./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-more-max-array.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee79936b-29ce-46f7-a2f7-71a3466cd0eb/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee79936b-29ce-46f7-a2f7-71a3466cd0eb/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee79936b-29ce-46f7-a2f7-71a3466cd0eb/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee79936b-29ce-46f7-a2f7-71a3466cd0eb/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-max-array.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee79936b-29ce-46f7-a2f7-71a3466cd0eb/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee79936b-29ce-46f7-a2f7-71a3466cd0eb/bin/uautomizer-tPACEb0tL8 --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 a87860dbf851812846995aa918799e2b576306268e8c461660702f868d3b2804 --- 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-e04fb08 [2022-11-16 12:14:31,767 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:14:31,775 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:14:31,826 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:14:31,829 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:14:31,835 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:14:31,840 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:14:31,851 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:14:31,854 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:14:31,856 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:14:31,859 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:14:31,863 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:14:31,863 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:14:31,874 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:14:31,876 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:14:31,878 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:14:31,882 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:14:31,885 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:14:31,888 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:14:31,891 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:14:31,900 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:14:31,902 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:14:31,904 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:14:31,907 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:14:31,913 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:14:31,920 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:14:31,920 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:14:31,922 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:14:31,924 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:14:31,925 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:14:31,926 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:14:31,928 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:14:31,930 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:14:31,932 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:14:31,934 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:14:31,934 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:14:31,935 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:14:31,935 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:14:31,936 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:14:31,937 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:14:31,939 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:14:31,940 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee79936b-29ce-46f7-a2f7-71a3466cd0eb/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 12:14:31,969 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:14:31,970 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:14:31,970 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:14:31,971 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:14:31,972 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:14:31,972 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:14:31,973 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:14:31,973 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:14:31,974 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:14:31,974 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:14:31,975 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:14:31,975 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:14:31,975 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:14:31,975 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:14:31,976 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:14:31,976 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:14:31,976 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:14:31,977 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:14:31,977 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:14:31,977 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:14:31,978 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:14:31,978 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:14:31,978 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:14:31,979 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:14:31,979 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:14:31,979 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:14:31,980 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:14:31,980 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:14:31,980 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:14:31,981 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:14:31,981 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:14:31,981 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:14:31,982 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:14:31,982 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_ee79936b-29ce-46f7-a2f7-71a3466cd0eb/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee79936b-29ce-46f7-a2f7-71a3466cd0eb/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a87860dbf851812846995aa918799e2b576306268e8c461660702f868d3b2804 [2022-11-16 12:14:32,397 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:14:32,428 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:14:32,431 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:14:32,433 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:14:32,434 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:14:32,436 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee79936b-29ce-46f7-a2f7-71a3466cd0eb/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/popl20-more-max-array.wvr.c [2022-11-16 12:14:32,543 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee79936b-29ce-46f7-a2f7-71a3466cd0eb/bin/uautomizer-tPACEb0tL8/data/da9e240bc/48ba2e5eb75b4f31be94c9a3650eb5c9/FLAGf23e4a5f9 [2022-11-16 12:14:33,225 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:14:33,225 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee79936b-29ce-46f7-a2f7-71a3466cd0eb/sv-benchmarks/c/weaver/popl20-more-max-array.wvr.c [2022-11-16 12:14:33,239 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee79936b-29ce-46f7-a2f7-71a3466cd0eb/bin/uautomizer-tPACEb0tL8/data/da9e240bc/48ba2e5eb75b4f31be94c9a3650eb5c9/FLAGf23e4a5f9 [2022-11-16 12:14:33,534 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee79936b-29ce-46f7-a2f7-71a3466cd0eb/bin/uautomizer-tPACEb0tL8/data/da9e240bc/48ba2e5eb75b4f31be94c9a3650eb5c9 [2022-11-16 12:14:33,538 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:14:33,540 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:14:33,543 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:14:33,544 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:14:33,548 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:14:33,549 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:14:33" (1/1) ... [2022-11-16 12:14:33,552 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e327e0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:14:33, skipping insertion in model container [2022-11-16 12:14:33,552 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:14:33" (1/1) ... [2022-11-16 12:14:33,562 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:14:33,590 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:14:33,878 WARN L229 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_ee79936b-29ce-46f7-a2f7-71a3466cd0eb/sv-benchmarks/c/weaver/popl20-more-max-array.wvr.c[2553,2566] [2022-11-16 12:14:33,897 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:14:33,908 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:14:33,937 WARN L229 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_ee79936b-29ce-46f7-a2f7-71a3466cd0eb/sv-benchmarks/c/weaver/popl20-more-max-array.wvr.c[2553,2566] [2022-11-16 12:14:33,942 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:14:33,961 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:14:33,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:14:33 WrapperNode [2022-11-16 12:14:33,962 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:14:33,963 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:14:33,964 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:14:33,964 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:14:33,974 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:14:33" (1/1) ... [2022-11-16 12:14:33,998 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:14:33" (1/1) ... [2022-11-16 12:14:34,044 INFO L138 Inliner]: procedures = 24, calls = 43, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 101 [2022-11-16 12:14:34,045 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:14:34,046 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:14:34,047 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:14:34,047 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:14:34,059 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:14:33" (1/1) ... [2022-11-16 12:14:34,059 