,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20310 conditions, 7968 events. 4843/7968 cut-off events. For 6581/6581 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 52666 event pairs, 450 based on Foata normal form. 1/7880 useless extension candidates. Maximal degree in co-relation 20298. Up to 2919 conditions per place. [2022-11-18 18:30:29,470 INFO L137 encePairwiseOnDemand]: 121/154 looper letters, 314 selfloop transitions, 108 changer transitions 9/484 dead transitions. [2022-11-18 18:30:29,470 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 484 transitions, 2430 flow [2022-11-18 18:30:29,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-18 18:30:29,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-11-18 18:30:29,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 3313 transitions. [2022-11-18 18:30:29,479 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4889315230224321 [2022-11-18 18:30:29,479 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 3313 transitions. [2022-11-18 18:30:29,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 3313 transitions. [2022-11-18 18:30:29,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:30:29,482 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 3313 transitions. [2022-11-18 18:30:29,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 75.29545454545455) internal successors, (3313), 44 states have internal predecessors, (3313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:29,500 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 154.0) internal successors, (6930), 45 states have internal predecessors, (6930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:29,503 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 154.0) internal successors, (6930), 45 states have internal predecessors, (6930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:29,504 INFO L175 Difference]: Start difference. First operand has 151 places, 137 transitions, 381 flow. Second operand 44 states and 3313 transitions. [2022-11-18 18:30:29,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 484 transitions, 2430 flow [2022-11-18 18:30:29,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 484 transitions, 2397 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 18:30:29,592 INFO L231 Difference]: Finished difference. Result has 210 places, 237 transitions, 1128 flow [2022-11-18 18:30:29,592 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=1128, PETRI_PLACES=210, PETRI_TRANSITIONS=237} [2022-11-18 18:30:29,595 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 72 predicate places. [2022-11-18 18:30:29,596 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 237 transitions, 1128 flow [2022-11-18 18:30:29,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 69.76) internal successors, (3488), 50 states have internal predecessors, (3488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:29,598 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:30:29,598 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:30:29,611 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d5fd0b-e903-4913-bfe7-7d7e55306e44/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 18:30:29,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d5fd0b-e903-4913-bfe7-7d7e55306e44/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:30:29,805 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 18:30:29,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:30:29,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1813782651, now seen corresponding path program 2 times [2022-11-18 18:30:29,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:30:29,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407876180] [2022-11-18 18:30:29,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:30:29,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:30:29,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:30:34,415 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:30:34,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:30:34,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407876180] [2022-11-18 18:30:34,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407876180] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:30:34,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344398829] [2022-11-18 18:30:34,416 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:30:34,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:30:34,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d5fd0b-e903-4913-bfe7-7d7e55306e44/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:30:34,428 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d5fd0b-e903-4913-bfe7-7d7e55306e44/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:30:34,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d5fd0b-e903-4913-bfe7-7d7e55306e44/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 18:30:34,625 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 18:30:34,626 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:30:34,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-18 18:30:34,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:30:36,071 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:30:36,072 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 43 [2022-11-18 18:30:36,605 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:30:36,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:30:38,009 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:30:38,009 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 127 treesize of output 75 [2022-11-18 18:30:39,369 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:30:39,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344398829] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:30:39,370 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:30:39,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 18, 17] total 58 [2022-11-18 18:30:39,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871192830] [2022-11-18 18:30:39,371 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:30:39,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-11-18 18:30:39,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:30:39,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-11-18 18:30:39,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=540, Invalid=2766, Unknown=0, NotChecked=0, Total=3306 [2022-11-18 18:30:39,380 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 154 [2022-11-18 18:30:39,385 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 237 transitions, 1128 flow. Second operand has 58 states, 58 states have (on average 58.55172413793103) internal successors, (3396), 58 states have internal predecessors, (3396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:39,385 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:30:39,385 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 154 [2022-11-18 18:30:39,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:31:05,412 INFO L130 PetriNetUnfolder]: 12206/20117 cut-off events. [2022-11-18 18:31:05,413 INFO L131 PetriNetUnfolder]: For 56545/56793 co-relation queries the response was YES. [2022-11-18 18:31:05,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68549 conditions, 20117 events. 