./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/thin002_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f3125f4-5cc4-425f-9174-eb7bef10bbbd/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f3125f4-5cc4-425f-9174-eb7bef10bbbd/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f3125f4-5cc4-425f-9174-eb7bef10bbbd/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f3125f4-5cc4-425f-9174-eb7bef10bbbd/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/thin002_pso.oepc_pso.opt_tso.oepc_tso.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f3125f4-5cc4-425f-9174-eb7bef10bbbd/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f3125f4-5cc4-425f-9174-eb7bef10bbbd/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 33fa46fe030c661ecf8ddae0fe7d2b7598ab4fcf90a09fe31211d00189cd239f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 18:38:03,967 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 18:38:03,969 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 18:38:03,995 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 18:38:03,996 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 18:38:03,997 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 18:38:03,998 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 18:38:04,000 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 18:38:04,002 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 18:38:04,004 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 18:38:04,005 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 18:38:04,006 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 18:38:04,006 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 18:38:04,007 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 18:38:04,009 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 18:38:04,010 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 18:38:04,011 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 18:38:04,012 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 18:38:04,014 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 18:38:04,015 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 18:38:04,017 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 18:38:04,018 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 18:38:04,020 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 18:38:04,021 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 18:38:04,024 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 18:38:04,025 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 18:38:04,025 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 18:38:04,026 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 18:38:04,026 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 18:38:04,027 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 18:38:04,028 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 18:38:04,029 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 18:38:04,029 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 18:38:04,030 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 18:38:04,031 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 18:38:04,032 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 18:38:04,032 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 18:38:04,033 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 18:38:04,033 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 18:38:04,034 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 18:38:04,035 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 18:38:04,036 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f3125f4-5cc4-425f-9174-eb7bef10bbbd/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 18:38:04,072 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 18:38:04,072 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 18:38:04,073 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 18:38:04,073 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 18:38:04,074 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 18:38:04,074 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 18:38:04,075 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 18:38:04,075 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 18:38:04,075 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 18:38:04,076 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 18:38:04,076 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 18:38:04,076 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 18:38:04,076 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 18:38:04,077 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 18:38:04,077 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 18:38:04,077 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 18:38:04,077 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 18:38:04,078 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 18:38:04,078 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 18:38:04,078 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 18:38:04,078 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 18:38:04,079 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 18:38:04,079 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 18:38:04,079 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 18:38:04,079 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:38:04,080 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 18:38:04,080 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 18:38:04,080 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 18:38:04,080 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 18:38:04,081 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 18:38:04,081 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 18:38:04,081 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 18:38:04,081 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 18:38:04,081 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_0f3125f4-5cc4-425f-9174-eb7bef10bbbd/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f3125f4-5cc4-425f-9174-eb7bef10bbbd/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 33fa46fe030c661ecf8ddae0fe7d2b7598ab4fcf90a09fe31211d00189cd239f [2022-11-18 18:38:04,322 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 18:38:04,356 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 18:38:04,358 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 18:38:04,359 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 18:38:04,360 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 18:38:04,362 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f3125f4-5cc4-425f-9174-eb7bef10bbbd/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/pthread-wmm/thin002_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-11-18 18:38:04,464 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f3125f4-5cc4-425f-9174-eb7bef10bbbd/bin/uautomizer-TMbwUNV5ro/data/ac9042ed3/301cf2b7c4354232a8858ce40e58f5ae/FLAGb369ecadc [2022-11-18 18:38:04,948 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 18:38:04,949 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f3125f4-5cc4-425f-9174-eb7bef10bbbd/sv-benchmarks/c/pthread-wmm/thin002_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-11-18 18:38:04,963 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f3125f4-5cc4-425f-9174-eb7bef10bbbd/bin/uautomizer-TMbwUNV5ro/data/ac9042ed3/301cf2b7c4354232a8858ce40e58f5ae/FLAGb369ecadc [2022-11-18 18:38:05,422 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f3125f4-5cc4-425f-9174-eb7bef10bbbd/bin/uautomizer-TMbwUNV5ro/data/ac9042ed3/301cf2b7c4354232a8858ce40e58f5ae [2022-11-18 18:38:05,425 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 18:38:05,426 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 18:38:05,429 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 18:38:05,429 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 18:38:05,433 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 18:38:05,434 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:38:05" (1/1) ... [2022-11-18 18:38:05,435 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3df5f8ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:05, skipping insertion in model container [2022-11-18 18:38:05,435 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:38:05" (1/1) ... [2022-11-18 18:38:05,442 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 18:38:05,494 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:38:05,714 