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:14:33" (1/1) ... [2022-11-16 12:14:34,079 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:14:33" (1/1) ... [2022-11-16 12:14:34,080 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:14:33" (1/1) ... [2022-11-16 12:14:34,095 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:14:33" (1/1) ... [2022-11-16 12:14:34,111 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:14:33" (1/1) ... [2022-11-16 12:14:34,114 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:14:33" (1/1) ... [2022-11-16 12:14:34,115 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:14:33" (1/1) ... [2022-11-16 12:14:34,118 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:14:34,126 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:14:34,126 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:14:34,126 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:14:34,134 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:14:33" (1/1) ... [2022-11-16 12:14:34,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:14:34,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee79936b-29ce-46f7-a2f7-71a3466cd0eb/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:14:34,178 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee79936b-29ce-46f7-a2f7-71a3466cd0eb/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:14:34,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee79936b-29ce-46f7-a2f7-71a3466cd0eb/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:14:34,239 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:14:34,239 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 12:14:34,240 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 12:14:34,240 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 12:14:34,240 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 12:14:34,241 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-16 12:14:34,241 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-16 12:14:34,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:14:34,241 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:14:34,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:14:34,242 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-16 12:14:34,242 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-16 12:14:34,242 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 12:14:34,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:14:34,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:14:34,243 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:14:34,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:14:34,245 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 12:14:34,436 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:14:34,440 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:14:34,891 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:14:34,998 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:14:34,999 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-16 12:14:35,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:14:35 BoogieIcfgContainer [2022-11-16 12:14:35,003 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:14:35,006 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:14:35,007 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:14:35,013 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:14:35,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:14:33" (1/3) ... [2022-11-16 12:14:35,014 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29048f0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:14:35, skipping insertion in model container [2022-11-16 12:14:35,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:14:33" (2/3) ... [2022-11-16 12:14:35,015 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29048f0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:14:35, skipping insertion in model container [2022-11-16 12:14:35,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:14:35" (3/3) ... [2022-11-16 12:14:35,018 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-max-array.wvr.c [2022-11-16 12:14:35,031 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:14:35,070 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:14:35,071 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 12:14:35,071 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:14:35,241 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-16 12:14:35,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 151 places, 153 transitions, 330 flow [2022-11-16 12:14:35,503 INFO L130 PetriNetUnfolder]: 12/150 cut-off events. [2022-11-16 12:14:35,505 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-16 12:14:35,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 150 events. 12/150 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. 0/137 useless extension candidates. Maximal degree in co-relation 112. Up to 2 conditions per place. [2022-11-16 12:14:35,514 INFO L82 GeneralOperation]: Start removeDead. Operand has 151 places, 153 transitions, 330 flow [2022-11-16 12:14:35,527 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 137 places, 139 transitions, 296 flow [2022-11-16 12:14:35,558 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:14:35,571 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;@cbe05bd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:14:35,571 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-16 12:14:35,663 INFO L130 PetriNetUnfolder]: 12/138 cut-off events. [2022-11-16 12:14:35,664 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-16 12:14:35,664 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:14:35,666 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] [2022-11-16 12:14:35,667 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)] === [2022-11-16 12:14:35,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:14:35,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1463698298, now seen corresponding path program 1 times [2022-11-16 12:14:35,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:14:35,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940775614] [2022-11-16 12:14:35,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:14:35,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:14:35,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:36,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:14:36,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:14:36,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940775614] [2022-11-16 12:14:36,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940775614] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:14:36,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:14:36,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:14:36,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403027550] [2022-11-16 12:14:36,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:14:36,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 12:14:36,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:14:36,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 12:14:36,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 12:14:36,215 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 153 [2022-11-16 12:14:36,219 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 139 transitions, 296 flow. Second operand has 2 states, 2 states have (on average 140.0) internal successors, (280), 2 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:14:36,219 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:14:36,220 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 153 [2022-11-16 12:14:36,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:14:36,374 INFO L130 PetriNetUnfolder]: 41/264 cut-off events. [2022-11-16 12:14:36,374 INFO L131 PetriNetUnfolder]: For 49/50 co-relation queries the response was YES. [2022-11-16 12:14:36,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 355 conditions, 264 events. 41/264 cut-off events. For 49/50 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 717 event pairs, 15 based on Foata normal form. 42/275 useless extension candidates. Maximal degree in co-relation 216. Up to 59 conditions per place. [2022-11-16 12:14:36,386 INFO L137 encePairwiseOnDemand]: 145/153 looper letters, 9 selfloop transitions, 0 changer transitions 4/131 dead transitions. [2022-11-16 12:14:36,387 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 131 transitions, 298 flow [2022-11-16 12:14:36,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 12:14:36,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-16 12:14:36,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 287 transitions. [2022-11-16 12:14:36,406 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9379084967320261 [2022-11-16 12:14:36,408 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 287 transitions. [2022-11-16 12:14:36,409 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 287 transitions. [2022-11-16 12:14:36,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:14:36,414 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 287 transitions. [2022-11-16 12:14:36,418 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 143.5) internal successors, (287), 2 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:14:36,425 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:14:36,426 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:14:36,429 INFO L175 Difference]: Start difference. First operand has 137 places, 139 transitions, 296 flow. Second operand 2 states and 287 transitions. [2022-11-16 12:14:36,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 131 transitions, 298 flow [2022-11-16 12:14:36,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 131 transitions, 286 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-16 12:14:36,447 INFO L231 Difference]: Finished difference. Result has 132 places, 127 transitions, 260 flow [2022-11-16 12:14:36,450 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=260, PETRI_PLACES=132, PETRI_TRANSITIONS=127} [2022-11-16 12:14:36,455 INFO L288 CegarLoopForPetriNet]: 137 programPoint places, -5 predicate places. [2022-11-16 12:14:36,458 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 127 transitions, 260 flow [2022-11-16 12:14:36,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 140.0) internal successors, (280), 2 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:14:36,459 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:14:36,461 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] [2022-11-16 12:14:36,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:14:36,462 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)] === [2022-11-16 12:14:36,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:14:36,463 INFO L85 PathProgramCache]: Analyzing trace with hash 563593522, now seen corresponding path program 1 times [2022-11-16 12:14:36,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:14:36,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017827307] [2022-11-16 12:14:36,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:14:36,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:14:36,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:37,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:14:37,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:14:37,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017827307] [2022-11-16 12:14:37,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017827307] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:14:37,366 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:14:37,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 12:14:37,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965277786] [2022-11-16 12:14:37,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:14:37,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:14:37,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:14:37,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:14:37,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:14:37,373 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 153 [2022-11-16 12:14:37,375 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 127 transitions, 260 flow. Second operand has 8 states, 8 states have (on average 98.5) internal successors, (788), 8 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:14:37,375 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:14:37,375 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 153 [2022-11-16 12:14:37,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:14:38,018 INFO L130 PetriNetUnfolder]: 295/678 cut-off events. [2022-11-16 12:14:38,019 INFO L131 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2022-11-16 12:14:38,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1137 conditions, 678 events. 295/678 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3005 event pairs, 167 based on Foata normal form. 1/510 useless extension candidates. Maximal degree in co-relation 1134. Up to 421 conditions per place. [2022-11-16 12:14:38,032 INFO L137 encePairwiseOnDemand]: 143/153 looper letters, 44 selfloop transitions, 6 changer transitions 4/135 dead transitions. [2022-11-16 12:14:38,033 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 135 transitions, 384 flow [2022-11-16 12:14:38,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:14:38,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 12:14:38,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 901 transitions. [2022-11-16 12:14:38,045 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.654320987654321 [2022-11-16 12:14:38,046 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 901 transitions. [2022-11-16 12:14:38,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 901 transitions. [2022-11-16 12:14:38,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:14:38,048 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 901 transitions. [2022-11-16 12:14:38,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 100.11111111111111) internal successors, (901), 9 states have internal predecessors, (901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:14:38,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 153.0) internal successors, (1530), 10 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:14:38,063 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 153.0) internal successors, (1530), 10 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:14:38,063 INFO L175 Difference]: Start difference. First operand has 132 places, 127 transitions, 260 flow. Second operand 9 states and 901 transitions. [2022-11-16 12:14:38,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 135 transitions, 384 flow [2022-11-16 12:14:38,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 135 transitions, 384 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:14:38,073 INFO L231 Difference]: Finished difference. Result has 140 places, 128 transitions, 286 flow [2022-11-16 12:14:38,073 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=286, PETRI_PLACES=140, PETRI_TRANSITIONS=128} [2022-11-16 12:14:38,076 INFO L288 CegarLoopForPetriNet]: 137 programPoint places, 3 predicate places. [2022-11-16 12:14:38,077 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 128 transitions, 286 flow [2022-11-16 12:14:38,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 98.5) internal successors, (788), 8 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:14:38,078 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:14:38,079 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] [2022-11-16 12:14:38,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:14:38,080 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)] === [2022-11-16 12:14:38,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:14:38,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1756520908, now seen corresponding path program 1 times [2022-11-16 12:14:38,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:14:38,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526555408] [2022-11-16 12:14:38,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:14:38,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:14:38,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:38,549 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:14:38,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:14:38,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526555408] [2022-11-16 12:14:38,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526555408] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:14:38,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [710585780] [2022-11-16 12:14:38,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:14:38,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:14:38,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee79936b-29ce-46f7-a2f7-71a3466cd0eb/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:14:38,561 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee79936b-29ce-46f7-a2f7-71a3466cd0eb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:14:38,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee79936b-29ce-46f7-a2f7-71a3466cd0eb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:14:38,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:38,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 12:14:38,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:14:39,062 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:14:39,062 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:14:39,391 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:14:39,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [710585780] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 12:14:39,392 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:14:39,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 14 [2022-11-16 12:14:39,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695165133] [2022-11-16 12:14:39,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:14:39,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:14:39,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:14:39,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:14:39,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:14:39,397 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 153 [2022-11-16 12:14:39,399 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 128 transitions, 286 flow. Second operand has 7 states, 7 states have (on average 116.42857142857143) internal successors, (815), 7 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:14:39,399 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:14:39,400 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 153 [2022-11-16 12:14:39,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:14:39,733 INFO L130 PetriNetUnfolder]: 182/617 cut-off events. [2022-11-16 12:14:39,734 INFO L131 PetriNetUnfolder]: For 25/25 co-relation queries the response was YES. [2022-11-16 12:14:39,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 942 conditions, 617 events. 182/617 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3083 event pairs, 80 based on Foata normal form. 0/526 useless extension candidates. Maximal degree in co-relation 934. Up to 141 conditions per place. [2022-11-16 12:14:39,742 INFO L137 encePairwiseOnDemand]: 145/153 looper letters, 33 selfloop transitions, 7 changer transitions 0/136 dead transitions. [2022-11-16 12:14:39,742 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 136 transitions, 384 flow [2022-11-16 12:14:39,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:14:39,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:14:39,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 831 transitions. [2022-11-16 12:14:39,746 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7759103641456583 [2022-11-16 12:14:39,746 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 831 transitions. [2022-11-16 12:14:39,747 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 831 transitions. [2022-11-16 12:14:39,748 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:14:39,748 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 831 transitions. [2022-11-16 12:14:39,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 118.71428571428571) internal successors, (831), 7 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:14:39,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 153.0) internal successors, (1224), 8 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:14:39,756 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 153.0) internal successors, (1224), 8 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:14:39,756 INFO L175 Difference]: Start difference. First operand has 140 places, 128 transitions, 286 flow. Second operand 7 states and 831 transitions. [2022-11-16 12:14:39,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 136 transitions, 384 flow [2022-11-16 12:14:39,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 136 transitions, 368 flow, removed 3 selfloop flow, removed 7 redundant places. [2022-11-16 12:14:39,765 INFO L231 Difference]: Finished difference. Result has 139 places, 130 transitions, 303 flow [2022-11-16 12:14:39,765 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=303, PETRI_PLACES=139, PETRI_TRANSITIONS=130} [2022-11-16 12:14:39,768 INFO L288 CegarLoopForPetriNet]: 137 programPoint places, 2 predicate places. [2022-11-16 12:14:39,769 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 130 transitions, 303 flow [2022-11-16 12:14:39,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 116.42857142857143) internal successors, (815), 7 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:14:39,770 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:14:39,770 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] [2022-11-16 12:14:39,785 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee79936b-29ce-46f7-a2f7-71a3466cd0eb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:14:39,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee79936b-29ce-46f7-a2f7-71a3466cd0eb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:14:39,979 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)] === [2022-11-16 12:14:39,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:14:39,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1514646045, now seen corresponding path program 1 times [2022-11-16 12:14:39,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:14:39,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782015319] [2022-11-16 12:14:39,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:14:39,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:14:40,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:40,374 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:14:40,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:14:40,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782015319] [2022-11-16 12:14:40,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782015319] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:14:40,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070242432] [2022-11-16 12:14:40,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:14:40,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:14:40,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee79936b-29ce-46f7-a2f7-71a3466cd0eb/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:14:40,381 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee79936b-29ce-46f7-a2f7-71a3466cd0eb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:14:40,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee79936b-29ce-46f7-a2f7-71a3466cd0eb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:14:40,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:40,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:14:40,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:14:40,826 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:14:40,831 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:14:41,201 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:14:41,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2070242432] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 12:14:41,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:14:41,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 18 [2022-11-16 12:14:41,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192319575] [2022-11-16 12:14:41,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:14:41,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:14:41,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:14:41,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:14:41,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2022-11-16 12:14:41,214 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 153 [2022-11-16 12:14:41,216 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 130 transitions, 303 flow. Second operand has 9 states, 9 states have (on average 109.33333333333333) internal successors, (984), 9 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:14:41,217 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:14:41,217 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 153 [2022-11-16 12:14:41,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:14:41,936 INFO L130 PetriNetUnfolder]: 854/1551 cut-off events. [2022-11-16 12:14:41,936 INFO L131 PetriNetUnfolder]: For 557/813 co-relation queries the response was YES. [2022-11-16 12:14:41,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3288 conditions, 1551 events. 854/1551 cut-off events. For 557/813 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 8602 event pairs, 215 based on Foata normal form. 256/1642 useless extension candidates. Maximal degree in co-relation 3280. Up to 429 conditions per place. [2022-11-16 12:14:41,955 INFO L137 encePairwiseOnDemand]: 142/153 looper letters, 84 selfloop transitions, 17 changer transitions 0/190 dead transitions. [2022-11-16 12:14:41,955 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 190 transitions, 676 flow [2022-11-16 12:14:41,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:14:41,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 12:14:41,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1261 transitions. [2022-11-16 12:14:41,960 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7492572786690433 [2022-11-16 12:14:41,961 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1261 transitions. [2022-11-16 12:14:41,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1261 transitions. [2022-11-16 12:14:41,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:14:41,963 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1261 transitions. [2022-11-16 12:14:41,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 114.63636363636364) internal successors, (1261), 11 states have internal predecessors, (1261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:14:41,972 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 153.0) internal successors, (1836), 12 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:14:41,973 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 153.0) internal successors, (1836), 12 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:14:41,973 INFO L175 Difference]: Start difference. First operand has 139 places, 130 transitions, 303 flow. Second operand 11 states and 1261 transitions. [2022-11-16 12:14:41,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 190 transitions, 676 flow [2022-11-16 12:14:41,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 190 transitions, 663 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 12:14:41,980 INFO L231 Difference]: Finished difference. Result has 149 places, 141 transitions, 383 flow [2022-11-16 12:14:41,980 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=383, PETRI_PLACES=149, PETRI_TRANSITIONS=141} [2022-11-16 12:14:41,982 INFO L288 CegarLoopForPetriNet]: 137 programPoint places, 12 predicate places. [2022-11-16 12:14:41,982 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 141 transitions, 383 flow [2022-11-16 12:14:41,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 109.33333333333333) internal successors, (984), 9 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:14:41,983 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:14:41,983 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] [2022-11-16 12:14:42,000 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee79936b-29ce-46f7-a2f7-71a3466cd0eb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:14:42,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee79936b-29ce-46f7-a2f7-71a3466cd0eb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:14:42,191 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)] === [2022-11-16 12:14:42,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:14:42,192 INFO L85 PathProgramCache]: Analyzing trace with hash -264680869, now seen corresponding path program 2 times [2022-11-16 12:14:42,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:14:42,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632628268] [2022-11-16 12:14:42,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:14:42,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:14:42,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:42,567 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:14:42,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:14:42,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632628268] [2022-11-16 12:14:42,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632628268] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:14:42,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056881233] [2022-11-16 