12206/20117 cut-off events. For 56545/56793 co-relation queries the response was YES. Maximal size of possible extension queue 1072. Compared 155870 event pairs, 408 based on Foata normal form. 13/20055 useless extension candidates. Maximal degree in co-relation 68517. Up to 4195 conditions per place. [2022-11-18 18:31:05,686 INFO L137 encePairwiseOnDemand]: 111/154 looper letters, 841 selfloop transitions, 711 changer transitions 38/1638 dead transitions. [2022-11-18 18:31:05,686 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 1638 transitions, 11749 flow [2022-11-18 18:31:05,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2022-11-18 18:31:05,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2022-11-18 18:31:05,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 8691 transitions. [2022-11-18 18:31:05,712 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4149637127578304 [2022-11-18 18:31:05,712 INFO L72 ComplementDD]: Start complementDD. Operand 136 states and 8691 transitions. [2022-11-18 18:31:05,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 136 states and 8691 transitions. [2022-11-18 18:31:05,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:31:05,720 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 136 states and 8691 transitions. [2022-11-18 18:31:05,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 137 states, 136 states have (on average 63.904411764705884) internal successors, (8691), 136 states have internal predecessors, (8691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:05,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 137 states, 137 states have (on average 154.0) internal successors, (21098), 137 states have internal predecessors, (21098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:05,789 INFO L81 ComplementDD]: Finished complementDD. Result has 137 states, 137 states have (on average 154.0) internal successors, (21098), 137 states have internal predecessors, (21098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:05,797 INFO L175 Difference]: Start difference. First operand has 210 places, 237 transitions, 1128 flow. Second operand 136 states and 8691 transitions. [2022-11-18 18:31:05,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 1638 transitions, 11749 flow [2022-11-18 18:31:06,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 1638 transitions, 11650 flow, removed 34 selfloop flow, removed 14 redundant places. [2022-11-18 18:31:06,572 INFO L231 Difference]: Finished difference. Result has 418 places, 904 transitions, 7681 flow [2022-11-18 18:31:06,572 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=1076, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=136, PETRI_FLOW=7681, PETRI_PLACES=418, PETRI_TRANSITIONS=904} [2022-11-18 18:31:06,573 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 280 predicate places. [2022-11-18 18:31:06,573 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 904 transitions, 7681 flow [2022-11-18 18:31:06,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 58.55172413793103) internal successors, (3396), 58 states have internal predecessors, (3396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:06,575 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:31:06,576 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:31:06,583 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d5fd0b-e903-4913-bfe7-7d7e55306e44/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-18 18:31:06,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d5fd0b-e903-4913-bfe7-7d7e55306e44/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-18 18:31:06,781 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 18:31:06,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:31:06,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1132651911, now seen corresponding path program 3 times [2022-11-18 18:31:06,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:31:06,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683929861] [2022-11-18 18:31:06,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:31:06,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:31:06,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:31:08,718 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:31:08,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:31:08,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683929861] [2022-11-18 18:31:08,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683929861] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:31:08,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278191962] [2022-11-18 18:31:08,719 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 18:31:08,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:31:08,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d5fd0b-e903-4913-bfe7-7d7e55306e44/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:31:08,731 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d5fd0b-e903-4913-bfe7-7d7e55306e44/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:31:08,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d5fd0b-e903-4913-bfe7-7d7e55306e44/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 18:31:08,870 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-18 18:31:08,870 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:31:08,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-18 18:31:08,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:31:10,291 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:31:10,292 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 43 [2022-11-18 18:31:10,856 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:31:10,856 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:31:13,056 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:31:13,057 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 164 treesize of output 164 [2022-11-18 18:31:19,310 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:31:19,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1278191962] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:31:19,310 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:31:19,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 18, 17] total 51 [2022-11-18 18:31:19,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192901270] [2022-11-18 18:31:19,311 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:31:19,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-11-18 18:31:19,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:31:19,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-11-18 18:31:19,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=425, Invalid=2125, Unknown=0, NotChecked=0, Total=2550 [2022-11-18 18:31:19,316 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 154 [2022-11-18 18:31:19,320 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 904 transitions, 7681 flow. Second operand has 51 states, 51 states have (on average 74.66666666666667) internal successors, (3808), 51 states have internal predecessors, (3808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:19,320 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:31:19,321 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 154 [2022-11-18 18:31:19,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:31:34,543 INFO L130 PetriNetUnfolder]: 15326/27366 cut-off events. [2022-11-18 18:31:34,544 INFO L131 PetriNetUnfolder]: For 434326/435857 co-relation queries the response was YES. [2022-11-18 18:31:34,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145249 conditions, 27366 events. 15326/27366 cut-off events. For 434326/435857 co-relation queries the response was YES. Maximal size of possible extension queue 1393. Compared 242254 event pairs, 832 based on Foata normal form. 570/27396 useless extension candidates. Maximal degree in co-relation 145130. Up to 6228 conditions per place. [2022-11-18 18:31:35,202 INFO L137 encePairwiseOnDemand]: 116/154 looper letters, 531 selfloop transitions, 1324 changer transitions 9/2024 dead transitions. [2022-11-18 18:31:35,202 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 2024 transitions, 21657 flow [2022-11-18 18:31:35,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-11-18 18:31:35,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2022-11-18 18:31:35,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 4907 transitions. [2022-11-18 18:31:35,215 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5139296187683284 [2022-11-18 18:31:35,216 INFO L72 ComplementDD]: Start complementDD. Operand 62 states and 4907 transitions. [2022-11-18 18:31:35,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 62 states and 4907 transitions. [2022-11-18 18:31:35,218 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:31:35,219 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 62 states and 4907 transitions. [2022-11-18 18:31:35,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 63 states, 62 states have (on average 79.14516129032258) internal successors, (4907), 62 states have internal predecessors, (4907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:35,239 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 63 states, 63 states have (on average 154.0) internal successors, (9702), 63 states have internal predecessors, (9702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:35,243 INFO L81 ComplementDD]: Finished complementDD. Result has 63 states, 63 states have (on average 154.0) internal successors, (9702), 63 states have internal predecessors, (9702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:35,243 INFO L175 Difference]: Start difference. First operand has 418 places, 904 transitions, 7681 flow. Second operand 62 states and 4907 transitions. [2022-11-18 18:31:35,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 2024 transitions, 21657 flow [2022-11-18 18:31:43,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 2024 transitions, 20687 flow, removed 475 selfloop flow, removed 20 redundant places. [2022-11-18 18:31:43,480 INFO L231 Difference]: Finished difference. Result has 482 places, 1713 transitions, 18951 flow [2022-11-18 18:31:43,481 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=7141, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=904, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=552, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=62, PETRI_FLOW=18951, PETRI_PLACES=482, PETRI_TRANSITIONS=1713} [2022-11-18 18:31:43,481 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 344 predicate places. [2022-11-18 18:31:43,482 INFO L495 AbstractCegarLoop]: Abstraction has has 482 places, 1713 transitions, 18951 flow [2022-11-18 18:31:43,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 74.66666666666667) internal successors, (3808), 51 states have internal predecessors, (3808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:31:43,483 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:31:43,483 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:31:43,491 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d5fd0b-e903-4913-bfe7-7d7e55306e44/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 18:31:43,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d5fd0b-e903-4913-bfe7-7d7e55306e44/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:31:43,689 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 18:31:43,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:31:43,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1934886597, now seen corresponding path program 4 times [2022-11-18 18:31:43,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:31:43,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983980565] [2022-11-18 18:31:43,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:31:43,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:31:43,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:31:46,723 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:31:46,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:31:46,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983980565] [2022-11-18 18:31:46,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983980565] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:31:46,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1914672121] [2022-11-18 18:31:46,724 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 18:31:46,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:31:46,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d5fd0b-e903-4913-bfe7-7d7e55306e44/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:31:46,727 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d5fd0b-e903-4913-bfe7-7d7e55306e44/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:31:46,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d5fd0b-e903-4913-bfe7-7d7e55306e44/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 18:31:46,863 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 18:31:46,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:31:46,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-18 18:31:46,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:31:48,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:31:48,901 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 33 [2022-11-18 18:31:49,415 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:31:49,416 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 43 [2022-11-18 18:31:50,069 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:31:50,069 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:31:53,513 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:31:53,514 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 276 treesize of output 276 [2022-11-18 18:31:53,529 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 181 treesize of output 175 [2022-11-18 18:31:53,541 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 175 treesize of output 157 [2022-11-18 18:31:53,555 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 157 treesize of output 145 [2022-11-18 18:32:03,415 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:32:03,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1914672121] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:32:03,416 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:32:03,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 28, 28] total 78 [2022-11-18 18:32:03,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323116000] [2022-11-18 18:32:03,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:32:03,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2022-11-18 18:32:03,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:32:03,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2022-11-18 18:32:03,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=768, Invalid=5229, Unknown=9, NotChecked=0, Total=6006 [2022-11-18 18:32:03,423 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 154 [2022-11-18 18:32:03,427 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 482 places, 1713 transitions, 18951 flow. Second operand has 78 states, 78 states have (on average 57.666666666666664) internal successors, (4498), 78 states have internal predecessors, (4498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:03,427 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:32:03,428 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 154 [2022-11-18 18:32:03,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:32:43,874 INFO L130 PetriNetUnfolder]: 30461/50537 cut-off events. [2022-11-18 18:32:43,874 INFO L131 PetriNetUnfolder]: For 1305140/1308781 co-relation queries the response was YES. [2022-11-18 18:32:44,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 334760 conditions, 50537 events. 30461/50537 cut-off events. For 1305140/1308781 co-relation queries the response was YES. Maximal size of possible extension queue 2433. Compared 445216 event pairs, 2514 based on Foata normal form. 188/50425 useless extension candidates. Maximal degree in co-relation 334618. Up to 11019 conditions per place. [2022-11-18 18:32:45,101 INFO L137 encePairwiseOnDemand]: 115/154 looper letters, 1201 selfloop transitions, 1872 changer transitions 26/3152 dead transitions. [2022-11-18 18:32:45,102 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 574 places, 3152 transitions, 43088 flow [2022-11-18 18:32:45,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-11-18 18:32:45,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2022-11-18 18:32:45,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 6146 transitions. [2022-11-18 18:32:45,114 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4200956937799043 [2022-11-18 18:32:45,114 INFO L72 ComplementDD]: Start complementDD. Operand 95 states and 6146 transitions. [2022-11-18 18:32:45,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 95 states and 6146 transitions. [2022-11-18 18:32:45,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:32:45,117 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 95 states and 6146 transitions. [2022-11-18 18:32:45,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 96 states, 95 states have (on average 64.69473684210526) internal successors, (6146), 95 states have internal predecessors, (6146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:45,148 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 96 states, 96 states have (on average 154.0) internal successors, (14784), 96 states have internal predecessors, (14784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:45,152 INFO L81 ComplementDD]: Finished complementDD. Result has 96 states, 96 states have (on average 154.0) internal successors, (14784), 96 states have internal predecessors, (14784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:32:45,152 INFO L175 Difference]: Start difference. First operand has 482 places, 1713 transitions, 18951 flow. Second operand 95 states and 6146 transitions. [2022-11-18 18:32:45,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 574 places, 3152 transitions, 43088 flow [2022-11-18 18:33:44,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 558 places, 3152 transitions, 42331 flow, removed 364 selfloop flow, removed 16 redundant places. [2022-11-18 18:33:44,557 INFO L231 Difference]: Finished difference. Result has 607 places, 2394 transitions, 33712 flow [2022-11-18 18:33:44,560 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=18636, PETRI_DIFFERENCE_MINUEND_PLACES=464, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1713, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1229, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=434, PETRI_DIFFERENCE_SUBTRAHEND_STATES=95, PETRI_FLOW=33712, PETRI_PLACES=607, PETRI_TRANSITIONS=2394} [2022-11-18 18:33:44,560 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 469 predicate places. [2022-11-18 18:33:44,561 INFO L495 AbstractCegarLoop]: Abstraction has has 607 places, 2394 transitions, 33712 flow [2022-11-18 18:33:44,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 57.666666666666664) internal successors, (4498), 78 states have internal predecessors, (4498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:33:44,562 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:33:44,562 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:33:44,569 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d5fd0b-e903-4913-bfe7-7d7e55306e44/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 18:33:44,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d5fd0b-e903-4913-bfe7-7d7e55306e44/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:33:44,769 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 18:33:44,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:33:44,770 INFO L85 PathProgramCache]: Analyzing trace with hash 2035467395, now seen corresponding path program 5 times [2022-11-18 18:33:44,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:33:44,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744598916] [2022-11-18 18:33:44,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:33:44,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:33:44,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:47,194 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:33:47,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:33:47,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744598916] [2022-11-18 18:33:47,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744598916] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:33:47,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016573708] [2022-11-18 18:33:47,195 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 18:33:47,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:33:47,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d5fd0b-e903-4913-bfe7-7d7e55306e44/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:33:47,196 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d5fd0b-e903-4913-bfe7-7d7e55306e44/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:33:47,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8d5fd0b-e903-4913-bfe7-7d7e55306e44/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 18:33:47,331 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 18:33:47,331 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:33:47,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 56 conjunts are in the unsatisfiable core [2022-11-18 18:33:47,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:33:47,412 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 18:33:47,902 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 18:33:47,903 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-18 18:33:49,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:33:49,593 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 33 [2022-11-18 18:33:49,926 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 34 [2022-11-18 18:33:50,834 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:33:50,834 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 44 [2022-11-18 18:33:51,623 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:33:51,623 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:33:58,286 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:33:58,286 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 746 treesize of output 722 [2022-11-18 18:33:58,307 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 627 treesize of output 603 [2022-11-18 18:33:58,327 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 603 treesize of output 591 [2022-11-18 18:33:58,350 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 591 treesize of output 555 [2022-11-18 18:33:58,369 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 555 treesize of output 507 [2022-11-18 18:33:58,393 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 507 treesize of output 483 [2022-11-18 18:33:58,410 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 483 treesize of output 465 [2022-11-18 18:34:15,413 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-18 18:34:15,430 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-18 18:34:15,449 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-18 18:34:15,850 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:34:15,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016573708] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:34:15,851 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:34:15,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 30, 30] total 78 [2022-11-18 18:34:15,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266464661] [2022-11-18 18:34:15,851 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:34:15,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2022-11-18 18:34:15,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:15,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2022-11-18 18:34:15,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=745, Invalid=5247, Unknown=14, NotChecked=0, Total=6006 [2022-11-18 18:34:15,860 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 154 [2022-11-18 18:34:15,866 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 607 places, 2394 transitions, 33712 flow. Second operand has 78 states, 78 states have (on average 62.51282051282051) internal successors, (4876), 78 states have internal predecessors, (4876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:15,866 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:34:15,866 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 154 [2022-11-18 18:34:15,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand