./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p12.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/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_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p12.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/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 64bit --witnessprinter.graph.data.programhash f935d95150c6192cae235c17f2cdf998848e2616573edb0256a18965b6c2ef33 --- 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 20:09:14,814 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:09:14,826 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:09:14,859 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:09:14,860 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:09:14,861 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:09:14,862 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:09:14,864 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:09:14,865 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:09:14,866 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:09:14,867 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:09:14,869 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:09:14,869 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:09:14,870 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:09:14,871 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:09:14,872 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:09:14,873 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:09:14,874 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:09:14,876 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:09:14,877 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:09:14,879 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:09:14,880 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:09:14,881 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:09:14,882 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:09:14,886 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:09:14,886 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:09:14,886 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:09:14,887 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:09:14,888 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:09:14,889 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:09:14,889 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:09:14,890 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:09:14,891 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:09:14,892 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:09:14,893 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:09:14,893 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:09:14,894 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:09:14,894 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:09:14,894 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:09:14,895 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:09:14,896 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:09:14,899 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-02 20:09:14,933 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:09:14,934 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:09:14,934 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:09:14,934 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:09:14,935 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:09:14,935 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:09:14,936 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:09:14,936 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:09:14,936 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:09:14,936 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:09:14,937 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:09:14,937 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:09:14,937 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:09:14,937 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:09:14,937 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:09:14,938 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:09:14,938 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:09:14,938 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:09:14,938 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:09:14,938 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:09:14,939 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:09:14,939 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:09:14,939 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:09:14,939 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:09:14,940 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:09:14,940 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:09:14,940 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:09:14,940 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:09:14,944 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:09:14,944 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:09:14,944 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_3c37fd25-d185-44f9-a509-91ce86e7e1fd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f935d95150c6192cae235c17f2cdf998848e2616573edb0256a18965b6c2ef33 [2022-11-02 20:09:15,253 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:09:15,289 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:09:15,293 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:09:15,295 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:09:15,296 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:09:15,298 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p12.c [2022-11-02 20:09:15,382 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/data/74105160e/213e570b4c254ab49493dc01aa12d15a/FLAGa39ce2796 [2022-11-02 20:09:15,957 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:09:15,957 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p12.c [2022-11-02 20:09:15,972 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/data/74105160e/213e570b4c254ab49493dc01aa12d15a/FLAGa39ce2796 [2022-11-02 20:09:16,262 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/data/74105160e/213e570b4c254ab49493dc01aa12d15a [2022-11-02 20:09:16,267 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:09:16,270 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:09:16,272 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:09:16,273 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:09:16,276 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:09:16,277 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:09:16" (1/1) ... [2022-11-02 20:09:16,278 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2acc6a7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:09:16, skipping insertion in model container [2022-11-02 20:09:16,278 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:09:16" (1/1) ... [2022-11-02 20:09:16,286 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:09:16,332 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:09:16,510 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_3c37fd25-d185-44f9-a509-91ce86e7e1fd/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p12.c[1107,1120] [2022-11-02 20:09:16,655 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:09:16,658 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:09:16,673 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_3c37fd25-d185-44f9-a509-91ce86e7e1fd/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p12.c[1107,1120] [2022-11-02 20:09:16,768 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:09:16,780 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:09:16,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:09:16 WrapperNode [2022-11-02 20:09:16,781 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:09:16,782 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:09:16,782 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:09:16,782 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:09:16,790 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:09:16" (1/1) ... [2022-11-02 20:09:16,820 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:09:16" (1/1) ... [2022-11-02 20:09:16,893 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 603 [2022-11-02 20:09:16,893 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:09:16,894 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:09:16,894 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:09:16,894 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:09:16,904 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:09:16" (1/1) ... [2022-11-02 20:09:16,904 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:09:16" (1/1) ... [2022-11-02 20:09:16,909 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:09:16" (1/1) ... [2022-11-02 20:09:16,910 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:09:16" (1/1) ... [2022-11-02 20:09:16,924 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:09:16" (1/1) ... [2022-11-02 20:09:16,929 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:09:16" (1/1) ... [2022-11-02 20:09:16,932 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:09:16" (1/1) ... [2022-11-02 20:09:16,936 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:09:16" (1/1) ... [2022-11-02 20:09:16,942 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:09:16,943 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:09:16,943 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:09:16,944 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:09:16,945 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:09:16" (1/1) ... [2022-11-02 20:09:16,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:09:16,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:09:16,994 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:09:17,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:09:17,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:09:17,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:09:17,277 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:09:17,280 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:09:18,076 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:09:18,087 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:09:18,087 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 20:09:18,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:09:18 BoogieIcfgContainer [2022-11-02 20:09:18,090 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:09:18,094 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:09:18,094 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:09:18,098 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:09:18,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:09:16" (1/3) ... [2022-11-02 20:09:18,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60d74c95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:09:18, skipping insertion in model container [2022-11-02 20:09:18,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:09:16" (2/3) ... [2022-11-02 20:09:18,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60d74c95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:09:18, skipping insertion in model container [2022-11-02 20:09:18,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:09:18" (3/3) ... [2022-11-02 20:09:18,101 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p12.c [2022-11-02 20:09:18,119 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:09:18,120 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:09:18,173 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:09:18,183 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;@2e2cc7cb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:09:18,183 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:09:18,203 INFO L276 IsEmpty]: Start isEmpty. Operand has 95 states, 93 states have (on average 1.4946236559139785) internal successors, (139), 94 states have internal predecessors, (139), 0 states have call successors, (0), 0 states 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 20:09:18,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 20:09:18,210 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:09:18,211 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 20:09:18,212 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:09:18,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:09:18,217 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-02 20:09:18,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:09:18,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810447039] [2022-11-02 20:09:18,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:09:18,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:09:18,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:09:18,557 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:09:18,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:09:18,651 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:09:18,654 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:09:18,655 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-02 20:09:18,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:09:18,661 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-02 20:09:18,666 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 20:09:18,687 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-02 20:09:18,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 08:09:18 BoogieIcfgContainer [2022-11-02 20:09:18,697 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 20:09:18,697 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 20:09:18,698 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 20:09:18,698 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 20:09:18,698 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:09:18" (3/4) ... [2022-11-02 20:09:18,702 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-02 20:09:18,702 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 20:09:18,704 INFO L158 Benchmark]: Toolchain (without parser) took 2433.02ms. Allocated memory was 117.4MB in the beginning and 161.5MB in the end (delta: 44.0MB). Free memory was 82.5MB in the beginning and 90.4MB in the end (delta: -7.9MB). Peak memory consumption was 36.4MB. Max. memory is 16.1GB. [2022-11-02 20:09:18,704 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 83.9MB. Free memory was 40.7MB in the beginning and 40.7MB in the end (delta: 40.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:09:18,705 INFO L158 Benchmark]: CACSL2BoogieTranslator took 508.92ms. Allocated memory is still 117.4MB. Free memory was 82.3MB in the beginning and 83.5MB in the end (delta: -1.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-02 20:09:18,705 INFO L158 Benchmark]: Boogie Procedure Inliner took 111.54ms. Allocated memory is still 117.4MB. Free memory was 83.5MB in the beginning and 77.2MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-02 20:09:18,706 INFO L158 Benchmark]: Boogie Preprocessor took 48.72ms. Allocated memory is still 117.4MB. Free memory was 77.2MB in the beginning and 73.6MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-02 20:09:18,707 INFO L158 Benchmark]: RCFGBuilder took 1146.67ms. Allocated memory was 117.4MB in the beginning and 161.5MB in the end (delta: 44.0MB). Free memory was 73.6MB in the beginning and 123.9MB in the end (delta: -50.4MB). Peak memory consumption was 49.6MB. Max. memory is 16.1GB. [2022-11-02 20:09:18,707 INFO L158 Benchmark]: TraceAbstraction took 603.33ms. Allocated memory is still 161.5MB. Free memory was 123.7MB in the beginning and 90.4MB in the end (delta: 33.3MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2022-11-02 20:09:18,708 INFO L158 Benchmark]: Witness Printer took 5.05ms. Allocated memory is still 161.5MB. Free memory is still 90.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:09:18,711 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 83.9MB. Free memory was 40.7MB in the beginning and 40.7MB in the end (delta: 40.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 508.92ms. Allocated memory is still 117.4MB. Free memory was 82.3MB in the beginning and 83.5MB in the end (delta: -1.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 111.54ms. Allocated memory is still 117.4MB. Free memory was 83.5MB in the beginning and 77.2MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 48.72ms. Allocated memory is still 117.4MB. Free memory was 77.2MB in the beginning and 73.6MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1146.67ms. Allocated memory was 117.4MB in the beginning and 161.5MB in the end (delta: 44.0MB). Free memory was 73.6MB in the beginning and 123.9MB in the end (delta: -50.4MB). Peak memory consumption was 49.6MB. Max. memory is 16.1GB. * TraceAbstraction took 603.33ms. Allocated memory is still 161.5MB. Free memory was 123.7MB in the beginning and 90.4MB in the end (delta: 33.3MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Witness Printer took 5.05ms. Allocated memory is still 161.5MB. Free memory is still 90.4MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseComplement at line 166, overapproximation of bitwiseOr at line 164, overapproximation of bitwiseAnd at line 151. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L28] const SORT_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 8); [L29] const SORT_3 msb_SORT_3 = (SORT_3)1 << (8 - 1); [L31] const SORT_10 mask_SORT_10 = (SORT_10)-1 >> (sizeof(SORT_10) * 8 - 32); [L32] const SORT_10 msb_SORT_10 = (SORT_10)1 << (32 - 1); [L34] const SORT_31 mask_SORT_31 = (SORT_31)-1 >> (sizeof(SORT_31) * 8 - 4); [L35] const SORT_31 msb_SORT_31 = (SORT_31)1 << (4 - 1); [L37] const SORT_69 mask_SORT_69 = (SORT_69)-1 >> (sizeof(SORT_69) * 8 - 10); [L38] const SORT_69 msb_SORT_69 = (SORT_69)1 << (10 - 1); [L40] const SORT_1 var_7 = 0; [L41] const SORT_10 var_12 = 0; [L42] const SORT_1 var_21 = 1; [L43] const SORT_69 var_70 = 0; [L44] const SORT_10 var_97 = 104; [L45] const SORT_10 var_151 = 1; [L47] SORT_1 input_2; [L48] SORT_3 input_4; [L49] SORT_1 input_5; [L50] SORT_1 input_6; [L51] SORT_1 input_29; [L52] SORT_31 input_32; [L53] SORT_1 input_34; [L54] SORT_31 input_36; [L55] SORT_1 input_38; [L56] SORT_1 input_44; [L57] SORT_1 input_46; [L58] SORT_1 input_48; [L59] SORT_3 input_52; [L60] SORT_1 input_55; [L61] SORT_1 input_65; [L62] SORT_1 input_73; [L63] SORT_1 input_79; [L64] SORT_1 input_80; [L65] SORT_1 input_91; [L66] SORT_1 input_92; [L67] SORT_1 input_93; [L68] SORT_1 input_107; [L69] SORT_1 input_113; [L70] SORT_1 input_119; [L71] SORT_1 input_125; [L72] SORT_1 input_126; [L73] SORT_1 input_127; [L74] SORT_1 input_141; [L75] SORT_69 input_149; [L77] SORT_1 state_8 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L78] SORT_1 state_14 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L79] SORT_1 state_25 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L80] SORT_1 state_27 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L81] SORT_1 state_40 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L82] SORT_1 state_42 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L83] SORT_1 state_50 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L84] SORT_1 state_57 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L85] SORT_1 state_59 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L86] SORT_1 state_61 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L87] SORT_1 state_63 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L88] SORT_1 state_67 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L89] SORT_69 state_71 = __VERIFIER_nondet_ushort() & mask_SORT_69; [L91] SORT_1 init_9_arg_1 = var_7; [L92] state_8 = init_9_arg_1 [L93] SORT_1 init_15_arg_1 = var_7; [L94] state_14 = init_15_arg_1 [L95] SORT_1 init_26_arg_1 = var_7; [L96] state_25 = init_26_arg_1 [L97] SORT_1 init_28_arg_1 = var_7; [L98] state_27 = init_28_arg_1 [L99] SORT_1 init_41_arg_1 = var_7; [L100] state_40 = init_41_arg_1 [L101] SORT_1 init_43_arg_1 = var_7; [L102] state_42 = init_43_arg_1 [L103] SORT_1 init_51_arg_1 = var_21; [L104] state_50 = init_51_arg_1 [L105] SORT_1 init_58_arg_1 = var_7; [L106] state_57 = init_58_arg_1 [L107] SORT_1 init_60_arg_1 = var_7; [L108] state_59 = init_60_arg_1 [L109] SORT_1 init_62_arg_1 = var_7; [L110] state_61 = init_62_arg_1 [L111] SORT_1 init_64_arg_1 = var_7; [L112] state_63 = init_64_arg_1 [L113] SORT_1 init_68_arg_1 = var_7; [L114] state_67 = init_68_arg_1 [L115] SORT_69 init_72_arg_1 = var_70; [L116] state_71 = init_72_arg_1 VAL [init_15_arg_1=0, init_26_arg_1=0, init_28_arg_1=0, init_41_arg_1=0, init_43_arg_1=0, init_51_arg_1=1, init_58_arg_1=0, init_60_arg_1=0, init_62_arg_1=0, init_64_arg_1=0, init_68_arg_1=0, init_72_arg_1=0, init_9_arg_1=0, mask_SORT_1=1, mask_SORT_10=4294967295, mask_SORT_3=255, mask_SORT_31=15, mask_SORT_69=1023, msb_SORT_1=1, msb_SORT_10=2147483648, msb_SORT_3=128, msb_SORT_31=8, msb_SORT_69=512, state_14=0, state_25=0, state_27=0, state_40=0, state_42=0, state_50=1, state_57=0, state_59=0, state_61=0, state_63=0, state_67=0, state_71=0, state_8=0, var_12=0, var_151=1, var_21=1, var_7=0, var_70=0, var_97=104] [L119] input_2 = __VERIFIER_nondet_uchar() [L120] input_4 = __VERIFIER_nondet_uchar() [L121] input_5 = __VERIFIER_nondet_uchar() [L122] input_6 = __VERIFIER_nondet_uchar() [L123] input_29 = __VERIFIER_nondet_uchar() [L124] input_32 = __VERIFIER_nondet_uchar() [L125] input_34 = __VERIFIER_nondet_uchar() [L126] input_36 = __VERIFIER_nondet_uchar() [L127] input_38 = __VERIFIER_nondet_uchar() [L128] input_44 = __VERIFIER_nondet_uchar() [L129] input_46 = __VERIFIER_nondet_uchar() [L130] input_48 = __VERIFIER_nondet_uchar() [L131] input_52 = __VERIFIER_nondet_uchar() [L132] input_55 = __VERIFIER_nondet_uchar() [L133] input_65 = __VERIFIER_nondet_uchar() [L134] input_73 = __VERIFIER_nondet_uchar() [L135] input_79 = __VERIFIER_nondet_uchar() [L136] input_80 = __VERIFIER_nondet_uchar() [L137] input_91 = __VERIFIER_nondet_uchar() [L138] input_92 = __VERIFIER_nondet_uchar() [L139] input_93 = __VERIFIER_nondet_uchar() [L140] input_107 = __VERIFIER_nondet_uchar() [L141] input_113 = __VERIFIER_nondet_uchar() [L142] input_119 = __VERIFIER_nondet_uchar() [L143] input_125 = __VERIFIER_nondet_uchar() [L144] input_126 = __VERIFIER_nondet_uchar() [L145] input_127 = __VERIFIER_nondet_uchar() [L146] input_141 = __VERIFIER_nondet_uchar() [L147] input_149 = __VERIFIER_nondet_ushort() [L150] SORT_1 var_11_arg_0 = state_8; [L151] var_11_arg_0 = var_11_arg_0 & mask_SORT_1 [L152] SORT_10 var_11 = var_11_arg_0; [L153] SORT_10 var_13_arg_0 = var_11; [L154] SORT_10 var_13_arg_1 = var_12; [L155] SORT_1 var_13 = var_13_arg_0 == var_13_arg_1; [L156] SORT_1 var_16_arg_0 = state_14; [L157] var_16_arg_0 = var_16_arg_0 & mask_SORT_1 [L158] SORT_10 var_16 = var_16_arg_0; [L159] SORT_10 var_17_arg_0 = var_16; [L160] SORT_10 var_17_arg_1 = var_12; [L161] SORT_1 var_17 = var_17_arg_0 == var_17_arg_1; [L162] SORT_1 var_18_arg_0 = var_13; [L163] SORT_1 var_18_arg_1 = var_17; [L164] SORT_1 var_18 = var_18_arg_0 | var_18_arg_1; [L165] SORT_1 var_22_arg_0 = var_18; [L166] SORT_1 var_22 = ~var_22_arg_0; [L167] SORT_1 var_23_arg_0 = var_21; [L168] SORT_1 var_23_arg_1 = var_22; [L169] SORT_1 var_23 = var_23_arg_0 & var_23_arg_1; [L170] var_23 = var_23 & mask_SORT_1 [L171] SORT_1 bad_24_arg_0 = var_23; [L172] CALL __VERIFIER_assert(!(bad_24_arg_0)) [L20] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L20] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 95 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=95occurred in iteration=0, InterpolantAutomatonStates: 0, 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, 0.0s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-02 20:09:18,764 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/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_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p12.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/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 64bit --witnessprinter.graph.data.programhash f935d95150c6192cae235c17f2cdf998848e2616573edb0256a18965b6c2ef33 --- 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 20:09:21,122 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:09:21,125 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:09:21,151 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:09:21,151 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:09:21,152 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:09:21,153 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:09:21,155 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:09:21,157 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:09:21,157 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:09:21,158 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:09:21,160 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:09:21,160 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:09:21,161 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:09:21,162 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:09:21,163 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:09:21,164 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:09:21,165 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:09:21,167 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:09:21,169 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:09:21,170 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:09:21,171 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:09:21,173 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:09:21,173 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:09:21,177 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:09:21,177 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:09:21,178 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:09:21,179 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:09:21,179 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:09:21,180 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:09:21,180 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:09:21,181 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:09:21,182 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:09:21,183 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:09:21,184 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:09:21,184 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:09:21,185 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:09:21,185 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:09:21,185 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:09:21,186 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:09:21,187 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:09:21,189 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-02 20:09:21,253 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:09:21,254 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:09:21,254 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:09:21,254 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:09:21,255 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:09:21,255 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:09:21,256 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:09:21,256 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:09:21,256 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:09:21,257 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:09:21,257 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:09:21,257 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:09:21,257 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:09:21,258 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:09:21,258 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-02 20:09:21,258 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-02 20:09:21,258 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-02 20:09:21,258 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:09:21,259 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:09:21,259 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:09:21,259 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:09:21,259 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:09:21,260 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:09:21,260 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:09:21,260 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:09:21,265 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:09:21,265 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:09:21,265 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-02 20:09:21,266 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-02 20:09:21,266 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:09:21,267 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:09:21,267 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:09:21,267 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-02 20:09:21,267 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_3c37fd25-d185-44f9-a509-91ce86e7e1fd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f935d95150c6192cae235c17f2cdf998848e2616573edb0256a18965b6c2ef33 [2022-11-02 20:09:21,641 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:09:21,672 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:09:21,675 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:09:21,677 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:09:21,679 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:09:21,685 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p12.c [2022-11-02 20:09:21,760 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/data/2351b40e8/317624055a0f47019fda593b52b6ca1d/FLAGa6628feb1 [2022-11-02 20:09:22,367 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:09:22,368 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p12.c [2022-11-02 20:09:22,377 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/data/2351b40e8/317624055a0f47019fda593b52b6ca1d/FLAGa6628feb1 [2022-11-02 20:09:22,691 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/data/2351b40e8/317624055a0f47019fda593b52b6ca1d [2022-11-02 20:09:22,693 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:09:22,694 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:09:22,695 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:09:22,695 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:09:22,709 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:09:22,709 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:09:22" (1/1) ... [2022-11-02 20:09:22,710 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fa1bdf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:09:22, skipping insertion in model container [2022-11-02 20:09:22,711 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:09:22" (1/1) ... [2022-11-02 20:09:22,721 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:09:22,775 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:09:22,904 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_3c37fd25-d185-44f9-a509-91ce86e7e1fd/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p12.c[1107,1120] [2022-11-02 20:09:23,073 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:09:23,086 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:09:23,100 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_3c37fd25-d185-44f9-a509-91ce86e7e1fd/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p12.c[1107,1120] [2022-11-02 20:09:23,151 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:09:23,165 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:09:23,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:09:23 WrapperNode [2022-11-02 20:09:23,165 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:09:23,167 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:09:23,167 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:09:23,168 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:09:23,175 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:09:23" (1/1) ... [2022-11-02 20:09:23,199 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:09:23" (1/1) ... [2022-11-02 20:09:23,268 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 603 [2022-11-02 20:09:23,270 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:09:23,271 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:09:23,271 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:09:23,271 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:09:23,280 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:09:23" (1/1) ... [2022-11-02 20:09:23,281 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:09:23" (1/1) ... [2022-11-02 20:09:23,299 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:09:23" (1/1) ... [2022-11-02 20:09:23,299 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:09:23" (1/1) ... [2022-11-02 20:09:23,310 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:09:23" (1/1) ... [2022-11-02 20:09:23,345 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:09:23" (1/1) ... [2022-11-02 20:09:23,364 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:09:23" (1/1) ... [2022-11-02 20:09:23,367 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:09:23" (1/1) ... [2022-11-02 20:09:23,373 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:09:23,374 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:09:23,374 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:09:23,374 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:09:23,375 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:09:23" (1/1) ... [2022-11-02 20:09:23,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:09:23,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:09:23,408 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:09:23,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:09:23,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:09:23,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:09:23,646 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:09:23,652 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:09:24,341 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:09:24,350 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:09:24,351 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 20:09:24,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:09:24 BoogieIcfgContainer [2022-11-02 20:09:24,353 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:09:24,356 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:09:24,356 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:09:24,360 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:09:24,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:09:22" (1/3) ... [2022-11-02 20:09:24,361 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40b87d6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:09:24, skipping insertion in model container [2022-11-02 20:09:24,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:09:23" (2/3) ... [2022-11-02 20:09:24,362 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40b87d6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:09:24, skipping insertion in model container [2022-11-02 20:09:24,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:09:24" (3/3) ... [2022-11-02 20:09:24,363 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p12.c [2022-11-02 20:09:24,384 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:09:24,384 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:09:24,440 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:09:24,448 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;@244d5de2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:09:24,448 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:09:24,453 INFO L276 IsEmpty]: Start isEmpty. Operand has 95 states, 93 states have (on average 1.4946236559139785) internal successors, (139), 94 states have internal predecessors, (139), 0 states have call successors, (0), 0 states 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 20:09:24,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 20:09:24,460 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:09:24,461 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 20:09:24,462 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:09:24,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:09:24,468 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-02 20:09:24,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:09:24,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1418626580] [2022-11-02 20:09:24,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:09:24,486 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:09:24,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:09:24,493 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:09:24,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-02 20:09:24,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:09:24,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-02 20:09:24,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:09:24,966 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 20:09:24,966 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:09:24,967 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:09:24,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1418626580] [2022-11-02 20:09:24,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1418626580] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:09:24,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:09:24,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:09:24,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651272011] [2022-11-02 20:09:24,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:09:24,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:09:24,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:09:25,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:09:25,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:09:25,013 INFO L87 Difference]: Start difference. First operand has 95 states, 93 states have (on average 1.4946236559139785) internal successors, (139), 94 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states 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 20:09:25,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:09:25,175 INFO L93 Difference]: Finished difference Result 272 states and 408 transitions. [2022-11-02 20:09:25,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:09:25,182 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-02 20:09:25,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:09:25,198 INFO L225 Difference]: With dead ends: 272 [2022-11-02 20:09:25,198 INFO L226 Difference]: Without dead ends: 179 [2022-11-02 20:09:25,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:09:25,212 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 256 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:09:25,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [256 Valid, 366 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:09:25,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2022-11-02 20:09:25,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 93. [2022-11-02 20:09:25,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 1.4673913043478262) internal successors, (135), 92 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 20:09:25,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 135 transitions. [2022-11-02 20:09:25,262 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 135 transitions. Word has length 5 [2022-11-02 20:09:25,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:09:25,263 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 135 transitions. [2022-11-02 20:09:25,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states 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 20:09:25,264 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 135 transitions. [2022-11-02 20:09:25,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-02 20:09:25,267 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:09:25,267 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:09:25,285 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:09:25,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:09:25,479 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:09:25,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:09:25,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1914847655, now seen corresponding path program 1 times [2022-11-02 20:09:25,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:09:25,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1652644990] [2022-11-02 20:09:25,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:09:25,483 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:09:25,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:09:25,486 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:09:25,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-02 20:09:25,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:09:25,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:09:25,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:09:25,854 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:09:25,854 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:09:25,855 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:09:25,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1652644990] [2022-11-02 20:09:25,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1652644990] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:09:25,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:09:25,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:09:25,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183658695] [2022-11-02 20:09:25,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:09:25,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:09:25,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:09:25,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:09:25,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:09:25,859 INFO L87 Difference]: Start difference. First operand 93 states and 135 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 20:09:25,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:09:25,912 INFO L93 Difference]: Finished difference Result 355 states and 522 transitions. [2022-11-02 20:09:25,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:09:25,913 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-11-02 20:09:25,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:09:25,915 INFO L225 Difference]: With dead ends: 355 [2022-11-02 20:09:25,915 INFO L226 Difference]: Without dead ends: 266 [2022-11-02 20:09:25,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:09:25,917 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 378 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:09:25,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [378 Valid, 510 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:09:25,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-11-02 20:09:25,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 95. [2022-11-02 20:09:25,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.4574468085106382) internal successors, (137), 94 states have internal predecessors, (137), 0 states have call successors, (0), 0 states 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 20:09:25,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 137 transitions. [2022-11-02 20:09:25,931 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 137 transitions. Word has length 92 [2022-11-02 20:09:25,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:09:25,931 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 137 transitions. [2022-11-02 20:09:25,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 20:09:25,932 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 137 transitions. [2022-11-02 20:09:25,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-02 20:09:25,934 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:09:25,934 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:09:25,953 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:09:26,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:09:26,148 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:09:26,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:09:26,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1328571433, now seen corresponding path program 1 times [2022-11-02 20:09:26,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:09:26,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1185356989] [2022-11-02 20:09:26,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:09:26,150 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:09:26,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:09:26,152 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:09:26,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-02 20:09:26,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:09:26,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:09:26,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:09:26,521 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:09:26,521 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:09:26,521 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:09:26,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1185356989] [2022-11-02 20:09:26,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1185356989] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:09:26,522 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:09:26,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:09:26,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755208422] [2022-11-02 20:09:26,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:09:26,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:09:26,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:09:26,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:09:26,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:09:26,525 INFO L87 Difference]: Start difference. First operand 95 states and 137 transitions. Second operand has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 20:09:26,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:09:26,708 INFO L93 Difference]: Finished difference Result 274 states and 400 transitions. [2022-11-02 20:09:26,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:09:26,709 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-11-02 20:09:26,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:09:26,710 INFO L225 Difference]: With dead ends: 274 [2022-11-02 20:09:26,711 INFO L226 Difference]: Without dead ends: 185 [2022-11-02 20:09:26,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:09:26,712 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 379 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:09:26,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [379 Valid, 598 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:09:26,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2022-11-02 20:09:26,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 97. [2022-11-02 20:09:26,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 1.4479166666666667) internal successors, (139), 96 states have internal predecessors, (139), 0 states have call successors, (0), 0 states 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 20:09:26,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 139 transitions. [2022-11-02 20:09:26,721 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 139 transitions. Word has length 92 [2022-11-02 20:09:26,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:09:26,722 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 139 transitions. [2022-11-02 20:09:26,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 20:09:26,722 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 139 transitions. [2022-11-02 20:09:26,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-02 20:09:26,724 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:09:26,724 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:09:26,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:09:26,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:09:26,937 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:09:26,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:09:26,938 INFO L85 PathProgramCache]: Analyzing trace with hash -547911385, now seen corresponding path program 1 times [2022-11-02 20:09:26,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:09:26,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [798580252] [2022-11-02 20:09:26,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:09:26,939 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:09:26,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:09:26,940 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:09:26,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-02 20:09:27,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:09:27,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:09:27,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:09:27,241 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:09:27,242 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:09:27,242 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:09:27,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [798580252] [2022-11-02 20:09:27,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [798580252] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:09:27,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:09:27,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:09:27,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005389853] [2022-11-02 20:09:27,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:09:27,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:09:27,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:09:27,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:09:27,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:09:27,246 INFO L87 Difference]: Start difference. First operand 97 states and 139 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 20:09:27,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:09:27,290 INFO L93 Difference]: Finished difference Result 355 states and 520 transitions. [2022-11-02 20:09:27,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:09:27,291 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-11-02 20:09:27,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:09:27,292 INFO L225 Difference]: With dead ends: 355 [2022-11-02 20:09:27,292 INFO L226 Difference]: Without dead ends: 266 [2022-11-02 20:09:27,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:09:27,295 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 366 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:09:27,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [366 Valid, 502 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:09:27,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-11-02 20:09:27,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 99. [2022-11-02 20:09:27,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 1.4387755102040816) internal successors, (141), 98 states have internal predecessors, (141), 0 states have call successors, (0), 0 states 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 20:09:27,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 141 transitions. [2022-11-02 20:09:27,304 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 141 transitions. Word has length 92 [2022-11-02 20:09:27,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:09:27,304 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 141 transitions. [2022-11-02 20:09:27,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 20:09:27,305 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 141 transitions. [2022-11-02 20:09:27,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-02 20:09:27,306 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:09:27,306 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:09:27,339 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:09:27,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:09:27,533 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:09:27,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:09:27,534 INFO L85 PathProgramCache]: Analyzing trace with hash 776944809, now seen corresponding path program 1 times [2022-11-02 20:09:27,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:09:27,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [734135488] [2022-11-02 20:09:27,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:09:27,536 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:09:27,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:09:27,537 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:09:27,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-02 20:09:27,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:09:27,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:09:27,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:09:27,844 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:09:27,844 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:09:27,844 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:09:27,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [734135488] [2022-11-02 20:09:27,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [734135488] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:09:27,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:09:27,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:09:27,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157829264] [2022-11-02 20:09:27,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:09:27,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:09:27,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:09:27,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:09:27,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:09:27,848 INFO L87 Difference]: Start difference. First operand 99 states and 141 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 20:09:27,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:09:27,889 INFO L93 Difference]: Finished difference Result 355 states and 519 transitions. [2022-11-02 20:09:27,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:09:27,890 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-11-02 20:09:27,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:09:27,892 INFO L225 Difference]: With dead ends: 355 [2022-11-02 20:09:27,892 INFO L226 Difference]: Without dead ends: 266 [2022-11-02 20:09:27,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:09:27,894 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 360 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:09:27,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 501 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:09:27,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-11-02 20:09:27,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 101. [2022-11-02 20:09:27,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 1.43) internal successors, (143), 100 states have internal predecessors, (143), 0 states have call successors, (0), 0 states 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 20:09:27,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 143 transitions. [2022-11-02 20:09:27,902 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 143 transitions. Word has length 92 [2022-11-02 20:09:27,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:09:27,903 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 143 transitions. [2022-11-02 20:09:27,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 20:09:27,903 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 143 transitions. [2022-11-02 20:09:27,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-02 20:09:27,917 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:09:27,917 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:09:27,932 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:09:28,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:09:28,131 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:09:28,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:09:28,132 INFO L85 PathProgramCache]: Analyzing trace with hash -280893269, now seen corresponding path program 1 times [2022-11-02 20:09:28,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:09:28,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1868338433] [2022-11-02 20:09:28,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:09:28,133 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:09:28,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:09:28,134 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:09:28,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-02 20:09:28,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:09:28,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:09:28,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:09:28,421 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:09:28,421 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:09:28,422 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:09:28,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1868338433] [2022-11-02 20:09:28,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1868338433] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:09:28,422 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:09:28,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:09:28,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648171621] [2022-11-02 20:09:28,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:09:28,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:09:28,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:09:28,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:09:28,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:09:28,425 INFO L87 Difference]: Start difference. First operand 101 states and 143 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 20:09:28,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:09:28,465 INFO L93 Difference]: Finished difference Result 355 states and 518 transitions. [2022-11-02 20:09:28,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:09:28,466 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-11-02 20:09:28,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:09:28,468 INFO L225 Difference]: With dead ends: 355 [2022-11-02 20:09:28,468 INFO L226 Difference]: Without dead ends: 266 [2022-11-02 20:09:28,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:09:28,470 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 349 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:09:28,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [349 Valid, 500 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:09:28,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-11-02 20:09:28,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 105. [2022-11-02 20:09:28,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 104 states have (on average 1.4230769230769231) internal successors, (148), 104 states have internal predecessors, (148), 0 states have call successors, (0), 0 states 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 20:09:28,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 148 transitions. [2022-11-02 20:09:28,477 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 148 transitions. Word has length 92 [2022-11-02 20:09:28,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:09:28,478 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 148 transitions. [2022-11-02 20:09:28,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 20:09:28,478 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 148 transitions. [2022-11-02 20:09:28,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-02 20:09:28,480 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:09:28,480 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:09:28,498 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-02 20:09:28,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:09:28,694 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:09:28,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:09:28,694 INFO L85 PathProgramCache]: Analyzing trace with hash -253827667, now seen corresponding path program 1 times [2022-11-02 20:09:28,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:09:28,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [617343185] [2022-11-02 20:09:28,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:09:28,695 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:09:28,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:09:28,699 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:09:28,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-02 20:09:28,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:09:28,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:09:28,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:09:29,026 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:09:29,026 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:09:29,027 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:09:29,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [617343185] [2022-11-02 20:09:29,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [617343185] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:09:29,028 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:09:29,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:09:29,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839929944] [2022-11-02 20:09:29,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:09:29,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:09:29,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:09:29,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:09:29,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:09:29,032 INFO L87 Difference]: Start difference. First operand 105 states and 148 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 20:09:29,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:09:29,073 INFO L93 Difference]: Finished difference Result 355 states and 517 transitions. [2022-11-02 20:09:29,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:09:29,074 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-11-02 20:09:29,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:09:29,075 INFO L225 Difference]: With dead ends: 355 [2022-11-02 20:09:29,075 INFO L226 Difference]: Without dead ends: 266 [2022-11-02 20:09:29,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:09:29,077 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 338 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:09:29,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [338 Valid, 499 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:09:29,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-11-02 20:09:29,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 109. [2022-11-02 20:09:29,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 1.4166666666666667) internal successors, (153), 108 states have internal predecessors, (153), 0 states have call successors, (0), 0 states 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 20:09:29,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 153 transitions. [2022-11-02 20:09:29,094 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 153 transitions. Word has length 92 [2022-11-02 20:09:29,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:09:29,094 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 153 transitions. [2022-11-02 20:09:29,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 20:09:29,095 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 153 transitions. [2022-11-02 20:09:29,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-02 20:09:29,101 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:09:29,106 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:09:29,125 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-02 20:09:29,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:09:29,320 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:09:29,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:09:29,321 INFO L85 PathProgramCache]: Analyzing trace with hash 2130097071, now seen corresponding path program 1 times [2022-11-02 20:09:29,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:09:29,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [675410424] [2022-11-02 20:09:29,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:09:29,322 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:09:29,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:09:29,323 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:09:29,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-02 20:09:29,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:09:29,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:09:29,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:09:29,629 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:09:29,630 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:09:29,630 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:09:29,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [675410424] [2022-11-02 20:09:29,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [675410424] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:09:29,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:09:29,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:09:29,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344265914] [2022-11-02 20:09:29,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:09:29,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:09:29,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:09:29,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:09:29,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:09:29,634 INFO L87 Difference]: Start difference. First operand 109 states and 153 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 20:09:29,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:09:29,677 INFO L93 Difference]: Finished difference Result 355 states and 516 transitions. [2022-11-02 20:09:29,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:09:29,679 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-11-02 20:09:29,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:09:29,682 INFO L225 Difference]: With dead ends: 355 [2022-11-02 20:09:29,682 INFO L226 Difference]: Without dead ends: 266 [2022-11-02 20:09:29,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:09:29,684 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 327 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:09:29,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [327 Valid, 498 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:09:29,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-11-02 20:09:29,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 113. [2022-11-02 20:09:29,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 1.4107142857142858) internal successors, (158), 112 states have internal predecessors, (158), 0 states have call successors, (0), 0 states 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 20:09:29,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 158 transitions. [2022-11-02 20:09:29,693 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 158 transitions. Word has length 92 [2022-11-02 20:09:29,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:09:29,693 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 158 transitions. [2022-11-02 20:09:29,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 20:09:29,694 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 158 transitions. [2022-11-02 20:09:29,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-02 20:09:29,695 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:09:29,695 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:09:29,720 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-02 20:09:29,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:09:29,909 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:09:29,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:09:29,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1637470897, now seen corresponding path program 1 times [2022-11-02 20:09:29,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:09:29,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [164277821] [2022-11-02 20:09:29,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:09:29,911 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:09:29,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:09:29,912 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:09:29,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-02 20:09:30,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:09:30,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:09:30,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:09:30,276 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:09:30,276 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:09:30,277 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:09:30,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [164277821] [2022-11-02 20:09:30,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [164277821] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:09:30,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:09:30,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:09:30,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338722352] [2022-11-02 20:09:30,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:09:30,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:09:30,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:09:30,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:09:30,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:09:30,279 INFO L87 Difference]: Start difference. First operand 113 states and 158 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 20:09:30,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:09:30,389 INFO L93 Difference]: Finished difference Result 355 states and 515 transitions. [2022-11-02 20:09:30,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:09:30,390 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-11-02 20:09:30,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:09:30,391 INFO L225 Difference]: With dead ends: 355 [2022-11-02 20:09:30,391 INFO L226 Difference]: Without dead ends: 266 [2022-11-02 20:09:30,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:09:30,392 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 321 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:09:30,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [321 Valid, 464 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:09:30,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-11-02 20:09:30,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 115. [2022-11-02 20:09:30,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 114 states have (on average 1.4035087719298245) internal successors, (160), 114 states have internal predecessors, (160), 0 states have call successors, (0), 0 states 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 20:09:30,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 160 transitions. [2022-11-02 20:09:30,398 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 160 transitions. Word has length 92 [2022-11-02 20:09:30,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:09:30,398 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 160 transitions. [2022-11-02 20:09:30,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 20:09:30,399 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 160 transitions. [2022-11-02 20:09:30,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-02 20:09:30,400 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:09:30,400 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:09:30,418 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-02 20:09:30,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:09:30,613 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:09:30,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:09:30,614 INFO L85 PathProgramCache]: Analyzing trace with hash 421317171, now seen corresponding path program 1 times [2022-11-02 20:09:30,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:09:30,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [824295743] [2022-11-02 20:09:30,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:09:30,615 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:09:30,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:09:30,616 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:09:30,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-02 20:09:30,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:09:30,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:09:30,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:09:31,029 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:09:31,030 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:09:31,030 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:09:31,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [824295743] [2022-11-02 20:09:31,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [824295743] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:09:31,031 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:09:31,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:09:31,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858129572] [2022-11-02 20:09:31,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:09:31,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:09:31,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:09:31,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:09:31,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:09:31,033 INFO L87 Difference]: Start difference. First operand 115 states and 160 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 20:09:31,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:09:31,128 INFO L93 Difference]: Finished difference Result 380 states and 549 transitions. [2022-11-02 20:09:31,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:09:31,129 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-11-02 20:09:31,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:09:31,131 INFO L225 Difference]: With dead ends: 380 [2022-11-02 20:09:31,132 INFO L226 Difference]: Without dead ends: 291 [2022-11-02 20:09:31,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:09:31,133 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 479 mSDsluCounter, 591 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 744 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:09:31,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [479 Valid, 744 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:09:31,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2022-11-02 20:09:31,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 117. [2022-11-02 20:09:31,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 116 states have (on average 1.396551724137931) internal successors, (162), 116 states have internal predecessors, (162), 0 states have call successors, (0), 0 states 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 20:09:31,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 162 transitions. [2022-11-02 20:09:31,140 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 162 transitions. Word has length 92 [2022-11-02 20:09:31,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:09:31,142 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 162 transitions. [2022-11-02 20:09:31,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 20:09:31,143 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 162 transitions. [2022-11-02 20:09:31,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-02 20:09:31,144 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:09:31,144 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:09:31,163 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-02 20:09:31,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:09:31,363 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:09:31,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:09:31,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1264862667, now seen corresponding path program 1 times [2022-11-02 20:09:31,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:09:31,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1648287924] [2022-11-02 20:09:31,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:09:31,364 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:09:31,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:09:31,365 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:09:31,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-02 20:09:31,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:09:31,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:09:31,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:09:31,651 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:09:31,652 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:09:31,652 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:09:31,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1648287924] [2022-11-02 20:09:31,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1648287924] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:09:31,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:09:31,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:09:31,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876701507] [2022-11-02 20:09:31,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:09:31,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:09:31,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:09:31,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:09:31,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:09:31,655 INFO L87 Difference]: Start difference. First operand 117 states and 162 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 20:09:31,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:09:31,714 INFO L93 Difference]: Finished difference Result 355 states and 513 transitions. [2022-11-02 20:09:31,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:09:31,715 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-11-02 20:09:31,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:09:31,716 INFO L225 Difference]: With dead ends: 355 [2022-11-02 20:09:31,716 INFO L226 Difference]: Without dead ends: 266 [2022-11-02 20:09:31,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:09:31,717 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 309 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:09:31,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 483 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:09:31,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-11-02 20:09:31,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 119. [2022-11-02 20:09:31,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 1.3898305084745763) internal successors, (164), 118 states have internal predecessors, (164), 0 states have call successors, (0), 0 states 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 20:09:31,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 164 transitions. [2022-11-02 20:09:31,723 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 164 transitions. Word has length 92 [2022-11-02 20:09:31,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:09:31,723 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 164 transitions. [2022-11-02 20:09:31,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 20:09:31,724 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 164 transitions. [2022-11-02 20:09:31,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-02 20:09:31,739 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:09:31,740 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:09:31,758 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-02 20:09:31,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:09:31,940 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:09:31,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:09:31,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1682259273, now seen corresponding path program 1 times [2022-11-02 20:09:31,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:09:31,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [608904551] [2022-11-02 20:09:31,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:09:31,942 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:09:31,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:09:31,943 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:09:31,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-02 20:09:32,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:09:32,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:09:32,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:09:32,298 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:09:32,298 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:09:32,299 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:09:32,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [608904551] [2022-11-02 20:09:32,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [608904551] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:09:32,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:09:32,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:09:32,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844119590] [2022-11-02 20:09:32,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:09:32,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:09:32,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:09:32,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:09:32,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:09:32,301 INFO L87 Difference]: Start difference. First operand 119 states and 164 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 20:09:32,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:09:32,388 INFO L93 Difference]: Finished difference Result 380 states and 547 transitions. [2022-11-02 20:09:32,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:09:32,389 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-11-02 20:09:32,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:09:32,390 INFO L225 Difference]: With dead ends: 380 [2022-11-02 20:09:32,390 INFO L226 Difference]: Without dead ends: 291 [2022-11-02 20:09:32,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:09:32,391 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 465 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 736 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:09:32,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [465 Valid, 736 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:09:32,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2022-11-02 20:09:32,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 121. [2022-11-02 20:09:32,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 120 states have (on average 1.3833333333333333) internal successors, (166), 120 states have internal predecessors, (166), 0 states have call successors, (0), 0 states 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 20:09:32,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 166 transitions. [2022-11-02 20:09:32,398 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 166 transitions. Word has length 92 [2022-11-02 20:09:32,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:09:32,399 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 166 transitions. [2022-11-02 20:09:32,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 20:09:32,399 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 166 transitions. [2022-11-02 20:09:32,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-02 20:09:32,400 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:09:32,400 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:09:32,419 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-02 20:09:32,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:09:32,614 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:09:32,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:09:32,615 INFO L85 PathProgramCache]: Analyzing trace with hash 279315385, now seen corresponding path program 1 times [2022-11-02 20:09:32,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:09:32,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1276546914] [2022-11-02 20:09:32,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:09:32,615 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:09:32,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:09:32,616 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:09:32,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-02 20:09:32,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:09:32,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:09:32,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:09:32,915 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:09:32,915 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:09:32,916 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:09:32,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1276546914] [2022-11-02 20:09:32,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1276546914] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:09:32,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:09:32,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:09:32,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110220472] [2022-11-02 20:09:32,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:09:32,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:09:32,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:09:32,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:09:32,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:09:32,918 INFO L87 Difference]: Start difference. First operand 121 states and 166 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 20:09:32,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:09:32,979 INFO L93 Difference]: Finished difference Result 355 states and 511 transitions. [2022-11-02 20:09:32,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:09:32,980 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-11-02 20:09:32,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:09:32,981 INFO L225 Difference]: With dead ends: 355 [2022-11-02 20:09:32,981 INFO L226 Difference]: Without dead ends: 266 [2022-11-02 20:09:32,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:09:32,982 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 297 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:09:32,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 481 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:09:32,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-11-02 20:09:32,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 123. [2022-11-02 20:09:32,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 122 states have (on average 1.3770491803278688) internal successors, (168), 122 states have internal predecessors, (168), 0 states have call successors, (0), 0 states 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 20:09:32,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 168 transitions. [2022-11-02 20:09:32,988 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 168 transitions. Word has length 92 [2022-11-02 20:09:32,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:09:32,988 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 168 transitions. [2022-11-02 20:09:32,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 20:09:32,989 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 168 transitions. [2022-11-02 20:09:32,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-02 20:09:32,989 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:09:32,990 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:09:33,014 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-02 20:09:33,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:09:33,205 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:09:33,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:09:33,205 INFO L85 PathProgramCache]: Analyzing trace with hash 840015163, now seen corresponding path program 1 times [2022-11-02 20:09:33,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:09:33,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [715237764] [2022-11-02 20:09:33,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:09:33,206 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:09:33,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:09:33,208 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:09:33,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-02 20:09:33,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:09:33,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:09:33,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:09:33,508 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:09:33,509 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:09:33,509 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:09:33,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [715237764] [2022-11-02 20:09:33,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [715237764] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:09:33,510 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:09:33,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:09:33,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422046104] [2022-11-02 20:09:33,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:09:33,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:09:33,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:09:33,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:09:33,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:09:33,512 INFO L87 Difference]: Start difference. First operand 123 states and 168 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 20:09:33,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:09:33,565 INFO L93 Difference]: Finished difference Result 355 states and 510 transitions. [2022-11-02 20:09:33,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:09:33,566 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-11-02 20:09:33,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:09:33,567 INFO L225 Difference]: With dead ends: 355 [2022-11-02 20:09:33,567 INFO L226 Difference]: Without dead ends: 266 [2022-11-02 20:09:33,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:09:33,569 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 291 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:09:33,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [291 Valid, 480 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:09:33,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-11-02 20:09:33,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 125. [2022-11-02 20:09:33,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 124 states have (on average 1.3709677419354838) internal successors, (170), 124 states have internal predecessors, (170), 0 states have call successors, (0), 0 states 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 20:09:33,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 170 transitions. [2022-11-02 20:09:33,575 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 170 transitions. Word has length 92 [2022-11-02 20:09:33,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:09:33,577 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 170 transitions. [2022-11-02 20:09:33,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 20:09:33,577 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 170 transitions. [2022-11-02 20:09:33,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-02 20:09:33,578 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:09:33,578 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:09:33,595 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-02 20:09:33,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:09:33,794 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:09:33,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:09:33,794 INFO L85 PathProgramCache]: Analyzing trace with hash 2100932413, now seen corresponding path program 1 times [2022-11-02 20:09:33,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:09:33,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1697052284] [2022-11-02 20:09:33,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:09:33,795 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:09:33,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:09:33,797 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:09:33,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-02 20:09:34,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:09:34,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:09:34,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:09:34,126 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:09:34,126 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:09:34,127 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:09:34,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1697052284] [2022-11-02 20:09:34,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1697052284] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:09:34,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:09:34,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:09:34,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389660161] [2022-11-02 20:09:34,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:09:34,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:09:34,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:09:34,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:09:34,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:09:34,132 INFO L87 Difference]: Start difference. First operand 125 states and 170 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 20:09:34,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:09:34,160 INFO L93 Difference]: Finished difference Result 355 states and 509 transitions. [2022-11-02 20:09:34,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:09:34,161 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-11-02 20:09:34,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:09:34,162 INFO L225 Difference]: With dead ends: 355 [2022-11-02 20:09:34,162 INFO L226 Difference]: Without dead ends: 266 [2022-11-02 20:09:34,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:09:34,165 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 285 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:09:34,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 500 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:09:34,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-11-02 20:09:34,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 127. [2022-11-02 20:09:34,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.3650793650793651) internal successors, (172), 126 states have internal predecessors, (172), 0 states have call successors, (0), 0 states 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 20:09:34,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 172 transitions. [2022-11-02 20:09:34,174 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 172 transitions. Word has length 92 [2022-11-02 20:09:34,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:09:34,175 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 172 transitions. [2022-11-02 20:09:34,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 20:09:34,175 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 172 transitions. [2022-11-02 20:09:34,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-02 20:09:34,176 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:09:34,176 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:09:34,194 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-02 20:09:34,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:09:34,392 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:09:34,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:09:34,393 INFO L85 PathProgramCache]: Analyzing trace with hash -807249473, now seen corresponding path program 1 times [2022-11-02 20:09:34,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:09:34,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1779405242] [2022-11-02 20:09:34,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:09:34,397 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:09:34,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:09:34,398 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:09:34,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-02 20:09:34,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:09:34,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:09:34,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:09:34,714 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:09:34,715 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:09:34,715 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:09:34,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1779405242] [2022-11-02 20:09:34,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1779405242] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:09:34,715 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:09:34,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:09:34,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659555617] [2022-11-02 20:09:34,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:09:34,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:09:34,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:09:34,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:09:34,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:09:34,717 INFO L87 Difference]: Start difference. First operand 127 states and 172 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 20:09:34,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:09:34,747 INFO L93 Difference]: Finished difference Result 355 states and 508 transitions. [2022-11-02 20:09:34,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:09:34,749 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-11-02 20:09:34,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:09:34,750 INFO L225 Difference]: With dead ends: 355 [2022-11-02 20:09:34,750 INFO L226 Difference]: Without dead ends: 266 [2022-11-02 20:09:34,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:09:34,752 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 269 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:09:34,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 496 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:09:34,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-11-02 20:09:34,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 133. [2022-11-02 20:09:34,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 1.3636363636363635) internal successors, (180), 132 states have internal predecessors, (180), 0 states have call successors, (0), 0 states 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 20:09:34,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 180 transitions. [2022-11-02 20:09:34,758 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 180 transitions. Word has length 92 [2022-11-02 20:09:34,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:09:34,759 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 180 transitions. [2022-11-02 20:09:34,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 20:09:34,759 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 180 transitions. [2022-11-02 20:09:34,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-02 20:09:34,760 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:09:34,760 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:09:34,778 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-02 20:09:34,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:09:34,979 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:09:34,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:09:34,979 INFO L85 PathProgramCache]: Analyzing trace with hash -822768191, now seen corresponding path program 1 times [2022-11-02 20:09:34,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:09:34,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1100585446] [2022-11-02 20:09:34,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:09:34,980 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:09:34,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:09:34,981 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:09:34,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-02 20:09:35,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:09:35,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:09:35,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:09:35,322 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:09:35,323 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:09:35,323 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:09:35,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1100585446] [2022-11-02 20:09:35,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1100585446] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:09:35,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:09:35,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:09:35,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856969582] [2022-11-02 20:09:35,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:09:35,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:09:35,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:09:35,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:09:35,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:09:35,325 INFO L87 Difference]: Start difference. First operand 133 states and 180 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 20:09:35,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:09:35,359 INFO L93 Difference]: Finished difference Result 355 states and 507 transitions. [2022-11-02 20:09:35,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:09:35,360 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-11-02 20:09:35,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:09:35,361 INFO L225 Difference]: With dead ends: 355 [2022-11-02 20:09:35,362 INFO L226 Difference]: Without dead ends: 266 [2022-11-02 20:09:35,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:09:35,363 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 263 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:09:35,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 495 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:09:35,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-11-02 20:09:35,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 135. [2022-11-02 20:09:35,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 134 states have (on average 1.3582089552238805) internal successors, (182), 134 states have internal predecessors, (182), 0 states have call successors, (0), 0 states 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 20:09:35,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 182 transitions. [2022-11-02 20:09:35,368 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 182 transitions. Word has length 92 [2022-11-02 20:09:35,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:09:35,369 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 182 transitions. [2022-11-02 20:09:35,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 20:09:35,369 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 182 transitions. [2022-11-02 20:09:35,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-02 20:09:35,370 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:09:35,370 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:09:35,390 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-02 20:09:35,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:09:35,590 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:09:35,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:09:35,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1175856573, now seen corresponding path program 1 times [2022-11-02 20:09:35,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:09:35,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1577954425] [2022-11-02 20:09:35,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:09:35,592 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:09:35,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:09:35,593 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:09:35,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-02 20:09:35,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:09:35,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:09:35,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:09:35,906 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:09:35,906 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:09:35,906 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:09:35,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1577954425] [2022-11-02 20:09:35,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1577954425] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:09:35,907 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:09:35,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:09:35,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880043102] [2022-11-02 20:09:35,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:09:35,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:09:35,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:09:35,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:09:35,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:09:35,912 INFO L87 Difference]: Start difference. First operand 135 states and 182 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 20:09:35,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:09:35,956 INFO L93 Difference]: Finished difference Result 355 states and 506 transitions. [2022-11-02 20:09:35,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:09:35,957 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-11-02 20:09:35,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:09:35,958 INFO L225 Difference]: With dead ends: 355 [2022-11-02 20:09:35,958 INFO L226 Difference]: Without dead ends: 266 [2022-11-02 20:09:35,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:09:35,959 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 252 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:09:35,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 488 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:09:35,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-11-02 20:09:35,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 139. [2022-11-02 20:09:35,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 138 states have (on average 1.355072463768116) internal successors, (187), 138 states have internal predecessors, (187), 0 states have call successors, (0), 0 states 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 20:09:35,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 187 transitions. [2022-11-02 20:09:35,977 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 187 transitions. Word has length 92 [2022-11-02 20:09:35,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:09:35,977 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 187 transitions. [2022-11-02 20:09:35,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 20:09:35,978 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 187 transitions. [2022-11-02 20:09:35,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-02 20:09:35,979 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:09:35,979 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:09:35,993 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-02 20:09:36,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:09:36,189 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:09:36,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:09:36,189 INFO L85 PathProgramCache]: Analyzing trace with hash -2073249851, now seen corresponding path program 1 times [2022-11-02 20:09:36,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:09:36,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1143565468] [2022-11-02 20:09:36,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:09:36,190 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:09:36,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:09:36,191 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:09:36,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-02 20:09:36,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:09:36,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:09:36,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:09:36,528 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:09:36,528 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:09:36,528 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:09:36,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1143565468] [2022-11-02 20:09:36,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1143565468] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:09:36,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:09:36,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:09:36,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889352128] [2022-11-02 20:09:36,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:09:36,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:09:36,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:09:36,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:09:36,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:09:36,532 INFO L87 Difference]: Start difference. First operand 139 states and 187 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 20:09:36,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:09:36,566 INFO L93 Difference]: Finished difference Result 355 states and 505 transitions. [2022-11-02 20:09:36,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:09:36,567 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-11-02 20:09:36,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:09:36,568 INFO L225 Difference]: With dead ends: 355 [2022-11-02 20:09:36,569 INFO L226 Difference]: Without dead ends: 266 [2022-11-02 20:09:36,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:09:36,570 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 246 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:09:36,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 493 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:09:36,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-11-02 20:09:36,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 141. [2022-11-02 20:09:36,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 140 states have (on average 1.35) internal successors, (189), 140 states have internal predecessors, (189), 0 states have call successors, (0), 0 states 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 20:09:36,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 189 transitions. [2022-11-02 20:09:36,575 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 189 transitions. Word has length 92 [2022-11-02 20:09:36,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:09:36,576 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 189 transitions. [2022-11-02 20:09:36,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 20:09:36,576 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 189 transitions. [2022-11-02 20:09:36,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-02 20:09:36,577 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:09:36,577 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:09:36,593 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-02 20:09:36,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:09:36,793 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:09:36,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:09:36,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1649603129, now seen corresponding path program 1 times [2022-11-02 20:09:36,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:09:36,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1204445573] [2022-11-02 20:09:36,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:09:36,794 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:09:36,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:09:36,795 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:09:36,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-02 20:09:37,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:09:37,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:09:37,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:09:37,261 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:09:37,262 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:09:37,262 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:09:37,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1204445573] [2022-11-02 20:09:37,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1204445573] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:09:37,262 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:09:37,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:09:37,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915691420] [2022-11-02 20:09:37,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:09:37,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:09:37,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:09:37,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:09:37,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:09:37,265 INFO L87 Difference]: Start difference. First operand 141 states and 189 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 20:09:37,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:09:37,380 INFO L93 Difference]: Finished difference Result 320 states and 452 transitions. [2022-11-02 20:09:37,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:09:37,381 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-11-02 20:09:37,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:09:37,382 INFO L225 Difference]: With dead ends: 320 [2022-11-02 20:09:37,383 INFO L226 Difference]: Without dead ends: 231 [2022-11-02 20:09:37,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:09:37,384 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 317 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:09:37,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [317 Valid, 527 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:09:37,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2022-11-02 20:09:37,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 143. [2022-11-02 20:09:37,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 1.3450704225352113) internal successors, (191), 142 states have internal predecessors, (191), 0 states have call successors, (0), 0 states 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 20:09:37,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 191 transitions. [2022-11-02 20:09:37,389 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 191 transitions. Word has length 92 [2022-11-02 20:09:37,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:09:37,390 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 191 transitions. [2022-11-02 20:09:37,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 20:09:37,390 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 191 transitions. [2022-11-02 20:09:37,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-02 20:09:37,391 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:09:37,391 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:09:37,405 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-02 20:09:37,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:09:37,605 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:09:37,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:09:37,606 INFO L85 PathProgramCache]: Analyzing trace with hash 195764037, now seen corresponding path program 1 times [2022-11-02 20:09:37,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:09:37,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1383213024] [2022-11-02 20:09:37,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:09:37,607 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:09:37,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:09:37,608 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:09:37,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-02 20:09:37,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:09:37,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:09:37,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:09:37,923 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:09:37,923 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:09:37,924 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:09:37,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1383213024] [2022-11-02 20:09:37,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1383213024] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:09:37,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:09:37,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:09:37,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984954552] [2022-11-02 20:09:37,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:09:37,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:09:37,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:09:37,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:09:37,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:09:37,928 INFO L87 Difference]: Start difference. First operand 143 states and 191 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 20:09:37,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:09:37,985 INFO L93 Difference]: Finished difference Result 355 states and 503 transitions. [2022-11-02 20:09:37,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:09:37,986 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-11-02 20:09:37,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:09:37,987 INFO L225 Difference]: With dead ends: 355 [2022-11-02 20:09:37,987 INFO L226 Difference]: Without dead ends: 266 [2022-11-02 20:09:37,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:09:37,989 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 234 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:09:37,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 485 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:09:37,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-11-02 20:09:37,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 145. [2022-11-02 20:09:37,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.3402777777777777) internal successors, (193), 144 states have internal predecessors, (193), 0 states have call successors, (0), 0 states 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 20:09:37,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 193 transitions. [2022-11-02 20:09:37,997 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 193 transitions. Word has length 92 [2022-11-02 20:09:37,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:09:37,997 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 193 transitions. [2022-11-02 20:09:37,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 20:09:37,997 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 193 transitions. [2022-11-02 20:09:37,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-02 20:09:37,998 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:09:37,999 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:09:38,017 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-02 20:09:38,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:09:38,212 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:09:38,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:09:38,213 INFO L85 PathProgramCache]: Analyzing trace with hash 855295559, now seen corresponding path program 1 times [2022-11-02 20:09:38,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:09:38,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [776374375] [2022-11-02 20:09:38,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:09:38,214 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:09:38,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:09:38,215 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:09:38,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-02 20:09:38,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:09:38,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:09:38,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:09:38,669 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:09:38,669 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:09:38,669 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:09:38,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [776374375] [2022-11-02 20:09:38,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [776374375] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:09:38,670 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:09:38,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:09:38,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849190681] [2022-11-02 20:09:38,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:09:38,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:09:38,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:09:38,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:09:38,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:09:38,672 INFO L87 Difference]: Start difference. First operand 145 states and 193 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 20:09:38,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:09:38,758 INFO L93 Difference]: Finished difference Result 355 states and 502 transitions. [2022-11-02 20:09:38,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:09:38,759 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-11-02 20:09:38,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:09:38,760 INFO L225 Difference]: With dead ends: 355 [2022-11-02 20:09:38,760 INFO L226 Difference]: Without dead ends: 266 [2022-11-02 20:09:38,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:09:38,761 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 228 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:09:38,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 451 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:09:38,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-11-02 20:09:38,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 147. [2022-11-02 20:09:38,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 1.3356164383561644) internal successors, (195), 146 states have internal predecessors, (195), 0 states have call successors, (0), 0 states 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 20:09:38,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 195 transitions. [2022-11-02 20:09:38,767 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 195 transitions. Word has length 92 [2022-11-02 20:09:38,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:09:38,767 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 195 transitions. [2022-11-02 20:09:38,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 20:09:38,768 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 195 transitions. [2022-11-02 20:09:38,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-02 20:09:38,768 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:09:38,769 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:09:38,787 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-02 20:09:38,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:09:38,982 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:09:38,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:09:38,982 INFO L85 PathProgramCache]: Analyzing trace with hash 11290057, now seen corresponding path program 1 times [2022-11-02 20:09:38,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:09:38,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [881092170] [2022-11-02 20:09:38,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:09:38,983 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:09:38,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:09:38,985 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:09:39,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-02 20:09:39,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:09:39,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:09:39,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:09:39,387 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:09:39,387 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:09:39,388 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:09:39,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [881092170] [2022-11-02 20:09:39,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [881092170] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:09:39,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:09:39,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:09:39,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602257299] [2022-11-02 20:09:39,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:09:39,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:09:39,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:09:39,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:09:39,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:09:39,390 INFO L87 Difference]: Start difference. First operand 147 states and 195 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 20:09:39,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:09:39,473 INFO L93 Difference]: Finished difference Result 380 states and 536 transitions. [2022-11-02 20:09:39,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:09:39,474 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-11-02 20:09:39,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:09:39,475 INFO L225 Difference]: With dead ends: 380 [2022-11-02 20:09:39,476 INFO L226 Difference]: Without dead ends: 291 [2022-11-02 20:09:39,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:09:39,477 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 373 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:09:39,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [373 Valid, 683 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:09:39,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2022-11-02 20:09:39,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 149. [2022-11-02 20:09:39,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 1.3310810810810811) internal successors, (197), 148 states have internal predecessors, (197), 0 states have call successors, (0), 0 states 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 20:09:39,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 197 transitions. [2022-11-02 20:09:39,482 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 197 transitions. Word has length 92 [2022-11-02 20:09:39,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:09:39,483 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 197 transitions. [2022-11-02 20:09:39,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 20:09:39,483 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 197 transitions. [2022-11-02 20:09:39,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-02 20:09:39,484 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:09:39,484 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:09:39,503 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-02 20:09:39,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:09:39,698 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:09:39,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:09:39,699 INFO L85 PathProgramCache]: Analyzing trace with hash -61096501, now seen corresponding path program 1 times [2022-11-02 20:09:39,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:09:39,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2126153916] [2022-11-02 20:09:39,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:09:39,699 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:09:39,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:09:39,700 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:09:39,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-02 20:09:39,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:09:39,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:09:39,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:09:40,057 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:09:40,057 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:09:40,057 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:09:40,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2126153916] [2022-11-02 20:09:40,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2126153916] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:09:40,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:09:40,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:09:40,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436098098] [2022-11-02 20:09:40,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:09:40,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:09:40,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:09:40,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:09:40,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:09:40,060 INFO L87 Difference]: Start difference. First operand 149 states and 197 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 20:09:40,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:09:40,113 INFO L93 Difference]: Finished difference Result 355 states and 500 transitions. [2022-11-02 20:09:40,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:09:40,114 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-11-02 20:09:40,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:09:40,115 INFO L225 Difference]: With dead ends: 355 [2022-11-02 20:09:40,115 INFO L226 Difference]: Without dead ends: 266 [2022-11-02 20:09:40,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:09:40,117 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 216 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:09:40,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 470 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:09:40,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-11-02 20:09:40,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 151. [2022-11-02 20:09:40,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 150 states have (on average 1.3266666666666667) internal successors, (199), 150 states have internal predecessors, (199), 0 states have call successors, (0), 0 states 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 20:09:40,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 199 transitions. [2022-11-02 20:09:40,122 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 199 transitions. Word has length 92 [2022-11-02 20:09:40,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:09:40,123 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 199 transitions. [2022-11-02 20:09:40,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 20:09:40,123 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 199 transitions. [2022-11-02 20:09:40,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-02 20:09:40,124 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:09:40,124 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:09:40,145 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-11-02 20:09:40,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:09:40,338 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:09:40,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:09:40,338 INFO L85 PathProgramCache]: Analyzing trace with hash 640503373, now seen corresponding path program 1 times [2022-11-02 20:09:40,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:09:40,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2069273128] [2022-11-02 20:09:40,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:09:40,339 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:09:40,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:09:40,340 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:09:40,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-02 20:09:40,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:09:40,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:09:40,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:09:40,740 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:09:40,740 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:09:40,740 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:09:40,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2069273128] [2022-11-02 20:09:40,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2069273128] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:09:40,741 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:09:40,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:09:40,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554009093] [2022-11-02 20:09:40,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:09:40,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:09:40,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:09:40,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:09:40,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:09:40,743 INFO L87 Difference]: Start difference. First operand 151 states and 199 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 20:09:40,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:09:40,823 INFO L93 Difference]: Finished difference Result 380 states and 534 transitions. [2022-11-02 20:09:40,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:09:40,824 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-11-02 20:09:40,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:09:40,826 INFO L225 Difference]: With dead ends: 380 [2022-11-02 20:09:40,826 INFO L226 Difference]: Without dead ends: 291 [2022-11-02 20:09:40,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:09:40,827 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 359 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 675 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:09:40,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [359 Valid, 675 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:09:40,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2022-11-02 20:09:40,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 153. [2022-11-02 20:09:40,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 152 states have (on average 1.3223684210526316) internal successors, (201), 152 states have internal predecessors, (201), 0 states have call successors, (0), 0 states 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 20:09:40,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 201 transitions. [2022-11-02 20:09:40,833 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 201 transitions. Word has length 92 [2022-11-02 20:09:40,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:09:40,833 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 201 transitions. [2022-11-02 20:09:40,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 20:09:40,834 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 201 transitions. [2022-11-02 20:09:40,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-02 20:09:40,835 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:09:40,835 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:09:40,849 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (26)] Ended with exit code 0 [2022-11-02 20:09:41,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:09:41,049 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:09:41,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:09:41,049 INFO L85 PathProgramCache]: Analyzing trace with hash 2026706767, now seen corresponding path program 1 times [2022-11-02 20:09:41,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:09:41,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1709975262] [2022-11-02 20:09:41,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:09:41,050 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:09:41,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:09:41,051 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:09:41,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-02 20:09:41,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:09:41,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:09:41,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:09:41,361 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:09:41,361 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:09:41,362 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:09:41,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1709975262] [2022-11-02 20:09:41,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1709975262] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:09:41,362 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:09:41,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:09:41,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073504516] [2022-11-02 20:09:41,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:09:41,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:09:41,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:09:41,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:09:41,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:09:41,367 INFO L87 Difference]: Start difference. First operand 153 states and 201 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 20:09:41,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:09:41,420 INFO L93 Difference]: Finished difference Result 355 states and 498 transitions. [2022-11-02 20:09:41,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:09:41,421 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-11-02 20:09:41,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:09:41,422 INFO L225 Difference]: With dead ends: 355 [2022-11-02 20:09:41,422 INFO L226 Difference]: Without dead ends: 266 [2022-11-02 20:09:41,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:09:41,423 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 204 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:09:41,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 468 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:09:41,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-11-02 20:09:41,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 155. [2022-11-02 20:09:41,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 154 states have (on average 1.3181818181818181) internal successors, (203), 154 states have internal predecessors, (203), 0 states have call successors, (0), 0 states 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 20:09:41,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 203 transitions. [2022-11-02 20:09:41,432 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 203 transitions. Word has length 92 [2022-11-02 20:09:41,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:09:41,433 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 203 transitions. [2022-11-02 20:09:41,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 20:09:41,433 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 203 transitions. [2022-11-02 20:09:41,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-02 20:09:41,434 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:09:41,434 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:09:41,453 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-11-02 20:09:41,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:09:41,648 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:09:41,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:09:41,648 INFO L85 PathProgramCache]: Analyzing trace with hash -345032495, now seen corresponding path program 1 times [2022-11-02 20:09:41,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:09:41,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1724560836] [2022-11-02 20:09:41,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:09:41,649 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:09:41,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:09:41,650 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:09:41,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-02 20:09:41,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:09:41,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:09:41,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:09:41,977 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:09:41,977 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:09:41,978 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:09:41,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1724560836] [2022-11-02 20:09:41,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1724560836] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:09:41,978 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:09:41,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:09:41,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534865424] [2022-11-02 20:09:41,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:09:41,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:09:41,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:09:41,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:09:41,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:09:41,980 INFO L87 Difference]: Start difference. First operand 155 states and 203 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 20:09:42,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:09:42,030 INFO L93 Difference]: Finished difference Result 355 states and 497 transitions. [2022-11-02 20:09:42,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:09:42,031 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-11-02 20:09:42,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:09:42,032 INFO L225 Difference]: With dead ends: 355 [2022-11-02 20:09:42,033 INFO L226 Difference]: Without dead ends: 266 [2022-11-02 20:09:42,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:09:42,035 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 198 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:09:42,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 467 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:09:42,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-11-02 20:09:42,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 157. [2022-11-02 20:09:42,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 156 states have (on average 1.314102564102564) internal successors, (205), 156 states have internal predecessors, (205), 0 states have call successors, (0), 0 states 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 20:09:42,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 205 transitions. [2022-11-02 20:09:42,041 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 205 transitions. Word has length 92 [2022-11-02 20:09:42,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:09:42,041 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 205 transitions. [2022-11-02 20:09:42,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 20:09:42,042 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 205 transitions. [2022-11-02 20:09:42,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-02 20:09:42,042 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:09:42,043 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:09:42,061 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-11-02 20:09:42,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:09:42,256 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:09:42,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:09:42,257 INFO L85 PathProgramCache]: Analyzing trace with hash -204483885, now seen corresponding path program 1 times [2022-11-02 20:09:42,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:09:42,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1406737841] [2022-11-02 20:09:42,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:09:42,258 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:09:42,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:09:42,259 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:09:42,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-02 20:09:42,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:09:42,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:09:42,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:09:42,595 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:09:42,595 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:09:42,595 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:09:42,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1406737841] [2022-11-02 20:09:42,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1406737841] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:09:42,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:09:42,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:09:42,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331730770] [2022-11-02 20:09:42,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:09:42,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:09:42,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:09:42,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:09:42,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:09:42,598 INFO L87 Difference]: Start difference. First operand 157 states and 205 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 20:09:42,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:09:42,637 INFO L93 Difference]: Finished difference Result 355 states and 496 transitions. [2022-11-02 20:09:42,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:09:42,638 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-11-02 20:09:42,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:09:42,639 INFO L225 Difference]: With dead ends: 355 [2022-11-02 20:09:42,640 INFO L226 Difference]: Without dead ends: 266 [2022-11-02 20:09:42,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:09:42,641 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 192 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:09:42,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 478 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:09:42,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-11-02 20:09:42,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 159. [2022-11-02 20:09:42,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 158 states have (on average 1.3101265822784811) internal successors, (207), 158 states have internal predecessors, (207), 0 states have call successors, (0), 0 states 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 20:09:42,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 207 transitions. [2022-11-02 20:09:42,646 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 207 transitions. Word has length 92 [2022-11-02 20:09:42,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:09:42,647 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 207 transitions. [2022-11-02 20:09:42,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 20:09:42,647 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 207 transitions. [2022-11-02 20:09:42,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-02 20:09:42,648 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:09:42,648 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:09:42,666 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-11-02 20:09:42,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:09:42,861 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:09:42,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:09:42,861 INFO L85 PathProgramCache]: Analyzing trace with hash -2009922219, now seen corresponding path program 1 times [2022-11-02 20:09:42,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:09:42,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1267777138] [2022-11-02 20:09:42,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:09:42,862 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:09:42,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:09:42,864 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:09:42,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-11-02 20:09:43,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:09:43,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:09:43,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:09:43,226 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:09:43,226 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:09:43,227 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:09:43,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1267777138] [2022-11-02 20:09:43,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1267777138] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:09:43,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:09:43,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:09:43,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175388381] [2022-11-02 20:09:43,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:09:43,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:09:43,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:09:43,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:09:43,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:09:43,229 INFO L87 Difference]: Start difference. First operand 159 states and 207 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 20:09:43,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:09:43,270 INFO L93 Difference]: Finished difference Result 355 states and 495 transitions. [2022-11-02 20:09:43,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:09:43,270 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-11-02 20:09:43,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:09:43,272 INFO L225 Difference]: With dead ends: 355 [2022-11-02 20:09:43,272 INFO L226 Difference]: Without dead ends: 266 [2022-11-02 20:09:43,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:09:43,273 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 181 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:09:43,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 483 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:09:43,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-11-02 20:09:43,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 163. [2022-11-02 20:09:43,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 1.308641975308642) internal successors, (212), 162 states have internal predecessors, (212), 0 states have call successors, (0), 0 states 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 20:09:43,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 212 transitions. [2022-11-02 20:09:43,278 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 212 transitions. Word has length 92 [2022-11-02 20:09:43,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:09:43,279 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 212 transitions. [2022-11-02 20:09:43,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 20:09:43,279 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 212 transitions. [2022-11-02 20:09:43,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-02 20:09:43,280 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:09:43,280 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:09:43,301 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2022-11-02 20:09:43,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:09:43,493 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:09:43,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:09:43,493 INFO L85 PathProgramCache]: Analyzing trace with hash 596101335, now seen corresponding path program 1 times [2022-11-02 20:09:43,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:09:43,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [823108880] [2022-11-02 20:09:43,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:09:43,494 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:09:43,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:09:43,495 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:09:43,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-11-02 20:09:43,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:09:43,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:09:43,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:09:43,842 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:09:43,842 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:09:43,843 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:09:43,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [823108880] [2022-11-02 20:09:43,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [823108880] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:09:43,843 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:09:43,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:09:43,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308651247] [2022-11-02 20:09:43,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:09:43,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:09:43,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:09:43,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:09:43,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:09:43,845 INFO L87 Difference]: Start difference. First operand 163 states and 212 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 20:09:43,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:09:43,892 INFO L93 Difference]: Finished difference Result 355 states and 494 transitions. [2022-11-02 20:09:43,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:09:43,892 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-11-02 20:09:43,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:09:43,894 INFO L225 Difference]: With dead ends: 355 [2022-11-02 20:09:43,894 INFO L226 Difference]: Without dead ends: 266 [2022-11-02 20:09:43,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:09:43,896 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 170 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:09:43,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 476 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:09:43,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-11-02 20:09:43,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 167. [2022-11-02 20:09:43,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 166 states have (on average 1.3072289156626506) internal successors, (217), 166 states have internal predecessors, (217), 0 states have call successors, (0), 0 states 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 20:09:43,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 217 transitions. [2022-11-02 20:09:43,902 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 217 transitions. Word has length 92 [2022-11-02 20:09:43,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:09:43,903 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 217 transitions. [2022-11-02 20:09:43,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 20:09:43,903 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 217 transitions. [2022-11-02 20:09:43,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-02 20:09:43,903 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:09:43,904 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:09:43,917 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-11-02 20:09:44,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:09:44,117 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:09:44,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:09:44,118 INFO L85 PathProgramCache]: Analyzing trace with hash -683762343, now seen corresponding path program 1 times [2022-11-02 20:09:44,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:09:44,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [804033456] [2022-11-02 20:09:44,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:09:44,118 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:09:44,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:09:44,120 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:09:44,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-11-02 20:09:44,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:09:44,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:09:44,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:09:44,460 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:09:44,460 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:09:44,460 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:09:44,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [804033456] [2022-11-02 20:09:44,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [804033456] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:09:44,461 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:09:44,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:09:44,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696427564] [2022-11-02 20:09:44,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:09:44,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:09:44,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:09:44,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:09:44,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:09:44,462 INFO L87 Difference]: Start difference. First operand 167 states and 217 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 20:09:44,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:09:44,496 INFO L93 Difference]: Finished difference Result 355 states and 493 transitions. [2022-11-02 20:09:44,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:09:44,496 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-11-02 20:09:44,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:09:44,498 INFO L225 Difference]: With dead ends: 355 [2022-11-02 20:09:44,498 INFO L226 Difference]: Without dead ends: 266 [2022-11-02 20:09:44,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:09:44,499 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 164 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:09:44,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 475 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:09:44,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-11-02 20:09:44,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 169. [2022-11-02 20:09:44,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 168 states have (on average 1.3035714285714286) internal successors, (219), 168 states have internal predecessors, (219), 0 states have call successors, (0), 0 states 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 20:09:44,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 219 transitions. [2022-11-02 20:09:44,505 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 219 transitions. Word has length 92 [2022-11-02 20:09:44,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:09:44,505 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 219 transitions. [2022-11-02 20:09:44,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 20:09:44,506 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 219 transitions. [2022-11-02 20:09:44,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-02 20:09:44,506 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:09:44,506 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:09:44,524 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2022-11-02 20:09:44,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:09:44,720 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:09:44,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:09:44,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1270568357, now seen corresponding path program 1 times [2022-11-02 20:09:44,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:09:44,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1424824229] [2022-11-02 20:09:44,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:09:44,721 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:09:44,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:09:44,722 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:09:44,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-11-02 20:09:44,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:09:44,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:09:44,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:09:45,044 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:09:45,044 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:09:45,044 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:09:45,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1424824229] [2022-11-02 20:09:45,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1424824229] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:09:45,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:09:45,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:09:45,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511830951] [2022-11-02 20:09:45,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:09:45,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:09:45,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:09:45,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:09:45,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:09:45,046 INFO L87 Difference]: Start difference. First operand 169 states and 219 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 20:09:45,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:09:45,077 INFO L93 Difference]: Finished difference Result 355 states and 492 transitions. [2022-11-02 20:09:45,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:09:45,078 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-11-02 20:09:45,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:09:45,079 INFO L225 Difference]: With dead ends: 355 [2022-11-02 20:09:45,079 INFO L226 Difference]: Without dead ends: 266 [2022-11-02 20:09:45,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:09:45,080 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 158 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:09:45,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 480 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:09:45,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-11-02 20:09:45,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 171. [2022-11-02 20:09:45,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 170 states have (on average 1.3) internal successors, (221), 170 states have internal predecessors, (221), 0 states have call successors, (0), 0 states 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 20:09:45,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 221 transitions. [2022-11-02 20:09:45,086 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 221 transitions. Word has length 92 [2022-11-02 20:09:45,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:09:45,086 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 221 transitions. [2022-11-02 20:09:45,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 20:09:45,087 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 221 transitions. [2022-11-02 20:09:45,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-02 20:09:45,087 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:09:45,088 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:09:45,105 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2022-11-02 20:09:45,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:09:45,301 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:09:45,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:09:45,301 INFO L85 PathProgramCache]: Analyzing trace with hash -569503779, now seen corresponding path program 1 times [2022-11-02 20:09:45,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:09:45,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [80061209] [2022-11-02 20:09:45,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:09:45,302 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:09:45,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:09:45,303 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:09:45,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-11-02 20:09:45,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:09:45,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:09:45,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:09:45,711 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:09:45,711 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:09:45,711 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:09:45,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [80061209] [2022-11-02 20:09:45,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [80061209] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:09:45,712 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:09:45,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:09:45,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003738535] [2022-11-02 20:09:45,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:09:45,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:09:45,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:09:45,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:09:45,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:09:45,717 INFO L87 Difference]: Start difference. First operand 171 states and 221 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 20:09:45,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:09:45,793 INFO L93 Difference]: Finished difference Result 380 states and 526 transitions. [2022-11-02 20:09:45,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:09:45,794 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-11-02 20:09:45,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:09:45,795 INFO L225 Difference]: With dead ends: 380 [2022-11-02 20:09:45,796 INFO L226 Difference]: Without dead ends: 291 [2022-11-02 20:09:45,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:09:45,797 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 293 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 638 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:09:45,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [293 Valid, 638 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:09:45,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2022-11-02 20:09:45,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 173. [2022-11-02 20:09:45,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 172 states have (on average 1.2965116279069768) internal successors, (223), 172 states have internal predecessors, (223), 0 states have call successors, (0), 0 states 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 20:09:45,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 223 transitions. [2022-11-02 20:09:45,804 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 223 transitions. Word has length 92 [2022-11-02 20:09:45,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:09:45,804 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 223 transitions. [2022-11-02 20:09:45,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 20:09:45,805 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 223 transitions. [2022-11-02 20:09:45,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-02 20:09:45,805 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:09:45,806 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:09:45,821 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2022-11-02 20:09:46,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:09:46,019 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:09:46,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:09:46,019 INFO L85 PathProgramCache]: Analyzing trace with hash 110554591, now seen corresponding path program 1 times [2022-11-02 20:09:46,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:09:46,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1812557718] [2022-11-02 20:09:46,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:09:46,020 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:09:46,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:09:46,021 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:09:46,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-11-02 20:09:46,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:09:46,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:09:46,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:09:46,335 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:09:46,336 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:09:46,336 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:09:46,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1812557718] [2022-11-02 20:09:46,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1812557718] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:09:46,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:09:46,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:09:46,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318008535] [2022-11-02 20:09:46,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:09:46,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:09:46,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:09:46,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:09:46,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:09:46,338 INFO L87 Difference]: Start difference. First operand 173 states and 223 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 20:09:46,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:09:46,397 INFO L93 Difference]: Finished difference Result 355 states and 490 transitions. [2022-11-02 20:09:46,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:09:46,403 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-11-02 20:09:46,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:09:46,404 INFO L225 Difference]: With dead ends: 355 [2022-11-02 20:09:46,404 INFO L226 Difference]: Without dead ends: 266 [2022-11-02 20:09:46,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:09:46,405 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 141 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:09:46,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 460 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:09:46,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-11-02 20:09:46,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 177. [2022-11-02 20:09:46,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 176 states have (on average 1.2954545454545454) internal successors, (228), 176 states have internal predecessors, (228), 0 states have call successors, (0), 0 states 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 20:09:46,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 228 transitions. [2022-11-02 20:09:46,411 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 228 transitions. Word has length 92 [2022-11-02 20:09:46,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:09:46,412 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 228 transitions. [2022-11-02 20:09:46,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 20:09:46,412 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 228 transitions. [2022-11-02 20:09:46,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-02 20:09:46,413 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:09:46,413 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:09:46,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2022-11-02 20:09:46,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:09:46,626 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:09:46,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:09:46,626 INFO L85 PathProgramCache]: Analyzing trace with hash 112401633, now seen corresponding path program 1 times [2022-11-02 20:09:46,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:09:46,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [822152163] [2022-11-02 20:09:46,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:09:46,627 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:09:46,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:09:46,628 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:09:46,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2022-11-02 20:09:46,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:09:46,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-02 20:09:46,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:09:47,458 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:09:47,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:09:48,948 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:09:48,949 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:09:48,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [822152163] [2022-11-02 20:09:48,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [822152163] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:09:48,949 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:09:48,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-11-02 20:09:48,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034618379] [2022-11-02 20:09:48,950 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:09:48,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 20:09:48,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:09:48,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 20:09:48,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:09:48,952 INFO L87 Difference]: Start difference. First operand 177 states and 228 transitions. Second operand has 14 states, 14 states have (on average 13.0) internal successors, (182), 14 states have internal predecessors, (182), 0 states have call successors, (0), 0 states 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 20:09:49,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:09:49,409 INFO L93 Difference]: Finished difference Result 374 states and 519 transitions. [2022-11-02 20:09:49,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 20:09:49,410 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 13.0) internal successors, (182), 14 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-11-02 20:09:49,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:09:49,412 INFO L225 Difference]: With dead ends: 374 [2022-11-02 20:09:49,412 INFO L226 Difference]: Without dead ends: 372 [2022-11-02 20:09:49,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2022-11-02 20:09:49,413 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 753 mSDsluCounter, 1341 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 753 SdHoareTripleChecker+Valid, 1591 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 143 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:09:49,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [753 Valid, 1591 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 169 Invalid, 0 Unknown, 143 Unchecked, 0.2s Time] [2022-11-02 20:09:49,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2022-11-02 20:09:49,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 232. [2022-11-02 20:09:49,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 231 states have (on average 1.3376623376623376) internal successors, (309), 231 states have internal predecessors, (309), 0 states have call successors, (0), 0 states 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 20:09:49,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 309 transitions. [2022-11-02 20:09:49,422 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 309 transitions. Word has length 92 [2022-11-02 20:09:49,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:09:49,422 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 309 transitions. [2022-11-02 20:09:49,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 13.0) internal successors, (182), 14 states have internal predecessors, (182), 0 states have call successors, (0), 0 states 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 20:09:49,422 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 309 transitions. [2022-11-02 20:09:49,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-02 20:09:49,423 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:09:49,424 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:09:49,437 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (36)] Ended with exit code 0 [2022-11-02 20:09:49,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:09:49,637 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:09:49,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:09:49,638 INFO L85 PathProgramCache]: Analyzing trace with hash -663066033, now seen corresponding path program 1 times [2022-11-02 20:09:49,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:09:49,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2052354194] [2022-11-02 20:09:49,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:09:49,639 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:09:49,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:09:49,639 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:09:49,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2022-11-02 20:09:49,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:09:49,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 827 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:09:49,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:09:50,240 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 87 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:09:50,240 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:09:50,452 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 87 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:09:50,452 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:09:50,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2052354194] [2022-11-02 20:09:50,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2052354194] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:09:50,453 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:09:50,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-11-02 20:09:50,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488781104] [2022-11-02 20:09:50,466 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:09:50,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:09:50,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:09:50,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:09:50,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:09:50,468 INFO L87 Difference]: Start difference. First operand 232 states and 309 transitions. Second operand has 11 states, 11 states have (on average 19.545454545454547) internal successors, (215), 11 states have internal predecessors, (215), 0 states have call successors, (0), 0 states 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 20:09:50,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:09:50,998 INFO L93 Difference]: Finished difference Result 658 states and 938 transitions. [2022-11-02 20:09:50,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 20:09:50,999 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 19.545454545454547) internal successors, (215), 11 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 179 [2022-11-02 20:09:50,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:09:51,000 INFO L225 Difference]: With dead ends: 658 [2022-11-02 20:09:51,000 INFO L226 Difference]: Without dead ends: 514 [2022-11-02 20:09:51,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=168, Invalid=384, Unknown=0, NotChecked=0, Total=552 [2022-11-02 20:09:51,002 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 1732 mSDsluCounter, 1029 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1732 SdHoareTripleChecker+Valid, 1185 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:09:51,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1732 Valid, 1185 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:09:51,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2022-11-02 20:09:51,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 234. [2022-11-02 20:09:51,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 233 states have (on average 1.3347639484978542) internal successors, (311), 233 states have internal predecessors, (311), 0 states have call successors, (0), 0 states 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 20:09:51,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 311 transitions. [2022-11-02 20:09:51,010 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 311 transitions. Word has length 179 [2022-11-02 20:09:51,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:09:51,011 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 311 transitions. [2022-11-02 20:09:51,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 19.545454545454547) internal successors, (215), 11 states have internal predecessors, (215), 0 states have call successors, (0), 0 states 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 20:09:51,011 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 311 transitions. [2022-11-02 20:09:51,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-02 20:09:51,012 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:09:51,012 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:09:51,032 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2022-11-02 20:09:51,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:09:51,228 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:09:51,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:09:51,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1249342255, now seen corresponding path program 1 times [2022-11-02 20:09:51,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:09:51,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1774565595] [2022-11-02 20:09:51,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:09:51,229 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:09:51,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:09:51,231 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:09:51,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2022-11-02 20:09:51,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:09:51,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 827 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-02 20:09:51,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:09:52,040 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 85 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 20:09:52,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:09:52,478 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 85 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 20:09:52,478 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:09:52,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1774565595] [2022-11-02 20:09:52,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1774565595] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:09:52,479 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:09:52,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2022-11-02 20:09:52,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910137682] [2022-11-02 20:09:52,480 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:09:52,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-02 20:09:52,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:09:52,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-02 20:09:52,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2022-11-02 20:09:52,484 INFO L87 Difference]: Start difference. First operand 234 states and 311 transitions. Second operand has 20 states, 20 states have (on average 13.25) internal successors, (265), 20 states have internal predecessors, (265), 0 states have call successors, (0), 0 states 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 20:09:53,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:09:53,631 INFO L93 Difference]: Finished difference Result 1105 states and 1586 transitions. [2022-11-02 20:09:53,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-02 20:09:53,631 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 13.25) internal successors, (265), 20 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 179 [2022-11-02 20:09:53,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:09:53,636 INFO L225 Difference]: With dead ends: 1105 [2022-11-02 20:09:53,636 INFO L226 Difference]: Without dead ends: 959 [2022-11-02 20:09:53,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 337 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=394, Invalid=1246, Unknown=0, NotChecked=0, Total=1640 [2022-11-02 20:09:53,638 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 2488 mSDsluCounter, 4205 mSDsCounter, 0 mSdLazyCounter, 635 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2488 SdHoareTripleChecker+Valid, 4491 SdHoareTripleChecker+Invalid, 698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:09:53,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2488 Valid, 4491 Invalid, 698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 635 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 20:09:53,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2022-11-02 20:09:53,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 378. [2022-11-02 20:09:53,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 377 states have (on average 1.3872679045092837) internal successors, (523), 377 states have internal predecessors, (523), 0 states have call successors, (0), 0 states 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 20:09:53,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 523 transitions. [2022-11-02 20:09:53,655 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 523 transitions. Word has length 179 [2022-11-02 20:09:53,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:09:53,656 INFO L495 AbstractCegarLoop]: Abstraction has 378 states and 523 transitions. [2022-11-02 20:09:53,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 13.25) internal successors, (265), 20 states have internal predecessors, (265), 0 states have call successors, (0), 0 states 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 20:09:53,656 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 523 transitions. [2022-11-02 20:09:53,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-02 20:09:53,657 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:09:53,658 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:09:53,673 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2022-11-02 20:09:53,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:09:53,873 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:09:53,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:09:53,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1169142223, now seen corresponding path program 1 times [2022-11-02 20:09:53,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:09:53,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1841746829] [2022-11-02 20:09:53,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:09:53,875 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:09:53,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:09:53,876 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:09:53,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2022-11-02 20:09:54,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:09:54,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 827 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 20:09:54,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:09:54,552 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 83 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:09:54,552 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:09:54,886 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 90 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:09:54,886 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:09:54,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1841746829] [2022-11-02 20:09:54,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1841746829] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:09:54,887 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:09:54,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2022-11-02 20:09:54,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902544820] [2022-11-02 20:09:54,887 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:09:54,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 20:09:54,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:09:54,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 20:09:54,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:09:54,889 INFO L87 Difference]: Start difference. First operand 378 states and 523 transitions. Second operand has 19 states, 19 states have (on average 12.368421052631579) internal successors, (235), 19 states have internal predecessors, (235), 0 states have call successors, (0), 0 states 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 20:09:56,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:09:56,022 INFO L93 Difference]: Finished difference Result 2464 states and 3585 transitions. [2022-11-02 20:09:56,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-02 20:09:56,022 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 12.368421052631579) internal successors, (235), 19 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 179 [2022-11-02 20:09:56,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:09:56,030 INFO L225 Difference]: With dead ends: 2464 [2022-11-02 20:09:56,031 INFO L226 Difference]: Without dead ends: 2174 [2022-11-02 20:09:56,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=408, Invalid=1314, Unknown=0, NotChecked=0, Total=1722 [2022-11-02 20:09:56,033 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 1891 mSDsluCounter, 3336 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1891 SdHoareTripleChecker+Valid, 3550 SdHoareTripleChecker+Invalid, 679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:09:56,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1891 Valid, 3550 Invalid, 679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 626 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 20:09:56,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2174 states. [2022-11-02 20:09:56,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2174 to 666. [2022-11-02 20:09:56,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 665 states have (on average 1.4225563909774437) internal successors, (946), 665 states have internal predecessors, (946), 0 states have call successors, (0), 0 states 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 20:09:56,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 946 transitions. [2022-11-02 20:09:56,077 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 946 transitions. Word has length 179 [2022-11-02 20:09:56,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:09:56,078 INFO L495 AbstractCegarLoop]: Abstraction has 666 states and 946 transitions. [2022-11-02 20:09:56,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 12.368421052631579) internal successors, (235), 19 states have internal predecessors, (235), 0 states have call successors, (0), 0 states 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 20:09:56,078 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 946 transitions. [2022-11-02 20:09:56,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-02 20:09:56,080 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:09:56,080 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:09:56,095 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (39)] Ended with exit code 0 [2022-11-02 20:09:56,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:09:56,295 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:09:56,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:09:56,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1800968879, now seen corresponding path program 1 times [2022-11-02 20:09:56,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:09:56,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1470444258] [2022-11-02 20:09:56,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:09:56,297 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:09:56,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:09:56,298 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:09:56,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2022-11-02 20:09:56,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:09:56,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 827 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 20:09:56,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:09:56,962 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 81 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:09:56,962 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:09:57,258 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 90 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:09:57,258 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:09:57,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1470444258] [2022-11-02 20:09:57,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1470444258] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:09:57,259 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:09:57,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2022-11-02 20:09:57,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084312447] [2022-11-02 20:09:57,259 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:09:57,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 20:09:57,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:09:57,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 20:09:57,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:09:57,261 INFO L87 Difference]: Start difference. First operand 666 states and 946 transitions. Second operand has 19 states, 19 states have (on average 12.368421052631579) internal successors, (235), 19 states have internal predecessors, (235), 0 states have call successors, (0), 0 states 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 20:09:58,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:09:58,338 INFO L93 Difference]: Finished difference Result 2135 states and 3097 transitions. [2022-11-02 20:09:58,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-02 20:09:58,339 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 12.368421052631579) internal successors, (235), 19 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 179 [2022-11-02 20:09:58,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:09:58,345 INFO L225 Difference]: With dead ends: 2135 [2022-11-02 20:09:58,345 INFO L226 Difference]: Without dead ends: 1845 [2022-11-02 20:09:58,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=408, Invalid=1314, Unknown=0, NotChecked=0, Total=1722 [2022-11-02 20:09:58,347 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 1762 mSDsluCounter, 3699 mSDsCounter, 0 mSdLazyCounter, 683 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1762 SdHoareTripleChecker+Valid, 3915 SdHoareTripleChecker+Invalid, 734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:09:58,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1762 Valid, 3915 Invalid, 734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 683 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 20:09:58,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1845 states. [2022-11-02 20:09:58,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1845 to 666. [2022-11-02 20:09:58,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 665 states have (on average 1.4195488721804512) internal successors, (944), 665 states have internal predecessors, (944), 0 states have call successors, (0), 0 states 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 20:09:58,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 944 transitions. [2022-11-02 20:09:58,385 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 944 transitions. Word has length 179 [2022-11-02 20:09:58,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:09:58,386 INFO L495 AbstractCegarLoop]: Abstraction has 666 states and 944 transitions. [2022-11-02 20:09:58,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 12.368421052631579) internal successors, (235), 19 states have internal predecessors, (235), 0 states have call successors, (0), 0 states 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 20:09:58,386 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 944 transitions. [2022-11-02 20:09:58,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-02 20:09:58,387 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:09:58,387 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:09:58,412 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2022-11-02 20:09:58,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:09:58,601 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:09:58,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:09:58,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1436160339, now seen corresponding path program 1 times [2022-11-02 20:09:58,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:09:58,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1959828633] [2022-11-02 20:09:58,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:09:58,602 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:09:58,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:09:58,603 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:09:58,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2022-11-02 20:09:58,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:09:58,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 827 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:09:58,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:09:59,233 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 77 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:09:59,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:09:59,472 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 90 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:09:59,472 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:09:59,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1959828633] [2022-11-02 20:09:59,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1959828633] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:09:59,473 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:09:59,473 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-11-02 20:09:59,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96583116] [2022-11-02 20:09:59,474 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:09:59,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:09:59,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:09:59,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:09:59,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:09:59,475 INFO L87 Difference]: Start difference. First operand 666 states and 944 transitions. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states 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 20:09:59,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:09:59,836 INFO L93 Difference]: Finished difference Result 3310 states and 4820 transitions. [2022-11-02 20:09:59,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:09:59,836 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 179 [2022-11-02 20:09:59,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:09:59,845 INFO L225 Difference]: With dead ends: 3310 [2022-11-02 20:09:59,845 INFO L226 Difference]: Without dead ends: 2732 [2022-11-02 20:09:59,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:09:59,847 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 1176 mSDsluCounter, 1342 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1176 SdHoareTripleChecker+Valid, 1528 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:09:59,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1176 Valid, 1528 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:09:59,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2732 states. [2022-11-02 20:09:59,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2732 to 1242. [2022-11-02 20:09:59,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1242 states, 1241 states have (on average 1.4391619661563255) internal successors, (1786), 1241 states have internal predecessors, (1786), 0 states have call successors, (0), 0 states 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 20:09:59,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1242 states to 1242 states and 1786 transitions. [2022-11-02 20:09:59,925 INFO L78 Accepts]: Start accepts. Automaton has 1242 states and 1786 transitions. Word has length 179 [2022-11-02 20:09:59,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:09:59,926 INFO L495 AbstractCegarLoop]: Abstraction has 1242 states and 1786 transitions. [2022-11-02 20:09:59,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states 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 20:09:59,926 INFO L276 IsEmpty]: Start isEmpty. Operand 1242 states and 1786 transitions. [2022-11-02 20:09:59,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-02 20:09:59,927 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:09:59,928 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:09:59,944 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (41)] Ended with exit code 0 [2022-11-02 20:10:00,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:10:00,144 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:10:00,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:10:00,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1463225941, now seen corresponding path program 1 times [2022-11-02 20:10:00,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:10:00,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [372191964] [2022-11-02 20:10:00,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:10:00,146 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:10:00,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:10:00,147 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:10:00,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2022-11-02 20:10:00,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:00,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 827 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 20:10:00,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:10:00,781 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 73 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:10:00,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:10:01,109 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 90 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:10:01,109 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:10:01,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [372191964] [2022-11-02 20:10:01,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [372191964] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:10:01,109 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:10:01,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2022-11-02 20:10:01,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845596067] [2022-11-02 20:10:01,110 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:10:01,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 20:10:01,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:10:01,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 20:10:01,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:10:01,112 INFO L87 Difference]: Start difference. First operand 1242 states and 1786 transitions. Second operand has 19 states, 19 states have (on average 12.368421052631579) internal successors, (235), 19 states have internal predecessors, (235), 0 states have call successors, (0), 0 states 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 20:10:02,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:10:02,265 INFO L93 Difference]: Finished difference Result 5282 states and 7704 transitions. [2022-11-02 20:10:02,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-02 20:10:02,266 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 12.368421052631579) internal successors, (235), 19 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 179 [2022-11-02 20:10:02,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:10:02,273 INFO L225 Difference]: With dead ends: 5282 [2022-11-02 20:10:02,273 INFO L226 Difference]: Without dead ends: 4128 [2022-11-02 20:10:02,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=408, Invalid=1314, Unknown=0, NotChecked=0, Total=1722 [2022-11-02 20:10:02,275 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 1626 mSDsluCounter, 3796 mSDsCounter, 0 mSdLazyCounter, 717 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1626 SdHoareTripleChecker+Valid, 4017 SdHoareTripleChecker+Invalid, 764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:10:02,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1626 Valid, 4017 Invalid, 764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 717 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-02 20:10:02,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4128 states. [2022-11-02 20:10:02,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4128 to 1242. [2022-11-02 20:10:02,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1242 states, 1241 states have (on average 1.43593875906527) internal successors, (1782), 1241 states have internal predecessors, (1782), 0 states have call successors, (0), 0 states 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 20:10:02,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1242 states to 1242 states and 1782 transitions. [2022-11-02 20:10:02,331 INFO L78 Accepts]: Start accepts. Automaton has 1242 states and 1782 transitions. Word has length 179 [2022-11-02 20:10:02,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:10:02,331 INFO L495 AbstractCegarLoop]: Abstraction has 1242 states and 1782 transitions. [2022-11-02 20:10:02,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 12.368421052631579) internal successors, (235), 19 states have internal predecessors, (235), 0 states have call successors, (0), 0 states 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 20:10:02,332 INFO L276 IsEmpty]: Start isEmpty. Operand 1242 states and 1782 transitions. [2022-11-02 20:10:02,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-02 20:10:02,333 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:10:02,333 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:10:02,353 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2022-11-02 20:10:02,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:10:02,549 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:10:02,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:10:02,549 INFO L85 PathProgramCache]: Analyzing trace with hash -447816617, now seen corresponding path program 1 times [2022-11-02 20:10:02,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:10:02,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2044800958] [2022-11-02 20:10:02,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:10:02,550 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:10:02,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:10:02,551 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:10:02,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2022-11-02 20:10:02,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:02,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 827 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:10:02,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:10:03,125 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 69 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:10:03,126 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:10:03,345 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 90 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:10:03,346 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:10:03,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2044800958] [2022-11-02 20:10:03,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2044800958] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:10:03,346 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:10:03,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-11-02 20:10:03,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657081106] [2022-11-02 20:10:03,347 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:10:03,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:10:03,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:10:03,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:10:03,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:10:03,348 INFO L87 Difference]: Start difference. First operand 1242 states and 1782 transitions. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states 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 20:10:03,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:10:03,712 INFO L93 Difference]: Finished difference Result 3854 states and 5598 transitions. [2022-11-02 20:10:03,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:10:03,712 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 179 [2022-11-02 20:10:03,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:10:03,717 INFO L225 Difference]: With dead ends: 3854 [2022-11-02 20:10:03,717 INFO L226 Difference]: Without dead ends: 2700 [2022-11-02 20:10:03,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:10:03,718 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 1159 mSDsluCounter, 1113 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1159 SdHoareTripleChecker+Valid, 1300 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:10:03,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1159 Valid, 1300 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:10:03,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2700 states. [2022-11-02 20:10:03,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2700 to 1242. [2022-11-02 20:10:03,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1242 states, 1241 states have (on average 1.4327155519742143) internal successors, (1778), 1241 states have internal predecessors, (1778), 0 states have call successors, (0), 0 states 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 20:10:03,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1242 states to 1242 states and 1778 transitions. [2022-11-02 20:10:03,775 INFO L78 Accepts]: Start accepts. Automaton has 1242 states and 1778 transitions. Word has length 179 [2022-11-02 20:10:03,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:10:03,776 INFO L495 AbstractCegarLoop]: Abstraction has 1242 states and 1778 transitions. [2022-11-02 20:10:03,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states 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 20:10:03,776 INFO L276 IsEmpty]: Start isEmpty. Operand 1242 states and 1778 transitions. [2022-11-02 20:10:03,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-02 20:10:03,778 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:10:03,778 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:10:03,794 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2022-11-02 20:10:03,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:10:03,993 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:10:03,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:10:03,993 INFO L85 PathProgramCache]: Analyzing trace with hash -940442791, now seen corresponding path program 1 times [2022-11-02 20:10:03,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:10:03,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1300126833] [2022-11-02 20:10:03,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:10:03,995 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:10:03,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:10:03,995 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:10:03,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2022-11-02 20:10:04,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:04,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 827 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-02 20:10:04,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:10:04,837 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 67 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:10:04,837 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:10:05,121 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 67 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:10:05,122 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:10:05,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1300126833] [2022-11-02 20:10:05,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1300126833] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:10:05,122 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:10:05,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2022-11-02 20:10:05,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005692585] [2022-11-02 20:10:05,123 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:10:05,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-02 20:10:05,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:10:05,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-02 20:10:05,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:10:05,124 INFO L87 Difference]: Start difference. First operand 1242 states and 1778 transitions. Second operand has 13 states, 13 states have (on average 22.307692307692307) internal successors, (290), 13 states have internal predecessors, (290), 0 states have call successors, (0), 0 states 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 20:10:05,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:10:05,674 INFO L93 Difference]: Finished difference Result 6410 states and 9310 transitions. [2022-11-02 20:10:05,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:10:05,675 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 22.307692307692307) internal successors, (290), 13 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 179 [2022-11-02 20:10:05,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:10:05,688 INFO L225 Difference]: With dead ends: 6410 [2022-11-02 20:10:05,689 INFO L226 Difference]: Without dead ends: 5256 [2022-11-02 20:10:05,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 345 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:10:05,691 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 1114 mSDsluCounter, 1615 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1114 SdHoareTripleChecker+Valid, 1792 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:10:05,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1114 Valid, 1792 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:10:05,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5256 states. [2022-11-02 20:10:05,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5256 to 2394. [2022-11-02 20:10:05,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2394 states, 2393 states have (on average 1.4417049728374425) internal successors, (3450), 2393 states have internal predecessors, (3450), 0 states have call successors, (0), 0 states 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 20:10:05,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2394 states to 2394 states and 3450 transitions. [2022-11-02 20:10:05,786 INFO L78 Accepts]: Start accepts. Automaton has 2394 states and 3450 transitions. Word has length 179 [2022-11-02 20:10:05,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:10:05,788 INFO L495 AbstractCegarLoop]: Abstraction has 2394 states and 3450 transitions. [2022-11-02 20:10:05,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 22.307692307692307) internal successors, (290), 13 states have internal predecessors, (290), 0 states have call successors, (0), 0 states 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 20:10:05,789 INFO L276 IsEmpty]: Start isEmpty. Operand 2394 states and 3450 transitions. [2022-11-02 20:10:05,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-02 20:10:05,790 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:10:05,790 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:10:05,806 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (44)] Ended with exit code 0 [2022-11-02 20:10:06,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:10:06,006 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:10:06,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:10:06,006 INFO L85 PathProgramCache]: Analyzing trace with hash 2138370779, now seen corresponding path program 1 times [2022-11-02 20:10:06,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:10:06,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1944588651] [2022-11-02 20:10:06,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:10:06,007 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:10:06,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:10:06,008 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:10:06,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2022-11-02 20:10:06,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:06,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 827 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 20:10:06,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:10:07,012 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 65 proven. 3 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-02 20:10:07,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:10:07,362 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 65 proven. 3 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-02 20:10:07,362 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:10:07,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1944588651] [2022-11-02 20:10:07,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1944588651] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:10:07,363 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:10:07,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2022-11-02 20:10:07,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599493597] [2022-11-02 20:10:07,363 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:10:07,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:10:07,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:10:07,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:10:07,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:10:07,364 INFO L87 Difference]: Start difference. First operand 2394 states and 3450 transitions. Second operand has 10 states, 10 states have (on average 24.6) internal successors, (246), 10 states have internal predecessors, (246), 0 states have call successors, (0), 0 states 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 20:10:07,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:10:07,689 INFO L93 Difference]: Finished difference Result 13330 states and 19390 transitions. [2022-11-02 20:10:07,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:10:07,689 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 24.6) internal successors, (246), 10 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 179 [2022-11-02 20:10:07,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:10:07,705 INFO L225 Difference]: With dead ends: 13330 [2022-11-02 20:10:07,705 INFO L226 Difference]: Without dead ends: 11024 [2022-11-02 20:10:07,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 347 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:10:07,710 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 856 mSDsluCounter, 1177 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 856 SdHoareTripleChecker+Valid, 1396 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:10:07,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [856 Valid, 1396 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:10:07,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11024 states. [2022-11-02 20:10:07,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11024 to 4698. [2022-11-02 20:10:07,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4698 states, 4697 states have (on average 1.4447519693421333) internal successors, (6786), 4697 states have internal predecessors, (6786), 0 states have call successors, (0), 0 states 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 20:10:07,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4698 states to 4698 states and 6786 transitions. [2022-11-02 20:10:07,952 INFO L78 Accepts]: Start accepts. Automaton has 4698 states and 6786 transitions. Word has length 179 [2022-11-02 20:10:07,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:10:07,952 INFO L495 AbstractCegarLoop]: Abstraction has 4698 states and 6786 transitions. [2022-11-02 20:10:07,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 24.6) internal successors, (246), 10 states have internal predecessors, (246), 0 states have call successors, (0), 0 states 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 20:10:07,953 INFO L276 IsEmpty]: Start isEmpty. Operand 4698 states and 6786 transitions. [2022-11-02 20:10:07,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-02 20:10:07,954 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:10:07,954 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:10:07,970 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2022-11-02 20:10:08,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:10:08,170 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:10:08,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:10:08,170 INFO L85 PathProgramCache]: Analyzing trace with hash 452190941, now seen corresponding path program 1 times [2022-11-02 20:10:08,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:10:08,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [764352657] [2022-11-02 20:10:08,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:10:08,171 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:10:08,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:10:08,172 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:10:08,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2022-11-02 20:10:08,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:08,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 827 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:10:08,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:10:08,824 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 63 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:10:08,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:10:09,133 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 90 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:10:09,134 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:10:09,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [764352657] [2022-11-02 20:10:09,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [764352657] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:10:09,134 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:10:09,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2022-11-02 20:10:09,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617377346] [2022-11-02 20:10:09,134 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:10:09,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-02 20:10:09,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:10:09,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-02 20:10:09,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:10:09,136 INFO L87 Difference]: Start difference. First operand 4698 states and 6786 transitions. Second operand has 17 states, 17 states have (on average 15.235294117647058) internal successors, (259), 17 states have internal predecessors, (259), 0 states have call successors, (0), 0 states 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 20:10:10,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:10:10,266 INFO L93 Difference]: Finished difference Result 33092 states and 48103 transitions. [2022-11-02 20:10:10,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-02 20:10:10,269 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 15.235294117647058) internal successors, (259), 17 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 179 [2022-11-02 20:10:10,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:10:10,312 INFO L225 Difference]: With dead ends: 33092 [2022-11-02 20:10:10,312 INFO L226 Difference]: Without dead ends: 28482 [2022-11-02 20:10:10,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=285, Invalid=837, Unknown=0, NotChecked=0, Total=1122 [2022-11-02 20:10:10,320 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 1598 mSDsluCounter, 2439 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1598 SdHoareTripleChecker+Valid, 2647 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:10:10,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1598 Valid, 2647 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 20:10:10,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28482 states. [2022-11-02 20:10:10,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28482 to 9306. [2022-11-02 20:10:10,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9306 states, 9305 states have (on average 1.4445996775926921) internal successors, (13442), 9305 states have internal predecessors, (13442), 0 states have call successors, (0), 0 states 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 20:10:10,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9306 states to 9306 states and 13442 transitions. [2022-11-02 20:10:10,938 INFO L78 Accepts]: Start accepts. Automaton has 9306 states and 13442 transitions. Word has length 179 [2022-11-02 20:10:10,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:10:10,938 INFO L495 AbstractCegarLoop]: Abstraction has 9306 states and 13442 transitions. [2022-11-02 20:10:10,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 15.235294117647058) internal successors, (259), 17 states have internal predecessors, (259), 0 states have call successors, (0), 0 states 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 20:10:10,939 INFO L276 IsEmpty]: Start isEmpty. Operand 9306 states and 13442 transitions. [2022-11-02 20:10:10,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-02 20:10:10,941 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:10:10,941 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:10:10,963 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2022-11-02 20:10:11,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:10:11,153 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:10:11,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:10:11,153 INFO L85 PathProgramCache]: Analyzing trace with hash 34794335, now seen corresponding path program 1 times [2022-11-02 20:10:11,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:10:11,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1330146177] [2022-11-02 20:10:11,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:10:11,155 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:10:11,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:10:11,157 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:10:11,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2022-11-02 20:10:11,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:11,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 827 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 20:10:11,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:10:12,222 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 61 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-02 20:10:12,223 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:10:12,609 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 61 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-02 20:10:12,610 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:10:12,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1330146177] [2022-11-02 20:10:12,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1330146177] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:10:12,610 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:10:12,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2022-11-02 20:10:12,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064096492] [2022-11-02 20:10:12,611 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:10:12,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:10:12,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:10:12,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:10:12,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:10:12,612 INFO L87 Difference]: Start difference. First operand 9306 states and 13442 transitions. Second operand has 10 states, 10 states have (on average 24.6) internal successors, (246), 10 states have internal predecessors, (246), 0 states have call successors, (0), 0 states 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 20:10:13,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:10:13,128 INFO L93 Difference]: Finished difference Result 31042 states and 45030 transitions. [2022-11-02 20:10:13,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:10:13,129 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 24.6) internal successors, (246), 10 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 179 [2022-11-02 20:10:13,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:10:13,159 INFO L225 Difference]: With dead ends: 31042 [2022-11-02 20:10:13,159 INFO L226 Difference]: Without dead ends: 21824 [2022-11-02 20:10:13,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 347 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:10:13,169 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 1086 mSDsluCounter, 1203 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1086 SdHoareTripleChecker+Valid, 1423 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:10:13,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1086 Valid, 1423 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:10:13,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21824 states. [2022-11-02 20:10:13,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21824 to 9306. [2022-11-02 20:10:13,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9306 states, 9305 states have (on average 1.4411606663084364) internal successors, (13410), 9305 states have internal predecessors, (13410), 0 states have call successors, (0), 0 states 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 20:10:13,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9306 states to 9306 states and 13410 transitions. [2022-11-02 20:10:13,699 INFO L78 Accepts]: Start accepts. Automaton has 9306 states and 13410 transitions. Word has length 179 [2022-11-02 20:10:13,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:10:13,700 INFO L495 AbstractCegarLoop]: Abstraction has 9306 states and 13410 transitions. [2022-11-02 20:10:13,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 24.6) internal successors, (246), 10 states have internal predecessors, (246), 0 states have call successors, (0), 0 states 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 20:10:13,700 INFO L276 IsEmpty]: Start isEmpty. Operand 9306 states and 13410 transitions. [2022-11-02 20:10:13,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-02 20:10:13,703 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:10:13,703 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:10:13,719 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2022-11-02 20:10:13,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:10:13,917 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:10:13,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:10:13,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1996368993, now seen corresponding path program 1 times [2022-11-02 20:10:13,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:10:13,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [941336416] [2022-11-02 20:10:13,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:10:13,919 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:10:13,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:10:13,920 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:10:13,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2022-11-02 20:10:14,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:14,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 827 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:10:14,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:10:14,661 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 59 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:10:14,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:10:14,960 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 90 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:10:14,961 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:10:14,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [941336416] [2022-11-02 20:10:14,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [941336416] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:10:14,961 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:10:14,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2022-11-02 20:10:14,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848787711] [2022-11-02 20:10:14,962 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:10:14,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-02 20:10:14,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:10:14,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-02 20:10:14,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:10:14,963 INFO L87 Difference]: Start difference. First operand 9306 states and 13410 transitions. Second operand has 17 states, 17 states have (on average 15.235294117647058) internal successors, (259), 17 states have internal predecessors, (259), 0 states have call successors, (0), 0 states 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 20:10:16,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:10:16,207 INFO L93 Difference]: Finished difference Result 37444 states and 54231 transitions. [2022-11-02 20:10:16,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-02 20:10:16,207 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 15.235294117647058) internal successors, (259), 17 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 179 [2022-11-02 20:10:16,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:10:16,244 INFO L225 Difference]: With dead ends: 37444 [2022-11-02 20:10:16,245 INFO L226 Difference]: Without dead ends: 28226 [2022-11-02 20:10:16,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=285, Invalid=837, Unknown=0, NotChecked=0, Total=1122 [2022-11-02 20:10:16,254 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 1887 mSDsluCounter, 2181 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1887 SdHoareTripleChecker+Valid, 2392 SdHoareTripleChecker+Invalid, 535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:10:16,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1887 Valid, 2392 Invalid, 535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 20:10:16,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28226 states. [2022-11-02 20:10:16,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28226 to 9306. [2022-11-02 20:10:16,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9306 states, 9305 states have (on average 1.4377216550241805) internal successors, (13378), 9305 states have internal predecessors, (13378), 0 states have call successors, (0), 0 states 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 20:10:16,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9306 states to 9306 states and 13378 transitions. [2022-11-02 20:10:16,636 INFO L78 Accepts]: Start accepts. Automaton has 9306 states and 13378 transitions. Word has length 179 [2022-11-02 20:10:16,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:10:16,636 INFO L495 AbstractCegarLoop]: Abstraction has 9306 states and 13378 transitions. [2022-11-02 20:10:16,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 15.235294117647058) internal successors, (259), 17 states have internal predecessors, (259), 0 states have call successors, (0), 0 states 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 20:10:16,637 INFO L276 IsEmpty]: Start isEmpty. Operand 9306 states and 13378 transitions. [2022-11-02 20:10:16,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-02 20:10:16,639 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:10:16,639 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:10:16,654 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (48)] Ended with exit code 0 [2022-11-02 20:10:16,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:10:16,854 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:10:16,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:10:16,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1737898525, now seen corresponding path program 1 times [2022-11-02 20:10:16,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:10:16,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1252135287] [2022-11-02 20:10:16,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:10:16,856 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:10:16,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:10:16,857 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:10:16,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2022-11-02 20:10:17,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:17,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 827 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:10:17,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:10:17,532 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 57 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:10:17,533 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:10:17,841 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 90 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:10:17,841 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:10:17,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1252135287] [2022-11-02 20:10:17,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1252135287] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:10:17,842 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:10:17,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2022-11-02 20:10:17,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808453249] [2022-11-02 20:10:17,842 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:10:17,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-02 20:10:17,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:10:17,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-02 20:10:17,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:10:17,843 INFO L87 Difference]: Start difference. First operand 9306 states and 13378 transitions. Second operand has 17 states, 17 states have (on average 15.235294117647058) internal successors, (259), 17 states have internal predecessors, (259), 0 states have call successors, (0), 0 states 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 20:10:18,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:10:18,961 INFO L93 Difference]: Finished difference Result 22980 states and 32911 transitions. [2022-11-02 20:10:18,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-02 20:10:18,962 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 15.235294117647058) internal successors, (259), 17 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 179 [2022-11-02 20:10:18,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:10:18,976 INFO L225 Difference]: With dead ends: 22980 [2022-11-02 20:10:18,977 INFO L226 Difference]: Without dead ends: 13762 [2022-11-02 20:10:18,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=285, Invalid=837, Unknown=0, NotChecked=0, Total=1122 [2022-11-02 20:10:18,987 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 1551 mSDsluCounter, 2930 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1551 SdHoareTripleChecker+Valid, 3138 SdHoareTripleChecker+Invalid, 701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:10:18,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1551 Valid, 3138 Invalid, 701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 660 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 20:10:19,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13762 states. [2022-11-02 20:10:19,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13762 to 6786. [2022-11-02 20:10:19,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6786 states, 6785 states have (on average 1.4252026529108328) internal successors, (9670), 6785 states have internal predecessors, (9670), 0 states have call successors, (0), 0 states 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 20:10:19,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6786 states to 6786 states and 9670 transitions. [2022-11-02 20:10:19,387 INFO L78 Accepts]: Start accepts. Automaton has 6786 states and 9670 transitions. Word has length 179 [2022-11-02 20:10:19,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:10:19,388 INFO L495 AbstractCegarLoop]: Abstraction has 6786 states and 9670 transitions. [2022-11-02 20:10:19,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 15.235294117647058) internal successors, (259), 17 states have internal predecessors, (259), 0 states have call successors, (0), 0 states 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 20:10:19,389 INFO L276 IsEmpty]: Start isEmpty. Operand 6786 states and 9670 transitions. [2022-11-02 20:10:19,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2022-11-02 20:10:19,409 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:10:19,409 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:10:19,429 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2022-11-02 20:10:19,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:10:19,626 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:10:19,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:10:19,626 INFO L85 PathProgramCache]: Analyzing trace with hash -768413109, now seen corresponding path program 2 times [2022-11-02 20:10:19,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:10:19,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2107690631] [2022-11-02 20:10:19,628 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:10:19,628 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:10:19,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:10:19,630 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:10:19,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2022-11-02 20:10:20,097 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:10:20,097 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:10:20,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 1192 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-02 20:10:20,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:10:20,507 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 178 proven. 42 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-11-02 20:10:20,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:10:20,899 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 178 proven. 42 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-11-02 20:10:20,900 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:10:20,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2107690631] [2022-11-02 20:10:20,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2107690631] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:10:20,900 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:10:20,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2022-11-02 20:10:20,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153609460] [2022-11-02 20:10:20,901 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:10:20,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 20:10:20,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:10:20,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 20:10:20,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:10:20,902 INFO L87 Difference]: Start difference. First operand 6786 states and 9670 transitions. Second operand has 19 states, 19 states have (on average 13.894736842105264) internal successors, (264), 19 states have internal predecessors, (264), 0 states have call successors, (0), 0 states 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 20:10:22,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:10:22,857 INFO L93 Difference]: Finished difference Result 60180 states and 86307 transitions. [2022-11-02 20:10:22,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-02 20:10:22,858 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 13.894736842105264) internal successors, (264), 19 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 266 [2022-11-02 20:10:22,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:10:22,888 INFO L225 Difference]: With dead ends: 60180 [2022-11-02 20:10:22,888 INFO L226 Difference]: Without dead ends: 53482 [2022-11-02 20:10:22,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 562 GetRequests, 513 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=578, Invalid=1972, Unknown=0, NotChecked=0, Total=2550 [2022-11-02 20:10:22,894 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 3588 mSDsluCounter, 1917 mSDsCounter, 0 mSdLazyCounter, 579 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3588 SdHoareTripleChecker+Valid, 2058 SdHoareTripleChecker+Invalid, 676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:10:22,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3588 Valid, 2058 Invalid, 676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 579 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 20:10:22,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53482 states. [2022-11-02 20:10:23,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53482 to 14234. [2022-11-02 20:10:23,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14234 states, 14233 states have (on average 1.4174805030562776) internal successors, (20175), 14233 states have internal predecessors, (20175), 0 states have call successors, (0), 0 states 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 20:10:23,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14234 states to 14234 states and 20175 transitions. [2022-11-02 20:10:23,448 INFO L78 Accepts]: Start accepts. Automaton has 14234 states and 20175 transitions. Word has length 266 [2022-11-02 20:10:23,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:10:23,449 INFO L495 AbstractCegarLoop]: Abstraction has 14234 states and 20175 transitions. [2022-11-02 20:10:23,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 13.894736842105264) internal successors, (264), 19 states have internal predecessors, (264), 0 states have call successors, (0), 0 states 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 20:10:23,449 INFO L276 IsEmpty]: Start isEmpty. Operand 14234 states and 20175 transitions. [2022-11-02 20:10:23,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2022-11-02 20:10:23,472 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:10:23,472 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:10:23,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2022-11-02 20:10:23,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:10:23,692 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:10:23,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:10:23,692 INFO L85 PathProgramCache]: Analyzing trace with hash -366043125, now seen corresponding path program 1 times [2022-11-02 20:10:23,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:10:23,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1853524794] [2022-11-02 20:10:23,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:10:23,694 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:10:23,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:10:23,695 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:10:23,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2022-11-02 20:10:24,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:24,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 1192 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:10:24,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:10:24,505 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 178 proven. 44 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-02 20:10:24,506 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:10:24,777 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 221 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-02 20:10:24,778 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:10:24,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1853524794] [2022-11-02 20:10:24,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1853524794] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:10:24,779 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:10:24,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-11-02 20:10:24,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636968338] [2022-11-02 20:10:24,779 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:10:24,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:10:24,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:10:24,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:10:24,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:10:24,781 INFO L87 Difference]: Start difference. First operand 14234 states and 20175 transitions. Second operand has 11 states, 11 states have (on average 27.636363636363637) internal successors, (304), 11 states have internal predecessors, (304), 0 states have call successors, (0), 0 states 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 20:10:26,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:10:26,281 INFO L93 Difference]: Finished difference Result 76434 states and 108723 transitions. [2022-11-02 20:10:26,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:10:26,282 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 27.636363636363637) internal successors, (304), 11 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 266 [2022-11-02 20:10:26,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:10:26,322 INFO L225 Difference]: With dead ends: 76434 [2022-11-02 20:10:26,322 INFO L226 Difference]: Without dead ends: 62336 [2022-11-02 20:10:26,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 536 GetRequests, 521 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:10:26,336 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 1098 mSDsluCounter, 1144 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1098 SdHoareTripleChecker+Valid, 1360 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:10:26,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1098 Valid, 1360 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:10:26,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62336 states. [2022-11-02 20:10:27,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62336 to 28330. [2022-11-02 20:10:27,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28330 states, 28329 states have (on average 1.412792544742137) internal successors, (40023), 28329 states have internal predecessors, (40023), 0 states have call successors, (0), 0 states 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 20:10:27,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28330 states to 28330 states and 40023 transitions. [2022-11-02 20:10:27,244 INFO L78 Accepts]: Start accepts. Automaton has 28330 states and 40023 transitions. Word has length 266 [2022-11-02 20:10:27,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:10:27,245 INFO L495 AbstractCegarLoop]: Abstraction has 28330 states and 40023 transitions. [2022-11-02 20:10:27,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 27.636363636363637) internal successors, (304), 11 states have internal predecessors, (304), 0 states have call successors, (0), 0 states 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 20:10:27,245 INFO L276 IsEmpty]: Start isEmpty. Operand 28330 states and 40023 transitions. [2022-11-02 20:10:27,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2022-11-02 20:10:27,285 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:10:27,285 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:10:27,305 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (51)] Forceful destruction successful, exit code 0 [2022-11-02 20:10:27,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:10:27,505 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:10:27,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:10:27,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1983483575, now seen corresponding path program 2 times [2022-11-02 20:10:27,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:10:27,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [139628312] [2022-11-02 20:10:27,507 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:10:27,507 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:10:27,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:10:27,508 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:10:27,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2022-11-02 20:10:27,899 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:10:27,899 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:10:27,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 1192 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-02 20:10:27,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:10:28,336 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 178 proven. 48 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-02 20:10:28,336 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:10:28,683 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 178 proven. 48 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-02 20:10:28,683 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:10:28,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [139628312] [2022-11-02 20:10:28,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [139628312] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:10:28,683 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:10:28,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2022-11-02 20:10:28,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892951826] [2022-11-02 20:10:28,684 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:10:28,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 20:10:28,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:10:28,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 20:10:28,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:10:28,686 INFO L87 Difference]: Start difference. First operand 28330 states and 40023 transitions. Second operand has 19 states, 19 states have (on average 14.526315789473685) internal successors, (276), 19 states have internal predecessors, (276), 0 states have call successors, (0), 0 states 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 20:10:32,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:10:32,980 INFO L93 Difference]: Finished difference Result 206870 states and 294211 transitions. [2022-11-02 20:10:32,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-02 20:10:32,980 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 14.526315789473685) internal successors, (276), 19 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 266 [2022-11-02 20:10:32,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:10:33,128 INFO L225 Difference]: With dead ends: 206870 [2022-11-02 20:10:33,128 INFO L226 Difference]: Without dead ends: 178676 [2022-11-02 20:10:33,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 562 GetRequests, 513 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 525 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=578, Invalid=1972, Unknown=0, NotChecked=0, Total=2550 [2022-11-02 20:10:33,163 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 3650 mSDsluCounter, 1739 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3650 SdHoareTripleChecker+Valid, 1889 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:10:33,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3650 Valid, 1889 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 20:10:33,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178676 states. [2022-11-02 20:10:35,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178676 to 58714. [2022-11-02 20:10:35,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58714 states, 58713 states have (on average 1.4042034983734437) internal successors, (82445), 58713 states have internal predecessors, (82445), 0 states have call successors, (0), 0 states 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 20:10:35,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58714 states to 58714 states and 82445 transitions. [2022-11-02 20:10:35,585 INFO L78 Accepts]: Start accepts. Automaton has 58714 states and 82445 transitions. Word has length 266 [2022-11-02 20:10:35,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:10:35,586 INFO L495 AbstractCegarLoop]: Abstraction has 58714 states and 82445 transitions. [2022-11-02 20:10:35,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 14.526315789473685) internal successors, (276), 19 states have internal predecessors, (276), 0 states have call successors, (0), 0 states 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 20:10:35,586 INFO L276 IsEmpty]: Start isEmpty. Operand 58714 states and 82445 transitions. [2022-11-02 20:10:35,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2022-11-02 20:10:35,626 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:10:35,626 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:10:35,641 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (52)] Forceful destruction successful, exit code 0 [2022-11-02 20:10:35,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:10:35,837 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:10:35,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:10:35,837 INFO L85 PathProgramCache]: Analyzing trace with hash 2089250569, now seen corresponding path program 1 times [2022-11-02 20:10:35,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:10:35,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1767857316] [2022-11-02 20:10:35,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:10:35,838 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:10:35,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:10:35,839 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:10:35,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2022-11-02 20:10:36,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:36,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 1192 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:10:36,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:10:36,701 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 178 proven. 50 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-02 20:10:36,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:10:36,950 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 227 proven. 1 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-02 20:10:36,951 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:10:36,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1767857316] [2022-11-02 20:10:36,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1767857316] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:10:36,951 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:10:36,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-11-02 20:10:36,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551629222] [2022-11-02 20:10:36,951 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:10:36,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:10:36,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:10:36,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:10:36,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:10:36,953 INFO L87 Difference]: Start difference. First operand 58714 states and 82445 transitions. Second operand has 11 states, 11 states have (on average 28.181818181818183) internal successors, (310), 11 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 20:10:39,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:10:39,558 INFO L93 Difference]: Finished difference Result 141922 states and 200161 transitions. [2022-11-02 20:10:39,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:10:39,558 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 28.181818181818183) internal successors, (310), 11 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 266 [2022-11-02 20:10:39,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:10:39,635 INFO L225 Difference]: With dead ends: 141922 [2022-11-02 20:10:39,635 INFO L226 Difference]: Without dead ends: 109664 [2022-11-02 20:10:39,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 536 GetRequests, 521 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:10:39,664 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 1031 mSDsluCounter, 1338 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1031 SdHoareTripleChecker+Valid, 1554 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:10:39,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1031 Valid, 1554 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:10:39,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109664 states. [2022-11-02 20:10:41,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109664 to 58714. [2022-11-02 20:10:41,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58714 states, 58713 states have (on average 1.398208233270315) internal successors, (82093), 58713 states have internal predecessors, (82093), 0 states have call successors, (0), 0 states 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 20:10:41,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58714 states to 58714 states and 82093 transitions. [2022-11-02 20:10:41,771 INFO L78 Accepts]: Start accepts. Automaton has 58714 states and 82093 transitions. Word has length 266 [2022-11-02 20:10:41,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:10:41,771 INFO L495 AbstractCegarLoop]: Abstraction has 58714 states and 82093 transitions. [2022-11-02 20:10:41,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 28.181818181818183) internal successors, (310), 11 states have internal predecessors, (310), 0 states have call successors, (0), 0 states 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 20:10:41,771 INFO L276 IsEmpty]: Start isEmpty. Operand 58714 states and 82093 transitions. [2022-11-02 20:10:41,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2022-11-02 20:10:41,829 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:10:41,829 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:10:41,848 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (53)] Ended with exit code 0 [2022-11-02 20:10:42,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:10:42,048 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:10:42,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:10:42,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1504478919, now seen corresponding path program 2 times [2022-11-02 20:10:42,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:10:42,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1671758294] [2022-11-02 20:10:42,050 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:10:42,050 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:10:42,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:10:42,051 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:10:42,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2022-11-02 20:10:42,415 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:10:42,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:10:42,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 1192 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-02 20:10:42,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:10:43,034 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 178 proven. 52 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-02 20:10:43,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:10:43,471 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 178 proven. 52 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-02 20:10:43,471 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:10:43,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1671758294] [2022-11-02 20:10:43,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1671758294] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:10:43,471 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:10:43,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2022-11-02 20:10:43,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365683089] [2022-11-02 20:10:43,472 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:10:43,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-02 20:10:43,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:10:43,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-02 20:10:43,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2022-11-02 20:10:43,473 INFO L87 Difference]: Start difference. First operand 58714 states and 82093 transitions. Second operand has 24 states, 24 states have (on average 15.416666666666666) internal successors, (370), 24 states have internal predecessors, (370), 0 states have call successors, (0), 0 states 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 20:10:52,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:10:52,173 INFO L93 Difference]: Finished difference Result 270272 states and 376520 transitions. [2022-11-02 20:10:52,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-11-02 20:10:52,174 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 15.416666666666666) internal successors, (370), 24 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 266 [2022-11-02 20:10:52,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:10:52,351 INFO L225 Difference]: With dead ends: 270272 [2022-11-02 20:10:52,352 INFO L226 Difference]: Without dead ends: 238014 [2022-11-02 20:10:52,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 598 GetRequests, 508 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2416 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1627, Invalid=6745, Unknown=0, NotChecked=0, Total=8372 [2022-11-02 20:10:52,400 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 5575 mSDsluCounter, 3237 mSDsCounter, 0 mSdLazyCounter, 908 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5575 SdHoareTripleChecker+Valid, 3388 SdHoareTripleChecker+Invalid, 1060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:10:52,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5575 Valid, 3388 Invalid, 1060 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 908 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-02 20:10:52,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238014 states. [2022-11-02 20:10:54,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238014 to 61530. [2022-11-02 20:10:54,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61530 states, 61529 states have (on average 1.3857043020364381) internal successors, (85261), 61529 states have internal predecessors, (85261), 0 states have call successors, (0), 0 states 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 20:10:54,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61530 states to 61530 states and 85261 transitions. [2022-11-02 20:10:54,861 INFO L78 Accepts]: Start accepts. Automaton has 61530 states and 85261 transitions. Word has length 266 [2022-11-02 20:10:54,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:10:54,862 INFO L495 AbstractCegarLoop]: Abstraction has 61530 states and 85261 transitions. [2022-11-02 20:10:54,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 15.416666666666666) internal successors, (370), 24 states have internal predecessors, (370), 0 states have call successors, (0), 0 states 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 20:10:54,862 INFO L276 IsEmpty]: Start isEmpty. Operand 61530 states and 85261 transitions. [2022-11-02 20:10:54,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2022-11-02 20:10:54,927 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:10:54,928 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:10:54,946 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (54)] Forceful destruction successful, exit code 0 [2022-11-02 20:10:55,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:10:55,141 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:10:55,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:10:55,141 INFO L85 PathProgramCache]: Analyzing trace with hash -515462905, now seen corresponding path program 1 times [2022-11-02 20:10:55,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:10:55,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [301880655] [2022-11-02 20:10:55,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:10:55,142 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:10:55,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:10:55,143 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:10:55,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2022-11-02 20:10:55,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:55,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 1192 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-02 20:10:55,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:10:55,871 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 178 proven. 54 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-02 20:10:55,871 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:10:56,205 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 178 proven. 54 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-02 20:10:56,205 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:10:56,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [301880655] [2022-11-02 20:10:56,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [301880655] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:10:56,205 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:10:56,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2022-11-02 20:10:56,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759072212] [2022-11-02 20:10:56,206 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:10:56,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 20:10:56,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:10:56,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 20:10:56,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:10:56,207 INFO L87 Difference]: Start difference. First operand 61530 states and 85261 transitions. Second operand has 19 states, 19 states have (on average 14.842105263157896) internal successors, (282), 19 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:11:02,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:11:02,226 INFO L93 Difference]: Finished difference Result 227802 states and 319389 transitions. [2022-11-02 20:11:02,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-11-02 20:11:02,227 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 14.842105263157896) internal successors, (282), 19 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 266 [2022-11-02 20:11:02,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:11:02,457 INFO L225 Difference]: With dead ends: 227802 [2022-11-02 20:11:02,457 INFO L226 Difference]: Without dead ends: 194008 [2022-11-02 20:11:02,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 575 GetRequests, 513 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1022 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=881, Invalid=3151, Unknown=0, NotChecked=0, Total=4032 [2022-11-02 20:11:02,489 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 4184 mSDsluCounter, 2281 mSDsCounter, 0 mSdLazyCounter, 648 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4184 SdHoareTripleChecker+Valid, 2445 SdHoareTripleChecker+Invalid, 750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:11:02,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4184 Valid, 2445 Invalid, 750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 648 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 20:11:02,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194008 states. [2022-11-02 20:11:04,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194008 to 62938. [2022-11-02 20:11:04,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62938 states, 62937 states have (on average 1.3770754881865992) internal successors, (86669), 62937 states have internal predecessors, (86669), 0 states have call successors, (0), 0 states 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 20:11:04,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62938 states to 62938 states and 86669 transitions. [2022-11-02 20:11:04,889 INFO L78 Accepts]: Start accepts. Automaton has 62938 states and 86669 transitions. Word has length 266 [2022-11-02 20:11:04,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:11:04,889 INFO L495 AbstractCegarLoop]: Abstraction has 62938 states and 86669 transitions. [2022-11-02 20:11:04,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 14.842105263157896) internal successors, (282), 19 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:11:04,890 INFO L276 IsEmpty]: Start isEmpty. Operand 62938 states and 86669 transitions. [2022-11-02 20:11:04,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2022-11-02 20:11:04,934 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:11:04,934 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:11:04,946 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (55)] Ended with exit code 0 [2022-11-02 20:11:05,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:11:05,135 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:11:05,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:11:05,135 INFO L85 PathProgramCache]: Analyzing trace with hash -552917939, now seen corresponding path program 1 times [2022-11-02 20:11:05,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:11:05,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1705015698] [2022-11-02 20:11:05,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:11:05,137 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:11:05,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:11:05,141 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:11:05,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c37fd25-d185-44f9-a509-91ce86e7e1fd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2022-11-02 20:11:05,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:11:05,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 1192 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-02 20:11:05,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:11:06,347 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 178 proven. 56 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-02 20:11:06,347 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:11:06,660 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 178 proven. 56 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-02 20:11:06,661 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:11:06,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1705015698] [2022-11-02 20:11:06,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1705015698] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:11:06,661 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:11:06,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2022-11-02 20:11:06,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372152197] [2022-11-02 20:11:06,662 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:11:06,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-02 20:11:06,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:11:06,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-02 20:11:06,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:11:06,663 INFO L87 Difference]: Start difference. First operand 62938 states and 86669 transitions. Second operand has 13 states, 13 states have (on average 29.0) internal successors, (377), 13 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)