12:14:42,570 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:14:42,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:14:42,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee79936b-29ce-46f7-a2f7-71a3466cd0eb/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:14:42,572 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee79936b-29ce-46f7-a2f7-71a3466cd0eb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:14:42,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee79936b-29ce-46f7-a2f7-71a3466cd0eb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 12:14:42,730 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 12:14:42,731 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:14:42,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:14:42,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:14:43,121 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 12:14:43,122 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:14:43,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2056881233] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:14:43,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:14:43,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2022-11-16 12:14:43,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623717105] [2022-11-16 12:14:43,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:14:43,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:14:43,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:14:43,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:14:43,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:14:43,127 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 153 [2022-11-16 12:14:43,129 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 141 transitions, 383 flow. Second operand has 6 states, 6 states have (on average 106.5) internal successors, (639), 6 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:14:43,129 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:14:43,130 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 153 [2022-11-16 12:14:43,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:14:43,707 INFO L130 PetriNetUnfolder]: 617/1313 cut-off events. [2022-11-16 12:14:43,708 INFO L131 PetriNetUnfolder]: For 865/1079 co-relation queries the response was YES. [2022-11-16 12:14:43,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3058 conditions, 1313 events. 617/1313 cut-off events. For 865/1079 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 7315 event pairs, 178 based on Foata normal form. 241/1517 useless extension candidates. Maximal degree in co-relation 3046. Up to 535 conditions per place. [2022-11-16 12:14:43,724 INFO L137 encePairwiseOnDemand]: 144/153 looper letters, 48 selfloop transitions, 13 changer transitions 0/154 dead transitions. [2022-11-16 12:14:43,724 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 154 transitions, 558 flow [2022-11-16 12:14:43,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:14:43,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 12:14:43,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 857 transitions. [2022-11-16 12:14:43,728 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7001633986928104 [2022-11-16 12:14:43,729 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 857 transitions. [2022-11-16 12:14:43,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 857 transitions. [2022-11-16 12:14:43,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:14:43,730 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 857 transitions. [2022-11-16 12:14:43,733 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 107.125) internal successors, (857), 8 states have internal predecessors, (857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:14:43,736 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 153.0) internal successors, (1377), 9 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:14:43,737 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 153.0) internal successors, (1377), 9 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:14:43,738 INFO L175 Difference]: Start difference. First operand has 149 places, 141 transitions, 383 flow. Second operand 8 states and 857 transitions. [2022-11-16 12:14:43,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 154 transitions, 558 flow [2022-11-16 12:14:43,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 154 transitions, 551 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 12:14:43,751 INFO L231 Difference]: Finished difference. Result has 154 places, 144 transitions, 444 flow [2022-11-16 12:14:43,752 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=444, PETRI_PLACES=154, PETRI_TRANSITIONS=144} [2022-11-16 12:14:43,756 INFO L288 CegarLoopForPetriNet]: 137 programPoint places, 17 predicate places. [2022-11-16 12:14:43,756 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 144 transitions, 444 flow [2022-11-16 12:14:43,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 106.5) internal successors, (639), 6 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:14:43,757 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:14:43,757 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] [2022-11-16 12:14:43,769 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee79936b-29ce-46f7-a2f7-71a3466cd0eb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:14:43,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee79936b-29ce-46f7-a2f7-71a3466cd0eb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:14:43,965 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)] === [2022-11-16 12:14:43,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:14:43,966 INFO L85 PathProgramCache]: Analyzing trace with hash -129815812, now seen corresponding path program 1 times [2022-11-16 12:14:43,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:14:43,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87245384] [2022-11-16 12:14:43,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:14:43,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:14:44,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:46,186 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:14:46,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:14:46,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87245384] [2022-11-16 12:14:46,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87245384] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:14:46,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729669360] [2022-11-16 12:14:46,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:14:46,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:14:46,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee79936b-29ce-46f7-a2f7-71a3466cd0eb/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:14:46,190 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee79936b-29ce-46f7-a2f7-71a3466cd0eb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:14:46,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee79936b-29ce-46f7-a2f7-71a3466cd0eb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 12:14:46,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:14:46,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-16 12:14:46,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:14:48,216 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:14:48,218 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 63 treesize of output 43 [2022-11-16 12:14:49,232 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:14:49,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:14:50,330 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:14:50,331 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 103 treesize of output 91 [2022-11-16 12:14:52,060 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:14:52,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [729669360] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:14:52,061 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:14:52,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 24, 18] total 57 [2022-11-16 12:14:52,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997237051] [2022-11-16 12:14:52,062 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:14:52,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-11-16 12:14:52,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:14:52,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-11-16 12:14:52,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=534, Invalid=2658, Unknown=0, NotChecked=0, Total=3192 [2022-11-16 12:14:52,072 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 153 [2022-11-16 12:14:52,078 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 144 transitions, 444 flow. Second operand has 57 states, 57 states have (on average 68.28070175438596) internal successors, (3892), 57 states have internal predecessors, (3892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:14:52,078 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:14:52,078 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 153 [2022-11-16 12:14:52,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:15:16,264 INFO L130 PetriNetUnfolder]: 12543/19764 cut-off events. [2022-11-16 12:15:16,265 INFO L131 PetriNetUnfolder]: For 20635/20635 co-relation queries the response was YES. [2022-11-16 12:15:16,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52754 conditions, 19764 events. 12543/19764 cut-off events. For 20635/20635 co-relation queries the response was YES. Maximal size of possible extension queue 988. Compared 144069 event pairs, 718 based on Foata normal form. 2/19627 useless extension candidates. Maximal degree in co-relation 52740. Up to 6897 conditions per place. [2022-11-16 12:15:16,481 INFO L137 encePairwiseOnDemand]: 115/153 looper letters, 911 selfloop transitions, 500 changer transitions 12/1475 dead transitions. [2022-11-16 12:15:16,481 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 1475 transitions, 8114 flow [2022-11-16 12:15:16,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2022-11-16 12:15:16,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2022-11-16 12:15:16,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 9903 transitions. [2022-11-16 12:15:16,583 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49034462269756385 [2022-11-16 12:15:16,584 INFO L72 ComplementDD]: Start complementDD. Operand 132 states and 9903 transitions. [2022-11-16 12:15:16,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 132 states and 9903 transitions. [2022-11-16 12:15:16,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:15:16,594 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 132 states and 9903 transitions. [2022-11-16 12:15:16,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 133 states, 132 states have (on average 75.02272727272727) internal successors, (9903), 132 states have internal predecessors, (9903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:15:16,682 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 133 states, 133 states have (on average 153.0) internal successors, (20349), 133 states have internal predecessors, (20349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:15:16,693 INFO L81 ComplementDD]: Finished complementDD. Result has 133 states, 133 states have (on average 153.0) internal successors, (20349), 133 states have internal predecessors, (20349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:15:16,694 INFO L175 Difference]: Start difference. First operand has 154 places, 144 transitions, 444 flow. Second operand 132 states and 9903 transitions. [2022-11-16 12:15:16,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 1475 transitions, 8114 flow [2022-11-16 12:15:17,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 1475 transitions, 7994 flow, removed 13 selfloop flow, removed 5 redundant places. [2022-11-16 12:15:17,038 INFO L231 Difference]: Finished difference. Result has 332 places, 672 transitions, 4186 flow [2022-11-16 12:15:17,039 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=132, PETRI_FLOW=4186, PETRI_PLACES=332, PETRI_TRANSITIONS=672} [2022-11-16 12:15:17,040 INFO L288 CegarLoopForPetriNet]: 137 programPoint places, 195 predicate places. [2022-11-16 12:15:17,040 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 672 transitions, 4186 flow [2022-11-16 12:15:17,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 68.28070175438596) internal successors, (3892), 57 states have internal predecessors, (3892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:15:17,043 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:15:17,043 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] [2022-11-16 12:15:17,056 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee79936b-29ce-46f7-a2f7-71a3466cd0eb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 12:15:17,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee79936b-29ce-46f7-a2f7-71a3466cd0eb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-16 12:15:17,250 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)] === [2022-11-16 12:15:17,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:15:17,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1104815660, now seen corresponding path program 2 times [2022-11-16 12:15:17,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:15:17,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288446926] [2022-11-16 12:15:17,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:15:17,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:15:17,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:15:19,613 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:15:19,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:15:19,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288446926] [2022-11-16 12:15:19,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288446926] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:15:19,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037724925] [2022-11-16 12:15:19,614 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:15:19,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:15:19,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee79936b-29ce-46f7-a2f7-71a3466cd0eb/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:15:19,618 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee79936b-29ce-46f7-a2f7-71a3466cd0eb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:15:19,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee79936b-29ce-46f7-a2f7-71a3466cd0eb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 12:15:19,785 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:15:19,785 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:15:19,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-16 12:15:19,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:15:20,807 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2022-11-16 12:15:21,409 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 [2022-11-16 12:15:21,706 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 [2022-11-16 12:15:21,982 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 [2022-11-16 12:15:22,910 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:15:22,914 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 63 treesize of output 43 [2022-11-16 12:15:23,650 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:15:23,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:15:28,506 WARN L833 $PredicateComparison]: unable to prove that (and (or (= c_~max1~0 c_~max2~0) (forall ((v_ArrVal_193 (Array Int Int)) (v_ArrVal_192 (Array Int Int)) (v_thread3Thread1of1ForFork1_~i~2_23 Int)) (let ((.cse0 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_192) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_193) c_~A~0.base))) (or (< v_thread3Thread1of1ForFork1_~i~2_23 0) (< c_~max1~0 (select .cse0 c_~A~0.offset)) (< c_~max2~0 (select .cse0 (+ c_~A~0.offset (* v_thread3Thread1of1ForFork1_~i~2_23 4)))) (< 0 v_thread3Thread1of1ForFork1_~i~2_23))))) (forall ((v_ArrVal_193 (Array Int Int)) (v_ArrVal_192 (Array Int Int)) (v_thread3Thread1of1ForFork1_~i~2_23 Int)) (let ((.cse2 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_192) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_193) c_~A~0.base))) (let ((.cse1 (select .cse2 (+ c_~A~0.offset (* v_thread3Thread1of1ForFork1_~i~2_23 4))))) (or (< v_thread3Thread1of1ForFork1_~i~2_23 0) (= .cse1 c_~max1~0) (< c_~max1~0 (select .cse2 c_~A~0.offset)) (not (< c_~max2~0 .cse1)) (< 0 v_thread3Thread1of1ForFork1_~i~2_23))))) (forall ((v_ArrVal_193 (Array Int Int)) (v_ArrVal_192 (Array Int Int)) (v_thread3Thread1of1ForFork1_~i~2_23 Int)) (let ((.cse4 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_192) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_193) c_~A~0.base))) (let ((.cse3 (select .cse4 c_~A~0.offset))) (or (= .cse3 c_~max2~0) (< v_thread3Thread1of1ForFork1_~i~2_23 0) (not (< c_~max1~0 .cse3)) (< c_~max2~0 (select .cse4 (+ c_~A~0.offset (* v_thread3Thread1of1ForFork1_~i~2_23 4)))) (< 0 v_thread3Thread1of1ForFork1_~i~2_23)))))) is different from false [2022-11-16 12:15:29,831 WARN L833 $PredicateComparison]: unable to prove that (and (or (= c_~max1~0 c_~max2~0) (forall ((v_ArrVal_191 (Array Int Int)) (v_ArrVal_193 (Array Int Int)) (v_thread3Thread1of1ForFork1_~i~2_23 Int) (v_ArrVal_192 (Array Int Int))) (let ((.cse0 (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_191) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_192) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_193) |c_ULTIMATE.start_main_#t~ret12#1.base|))) (or (< c_~max1~0 (select .cse0 |c_ULTIMATE.start_main_#t~ret12#1.offset|)) (< c_~max2~0 (select .cse0 (+ |c_ULTIMATE.start_main_#t~ret12#1.offset| (* v_thread3Thread1of1ForFork1_~i~2_23 4)))) (< v_thread3Thread1of1ForFork1_~i~2_23 0) (< 0 v_thread3Thread1of1ForFork1_~i~2_23))))) (forall ((v_ArrVal_191 (Array Int Int)) (v_ArrVal_193 (Array Int Int)) (v_ArrVal_192 (Array Int Int)) (v_thread3Thread1of1ForFork1_~i~2_23 Int)) (let ((.cse1 (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_191) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_192) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_193) |c_ULTIMATE.start_main_#t~ret12#1.base|))) (let ((.cse2 (select .cse1 (+ |c_ULTIMATE.start_main_#t~ret12#1.offset| (* v_thread3Thread1of1ForFork1_~i~2_23 4))))) (or (< c_~max1~0 (select .cse1 |c_ULTIMATE.start_main_#t~ret12#1.offset|)) (= .cse2 c_~max1~0) (< v_thread3Thread1of1ForFork1_~i~2_23 0) (not (< c_~max2~0 .cse2)) (< 0 v_thread3Thread1of1ForFork1_~i~2_23))))) (forall ((v_ArrVal_191 (Array Int Int)) (v_ArrVal_193 (Array Int Int)) (v_ArrVal_192 (Array Int Int)) (v_thread3Thread1of1ForFork1_~i~2_23 Int)) (let ((.cse3 (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_191) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_192) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_193) |c_ULTIMATE.start_main_#t~ret12#1.base|))) (let ((.cse4 (select .cse3 |c_ULTIMATE.start_main_#t~ret12#1.offset|))) (or (< c_~max2~0 (select .cse3 (+ |c_ULTIMATE.start_main_#t~ret12#1.offset| (* v_thread3Thread1of1ForFork1_~i~2_23 4)))) (< v_thread3Thread1of1ForFork1_~i~2_23 0) (= .cse4 c_~max2~0) (not (< c_~max1~0 .cse4)) (< 0 v_thread3Thread1of1ForFork1_~i~2_23)))))) is different from false [2022-11-16 12:15:31,051 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:15:31,052 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 66 [2022-11-16 12:15:31,072 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 12:15:31,073 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 375 treesize of output 363 [2022-11-16 12:15:31,105 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 12:15:31,106 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 359 treesize of output 323 [2022-11-16 12:15:31,130 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 12:15:31,131 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 319 treesize of output 303 [2022-11-16 12:15:31,159 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 12:15:31,159 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 205 treesize of output 199 [2022-11-16 12:15:32,007 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:15:32,007 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 94 treesize of output 70 [2022-11-16 12:15:32,039 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 12:15:32,040 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 407 treesize of output 391 [2022-11-16 12:15:32,068 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 12:15:32,069 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 387 treesize of output 363 [2022-11-16 12:15:32,095 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 12:15:32,096 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 359 treesize of output 307 [2022-11-16 12:15:32,126 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 12:15:32,127 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 209 treesize of output 199 [2022-11-16 12:15:32,841 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:15:32,841 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 49 [2022-11-16 12:15:32,871 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 12:15:32,873 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 255 treesize of output 247 [2022-11-16 12:15:32,901 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 12:15:32,901 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 243 treesize of output 215 [2022-11-16 12:15:32,931 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 12:15:32,932 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 211 treesize of output 199 [2022-11-16 12:15:32,957 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 12:15:32,958 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 101 treesize of output 97 [2022-11-16 12:15:33,300 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:15:33,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2037724925] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:15:33,301 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:15:33,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 28, 22] total 62 [2022-11-16 12:15:33,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134734326] [2022-11-16 12:15:33,302 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:15:33,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-11-16 12:15:33,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:15:33,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-11-16 12:15:33,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=527, Invalid=2979, Unknown=42, NotChecked=234, Total=3782 [2022-11-16 12:15:33,316 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 153 [2022-11-16 12:15:33,319 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 672 transitions, 4186 flow. Second operand has 62 states, 62 states have (on average 58.193548387096776) internal successors, (3608), 62 states have internal predecessors, (3608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:15:33,320 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:15:33,320 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 153 [2022-11-16 12:15:33,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:16:00,186 INFO L130 PetriNetUnfolder]: 18803/30114 cut-off events. [2022-11-16 12:16:00,186 INFO L131 PetriNetUnfolder]: For 203898/204246 co-relation queries the response was YES. [2022-11-16 12:16:00,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121141 conditions, 30114 events. 18803/30114 cut-off events. For 203898/204246 co-relation queries the response was YES. Maximal size of possible extension queue 1634. Compared 239316 event pairs, 2141 based on Foata normal form. 87/30013 useless extension candidates. Maximal degree in co-relation 121076. Up to 13672 conditions per place. [2022-11-16 12:16:00,749 INFO L137 encePairwiseOnDemand]: 111/153 looper letters, 797 selfloop transitions, 808 changer transitions 6/1659 dead transitions. [2022-11-16 12:16:00,750 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 1659 transitions, 14535 flow [2022-11-16 12:16:00,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-11-16 12:16:00,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2022-11-16 12:16:00,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 5076 transitions. [2022-11-16 12:16:00,768 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4147058823529412 [2022-11-16 12:16:00,768 INFO L72 ComplementDD]: Start complementDD. Operand 80 states and 5076 transitions. [2022-11-16 12:16:00,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 80 states and 5076 transitions. [2022-11-16 12:16:00,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:16:00,772 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 80 states and 5076 transitions. [2022-11-16 12:16:00,796 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 81 states, 80 states have (on average 63.45) internal successors, (5076), 80 states have internal predecessors, (5076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:00,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 81 states, 81 states have (on average 153.0) internal successors, (12393), 81 states have internal predecessors, (12393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:00,823 INFO L81 ComplementDD]: Finished complementDD. Result has 81 states, 81 states have (on average 153.0) internal successors, (12393), 81 states have internal predecessors, (12393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:00,823 INFO L175 Difference]: Start difference. First operand has 332 places, 672 transitions, 4186 flow. Second operand 80 states and 5076 transitions. [2022-11-16 12:16:00,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 1659 transitions, 14535 flow [2022-11-16 12:16:05,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 1659 transitions, 14292 flow, removed 64 selfloop flow, removed 15 redundant places. [2022-11-16 12:16:05,789 INFO L231 Difference]: Finished difference. Result has 434 places, 1242 transitions, 12074 flow [2022-11-16 12:16:05,790 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=4043, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=672, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=297, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=80, PETRI_FLOW=12074, PETRI_PLACES=434, PETRI_TRANSITIONS=1242} [2022-11-16 12:16:05,791 INFO L288 CegarLoopForPetriNet]: 137 programPoint places, 297 predicate places. [2022-11-16 12:16:05,791 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 1242 transitions, 12074 flow [2022-11-16 12:16:05,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 58.193548387096776) internal successors, (3608), 62 states have internal predecessors, (3608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:05,792 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:16:05,792 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] [2022-11-16 12:16:05,797 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee79936b-29ce-46f7-a2f7-71a3466cd0eb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-16 12:16:05,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee79936b-29ce-46f7-a2f7-71a3466cd0eb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:16:05,993 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)] === [2022-11-16 12:16:05,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:05,994 INFO L85 PathProgramCache]: Analyzing trace with hash 2033915204, now seen corresponding path program 3 times [2022-11-16 12:16:05,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:16:05,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944582576] [2022-11-16 12:16:05,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:05,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:16:06,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:08,291 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:08,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:16:08,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944582576] [2022-11-16 12:16:08,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944582576] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:16:08,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590494323] [2022-11-16 12:16:08,292 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 12:16:08,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:16:08,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee79936b-29ce-46f7-a2f7-71a3466cd0eb/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:16:08,294 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee79936b-29ce-46f7-a2f7-71a3466cd0eb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:16:08,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee79936b-29ce-46f7-a2f7-71a3466cd0eb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 12:16:08,432 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-16 12:16:08,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:16:08,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-16 12:16:08,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:16:09,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:16:09,846 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 [2022-11-16 12:16:10,192 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:16:10,192 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 63 treesize of output 43 [2022-11-16 12:16:10,932 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:16:10,933 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:16:12,028 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:16:12,029 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 159 treesize of output 147 [2022-11-16 12:16:12,051 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 88 treesize of output 76 [2022-11-16 12:16:12,059 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 76 treesize of output 70 [2022-11-16 12:16:13,828 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:16:13,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [590494323] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:16:13,829 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:16:13,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 23, 22] total 59 [2022-11-16 12:16:13,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232094144] [2022-11-16 12:16:13,829 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:16:13,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-11-16 12:16:13,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:16:13,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-11-16 12:16:13,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=371, Invalid=3042, Unknown=9, NotChecked=0, Total=3422 [2022-11-16 12:16:13,837 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 153 [2022-11-16 12:16:13,841 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 1242 transitions, 12074 flow. Second operand has 59 states, 59 states have (on average 57.28813559322034) internal successors, (3380), 59 states have internal predecessors, (3380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:16:13,841 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:16:13,842 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 153 [2022-11-16 12:16:13,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:16:58,876 INFO L130 PetriNetUnfolder]: 30589/50395 cut-off events. [2022-11-16 12:16:58,877 INFO L131 PetriNetUnfolder]: For 516302/517201 co-relation queries the response was YES. [2022-11-16 12:16:59,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 251674 conditions, 50395 events. 30589/50395 cut-off events. For 516302/517201 co-relation queries the response was YES. Maximal size of possible extension queue 2696. Compared 446027 event pairs, 1887 based on Foata normal form. 175/50381 useless extension candidates. Maximal degree in co-relation 251572. Up to 14908 conditions per place. [2022-11-16 12:17:00,171 INFO L137 encePairwiseOnDemand]: 110/153 looper letters, 1252 selfloop transitions, 2502 changer transitions 14/3813 dead transitions. [2022-11-16 12:17:00,173 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 583 places, 3813 transitions, 46303 flow [2022-11-16 12:17:00,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2022-11-16 12:17:00,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2022-11-16 12:17:00,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 9666 transitions. [2022-11-16 12:17:00,202 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4129181084198385 [2022-11-16 12:17:00,202 INFO L72 ComplementDD]: Start complementDD. Operand 153 states and 9666 transitions. [2022-11-16 12:17:00,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 153 states and 9666 transitions. [2022-11-16 12:17:00,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:17:00,207 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 153 states and 9666 transitions. [2022-11-16 12:17:00,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 154 states, 153 states have (on average 63.1764705882353) internal successors, (9666), 153 states have internal predecessors, (9666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:17:00,258 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 154 states, 154 states have (on average 153.0) internal successors, (23562), 154 states have internal predecessors, (23562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:17:00,267 INFO L81 ComplementDD]: Finished complementDD. Result has 154 states, 154 states have (on average 153.0) internal successors, (23562), 154 states have internal predecessors, (23562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:17:00,267 INFO L175 Difference]: Start difference. First operand has 434 places, 1242 transitions, 12074 flow. Second operand 153 states and 9666 transitions. [2022-11-16 12:17:00,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 583 places, 3813 transitions, 46303 flow [2022-11-16 12:17:55,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 559 places, 3813 transitions, 43682 flow, removed 1288 selfloop flow, removed 24 redundant places. [2022-11-16 12:17:55,811 INFO L231 Difference]: Finished difference. Result has 647 places, 2953 transitions, 38458 flow [2022-11-16 12:17:55,812 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=11145, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=884, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=153, PETRI_FLOW=38458, PETRI_PLACES=647, PETRI_TRANSITIONS=2953} [2022-11-16 12:17:55,813 INFO L288 CegarLoopForPetriNet]: 137 programPoint places, 510 predicate places. [2022-11-16 12:17:55,813 INFO L495 AbstractCegarLoop]: Abstraction has has 647 places, 2953 transitions, 38458 flow [2022-11-16 12:17:55,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 57.28813559322034) internal successors, (3380), 59 states have internal predecessors, (3380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:17:55,815 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:17:55,815 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] [2022-11-16 12:17:55,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee79936b-29ce-46f7-a2f7-71a3466cd0eb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 12:17:56,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee79936b-29ce-46f7-a2f7-71a3466cd0eb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-16 12:17:56,022 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)] === [2022-11-16 12:17:56,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:17:56,023 INFO L85 PathProgramCache]: Analyzing trace with hash -960470882, now seen corresponding path program 4 times [2022-11-16 12:17:56,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:17:56,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452797578] [2022-11-16 12:17:56,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:17:56,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:17:56,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:58,381 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:17:58,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:17:58,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452797578] [2022-11-16 12:17:58,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452797578] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:17:58,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787757548] [2022-11-16 12:17:58,382 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 12:17:58,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:17:58,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee79936b-29ce-46f7-a2f7-71a3466cd0eb/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:17:58,384 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee79936b-29ce-46f7-a2f7-71a3466cd0eb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:17:58,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee79936b-29ce-46f7-a2f7-71a3466cd0eb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 12:17:58,512 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 12:17:58,512 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:17:58,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-16 12:17:58,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:18:00,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:18:00,369 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 [2022-11-16 12:18:01,069 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:18:01,070 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 62 treesize of output 42 [2022-11-16 12:18:01,717 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:18:01,717 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:18:02,967 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:18:02,968 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 161 treesize of output 149 [2022-11-16 12:18:02,978 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 90 treesize of output 78 [2022-11-16 12:18:02,987 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 78 treesize of output 72 [2022-11-16 12:18:05,666 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:18:05,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [787757548] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:18:05,667 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:18:05,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 27, 27] total 67 [2022-11-16 12:18:05,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816458990] [2022-11-16 12:18:05,668 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:18:05,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2022-11-16 12:18:05,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:18:05,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2022-11-16 12:18:05,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=481, Invalid=3936, Unknown=5, NotChecked=0, Total=4422 [2022-11-16 12:18:05,675 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 153 [2022-11-16 12:18:05,677 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 647 places, 2953 transitions, 38458 flow. Second operand has 67 states, 67 states have (on average 63.791044776119406) internal successors, (4274), 67 states have internal predecessors, (4274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:18:05,678 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:18:05,678 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 153 [2022-11-16 12:18:05,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand