./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe009_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac272c7-bbc9-4e55-bb77-ad4002133f3a/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac272c7-bbc9-4e55-bb77-ad4002133f3a/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac272c7-bbc9-4e55-bb77-ad4002133f3a/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac272c7-bbc9-4e55-bb77-ad4002133f3a/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe009_pso.oepc_pso.opt_tso.oepc_tso.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac272c7-bbc9-4e55-bb77-ad4002133f3a/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac272c7-bbc9-4e55-bb77-ad4002133f3a/bin/uautomizer-Dbtcem3rbc --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 e02ca79ae11b312cb156178ccd52c5da7b51884a938996d16b5a625457869bce --- 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-5e519f3 [2022-11-02 20:48:22,825 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:48:22,828 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:48:22,877 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:48:22,877 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:48:22,881 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:48:22,884 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:48:22,887 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:48:22,890 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:48:22,895 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:48:22,896 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:48:22,899 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:48:22,899 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:48:22,901 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:48:22,903 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:48:22,905 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:48:22,907 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:48:22,908 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:48:22,909 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:48:22,918 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:48:22,919 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:48:22,921 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:48:22,924 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:48:22,925 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:48:22,934 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:48:22,934 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:48:22,935 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:48:22,937 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:48:22,937 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:48:22,940 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:48:22,940 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:48:22,941 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:48:22,943 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:48:22,945 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:48:22,946 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:48:22,946 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:48:22,947 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:48:22,947 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:48:22,947 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:48:22,948 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:48:22,949 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:48:22,950 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac272c7-bbc9-4e55-bb77-ad4002133f3a/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:48:22,987 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:48:22,987 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:48:22,987 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:48:22,988 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:48:22,989 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:48:22,989 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:48:22,989 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:48:22,990 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:48:22,990 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:48:22,990 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:48:22,991 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:48:22,991 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:48:22,992 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:48:22,992 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:48:22,992 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:48:22,992 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:48:22,992 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:48:22,992 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:48:22,993 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:48:22,993 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:48:22,993 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:48:22,993 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:48:22,993 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:48:22,993 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:48:22,994 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:48:22,994 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:48:22,994 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:48:22,994 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:48:22,995 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:48:22,995 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:48:22,995 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:48:22,995 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:48:22,996 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:48:22,996 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_6ac272c7-bbc9-4e55-bb77-ad4002133f3a/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac272c7-bbc9-4e55-bb77-ad4002133f3a/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e02ca79ae11b312cb156178ccd52c5da7b51884a938996d16b5a625457869bce [2022-11-02 20:48:23,340 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:48:23,369 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:48:23,372 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:48:23,373 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:48:23,374 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:48:23,376 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac272c7-bbc9-4e55-bb77-ad4002133f3a/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/pthread-wmm/safe009_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-11-02 20:48:23,456 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac272c7-bbc9-4e55-bb77-ad4002133f3a/bin/uautomizer-Dbtcem3rbc/data/bfb74a2fd/c66d88e46f0f495293171f34643e2c65/FLAG7960f1413 [2022-11-02 20:48:23,997 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:48:24,003 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac272c7-bbc9-4e55-bb77-ad4002133f3a/sv-benchmarks/c/pthread-wmm/safe009_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-11-02 20:48:24,020 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac272c7-bbc9-4e55-bb77-ad4002133f3a/bin/uautomizer-Dbtcem3rbc/data/bfb74a2fd/c66d88e46f0f495293171f34643e2c65/FLAG7960f1413 [2022-11-02 20:48:24,324 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac272c7-bbc9-4e55-bb77-ad4002133f3a/bin/uautomizer-Dbtcem3rbc/data/bfb74a2fd/c66d88e46f0f495293171f34643e2c65 [2022-11-02 20:48:24,326 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:48:24,329 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:48:24,335 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:48:24,335 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:48:24,338 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:48:24,338 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:48:24" (1/1) ... [2022-11-02 20:48:24,339 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@326a099d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:48:24, skipping insertion in model container [2022-11-02 20:48:24,340 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:48:24" (1/1) ... [2022-11-02 20:48:24,347 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:48:24,393 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:48:24,629 WARN L230 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_6ac272c7-bbc9-4e55-bb77-ad4002133f3a/sv-benchmarks/c/pthread-wmm/safe009_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-11-02 20:48:24,885 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:48:24,900 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:48:24,915 WARN L230 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_6ac272c7-bbc9-4e55-bb77-ad4002133f3a/sv-benchmarks/c/pthread-wmm/safe009_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-11-02 20:48:24,966 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:48:25,009 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:48:25,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:48:25 WrapperNode [2022-11-02 20:48:25,010 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:48:25,011 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:48:25,011 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:48:25,011 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:48:25,019 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:48:25" (1/1) ... [2022-11-02 20:48:25,049 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:48:25" (1/1) ... [2022-11-02 20:48:25,081 INFO L138 Inliner]: procedures = 176, calls = 51, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2022-11-02 20:48:25,081 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:48:25,082 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:48:25,083 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:48:25,083 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:48:25,091 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:48:25" (1/1) ... [2022-11-02 20:48:25,092 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:48:25" (1/1) ... [2022-11-02 20:48:25,108 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:48:25" (1/1) ... [2022-11-02 20:48:25,108 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:48:25" (1/1) ... [2022-11-02 20:48:25,113 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:48:25" (1/1) ... [2022-11-02 20:48:25,115 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:48:25" (1/1) ... [2022-11-02 20:48:25,116 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:48:25" (1/1) ... [2022-11-02 20:48:25,117 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:48:25" (1/1) ... [2022-11-02 20:48:25,119 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:48:25,120 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:48:25,120 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:48:25,120 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:48:25,134 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:48:25" (1/1) ... [2022-11-02 20:48:25,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:48:25,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac272c7-bbc9-4e55-bb77-ad4002133f3a/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:48:25,179 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac272c7-bbc9-4e55-bb77-ad4002133f3a/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:48:25,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac272c7-bbc9-4e55-bb77-ad4002133f3a/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:48:25,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:48:25,226 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-02 20:48:25,226 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:48:25,226 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:48:25,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:48:25,226 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-11-02 20:48:25,226 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-11-02 20:48:25,227 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-11-02 20:48:25,227 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-11-02 20:48:25,228 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-11-02 20:48:25,228 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-11-02 20:48:25,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:48:25,228 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-02 20:48:25,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:48:25,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:48:25,230 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-02 20:48:25,411 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:48:25,413 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:48:25,593 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:48:25,599 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:48:25,600 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-02 20:48:25,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:48:25 BoogieIcfgContainer [2022-11-02 20:48:25,603 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:48:25,605 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:48:25,605 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:48:25,609 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:48:25,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:48:24" (1/3) ... [2022-11-02 20:48:25,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43f4d86c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:48:25, skipping insertion in model container [2022-11-02 20:48:25,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:48:25" (2/3) ... [2022-11-02 20:48:25,611 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43f4d86c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:48:25, skipping insertion in model container [2022-11-02 20:48:25,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:48:25" (3/3) ... [2022-11-02 20:48:25,619 INFO L112 eAbstractionObserver]: Analyzing ICFG safe009_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-11-02 20:48:25,630 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:48:25,642 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:48:25,642 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:48:25,642 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:48:25,745 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-02 20:48:25,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 98 places, 90 transitions, 195 flow [2022-11-02 20:48:25,879 INFO L130 PetriNetUnfolder]: 2/87 cut-off events. [2022-11-02 20:48:25,879 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:48:25,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 87 events. 2/87 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2022-11-02 20:48:25,882 INFO L82 GeneralOperation]: Start removeDead. Operand has 98 places, 90 transitions, 195 flow [2022-11-02 20:48:25,895 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 73 transitions, 155 flow [2022-11-02 20:48:25,904 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:48:25,910 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;@44fb15b5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:48:25,911 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-02 20:48:25,932 INFO L130 PetriNetUnfolder]: 1/72 cut-off events. [2022-11-02 20:48:25,932 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:48:25,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:48:25,933 INFO L208 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] [2022-11-02 20:48:25,933 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:48:25,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:48:25,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1346493370, now seen corresponding path program 1 times [2022-11-02 20:48:25,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:48:25,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286721343] [2022-11-02 20:48:25,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:48:25,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:48:26,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:48:26,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:48:26,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:48:26,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286721343] [2022-11-02 20:48:26,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286721343] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:48:26,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:48:26,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:48:26,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797275429] [2022-11-02 20:48:26,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:48:26,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:48:26,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:48:26,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:48:26,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:48:26,819 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 90 [2022-11-02 20:48:26,823 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 73 transitions, 155 flow. Second operand has 6 states, 6 states have (on average 72.0) internal successors, (432), 6 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:26,823 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:48:26,823 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 90 [2022-11-02 20:48:26,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:48:27,334 INFO L130 PetriNetUnfolder]: 185/602 cut-off events. [2022-11-02 20:48:27,335 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-11-02 20:48:27,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 970 conditions, 602 events. 185/602 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3487 event pairs, 44 based on Foata normal form. 21/608 useless extension candidates. Maximal degree in co-relation 934. Up to 155 conditions per place. [2022-11-02 20:48:27,342 INFO L137 encePairwiseOnDemand]: 80/90 looper letters, 20 selfloop transitions, 5 changer transitions 28/109 dead transitions. [2022-11-02 20:48:27,342 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 109 transitions, 339 flow [2022-11-02 20:48:27,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:48:27,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-02 20:48:27,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 687 transitions. [2022-11-02 20:48:27,366 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8481481481481481 [2022-11-02 20:48:27,367 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 687 transitions. [2022-11-02 20:48:27,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 687 transitions. [2022-11-02 20:48:27,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:48:27,375 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 687 transitions. [2022-11-02 20:48:27,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 76.33333333333333) internal successors, (687), 9 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:27,389 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 90.0) internal successors, (900), 10 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:27,389 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 90.0) internal successors, (900), 10 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:27,391 INFO L175 Difference]: Start difference. First operand has 82 places, 73 transitions, 155 flow. Second operand 9 states and 687 transitions. [2022-11-02 20:48:27,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 109 transitions, 339 flow [2022-11-02 20:48:27,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 109 transitions, 334 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-02 20:48:27,403 INFO L231 Difference]: Finished difference. Result has 94 places, 75 transitions, 209 flow [2022-11-02 20:48:27,405 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=209, PETRI_PLACES=94, PETRI_TRANSITIONS=75} [2022-11-02 20:48:27,411 INFO L287 CegarLoopForPetriNet]: 82 programPoint places, 12 predicate places. [2022-11-02 20:48:27,411 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 75 transitions, 209 flow [2022-11-02 20:48:27,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 72.0) internal successors, (432), 6 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:27,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:48:27,413 INFO L208 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] [2022-11-02 20:48:27,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:48:27,414 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:48:27,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:48:27,416 INFO L85 PathProgramCache]: Analyzing trace with hash -185193977, now seen corresponding path program 1 times [2022-11-02 20:48:27,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:48:27,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487050460] [2022-11-02 20:48:27,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:48:27,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:48:27,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:48:27,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:48:27,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:48:27,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487050460] [2022-11-02 20:48:27,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487050460] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:48:27,984 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:48:27,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:48:27,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88759721] [2022-11-02 20:48:27,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:48:27,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:48:27,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:48:27,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:48:27,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:48:27,994 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 90 [2022-11-02 20:48:27,995 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 75 transitions, 209 flow. Second operand has 7 states, 7 states have (on average 71.85714285714286) internal successors, (503), 7 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:27,995 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:48:28,001 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 90 [2022-11-02 20:48:28,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:48:28,348 INFO L130 PetriNetUnfolder]: 123/409 cut-off events. [2022-11-02 20:48:28,348 INFO L131 PetriNetUnfolder]: For 655/723 co-relation queries the response was YES. [2022-11-02 20:48:28,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1202 conditions, 409 events. 123/409 cut-off events. For 655/723 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1941 event pairs, 7 based on Foata normal form. 13/408 useless extension candidates. Maximal degree in co-relation 1160. Up to 121 conditions per place. [2022-11-02 20:48:28,353 INFO L137 encePairwiseOnDemand]: 80/90 looper letters, 22 selfloop transitions, 7 changer transitions 34/119 dead transitions. [2022-11-02 20:48:28,353 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 119 transitions, 634 flow [2022-11-02 20:48:28,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 20:48:28,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-02 20:48:28,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 973 transitions. [2022-11-02 20:48:28,356 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8316239316239317 [2022-11-02 20:48:28,356 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 973 transitions. [2022-11-02 20:48:28,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 973 transitions. [2022-11-02 20:48:28,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:48:28,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 973 transitions. [2022-11-02 20:48:28,374 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 74.84615384615384) internal successors, (973), 13 states have internal predecessors, (973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:28,377 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 90.0) internal successors, (1260), 14 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:28,378 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 90.0) internal successors, (1260), 14 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:28,378 INFO L175 Difference]: Start difference. First operand has 94 places, 75 transitions, 209 flow. Second operand 13 states and 973 transitions. [2022-11-02 20:48:28,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 119 transitions, 634 flow [2022-11-02 20:48:28,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 119 transitions, 594 flow, removed 12 selfloop flow, removed 4 redundant places. [2022-11-02 20:48:28,385 INFO L231 Difference]: Finished difference. Result has 107 places, 77 transitions, 264 flow [2022-11-02 20:48:28,385 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=264, PETRI_PLACES=107, PETRI_TRANSITIONS=77} [2022-11-02 20:48:28,387 INFO L287 CegarLoopForPetriNet]: 82 programPoint places, 25 predicate places. [2022-11-02 20:48:28,387 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 77 transitions, 264 flow [2022-11-02 20:48:28,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 71.85714285714286) internal successors, (503), 7 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:28,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:48:28,388 INFO L208 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] [2022-11-02 20:48:28,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:48:28,388 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:48:28,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:48:28,390 INFO L85 PathProgramCache]: Analyzing trace with hash -692916785, now seen corresponding path program 1 times [2022-11-02 20:48:28,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:48:28,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795097987] [2022-11-02 20:48:28,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:48:28,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:48:28,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:48:28,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:48:28,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:48:28,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795097987] [2022-11-02 20:48:28,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795097987] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:48:28,646 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:48:28,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:48:28,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691722851] [2022-11-02 20:48:28,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:48:28,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:48:28,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:48:28,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:48:28,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:48:28,651 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 90 [2022-11-02 20:48:28,652 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 77 transitions, 264 flow. Second operand has 6 states, 6 states have (on average 76.66666666666667) internal successors, (460), 6 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:28,652 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:48:28,653 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 90 [2022-11-02 20:48:28,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:48:28,832 INFO L130 PetriNetUnfolder]: 47/305 cut-off events. [2022-11-02 20:48:28,832 INFO L131 PetriNetUnfolder]: For 651/704 co-relation queries the response was YES. [2022-11-02 20:48:28,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 798 conditions, 305 events. 47/305 cut-off events. For 651/704 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1513 event pairs, 16 based on Foata normal form. 16/310 useless extension candidates. Maximal degree in co-relation 747. Up to 71 conditions per place. [2022-11-02 20:48:28,837 INFO L137 encePairwiseOnDemand]: 84/90 looper letters, 11 selfloop transitions, 4 changer transitions 13/92 dead transitions. [2022-11-02 20:48:28,837 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 92 transitions, 429 flow [2022-11-02 20:48:28,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:48:28,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-02 20:48:28,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 700 transitions. [2022-11-02 20:48:28,840 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8641975308641975 [2022-11-02 20:48:28,840 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 700 transitions. [2022-11-02 20:48:28,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 700 transitions. [2022-11-02 20:48:28,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:48:28,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 700 transitions. [2022-11-02 20:48:28,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 77.77777777777777) internal successors, (700), 9 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:28,845 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 90.0) internal successors, (900), 10 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:28,845 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 90.0) internal successors, (900), 10 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:28,845 INFO L175 Difference]: Start difference. First operand has 107 places, 77 transitions, 264 flow. Second operand 9 states and 700 transitions. [2022-11-02 20:48:28,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 92 transitions, 429 flow [2022-11-02 20:48:28,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 92 transitions, 375 flow, removed 21 selfloop flow, removed 8 redundant places. [2022-11-02 20:48:28,854 INFO L231 Difference]: Finished difference. Result has 105 places, 77 transitions, 263 flow [2022-11-02 20:48:28,854 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=263, PETRI_PLACES=105, PETRI_TRANSITIONS=77} [2022-11-02 20:48:28,856 INFO L287 CegarLoopForPetriNet]: 82 programPoint places, 23 predicate places. [2022-11-02 20:48:28,857 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 77 transitions, 263 flow [2022-11-02 20:48:28,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 76.66666666666667) internal successors, (460), 6 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:28,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:48:28,857 INFO L208 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] [2022-11-02 20:48:28,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:48:28,858 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:48:28,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:48:28,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1712420238, now seen corresponding path program 1 times [2022-11-02 20:48:28,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:48:28,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868890553] [2022-11-02 20:48:28,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:48:28,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:48:28,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:48:29,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:48:29,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:48:29,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868890553] [2022-11-02 20:48:29,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868890553] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:48:29,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:48:29,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:48:29,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317632103] [2022-11-02 20:48:29,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:48:29,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:48:29,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:48:29,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:48:29,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:48:29,119 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 90 [2022-11-02 20:48:29,120 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 77 transitions, 263 flow. Second operand has 8 states, 8 states have (on average 71.75) internal successors, (574), 8 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:29,120 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:48:29,120 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 90 [2022-11-02 20:48:29,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:48:29,354 INFO L130 PetriNetUnfolder]: 37/258 cut-off events. [2022-11-02 20:48:29,355 INFO L131 PetriNetUnfolder]: For 438/665 co-relation queries the response was YES. [2022-11-02 20:48:29,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 695 conditions, 258 events. 37/258 cut-off events. For 438/665 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1114 event pairs, 9 based on Foata normal form. 6/255 useless extension candidates. Maximal degree in co-relation 641. Up to 45 conditions per place. [2022-11-02 20:48:29,358 INFO L137 encePairwiseOnDemand]: 81/90 looper letters, 22 selfloop transitions, 8 changer transitions 23/109 dead transitions. [2022-11-02 20:48:29,358 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 109 transitions, 596 flow [2022-11-02 20:48:29,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:48:29,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-02 20:48:29,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 821 transitions. [2022-11-02 20:48:29,361 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8292929292929293 [2022-11-02 20:48:29,361 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 821 transitions. [2022-11-02 20:48:29,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 821 transitions. [2022-11-02 20:48:29,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:48:29,362 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 821 transitions. [2022-11-02 20:48:29,364 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 74.63636363636364) internal successors, (821), 11 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:29,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 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) [2022-11-02 20:48:29,367 INFO L81 ComplementDD]: Finished complementDD. Result has 12 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) [2022-11-02 20:48:29,367 INFO L175 Difference]: Start difference. First operand has 105 places, 77 transitions, 263 flow. Second operand 11 states and 821 transitions. [2022-11-02 20:48:29,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 109 transitions, 596 flow [2022-11-02 20:48:29,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 109 transitions, 534 flow, removed 26 selfloop flow, removed 11 redundant places. [2022-11-02 20:48:29,372 INFO L231 Difference]: Finished difference. Result has 106 places, 79 transitions, 299 flow [2022-11-02 20:48:29,372 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=299, PETRI_PLACES=106, PETRI_TRANSITIONS=79} [2022-11-02 20:48:29,373 INFO L287 CegarLoopForPetriNet]: 82 programPoint places, 24 predicate places. [2022-11-02 20:48:29,373 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 79 transitions, 299 flow [2022-11-02 20:48:29,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 71.75) internal successors, (574), 8 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:29,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:48:29,374 INFO L208 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] [2022-11-02 20:48:29,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:48:29,375 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:48:29,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:48:29,376 INFO L85 PathProgramCache]: Analyzing trace with hash -2070274756, now seen corresponding path program 1 times [2022-11-02 20:48:29,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:48:29,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411892874] [2022-11-02 20:48:29,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:48:29,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:48:29,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:48:29,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:48:29,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:48:29,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411892874] [2022-11-02 20:48:29,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411892874] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:48:29,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:48:29,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:48:29,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894408242] [2022-11-02 20:48:29,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:48:29,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:48:29,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:48:29,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:48:29,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:48:29,608 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 90 [2022-11-02 20:48:29,609 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 79 transitions, 299 flow. Second operand has 8 states, 8 states have (on average 70.0) internal successors, (560), 8 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:29,609 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:48:29,610 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 90 [2022-11-02 20:48:29,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:48:29,822 INFO L130 PetriNetUnfolder]: 44/233 cut-off events. [2022-11-02 20:48:29,822 INFO L131 PetriNetUnfolder]: For 669/888 co-relation queries the response was YES. [2022-11-02 20:48:29,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 694 conditions, 233 events. 44/233 cut-off events. For 669/888 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 866 event pairs, 3 based on Foata normal form. 9/234 useless extension candidates. Maximal degree in co-relation 657. Up to 32 conditions per place. [2022-11-02 20:48:29,824 INFO L137 encePairwiseOnDemand]: 80/90 looper letters, 16 selfloop transitions, 6 changer transitions 36/111 dead transitions. [2022-11-02 20:48:29,825 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 111 transitions, 710 flow [2022-11-02 20:48:29,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:48:29,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-02 20:48:29,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 800 transitions. [2022-11-02 20:48:29,827 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8080808080808081 [2022-11-02 20:48:29,828 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 800 transitions. [2022-11-02 20:48:29,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 800 transitions. [2022-11-02 20:48:29,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:48:29,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 800 transitions. [2022-11-02 20:48:29,830 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 72.72727272727273) internal successors, (800), 11 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:29,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 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) [2022-11-02 20:48:29,833 INFO L81 ComplementDD]: Finished complementDD. Result has 12 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) [2022-11-02 20:48:29,833 INFO L175 Difference]: Start difference. First operand has 106 places, 79 transitions, 299 flow. Second operand 11 states and 800 transitions. [2022-11-02 20:48:29,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 111 transitions, 710 flow [2022-11-02 20:48:29,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 111 transitions, 570 flow, removed 59 selfloop flow, removed 8 redundant places. [2022-11-02 20:48:29,839 INFO L231 Difference]: Finished difference. Result has 110 places, 71 transitions, 237 flow [2022-11-02 20:48:29,839 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=237, PETRI_PLACES=110, PETRI_TRANSITIONS=71} [2022-11-02 20:48:29,840 INFO L287 CegarLoopForPetriNet]: 82 programPoint places, 28 predicate places. [2022-11-02 20:48:29,840 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 71 transitions, 237 flow [2022-11-02 20:48:29,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 70.0) internal successors, (560), 8 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:29,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:48:29,841 INFO L208 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] [2022-11-02 20:48:29,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:48:29,841 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:48:29,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:48:29,842 INFO L85 PathProgramCache]: Analyzing trace with hash 459887035, now seen corresponding path program 1 times [2022-11-02 20:48:29,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:48:29,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351155602] [2022-11-02 20:48:29,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:48:29,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:48:29,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:48:29,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:48:30,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:48:30,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351155602] [2022-11-02 20:48:30,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351155602] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:48:30,000 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:48:30,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:48:30,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142217626] [2022-11-02 20:48:30,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:48:30,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:48:30,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:48:30,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:48:30,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:48:30,003 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 90 [2022-11-02 20:48:30,004 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 71 transitions, 237 flow. Second operand has 6 states, 6 states have (on average 74.66666666666667) internal successors, (448), 6 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:30,004 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:48:30,004 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 90 [2022-11-02 20:48:30,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:48:30,169 INFO L130 PetriNetUnfolder]: 93/305 cut-off events. [2022-11-02 20:48:30,170 INFO L131 PetriNetUnfolder]: For 108/113 co-relation queries the response was YES. [2022-11-02 20:48:30,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 592 conditions, 305 events. 93/305 cut-off events. For 108/113 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1421 event pairs, 2 based on Foata normal form. 8/307 useless extension candidates. Maximal degree in co-relation 558. Up to 86 conditions per place. [2022-11-02 20:48:30,172 INFO L137 encePairwiseOnDemand]: 81/90 looper letters, 12 selfloop transitions, 5 changer transitions 21/96 dead transitions. [2022-11-02 20:48:30,172 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 96 transitions, 363 flow [2022-11-02 20:48:30,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:48:30,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-02 20:48:30,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 697 transitions. [2022-11-02 20:48:30,175 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8604938271604938 [2022-11-02 20:48:30,175 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 697 transitions. [2022-11-02 20:48:30,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 697 transitions. [2022-11-02 20:48:30,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:48:30,176 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 697 transitions. [2022-11-02 20:48:30,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 77.44444444444444) internal successors, (697), 9 states have internal predecessors, (697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:30,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 90.0) internal successors, (900), 10 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:30,180 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 90.0) internal successors, (900), 10 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:30,180 INFO L175 Difference]: Start difference. First operand has 110 places, 71 transitions, 237 flow. Second operand 9 states and 697 transitions. [2022-11-02 20:48:30,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 96 transitions, 363 flow [2022-11-02 20:48:30,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 96 transitions, 300 flow, removed 18 selfloop flow, removed 19 redundant places. [2022-11-02 20:48:30,183 INFO L231 Difference]: Finished difference. Result has 98 places, 73 transitions, 224 flow [2022-11-02 20:48:30,184 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=224, PETRI_PLACES=98, PETRI_TRANSITIONS=73} [2022-11-02 20:48:30,184 INFO L287 CegarLoopForPetriNet]: 82 programPoint places, 16 predicate places. [2022-11-02 20:48:30,184 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 73 transitions, 224 flow [2022-11-02 20:48:30,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 74.66666666666667) internal successors, (448), 6 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:30,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:48:30,185 INFO L208 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] [2022-11-02 20:48:30,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:48:30,186 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:48:30,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:48:30,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1339822051, now seen corresponding path program 1 times [2022-11-02 20:48:30,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:48:30,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724224263] [2022-11-02 20:48:30,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:48:30,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:48:30,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:48:30,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:48:30,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:48:30,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724224263] [2022-11-02 20:48:30,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724224263] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:48:30,361 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:48:30,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:48:30,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011609612] [2022-11-02 20:48:30,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:48:30,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:48:30,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:48:30,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:48:30,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:48:30,364 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 90 [2022-11-02 20:48:30,365 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 73 transitions, 224 flow. Second operand has 7 states, 7 states have (on average 74.57142857142857) internal successors, (522), 7 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:30,365 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:48:30,365 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 90 [2022-11-02 20:48:30,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:48:30,534 INFO L130 PetriNetUnfolder]: 42/189 cut-off events. [2022-11-02 20:48:30,535 INFO L131 PetriNetUnfolder]: For 253/277 co-relation queries the response was YES. [2022-11-02 20:48:30,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 538 conditions, 189 events. 42/189 cut-off events. For 253/277 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 669 event pairs, 0 based on Foata normal form. 9/196 useless extension candidates. Maximal degree in co-relation 493. Up to 64 conditions per place. [2022-11-02 20:48:30,536 INFO L137 encePairwiseOnDemand]: 81/90 looper letters, 8 selfloop transitions, 7 changer transitions 25/98 dead transitions. [2022-11-02 20:48:30,537 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 98 transitions, 481 flow [2022-11-02 20:48:30,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:48:30,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-02 20:48:30,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 772 transitions. [2022-11-02 20:48:30,539 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8577777777777778 [2022-11-02 20:48:30,540 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 772 transitions. [2022-11-02 20:48:30,540 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 772 transitions. [2022-11-02 20:48:30,540 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:48:30,541 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 772 transitions. [2022-11-02 20:48:30,542 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 77.2) internal successors, (772), 10 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:30,544 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 90.0) internal successors, (990), 11 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:30,545 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 90.0) internal successors, (990), 11 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:30,545 INFO L175 Difference]: Start difference. First operand has 98 places, 73 transitions, 224 flow. Second operand 10 states and 772 transitions. [2022-11-02 20:48:30,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 98 transitions, 481 flow [2022-11-02 20:48:30,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 98 transitions, 454 flow, removed 8 selfloop flow, removed 6 redundant places. [2022-11-02 20:48:30,549 INFO L231 Difference]: Finished difference. Result has 103 places, 73 transitions, 246 flow [2022-11-02 20:48:30,549 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=246, PETRI_PLACES=103, PETRI_TRANSITIONS=73} [2022-11-02 20:48:30,550 INFO L287 CegarLoopForPetriNet]: 82 programPoint places, 21 predicate places. [2022-11-02 20:48:30,550 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 73 transitions, 246 flow [2022-11-02 20:48:30,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 74.57142857142857) internal successors, (522), 7 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:30,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:48:30,551 INFO L208 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] [2022-11-02 20:48:30,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:48:30,552 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:48:30,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:48:30,552 INFO L85 PathProgramCache]: Analyzing trace with hash -607107152, now seen corresponding path program 1 times [2022-11-02 20:48:30,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:48:30,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918808171] [2022-11-02 20:48:30,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:48:30,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:48:30,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:48:30,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:48:30,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:48:30,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918808171] [2022-11-02 20:48:30,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918808171] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:48:30,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:48:30,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:48:30,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403540973] [2022-11-02 20:48:30,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:48:30,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:48:30,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:48:30,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:48:30,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:48:30,798 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 90 [2022-11-02 20:48:30,799 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 73 transitions, 246 flow. Second operand has 8 states, 8 states have (on average 74.5) internal successors, (596), 8 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:30,799 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:48:30,800 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 90 [2022-11-02 20:48:30,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:48:30,947 INFO L130 PetriNetUnfolder]: 4/82 cut-off events. [2022-11-02 20:48:30,947 INFO L131 PetriNetUnfolder]: For 179/203 co-relation queries the response was YES. [2022-11-02 20:48:30,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211 conditions, 82 events. 4/82 cut-off events. For 179/203 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 101 event pairs, 0 based on Foata normal form. 6/88 useless extension candidates. Maximal degree in co-relation 191. Up to 13 conditions per place. [2022-11-02 20:48:30,948 INFO L137 encePairwiseOnDemand]: 81/90 looper letters, 0 selfloop transitions, 0 changer transitions 75/75 dead transitions. [2022-11-02 20:48:30,948 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 75 transitions, 346 flow [2022-11-02 20:48:30,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:48:30,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-02 20:48:30,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 829 transitions. [2022-11-02 20:48:30,951 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8373737373737373 [2022-11-02 20:48:30,951 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 829 transitions. [2022-11-02 20:48:30,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 829 transitions. [2022-11-02 20:48:30,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:48:30,952 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 829 transitions. [2022-11-02 20:48:30,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 75.36363636363636) internal successors, (829), 11 states have internal predecessors, (829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:30,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 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) [2022-11-02 20:48:30,956 INFO L81 ComplementDD]: Finished complementDD. Result has 12 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) [2022-11-02 20:48:30,957 INFO L175 Difference]: Start difference. First operand has 103 places, 73 transitions, 246 flow. Second operand 11 states and 829 transitions. [2022-11-02 20:48:30,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 75 transitions, 346 flow [2022-11-02 20:48:30,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 75 transitions, 282 flow, removed 23 selfloop flow, removed 10 redundant places. [2022-11-02 20:48:30,959 INFO L231 Difference]: Finished difference. Result has 92 places, 0 transitions, 0 flow [2022-11-02 20:48:30,959 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=92, PETRI_TRANSITIONS=0} [2022-11-02 20:48:30,960 INFO L287 CegarLoopForPetriNet]: 82 programPoint places, 10 predicate places. [2022-11-02 20:48:30,960 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 0 transitions, 0 flow [2022-11-02 20:48:30,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 74.5) internal successors, (596), 8 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:48:30,963 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-11-02 20:48:30,964 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-11-02 20:48:30,964 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-11-02 20:48:30,965 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-11-02 20:48:30,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 20:48:30,965 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:48:30,968 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-02 20:48:30,969 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 20:48:30,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 08:48:30 BasicIcfg [2022-11-02 20:48:30,976 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 20:48:30,976 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 20:48:30,976 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 20:48:30,977 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 20:48:30,977 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:48:25" (3/4) ... [2022-11-02 20:48:30,980 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-02 20:48:30,987 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-11-02 20:48:30,987 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-11-02 20:48:30,987 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2022-11-02 20:48:30,994 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2022-11-02 20:48:30,994 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-02 20:48:30,994 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-02 20:48:30,994 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-02 20:48:31,039 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac272c7-bbc9-4e55-bb77-ad4002133f3a/bin/uautomizer-Dbtcem3rbc/witness.graphml [2022-11-02 20:48:31,039 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 20:48:31,040 INFO L158 Benchmark]: Toolchain (without parser) took 6711.38ms. Allocated memory was 123.7MB in the beginning and 188.7MB in the end (delta: 65.0MB). Free memory was 85.7MB in the beginning and 114.1MB in the end (delta: -28.4MB). Peak memory consumption was 36.4MB. Max. memory is 16.1GB. [2022-11-02 20:48:31,040 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 123.7MB. Free memory was 104.0MB in the beginning and 103.9MB in the end (delta: 71.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:48:31,041 INFO L158 Benchmark]: CACSL2BoogieTranslator took 675.96ms. Allocated memory is still 123.7MB. Free memory was 85.4MB in the beginning and 89.1MB in the end (delta: -3.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-02 20:48:31,041 INFO L158 Benchmark]: Boogie Procedure Inliner took 70.53ms. Allocated memory is still 123.7MB. Free memory was 89.1MB in the beginning and 87.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 20:48:31,041 INFO L158 Benchmark]: Boogie Preprocessor took 37.07ms. Allocated memory is still 123.7MB. Free memory was 87.0MB in the beginning and 85.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 20:48:31,041 INFO L158 Benchmark]: RCFGBuilder took 482.73ms. Allocated memory is still 123.7MB. Free memory was 85.7MB in the beginning and 72.2MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-02 20:48:31,042 INFO L158 Benchmark]: TraceAbstraction took 5370.62ms. Allocated memory was 123.7MB in the beginning and 188.7MB in the end (delta: 65.0MB). Free memory was 71.8MB in the beginning and 117.2MB in the end (delta: -45.4MB). Peak memory consumption was 21.6MB. Max. memory is 16.1GB. [2022-11-02 20:48:31,042 INFO L158 Benchmark]: Witness Printer took 63.09ms. Allocated memory is still 188.7MB. Free memory was 117.2MB in the beginning and 114.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-02 20:48:31,045 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 123.7MB. Free memory was 104.0MB in the beginning and 103.9MB in the end (delta: 71.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 675.96ms. Allocated memory is still 123.7MB. Free memory was 85.4MB in the beginning and 89.1MB in the end (delta: -3.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 70.53ms. Allocated memory is still 123.7MB. Free memory was 89.1MB in the beginning and 87.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.07ms. Allocated memory is still 123.7MB. Free memory was 87.0MB in the beginning and 85.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 482.73ms. Allocated memory is still 123.7MB. Free memory was 85.7MB in the beginning and 72.2MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 5370.62ms. Allocated memory was 123.7MB in the beginning and 188.7MB in the end (delta: 65.0MB). Free memory was 71.8MB in the beginning and 117.2MB in the end (delta: -45.4MB). Peak memory consumption was 21.6MB. Max. memory is 16.1GB. * Witness Printer took 63.09ms. Allocated memory is still 188.7MB. Free memory was 117.2MB in the beginning and 114.1MB 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 7 procedures, 112 locations, 4 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: 5.2s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 269 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 269 mSDsluCounter, 407 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 388 mSDsCounter, 54 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 443 IncrementalHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 54 mSolverCounterUnsat, 101 mSDtfsCounter, 443 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 106 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=299occurred in iteration=4, InterpolantAutomatonStates: 83, 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: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 469 NumberOfCodeBlocks, 469 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 461 ConstructedInterpolants, 0 QuantifiedInterpolants, 2039 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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! [2022-11-02 20:48:31,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac272c7-bbc9-4e55-bb77-ad4002133f3a/bin/uautomizer-Dbtcem3rbc/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