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f3125f4-5cc4-425f-9174-eb7bef10bbbd/sv-benchmarks/c/pthread-wmm/thin002_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-11-18 18:38:05,896 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:38:05,904 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 18:38:05,917 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f3125f4-5cc4-425f-9174-eb7bef10bbbd/sv-benchmarks/c/pthread-wmm/thin002_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-11-18 18:38:05,946 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:38:05,980 INFO L208 MainTranslator]: Completed translation [2022-11-18 18:38:05,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:05 WrapperNode [2022-11-18 18:38:05,980 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 18:38:05,981 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 18:38:05,982 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 18:38:05,982 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 18:38:05,990 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:05" (1/1) ... [2022-11-18 18:38:06,031 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:05" (1/1) ... [2022-11-18 18:38:06,061 INFO L138 Inliner]: procedures = 177, calls = 66, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 85 [2022-11-18 18:38:06,062 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 18:38:06,063 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 18:38:06,063 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 18:38:06,063 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 18:38:06,072 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:05" (1/1) ... [2022-11-18 18:38:06,072 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:05" (1/1) ... [2022-11-18 18:38:06,086 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:05" (1/1) ... [2022-11-18 18:38:06,088 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:05" (1/1) ... [2022-11-18 18:38:06,093 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:05" (1/1) ... [2022-11-18 18:38:06,107 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:05" (1/1) ... [2022-11-18 18:38:06,109 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:05" (1/1) ... [2022-11-18 18:38:06,111 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:05" (1/1) ... [2022-11-18 18:38:06,113 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 18:38:06,122 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 18:38:06,123 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 18:38:06,123 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 18:38:06,124 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:05" (1/1) ... [2022-11-18 18:38:06,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:38:06,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f3125f4-5cc4-425f-9174-eb7bef10bbbd/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:38:06,164 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f3125f4-5cc4-425f-9174-eb7bef10bbbd/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 18:38:06,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f3125f4-5cc4-425f-9174-eb7bef10bbbd/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 18:38:06,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 18:38:06,219 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-18 18:38:06,220 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 18:38:06,220 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 18:38:06,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 18:38:06,220 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-11-18 18:38:06,220 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-11-18 18:38:06,220 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-11-18 18:38:06,221 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-11-18 18:38:06,222 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-11-18 18:38:06,222 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-11-18 18:38:06,222 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-11-18 18:38:06,222 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-11-18 18:38:06,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 18:38:06,222 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-18 18:38:06,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 18:38:06,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 18:38:06,225 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 18:38:06,432 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 18:38:06,434 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 18:38:06,647 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 18:38:06,654 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 18:38:06,654 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-18 18:38:06,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:38:06 BoogieIcfgContainer [2022-11-18 18:38:06,657 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 18:38:06,659 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 18:38:06,660 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 18:38:06,663 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 18:38:06,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:38:05" (1/3) ... [2022-11-18 18:38:06,665 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@694588cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:38:06, skipping insertion in model container [2022-11-18 18:38:06,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:05" (2/3) ... [2022-11-18 18:38:06,665 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@694588cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:38:06, skipping insertion in model container [2022-11-18 18:38:06,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:38:06" (3/3) ... [2022-11-18 18:38:06,672 INFO L112 eAbstractionObserver]: Analyzing ICFG thin002_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-11-18 18:38:06,681 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 18:38:06,692 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 18:38:06,692 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 18:38:06,693 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 18:38:06,801 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-18 18:38:06,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 122 places, 111 transitions, 242 flow [2022-11-18 18:38:06,979 INFO L130 PetriNetUnfolder]: 2/107 cut-off events. [2022-11-18 18:38:06,979 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 18:38:06,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120 conditions, 107 events. 2/107 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 56 event pairs, 0 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 85. Up to 2 conditions per place. [2022-11-18 18:38:06,985 INFO L82 GeneralOperation]: Start removeDead. Operand has 122 places, 111 transitions, 242 flow [2022-11-18 18:38:06,992 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 103 places, 91 transitions, 194 flow [2022-11-18 18:38:07,009 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:38:07,026 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;@147c2161, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:38:07,026 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-18 18:38:07,059 INFO L130 PetriNetUnfolder]: 1/90 cut-off events. [2022-11-18 18:38:07,059 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 18:38:07,060 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:38:07,060 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] [2022-11-18 18:38:07,061 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 2 more)] === [2022-11-18 18:38:07,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:07,067 INFO L85 PathProgramCache]: Analyzing trace with hash -541075316, now seen corresponding path program 1 times [2022-11-18 18:38:07,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:38:07,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065414056] [2022-11-18 18:38:07,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:07,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:38:07,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:08,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:08,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:38:08,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065414056] [2022-11-18 18:38:08,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065414056] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:38:08,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:38:08,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 18:38:08,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849974991] [2022-11-18 18:38:08,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:38:08,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:38:08,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:38:08,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:38:08,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:38:08,106 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 111 [2022-11-18 18:38:08,112 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 91 transitions, 194 flow. Second operand has 6 states, 6 states have (on average 91.33333333333333) internal successors, (548), 6 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:08,115 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:38:08,116 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 111 [2022-11-18 18:38:08,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:38:08,530 INFO L130 PetriNetUnfolder]: 287/787 cut-off events. [2022-11-18 18:38:08,531 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2022-11-18 18:38:08,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1284 conditions, 787 events. 287/787 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 4450 event pairs, 98 based on Foata normal form. 18/782 useless extension candidates. Maximal degree in co-relation 1242. Up to 276 conditions per place. [2022-11-18 18:38:08,540 INFO L137 encePairwiseOnDemand]: 101/111 looper letters, 20 selfloop transitions, 5 changer transitions 31/128 dead transitions. [2022-11-18 18:38:08,540 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 128 transitions, 389 flow [2022-11-18 18:38:08,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 18:38:08,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 18:38:08,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 861 transitions. [2022-11-18 18:38:08,557 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8618618618618619 [2022-11-18 18:38:08,576 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 861 transitions. [2022-11-18 18:38:08,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 861 transitions. [2022-11-18 18:38:08,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:38:08,584 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 861 transitions. [2022-11-18 18:38:08,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 95.66666666666667) internal successors, (861), 9 states have internal predecessors, (861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:08,599 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 111.0) internal successors, (1110), 10 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:08,600 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 111.0) internal successors, (1110), 10 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:08,602 INFO L175 Difference]: Start difference. First operand has 103 places, 91 transitions, 194 flow. Second operand 9 states and 861 transitions. [2022-11-18 18:38:08,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 128 transitions, 389 flow [2022-11-18 18:38:08,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 128 transitions, 382 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 18:38:08,610 INFO L231 Difference]: Finished difference. Result has 114 places, 94 transitions, 257 flow [2022-11-18 18:38:08,612 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=257, PETRI_PLACES=114, PETRI_TRANSITIONS=94} [2022-11-18 18:38:08,615 INFO L288 CegarLoopForPetriNet]: 103 programPoint places, 11 predicate places. [2022-11-18 18:38:08,616 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 94 transitions, 257 flow [2022-11-18 18:38:08,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 91.33333333333333) internal successors, (548), 6 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:08,616 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:38:08,617 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] [2022-11-18 18:38:08,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 18:38:08,617 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 2 more)] === [2022-11-18 18:38:08,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:08,618 INFO L85 PathProgramCache]: Analyzing trace with hash 391055595, now seen corresponding path program 1 times [2022-11-18 18:38:08,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:38:08,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364575764] [2022-11-18 18:38:08,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:08,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:38:08,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:08,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:08,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:38:08,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364575764] [2022-11-18 18:38:08,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364575764] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:38:08,919 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:38:08,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 18:38:08,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807657844] [2022-11-18 18:38:08,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:38:08,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 18:38:08,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:38:08,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 18:38:08,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 18:38:08,923 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 111 [2022-11-18 18:38:08,924 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 94 transitions, 257 flow. Second operand has 7 states, 7 states have (on average 91.14285714285714) internal successors, (638), 7 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:08,925 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:38:08,925 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 111 [2022-11-18 18:38:08,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:38:09,188 INFO L130 PetriNetUnfolder]: 187/527 cut-off events. [2022-11-18 18:38:09,188 INFO L131 PetriNetUnfolder]: For 1298/1523 co-relation queries the response was YES. [2022-11-18 18:38:09,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1821 conditions, 527 events. 187/527 cut-off events. For 1298/1523 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2411 event pairs, 13 based on Foata normal form. 14/516 useless extension candidates. Maximal degree in co-relation 1774. Up to 225 conditions per place. [2022-11-18 18:38:09,195 INFO L137 encePairwiseOnDemand]: 104/111 looper letters, 21 selfloop transitions, 4 changer transitions 28/125 dead transitions. [2022-11-18 18:38:09,195 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 125 transitions, 635 flow [2022-11-18 18:38:09,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 18:38:09,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-18 18:38:09,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 941 transitions. [2022-11-18 18:38:09,199 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8477477477477477 [2022-11-18 18:38:09,199 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 941 transitions. [2022-11-18 18:38:09,199 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 941 transitions. [2022-11-18 18:38:09,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:38:09,200 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 941 transitions. [2022-11-18 18:38:09,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 94.1) internal successors, (941), 10 states have internal predecessors, (941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:09,206 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 111.0) internal successors, (1221), 11 states have internal predecessors, (1221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:09,207 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 111.0) internal successors, (1221), 11 states have internal predecessors, (1221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:09,208 INFO L175 Difference]: Start difference. First operand has 114 places, 94 transitions, 257 flow. Second operand 10 states and 941 transitions. [2022-11-18 18:38:09,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 125 transitions, 635 flow [2022-11-18 18:38:09,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 125 transitions, 616 flow, removed 7 selfloop flow, removed 4 redundant places. [2022-11-18 18:38:09,216 INFO L231 Difference]: Finished difference. Result has 120 places, 94 transitions, 271 flow [2022-11-18 18:38:09,216 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=271, PETRI_PLACES=120, PETRI_TRANSITIONS=94} [2022-11-18 18:38:09,217 INFO L288 CegarLoopForPetriNet]: 103 programPoint places, 17 predicate places. [2022-11-18 18:38:09,217 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 94 transitions, 271 flow [2022-11-18 18:38:09,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 91.14285714285714) internal successors, (638), 7 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:09,218 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:38:09,218 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] [2022-11-18 18:38:09,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 18:38:09,219 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 2 more)] === [2022-11-18 18:38:09,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:09,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1808693069, now seen corresponding path program 1 times [2022-11-18 18:38:09,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:38:09,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898918250] [2022-11-18 18:38:09,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:09,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:38:09,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:09,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:09,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:38:09,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898918250] [2022-11-18 18:38:09,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898918250] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:38:09,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:38:09,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 18:38:09,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553517512] [2022-11-18 18:38:09,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:38:09,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 18:38:09,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:38:09,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 18:38:09,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 18:38:09,561 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 111 [2022-11-18 18:38:09,562 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 94 transitions, 271 flow. Second operand has 7 states, 7 states have (on average 89.28571428571429) internal successors, (625), 7 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:09,563 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:38:09,563 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 111 [2022-11-18 18:38:09,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:38:10,091 INFO L130 PetriNetUnfolder]: 282/759 cut-off events. [2022-11-18 18:38:10,091 INFO L131 PetriNetUnfolder]: For 2032/3004 co-relation queries the response was YES. [2022-11-18 18:38:10,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2615 conditions, 759 events. 282/759 cut-off events. For 2032/3004 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 4025 event pairs, 8 based on Foata normal form. 23/752 useless extension candidates. Maximal degree in co-relation 2561. Up to 284 conditions per place. [2022-11-18 18:38:10,101 INFO L137 encePairwiseOnDemand]: 100/111 looper letters, 29 selfloop transitions, 13 changer transitions 50/162 dead transitions. [2022-11-18 18:38:10,102 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 162 transitions, 984 flow [2022-11-18 18:38:10,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 18:38:10,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-18 18:38:10,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1572 transitions. [2022-11-18 18:38:10,106 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8330683624801272 [2022-11-18 18:38:10,106 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1572 transitions. [2022-11-18 18:38:10,106 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1572 transitions. [2022-11-18 18:38:10,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:38:10,108 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1572 transitions. [2022-11-18 18:38:10,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 92.47058823529412) internal successors, (1572), 17 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:10,117 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 111.0) internal successors, (1998), 18 states have internal predecessors, (1998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:10,118 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 111.0) internal successors, (1998), 18 states have internal predecessors, (1998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:10,118 INFO L175 Difference]: Start difference. First operand has 120 places, 94 transitions, 271 flow. Second operand 17 states and 1572 transitions. [2022-11-18 18:38:10,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 162 transitions, 984 flow [2022-11-18 18:38:10,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 162 transitions, 918 flow, removed 28 selfloop flow, removed 9 redundant places. [2022-11-18 18:38:10,134 INFO L231 Difference]: Finished difference. Result has 136 places, 101 transitions, 432 flow [2022-11-18 18:38:10,135 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=432, PETRI_PLACES=136, PETRI_TRANSITIONS=101} [2022-11-18 18:38:10,137 INFO L288 CegarLoopForPetriNet]: 103 programPoint places, 33 predicate places. [2022-11-18 18:38:10,137 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 101 transitions, 432 flow [2022-11-18 18:38:10,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 89.28571428571429) internal successors, (625), 7 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:10,138 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:38:10,139 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] [2022-11-18 18:38:10,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 18:38:10,139 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 2 more)] === [2022-11-18 18:38:10,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:10,140 INFO L85 PathProgramCache]: Analyzing trace with hash -682680628, now seen corresponding path program 1 times [2022-11-18 18:38:10,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:38:10,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842534358] [2022-11-18 18:38:10,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:10,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:38:10,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:10,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:10,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:38:10,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842534358] [2022-11-18 18:38:10,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842534358] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:38:10,392 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:38:10,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 18:38:10,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949408796] [2022-11-18 18:38:10,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:38:10,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 18:38:10,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:38:10,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 18:38:10,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 18:38:10,396 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 111 [2022-11-18 18:38:10,397 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 101 transitions, 432 flow. Second operand has 7 states, 7 states have (on average 94.85714285714286) internal successors, (664), 7 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:10,397 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:38:10,397 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 111 [2022-11-18 18:38:10,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:38:10,649 INFO L130 PetriNetUnfolder]: 97/460 cut-off events. [2022-11-18 18:38:10,649 INFO L131 PetriNetUnfolder]: For 4202/5309 co-relation queries the response was YES. [2022-11-18 18:38:10,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1938 conditions, 460 events. 97/460 cut-off events. For 4202/5309 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2370 event pairs, 13 based on Foata normal form. 18/450 useless extension candidates. Maximal degree in co-relation 1877. Up to 125 conditions per place. [2022-11-18 18:38:10,656 INFO L137 encePairwiseOnDemand]: 103/111 looper letters, 11 selfloop transitions, 4 changer transitions 19/113 dead transitions. [2022-11-18 18:38:10,656 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 113 transitions, 581 flow [2022-11-18 18:38:10,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 18:38:10,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-18 18:38:10,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 959 transitions. [2022-11-18 18:38:10,660 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8639639639639639 [2022-11-18 18:38:10,660 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 959 transitions. [2022-11-18 18:38:10,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 959 transitions. [2022-11-18 18:38:10,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:38:10,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 959 transitions. [2022-11-18 18:38:10,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 95.9) internal successors, (959), 10 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:10,672 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 111.0) internal successors, (1221), 11 states have internal predecessors, (1221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:10,673 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 111.0) internal successors, (1221), 11 states have internal predecessors, (1221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:10,673 INFO L175 Difference]: Start difference. First operand has 136 places, 101 transitions, 432 flow. Second operand 10 states and 959 transitions. [2022-11-18 18:38:10,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 113 transitions, 581 flow [2022-11-18 18:38:10,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 113 transitions, 458 flow, removed 58 selfloop flow, removed 13 redundant places. [2022-11-18 18:38:10,688 INFO L231 Difference]: Finished difference. Result has 128 places, 93 transitions, 312 flow [2022-11-18 18:38:10,695 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=312, PETRI_PLACES=128, PETRI_TRANSITIONS=93} [2022-11-18 18:38:10,697 INFO L288 CegarLoopForPetriNet]: 103 programPoint places, 25 predicate places. [2022-11-18 18:38:10,697 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 93 transitions, 312 flow [2022-11-18 18:38:10,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 94.85714285714286) internal successors, (664), 7 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:10,698 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:38:10,698 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] [2022-11-18 18:38:10,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 18:38:10,699 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 2 more)] === [2022-11-18 18:38:10,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:10,699 INFO L85 PathProgramCache]: Analyzing trace with hash -691436948, now seen corresponding path program 1 times [2022-11-18 18:38:10,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:38:10,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134667190] [2022-11-18 18:38:10,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:10,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:38:10,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:10,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:10,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:38:10,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134667190] [2022-11-18 18:38:10,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134667190] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:38:10,980 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:38:10,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 18:38:10,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653265102] [2022-11-18 18:38:10,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:38:10,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 18:38:10,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:38:10,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 18:38:10,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 18:38:10,982 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 111 [2022-11-18 18:38:10,983 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 93 transitions, 312 flow. Second operand has 7 states, 7 states have (on average 91.28571428571429) internal successors, (639), 7 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) [2022-11-18 18:38:10,984 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:38:10,984 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 111 [2022-11-18 18:38:10,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:38:11,184 INFO L130 PetriNetUnfolder]: 45/258 cut-off events. [2022-11-18 18:38:11,185 INFO L131 PetriNetUnfolder]: For 730/870 co-relation queries the response was YES. [2022-11-18 18:38:11,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 829 conditions, 258 events. 45/258 cut-off events. For 730/870 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 925 event pairs, 12 based on Foata normal form. 4/251 useless extension candidates. Maximal degree in co-relation 790. Up to 63 conditions per place. [2022-11-18 18:38:11,188 INFO L137 encePairwiseOnDemand]: 104/111 looper letters, 23 selfloop transitions, 4 changer transitions 16/115 dead transitions. [2022-11-18 18:38:11,188 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 115 transitions, 628 flow [2022-11-18 18:38:11,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 18:38:11,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-18 18:38:11,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 932 transitions. [2022-11-18 18:38:11,192 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8396396396396396 [2022-11-18 18:38:11,192 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 932 transitions. [2022-11-18 18:38:11,192 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 932 transitions. [2022-11-18 18:38:11,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:38:11,193 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 932 transitions. [2022-11-18 18:38:11,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 93.2) internal successors, (932), 10 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:11,198 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 111.0) internal successors, (1221), 11 states have internal predecessors, (1221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:11,199 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 111.0) internal successors, (1221), 11 states have internal predecessors, (1221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:11,200 INFO L175 Difference]: Start difference. First operand has 128 places, 93 transitions, 312 flow. Second operand 10 states and 932 transitions. [2022-11-18 18:38:11,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 115 transitions, 628 flow [2022-11-18 18:38:11,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 115 transitions, 496 flow, removed 50 selfloop flow, removed 16 redundant places. [2022-11-18 18:38:11,207 INFO L231 Difference]: Finished difference. Result has 122 places, 93 transitions, 275 flow [2022-11-18 18:38:11,208 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=275, PETRI_PLACES=122, PETRI_TRANSITIONS=93} [2022-11-18 18:38:11,211 INFO L288 CegarLoopForPetriNet]: 103 programPoint places, 19 predicate places. [2022-11-18 18:38:11,211 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 93 transitions, 275 flow [2022-11-18 18:38:11,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 91.28571428571429) internal successors, (639), 7 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) [2022-11-18 18:38:11,212 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:38:11,212 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] [2022-11-18 18:38:11,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 18:38:11,213 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 2 more)] === [2022-11-18 18:38:11,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:11,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1268895565, now seen corresponding path program 1 times [2022-11-18 18:38:11,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:38:11,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062228312] [2022-11-18 18:38:11,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:11,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:38:11,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:11,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:11,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:38:11,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062228312] [2022-11-18 18:38:11,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062228312] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:38:11,460 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:38:11,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 18:38:11,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694327294] [2022-11-18 18:38:11,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:38:11,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 18:38:11,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:38:11,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 18:38:11,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 18:38:11,463 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 111 [2022-11-18 18:38:11,464 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 93 transitions, 275 flow. Second operand has 7 states, 7 states have (on average 91.42857142857143) internal successors, (640), 7 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:11,464 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:38:11,465 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 111 [2022-11-18 18:38:11,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:38:11,624 INFO L130 PetriNetUnfolder]: 29/222 cut-off events. [2022-11-18 18:38:11,625 INFO L131 PetriNetUnfolder]: For 254/296 co-relation queries the response was YES. [2022-11-18 18:38:11,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 544 conditions, 222 events. 29/222 cut-off events. For 254/296 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 741 event pairs, 5 based on Foata normal form. 2/214 useless extension candidates. Maximal degree in co-relation 523. Up to 44 conditions per place. [2022-11-18 18:38:11,627 INFO L137 encePairwiseOnDemand]: 104/111 looper letters, 22 selfloop transitions, 4 changer transitions 10/108 dead transitions. [2022-11-18 18:38:11,627 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 108 transitions, 464 flow [2022-11-18 18:38:11,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 18:38:11,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-18 18:38:11,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 925 transitions. [2022-11-18 18:38:11,631 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8333333333333334 [2022-11-18 18:38:11,631 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 925 transitions. [2022-11-18 18:38:11,631 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 925 transitions. [2022-11-18 18:38:11,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:38:11,632 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 925 transitions. [2022-11-18 18:38:11,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 92.5) internal successors, (925), 10 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:11,637 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 111.0) internal successors, (1221), 11 states have internal predecessors, (1221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:11,638 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 111.0) internal successors, (1221), 11 states have internal predecessors, (1221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:11,638 INFO L175 Difference]: Start difference. First operand has 122 places, 93 transitions, 275 flow. Second operand 10 states and 925 transitions. [2022-11-18 18:38:11,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 108 transitions, 464 flow [2022-11-18 18:38:11,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 108 transitions, 426 flow, removed 14 selfloop flow, removed 9 redundant places. [2022-11-18 18:38:11,642 INFO L231 Difference]: Finished difference. Result has 123 places, 93 transitions, 280 flow [2022-11-18 18:38:11,643 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=280, PETRI_PLACES=123, PETRI_TRANSITIONS=93} [2022-11-18 18:38:11,644 INFO L288 CegarLoopForPetriNet]: 103 programPoint places, 20 predicate places. [2022-11-18 18:38:11,644 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 93 transitions, 280 flow [2022-11-18 18:38:11,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 91.42857142857143) internal successors, (640), 7 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:11,645 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:38:11,645 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] [2022-11-18 18:38:11,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 18:38:11,645 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 2 more)] === [2022-11-18 18:38:11,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:11,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1947747096, now seen corresponding path program 1 times [2022-11-18 18:38:11,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:38:11,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425819800] [2022-11-18 18:38:11,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:11,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:38:11,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:11,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:11,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:38:11,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425819800] [2022-11-18 18:38:11,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425819800] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:38:11,930 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:38:11,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 18:38:11,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316861615] [2022-11-18 18:38:11,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:38:11,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 18:38:11,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:38:11,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 18:38:11,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:38:11,935 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 111 [2022-11-18 18:38:11,936 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 93 transitions, 280 flow. Second operand has 8 states, 8 states have (on average 89.375) internal successors, (715), 8 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:11,936 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:38:11,936 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 111 [2022-11-18 18:38:11,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:38:12,144 INFO L130 PetriNetUnfolder]: 33/233 cut-off events. [2022-11-18 18:38:12,145 INFO L131 PetriNetUnfolder]: For 311/381 co-relation queries the response was YES. [2022-11-18 18:38:12,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 598 conditions, 233 events. 33/233 cut-off events. For 311/381 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 803 event pairs, 14 based on Foata normal form. 4/225 useless extension candidates. Maximal degree in co-relation 576. Up to 56 conditions per place. [2022-11-18 18:38:12,147 INFO L137 encePairwiseOnDemand]: 102/111 looper letters, 19 selfloop transitions, 5 changer transitions 13/107 dead transitions. [2022-11-18 18:38:12,147 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 107 transitions, 453 flow [2022-11-18 18:38:12,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 18:38:12,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-18 18:38:12,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1080 transitions. [2022-11-18 18:38:12,151 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8108108108108109 [2022-11-18 18:38:12,151 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1080 transitions. [2022-11-18 18:38:12,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1080 transitions. [2022-11-18 18:38:12,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:38:12,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1080 transitions. [2022-11-18 18:38:12,155 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 90.0) internal successors, (1080), 12 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:12,157 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 111.0) internal successors, (1443), 13 states have internal predecessors, (1443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:12,158 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 111.0) internal successors, (1443), 13 states have internal predecessors, (1443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:12,158 INFO L175 Difference]: Start difference. First operand has 123 places, 93 transitions, 280 flow. Second operand 12 states and 1080 transitions. [2022-11-18 18:38:12,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 107 transitions, 453 flow [2022-11-18 18:38:12,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 107 transitions, 399 flow, removed 21 selfloop flow, removed 9 redundant places. [2022-11-18 18:38:12,162 INFO L231 Difference]: Finished difference. Result has 127 places, 92 transitions, 279 flow [2022-11-18 18:38:12,163 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=279, PETRI_PLACES=127, PETRI_TRANSITIONS=92} [2022-11-18 18:38:12,163 INFO L288 CegarLoopForPetriNet]: 103 programPoint places, 24 predicate places. [2022-11-18 18:38:12,164 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 92 transitions, 279 flow [2022-11-18 18:38:12,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 89.375) internal successors, (715), 8 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:12,164 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:38:12,164 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] [2022-11-18 18:38:12,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 18:38:12,165 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 2 more)] === [2022-11-18 18:38:12,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:12,166 INFO L85 PathProgramCache]: Analyzing trace with hash 640721194, now seen corresponding path program 1 times [2022-11-18 18:38:12,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:38:12,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125328664] [2022-11-18 18:38:12,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:12,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:38:12,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:12,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:12,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:38:12,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125328664] [2022-11-18 18:38:12,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125328664] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:38:12,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:38:12,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 18:38:12,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495905547] [2022-11-18 18:38:12,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:38:12,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 18:38:12,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:38:12,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 18:38:12,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:38:12,437 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 111 [2022-11-18 18:38:12,438 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 92 transitions, 279 flow. Second operand has 8 states, 8 states have (on average 89.375) internal successors, (715), 8 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:12,441 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:38:12,441 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 111 [2022-11-18 18:38:12,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:38:12,602 INFO L130 PetriNetUnfolder]: 12/152 cut-off events. [2022-11-18 18:38:12,602 INFO L131 PetriNetUnfolder]: For 181/195 co-relation queries the response was YES. [2022-11-18 18:38:12,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 345 conditions, 152 events. 12/152 cut-off events. For 181/195 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 335 event pairs, 4 based on Foata normal form. 4/151 useless extension candidates. Maximal degree in co-relation 322. Up to 24 conditions per place. [2022-11-18 18:38:12,607 INFO L137 encePairwiseOnDemand]: 102/111 looper letters, 15 selfloop transitions, 5 changer transitions 15/104 dead transitions. [2022-11-18 18:38:12,608 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 104 transitions, 420 flow [2022-11-18 18:38:12,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 18:38:12,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 18:38:12,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 991 transitions. [2022-11-18 18:38:12,611 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8116298116298116 [2022-11-18 18:38:12,611 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 991 transitions. [2022-11-18 18:38:12,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 991 transitions. [2022-11-18 18:38:12,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:38:12,612 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 991 transitions. [2022-11-18 18:38:12,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 90.0909090909091) internal successors, (991), 11 states have internal predecessors, (991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:12,618 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 111.0) internal successors, (1332), 12 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:12,619 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 111.0) internal successors, (1332), 12 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:12,619 INFO L175 Difference]: Start difference. First operand has 127 places, 92 transitions, 279 flow. Second operand 11 states and 991 transitions. [2022-11-18 18:38:12,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 104 transitions, 420 flow [2022-11-18 18:38:12,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 104 transitions, 330 flow, removed 38 selfloop flow, removed 16 redundant places. [2022-11-18 18:38:12,623 INFO L231 Difference]: Finished difference. Result has 123 places, 89 transitions, 244 flow [2022-11-18 18:38:12,623 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=244, PETRI_PLACES=123, PETRI_TRANSITIONS=89} [2022-11-18 18:38:12,625 INFO L288 CegarLoopForPetriNet]: 103 programPoint places, 20 predicate places. [2022-11-18 18:38:12,626 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 89 transitions, 244 flow [2022-11-18 18:38:12,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 89.375) internal successors, (715), 8 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:12,626 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:38:12,627 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] [2022-11-18 18:38:12,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 18:38:12,627 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 2 more)] === [2022-11-18 18:38:12,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:12,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1701606074, now seen corresponding path program 1 times [2022-11-18 18:38:12,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:38:12,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213610633] [2022-11-18 18:38:12,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:12,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:38:12,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:12,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:12,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:38:12,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213610633] [2022-11-18 18:38:12,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213610633] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:38:12,866 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:38:12,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 18:38:12,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224563198] [2022-11-18 18:38:12,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:38:12,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 18:38:12,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:38:12,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 18:38:12,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 18:38:12,870 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 111 [2022-11-18 18:38:12,871 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 89 transitions, 244 flow. Second operand has 7 states, 7 states have (on average 94.85714285714286) internal successors, (664), 7 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:12,871 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:38:12,871 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 111 [2022-11-18 18:38:12,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:38:13,022 INFO L130 PetriNetUnfolder]: 5/102 cut-off events. [2022-11-18 18:38:13,024 INFO L131 PetriNetUnfolder]: For 44/44 co-relation queries the response was YES. [2022-11-18 18:38:13,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 102 events. 5/102 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 87 event pairs, 1 based on Foata normal form. 2/103 useless extension candidates. Maximal degree in co-relation 173. Up to 8 conditions per place. [2022-11-18 18:38:13,025 INFO L137 encePairwiseOnDemand]: 104/111 looper letters, 0 selfloop transitions, 0 changer transitions 94/94 dead transitions. [2022-11-18 18:38:13,025 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 94 transitions, 308 flow [2022-11-18 18:38:13,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 18:38:13,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-18 18:38:13,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 952 transitions. [2022-11-18 18:38:13,028 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8576576576576577 [2022-11-18 18:38:13,028 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 952 transitions. [2022-11-18 18:38:13,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 952 transitions. [2022-11-18 18:38:13,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:38:13,029 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 952 transitions. [2022-11-18 18:38:13,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 95.2) internal successors, (952), 10 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:13,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 111.0) internal successors, (1221), 11 states have internal predecessors, (1221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:13,035 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 111.0) internal successors, (1221), 11 states have internal predecessors, (1221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:13,036 INFO L175 Difference]: Start difference. First operand has 123 places, 89 transitions, 244 flow. Second operand 10 states and 952 transitions. [2022-11-18 18:38:13,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 94 transitions, 308 flow [2022-11-18 18:38:13,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 94 transitions, 268 flow, removed 13 selfloop flow, removed 10 redundant places. [2022-11-18 18:38:13,038 INFO L231 Difference]: Finished difference. Result has 113 places, 0 transitions, 0 flow [2022-11-18 18:38:13,038 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=113, PETRI_TRANSITIONS=0} [2022-11-18 18:38:13,039 INFO L288 CegarLoopForPetriNet]: 103 programPoint places, 10 predicate places. [2022-11-18 18:38:13,039 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 0 transitions, 0 flow [2022-11-18 18:38:13,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 94.85714285714286) internal successors, (664), 7 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:13,044 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2022-11-18 18:38:13,045 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2022-11-18 18:38:13,045 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2022-11-18 18:38:13,046 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2022-11-18 18:38:13,046 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2022-11-18 18:38:13,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 18:38:13,046 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:38:13,051 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-18 18:38:13,051 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-18 18:38:13,064 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 06:38:13 BasicIcfg [2022-11-18 18:38:13,064 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-18 18:38:13,065 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-18 18:38:13,065 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-18 18:38:13,065 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-18 18:38:13,066 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:38:06" (3/4) ... [2022-11-18 18:38:13,069 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-18 18:38:13,076 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-11-18 18:38:13,076 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-11-18 18:38:13,076 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2022-11-18 18:38:13,076 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2022-11-18 18:38:13,082 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2022-11-18 18:38:13,082 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-18 18:38:13,083 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-18 18:38:13,083 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-18 18:38:13,129 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f3125f4-5cc4-425f-9174-eb7bef10bbbd/bin/uautomizer-TMbwUNV5ro/witness.graphml [2022-11-18 18:38:13,129 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-18 18:38:13,130 INFO L158 Benchmark]: Toolchain (without parser) took 7703.55ms. Allocated memory was 100.7MB in the beginning and 218.1MB in the end (delta: 117.4MB). Free memory was 55.0MB in the beginning and 94.3MB in the end (delta: -39.3MB). Peak memory consumption was 78.8MB. Max. memory is 16.1GB. [2022-11-18 18:38:13,130 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 100.7MB. Free memory is still 73.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 18:38:13,131 INFO L158 Benchmark]: CACSL2BoogieTranslator took 551.90ms. Allocated memory is still 100.7MB. Free memory was 54.8MB in the beginning and 64.8MB in the end (delta: -10.0MB). Peak memory consumption was 6.7MB. Max. memory is 16.1GB. [2022-11-18 18:38:13,131 INFO L158 Benchmark]: Boogie Procedure Inliner took 80.68ms. Allocated memory is still 100.7MB. Free memory was 64.8MB in the beginning and 62.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 18:38:13,131 INFO L158 Benchmark]: Boogie Preprocessor took 58.80ms. Allocated memory is still 100.7MB. Free memory was 62.7MB in the beginning and 61.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 18:38:13,132 INFO L158 Benchmark]: RCFGBuilder took 535.18ms. Allocated memory is still 100.7MB. Free memory was 61.0MB in the beginning and 46.7MB in the end (delta: 14.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-18 18:38:13,132 INFO L158 Benchmark]: TraceAbstraction took 6404.85ms. Allocated memory was 100.7MB in the beginning and 218.1MB in the end (delta: 117.4MB). Free memory was 46.0MB in the beginning and 97.4MB in the end (delta: -51.4MB). Peak memory consumption was 67.7MB. Max. memory is 16.1GB. [2022-11-18 18:38:13,133 INFO L158 Benchmark]: Witness Printer took 64.40ms. Allocated memory is still 218.1MB. Free memory was 97.4MB in the beginning and 94.3MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-18 18:38:13,135 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 100.7MB. Free memory is still 73.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 551.90ms. Allocated memory is still 100.7MB. Free memory was 54.8MB in the beginning and 64.8MB in the end (delta: -10.0MB). Peak memory consumption was 6.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 80.68ms. Allocated memory is still 100.7MB. Free memory was 64.8MB in the beginning and 62.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 58.80ms. Allocated memory is still 100.7MB. Free memory was 62.7MB in the beginning and 61.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 535.18ms. Allocated memory is still 100.7MB. Free memory was 61.0MB in the beginning and 46.7MB in the end (delta: 14.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 6404.85ms. Allocated memory was 100.7MB in the beginning and 218.1MB in the end (delta: 117.4MB). Free memory was 46.0MB in the beginning and 97.4MB in the end (delta: -51.4MB). Peak memory consumption was 67.7MB. Max. memory is 16.1GB. * Witness Printer took 64.40ms. Allocated memory is still 218.1MB. Free memory was 97.4MB in the beginning and 94.3MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 142 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 6.2s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 353 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 353 mSDsluCounter, 596 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 447 mSDsCounter, 25 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 462 IncrementalHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 25 mSolverCounterUnsat, 149 mSDtfsCounter, 462 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 125 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=432occurred in iteration=3, InterpolantAutomatonStates: 99, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 635 NumberOfCodeBlocks, 635 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 626 ConstructedInterpolants, 0 QuantifiedInterpolants, 3182 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-18 18:38:13,171 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f3125f4-5cc4-425f-9174-eb7bef10bbbd/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE