./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p03.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/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_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p03.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/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_6045fdac-fb19-4a3e-a514-9196689c945b/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 e5eb077c5bf07ad9cd5f1254ee07af63ac3804cfdd9319e30c731bec514d1921 --- 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 21:00:34,817 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:00:34,820 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:00:34,875 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:00:34,875 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:00:34,879 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:00:34,882 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:00:34,887 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:00:34,889 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:00:34,891 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:00:34,892 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:00:34,894 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:00:34,894 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:00:34,896 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:00:34,897 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:00:34,898 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:00:34,899 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:00:34,900 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:00:34,902 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:00:34,904 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:00:34,906 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:00:34,917 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:00:34,918 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:00:34,919 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:00:34,923 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:00:34,924 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:00:34,924 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:00:34,925 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:00:34,928 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:00:34,929 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:00:34,934 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:00:34,935 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:00:34,936 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:00:34,937 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:00:34,938 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:00:34,940 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:00:34,941 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:00:34,942 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:00:34,942 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:00:34,943 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:00:34,944 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:00:34,945 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-02 21:00:34,985 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:00:34,985 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:00:34,986 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:00:34,986 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:00:34,987 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:00:34,988 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:00:34,989 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:00:34,989 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:00:34,989 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:00:34,990 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:00:34,991 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 21:00:34,991 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:00:34,991 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:00:34,992 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:00:34,992 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:00:34,992 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:00:34,992 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:00:34,993 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:00:34,993 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:00:34,993 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:00:34,993 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:00:34,994 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:00:34,994 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:00:34,995 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:00:34,995 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:00:34,995 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 21:00:34,997 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 21:00:34,997 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 21:00:34,997 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 21:00:34,998 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:00:34,998 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_6045fdac-fb19-4a3e-a514-9196689c945b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e5eb077c5bf07ad9cd5f1254ee07af63ac3804cfdd9319e30c731bec514d1921 [2022-11-02 21:00:35,348 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:00:35,386 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:00:35,391 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:00:35,392 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:00:35,393 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:00:35,395 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p03.c [2022-11-02 21:00:35,471 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/data/ef26d1501/bdfdab98e02e45ab8622682a0bc9d824/FLAG4df9cd067 [2022-11-02 21:00:36,013 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:00:36,014 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p03.c [2022-11-02 21:00:36,022 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/data/ef26d1501/bdfdab98e02e45ab8622682a0bc9d824/FLAG4df9cd067 [2022-11-02 21:00:36,347 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/data/ef26d1501/bdfdab98e02e45ab8622682a0bc9d824 [2022-11-02 21:00:36,350 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:00:36,351 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:00:36,353 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:00:36,353 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:00:36,362 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:00:36,363 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:00:36" (1/1) ... [2022-11-02 21:00:36,366 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1add296a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:36, skipping insertion in model container [2022-11-02 21:00:36,368 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:00:36" (1/1) ... [2022-11-02 21:00:36,376 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:00:36,415 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:00:36,613 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_6045fdac-fb19-4a3e-a514-9196689c945b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p03.c[1107,1120] [2022-11-02 21:00:36,794 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:00:36,797 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:00:36,809 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_6045fdac-fb19-4a3e-a514-9196689c945b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p03.c[1107,1120] [2022-11-02 21:00:36,860 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:00:36,873 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:00:36,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:36 WrapperNode [2022-11-02 21:00:36,874 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:00:36,875 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:00:36,875 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:00:36,875 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:00:36,888 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:36" (1/1) ... [2022-11-02 21:00:36,914 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:36" (1/1) ... [2022-11-02 21:00:36,997 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 541 [2022-11-02 21:00:37,003 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:00:37,004 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:00:37,005 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:00:37,005 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:00:37,015 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:36" (1/1) ... [2022-11-02 21:00:37,015 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:36" (1/1) ... [2022-11-02 21:00:37,035 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:36" (1/1) ... [2022-11-02 21:00:37,039 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:36" (1/1) ... [2022-11-02 21:00:37,053 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:36" (1/1) ... [2022-11-02 21:00:37,058 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:36" (1/1) ... [2022-11-02 21:00:37,061 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:36" (1/1) ... [2022-11-02 21:00:37,064 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:36" (1/1) ... [2022-11-02 21:00:37,070 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:00:37,071 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:00:37,071 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:00:37,071 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:00:37,072 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:36" (1/1) ... [2022-11-02 21:00:37,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:00:37,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:00:37,103 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:00:37,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:00:37,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:00:37,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:00:37,362 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:00:37,380 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:00:38,007 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:00:38,016 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:00:38,016 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 21:00:38,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:00:38 BoogieIcfgContainer [2022-11-02 21:00:38,019 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:00:38,022 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:00:38,022 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:00:38,027 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:00:38,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:00:36" (1/3) ... [2022-11-02 21:00:38,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22ef6200 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:00:38, skipping insertion in model container [2022-11-02 21:00:38,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:36" (2/3) ... [2022-11-02 21:00:38,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22ef6200 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:00:38, skipping insertion in model container [2022-11-02 21:00:38,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:00:38" (3/3) ... [2022-11-02 21:00:38,033 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p03.c [2022-11-02 21:00:38,054 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:00:38,054 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 21:00:38,126 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:00:38,133 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;@6e9bb82b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:00:38,133 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 21:00:38,147 INFO L276 IsEmpty]: Start isEmpty. Operand has 83 states, 81 states have (on average 1.4938271604938271) internal successors, (121), 82 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 21:00:38,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 21:00:38,153 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:38,154 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 21:00:38,155 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:38,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:38,160 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-02 21:00:38,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:38,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255405868] [2022-11-02 21:00:38,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:38,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:38,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:00:38,553 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 21:00:38,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:00:38,661 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 21:00:38,663 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 21:00:38,665 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-02 21:00:38,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 21:00:38,672 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-02 21:00:38,677 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 21:00:38,712 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-02 21:00:38,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 09:00:38 BoogieIcfgContainer [2022-11-02 21:00:38,722 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 21:00:38,723 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 21:00:38,723 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 21:00:38,724 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 21:00:38,724 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:00:38" (3/4) ... [2022-11-02 21:00:38,728 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-02 21:00:38,728 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 21:00:38,729 INFO L158 Benchmark]: Toolchain (without parser) took 2377.70ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 54.2MB in the beginning and 56.1MB in the end (delta: -1.8MB). Peak memory consumption was 16.3MB. Max. memory is 16.1GB. [2022-11-02 21:00:38,730 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 90.2MB. Free memory was 63.0MB in the beginning and 62.9MB in the end (delta: 21.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 21:00:38,731 INFO L158 Benchmark]: CACSL2BoogieTranslator took 521.24ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 54.1MB in the beginning and 77.4MB in the end (delta: -23.4MB). Peak memory consumption was 5.6MB. Max. memory is 16.1GB. [2022-11-02 21:00:38,732 INFO L158 Benchmark]: Boogie Procedure Inliner took 128.84ms. Allocated memory is still 109.1MB. Free memory was 77.4MB in the beginning and 71.9MB in the end (delta: 5.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-02 21:00:38,732 INFO L158 Benchmark]: Boogie Preprocessor took 65.91ms. Allocated memory is still 109.1MB. Free memory was 71.9MB in the beginning and 68.4MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-02 21:00:38,733 INFO L158 Benchmark]: RCFGBuilder took 947.75ms. Allocated memory is still 109.1MB. Free memory was 68.4MB in the beginning and 55.4MB in the end (delta: 13.0MB). Peak memory consumption was 19.7MB. Max. memory is 16.1GB. [2022-11-02 21:00:38,734 INFO L158 Benchmark]: TraceAbstraction took 700.57ms. Allocated memory is still 109.1MB. Free memory was 54.6MB in the beginning and 56.6MB in the end (delta: -2.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 21:00:38,734 INFO L158 Benchmark]: Witness Printer took 5.03ms. Allocated memory is still 109.1MB. Free memory was 56.6MB in the beginning and 56.1MB in the end (delta: 531.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 21:00:38,738 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 90.2MB. Free memory was 63.0MB in the beginning and 62.9MB in the end (delta: 21.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 521.24ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 54.1MB in the beginning and 77.4MB in the end (delta: -23.4MB). Peak memory consumption was 5.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 128.84ms. Allocated memory is still 109.1MB. Free memory was 77.4MB in the beginning and 71.9MB in the end (delta: 5.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 65.91ms. Allocated memory is still 109.1MB. Free memory was 71.9MB in the beginning and 68.4MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 947.75ms. Allocated memory is still 109.1MB. Free memory was 68.4MB in the beginning and 55.4MB in the end (delta: 13.0MB). Peak memory consumption was 19.7MB. Max. memory is 16.1GB. * TraceAbstraction took 700.57ms. Allocated memory is still 109.1MB. Free memory was 54.6MB in the beginning and 56.6MB in the end (delta: -2.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 5.03ms. Allocated memory is still 109.1MB. Free memory was 56.6MB in the beginning and 56.1MB in the end (delta: 531.7kB). 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 157, 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_7 mask_SORT_7 = (SORT_7)-1 >> (sizeof(SORT_7) * 8 - 10); [L32] const SORT_7 msb_SORT_7 = (SORT_7)1 << (10 - 1); [L34] const SORT_11 mask_SORT_11 = (SORT_11)-1 >> (sizeof(SORT_11) * 8 - 2); [L35] const SORT_11 msb_SORT_11 = (SORT_11)1 << (2 - 1); [L37] const SORT_13 mask_SORT_13 = (SORT_13)-1 >> (sizeof(SORT_13) * 8 - 32); [L38] const SORT_13 msb_SORT_13 = (SORT_13)1 << (32 - 1); [L40] const SORT_30 mask_SORT_30 = (SORT_30)-1 >> (sizeof(SORT_30) * 8 - 4); [L41] const SORT_30 msb_SORT_30 = (SORT_30)1 << (4 - 1); [L43] const SORT_7 var_8 = 0; [L44] const SORT_13 var_15 = 0; [L45] const SORT_1 var_19 = 1; [L46] const SORT_1 var_23 = 0; [L47] const SORT_13 var_74 = 1; [L48] const SORT_13 var_78 = 104; [L50] SORT_1 input_2; [L51] SORT_3 input_4; [L52] SORT_1 input_5; [L53] SORT_1 input_6; [L54] SORT_1 input_28; [L55] SORT_30 input_31; [L56] SORT_1 input_33; [L57] SORT_30 input_35; [L58] SORT_1 input_37; [L59] SORT_1 input_39; [L60] SORT_1 input_45; [L61] SORT_1 input_47; [L62] SORT_1 input_49; [L63] SORT_3 input_53; [L64] SORT_1 input_56; [L65] SORT_1 input_66; [L66] SORT_7 input_72; [L67] SORT_1 input_86; [L68] SORT_1 input_92; [L69] SORT_1 input_98; [L70] SORT_1 input_104; [L71] SORT_1 input_105; [L72] SORT_1 input_106; [L73] SORT_1 input_120; [L74] SORT_1 input_122; [L75] SORT_1 input_137; [L76] SORT_1 input_138; [L77] SORT_1 input_139; [L79] SORT_7 state_9 = __VERIFIER_nondet_ushort() & mask_SORT_7; [L80] SORT_1 state_24 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L81] SORT_1 state_26 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L82] SORT_1 state_41 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L83] SORT_1 state_43 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L84] SORT_1 state_51 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L85] SORT_1 state_58 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L86] SORT_1 state_60 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L87] SORT_1 state_62 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L88] SORT_1 state_64 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L89] SORT_1 state_68 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L90] SORT_1 state_70 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L92] SORT_7 init_10_arg_1 = var_8; [L93] state_9 = init_10_arg_1 [L94] SORT_1 init_25_arg_1 = var_23; [L95] state_24 = init_25_arg_1 [L96] SORT_1 init_27_arg_1 = var_23; [L97] state_26 = init_27_arg_1 [L98] SORT_1 init_42_arg_1 = var_23; [L99] state_41 = init_42_arg_1 [L100] SORT_1 init_44_arg_1 = var_23; [L101] state_43 = init_44_arg_1 [L102] SORT_1 init_52_arg_1 = var_19; [L103] state_51 = init_52_arg_1 [L104] SORT_1 init_59_arg_1 = var_23; [L105] state_58 = init_59_arg_1 [L106] SORT_1 init_61_arg_1 = var_23; [L107] state_60 = init_61_arg_1 [L108] SORT_1 init_63_arg_1 = var_23; [L109] state_62 = init_63_arg_1 [L110] SORT_1 init_65_arg_1 = var_23; [L111] state_64 = init_65_arg_1 [L112] SORT_1 init_69_arg_1 = var_23; [L113] state_68 = init_69_arg_1 [L114] SORT_1 init_71_arg_1 = var_23; [L115] state_70 = init_71_arg_1 VAL [init_10_arg_1=0, init_25_arg_1=0, init_27_arg_1=0, init_42_arg_1=0, init_44_arg_1=0, init_52_arg_1=1, init_59_arg_1=0, init_61_arg_1=0, init_63_arg_1=0, init_65_arg_1=0, init_69_arg_1=0, init_71_arg_1=0, mask_SORT_1=1, mask_SORT_11=3, mask_SORT_13=4294967295, mask_SORT_3=255, mask_SORT_30=15, mask_SORT_7=1023, msb_SORT_1=1, msb_SORT_11=2, msb_SORT_13=2147483648, msb_SORT_3=128, msb_SORT_30=8, msb_SORT_7=512, state_24=0, state_26=0, state_41=0, state_43=0, state_51=1, state_58=0, state_60=0, state_62=0, state_64=0, state_68=0, state_70=0, state_9=0, var_15=0, var_19=1, var_23=0, var_74=1, var_78=104, var_8=0] [L118] input_2 = __VERIFIER_nondet_uchar() [L119] input_4 = __VERIFIER_nondet_uchar() [L120] input_5 = __VERIFIER_nondet_uchar() [L121] input_6 = __VERIFIER_nondet_uchar() [L122] input_28 = __VERIFIER_nondet_uchar() [L123] input_31 = __VERIFIER_nondet_uchar() [L124] input_33 = __VERIFIER_nondet_uchar() [L125] input_35 = __VERIFIER_nondet_uchar() [L126] input_37 = __VERIFIER_nondet_uchar() [L127] input_39 = __VERIFIER_nondet_uchar() [L128] input_45 = __VERIFIER_nondet_uchar() [L129] input_47 = __VERIFIER_nondet_uchar() [L130] input_49 = __VERIFIER_nondet_uchar() [L131] input_53 = __VERIFIER_nondet_uchar() [L132] input_56 = __VERIFIER_nondet_uchar() [L133] input_66 = __VERIFIER_nondet_uchar() [L134] input_72 = __VERIFIER_nondet_ushort() [L135] input_86 = __VERIFIER_nondet_uchar() [L136] input_92 = __VERIFIER_nondet_uchar() [L137] input_98 = __VERIFIER_nondet_uchar() [L138] input_104 = __VERIFIER_nondet_uchar() [L139] input_105 = __VERIFIER_nondet_uchar() [L140] input_106 = __VERIFIER_nondet_uchar() [L141] input_120 = __VERIFIER_nondet_uchar() [L142] input_122 = __VERIFIER_nondet_uchar() [L143] input_137 = __VERIFIER_nondet_uchar() [L144] input_138 = __VERIFIER_nondet_uchar() [L145] input_139 = __VERIFIER_nondet_uchar() [L148] SORT_7 var_12_arg_0 = state_9; [L149] SORT_11 var_12 = var_12_arg_0 >> 8; [L150] SORT_11 var_14_arg_0 = var_12; [L151] var_14_arg_0 = var_14_arg_0 & mask_SORT_11 [L152] SORT_13 var_14 = var_14_arg_0; [L153] SORT_13 var_16_arg_0 = var_14; [L154] SORT_13 var_16_arg_1 = var_15; [L155] SORT_1 var_16 = var_16_arg_0 == var_16_arg_1; [L156] SORT_1 var_20_arg_0 = var_16; [L157] SORT_1 var_20 = ~var_20_arg_0; [L158] SORT_1 var_21_arg_0 = var_19; [L159] SORT_1 var_21_arg_1 = var_20; [L160] SORT_1 var_21 = var_21_arg_0 & var_21_arg_1; [L161] var_21 = var_21 & mask_SORT_1 [L162] SORT_1 bad_22_arg_0 = var_21; [L163] CALL __VERIFIER_assert(!(bad_22_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, 83 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, 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=83occurred 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, 0.3s 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 21:00:38,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/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_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p03.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/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_6045fdac-fb19-4a3e-a514-9196689c945b/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 e5eb077c5bf07ad9cd5f1254ee07af63ac3804cfdd9319e30c731bec514d1921 --- 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 21:00:41,272 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:00:41,274 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:00:41,309 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:00:41,310 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:00:41,314 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:00:41,317 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:00:41,323 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:00:41,328 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:00:41,330 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:00:41,331 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:00:41,333 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:00:41,334 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:00:41,338 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:00:41,341 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:00:41,342 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:00:41,344 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:00:41,345 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:00:41,347 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:00:41,349 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:00:41,351 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:00:41,352 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:00:41,354 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:00:41,355 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:00:41,358 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:00:41,359 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:00:41,359 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:00:41,360 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:00:41,361 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:00:41,362 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:00:41,362 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:00:41,363 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:00:41,364 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:00:41,365 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:00:41,367 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:00:41,367 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:00:41,368 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:00:41,368 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:00:41,369 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:00:41,370 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:00:41,371 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:00:41,372 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-02 21:00:41,411 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:00:41,412 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:00:41,414 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:00:41,414 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:00:41,415 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:00:41,415 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:00:41,417 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:00:41,417 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:00:41,417 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:00:41,418 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:00:41,419 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:00:41,419 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:00:41,419 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:00:41,420 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:00:41,420 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-02 21:00:41,420 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-02 21:00:41,421 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-02 21:00:41,421 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:00:41,421 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:00:41,421 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:00:41,422 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:00:41,422 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:00:41,422 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:00:41,422 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:00:41,423 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:00:41,423 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:00:41,423 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:00:41,424 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-02 21:00:41,424 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-02 21:00:41,424 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 21:00:41,424 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 21:00:41,424 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:00:41,425 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-02 21:00:41,425 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_6045fdac-fb19-4a3e-a514-9196689c945b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e5eb077c5bf07ad9cd5f1254ee07af63ac3804cfdd9319e30c731bec514d1921 [2022-11-02 21:00:41,824 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:00:41,848 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:00:41,852 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:00:41,853 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:00:41,854 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:00:41,856 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p03.c [2022-11-02 21:00:41,931 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/data/8103ae1af/2f67247b615b4cbbb59354e4f3b6d14c/FLAG298cfae5c [2022-11-02 21:00:42,592 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:00:42,593 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p03.c [2022-11-02 21:00:42,606 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/data/8103ae1af/2f67247b615b4cbbb59354e4f3b6d14c/FLAG298cfae5c [2022-11-02 21:00:42,882 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/data/8103ae1af/2f67247b615b4cbbb59354e4f3b6d14c [2022-11-02 21:00:42,886 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:00:42,888 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:00:42,891 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:00:42,892 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:00:42,895 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:00:42,896 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:00:42" (1/1) ... [2022-11-02 21:00:42,898 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14c282a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:42, skipping insertion in model container [2022-11-02 21:00:42,899 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:00:42" (1/1) ... [2022-11-02 21:00:42,907 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:00:42,962 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:00:43,118 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_6045fdac-fb19-4a3e-a514-9196689c945b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p03.c[1107,1120] [2022-11-02 21:00:43,278 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:00:43,281 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:00:43,292 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_6045fdac-fb19-4a3e-a514-9196689c945b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p03.c[1107,1120] [2022-11-02 21:00:43,383 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:00:43,405 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:00:43,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:43 WrapperNode [2022-11-02 21:00:43,406 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:00:43,407 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:00:43,407 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:00:43,408 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:00:43,415 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:43" (1/1) ... [2022-11-02 21:00:43,441 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:43" (1/1) ... [2022-11-02 21:00:43,500 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 541 [2022-11-02 21:00:43,500 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:00:43,501 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:00:43,501 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:00:43,501 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:00:43,511 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:43" (1/1) ... [2022-11-02 21:00:43,511 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:43" (1/1) ... [2022-11-02 21:00:43,528 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:43" (1/1) ... [2022-11-02 21:00:43,529 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:43" (1/1) ... [2022-11-02 21:00:43,557 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:43" (1/1) ... [2022-11-02 21:00:43,563 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:43" (1/1) ... [2022-11-02 21:00:43,565 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:43" (1/1) ... [2022-11-02 21:00:43,567 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:43" (1/1) ... [2022-11-02 21:00:43,572 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:00:43,573 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:00:43,573 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:00:43,574 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:00:43,574 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:43" (1/1) ... [2022-11-02 21:00:43,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:00:43,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:00:43,604 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:00:43,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:00:43,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:00:43,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:00:43,833 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:00:43,835 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:00:44,538 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:00:44,547 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:00:44,548 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 21:00:44,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:00:44 BoogieIcfgContainer [2022-11-02 21:00:44,552 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:00:44,554 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:00:44,556 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:00:44,560 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:00:44,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:00:42" (1/3) ... [2022-11-02 21:00:44,561 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a0a266d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:00:44, skipping insertion in model container [2022-11-02 21:00:44,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:43" (2/3) ... [2022-11-02 21:00:44,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a0a266d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:00:44, skipping insertion in model container [2022-11-02 21:00:44,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:00:44" (3/3) ... [2022-11-02 21:00:44,564 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p03.c [2022-11-02 21:00:44,583 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:00:44,584 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 21:00:44,674 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:00:44,683 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;@77716c76, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:00:44,684 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 21:00:44,689 INFO L276 IsEmpty]: Start isEmpty. Operand has 83 states, 81 states have (on average 1.4938271604938271) internal successors, (121), 82 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 21:00:44,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 21:00:44,696 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:44,696 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 21:00:44,697 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:44,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:44,705 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-02 21:00:44,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:00:44,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1303268941] [2022-11-02 21:00:44,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:44,722 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:00:44,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:00:44,726 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:00:44,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-02 21:00:44,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:44,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-02 21:00:44,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:45,188 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 21:00:45,189 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:00:45,190 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:00:45,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1303268941] [2022-11-02 21:00:45,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1303268941] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:45,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:45,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:00:45,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135728609] [2022-11-02 21:00:45,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:45,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:00:45,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:00:45,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:00:45,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:00:45,243 INFO L87 Difference]: Start difference. First operand has 83 states, 81 states have (on average 1.4938271604938271) internal successors, (121), 82 states have internal predecessors, (121), 0 states have call successors, (0), 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 21:00:45,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:45,441 INFO L93 Difference]: Finished difference Result 236 states and 354 transitions. [2022-11-02 21:00:45,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:00:45,444 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 21:00:45,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:45,453 INFO L225 Difference]: With dead ends: 236 [2022-11-02 21:00:45,454 INFO L226 Difference]: Without dead ends: 155 [2022-11-02 21:00:45,457 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 21:00:45,460 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 219 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:45,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 311 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:00:45,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2022-11-02 21:00:45,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 81. [2022-11-02 21:00:45,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.4625) internal successors, (117), 80 states have internal predecessors, (117), 0 states have call successors, (0), 0 states 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 21:00:45,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 117 transitions. [2022-11-02 21:00:45,504 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 117 transitions. Word has length 5 [2022-11-02 21:00:45,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:45,504 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 117 transitions. [2022-11-02 21:00:45,505 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 21:00:45,505 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 117 transitions. [2022-11-02 21:00:45,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 21:00:45,517 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:45,517 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] [2022-11-02 21:00:45,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-02 21:00:45,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:00:45,731 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:45,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:45,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1926009885, now seen corresponding path program 1 times [2022-11-02 21:00:45,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:00:45,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [894114743] [2022-11-02 21:00:45,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:45,734 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:00:45,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:00:45,735 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:00:45,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-02 21:00:45,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:46,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 21:00:46,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:46,132 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 21:00:46,132 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:00:46,138 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:00:46,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [894114743] [2022-11-02 21:00:46,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [894114743] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:46,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:46,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:00:46,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240759594] [2022-11-02 21:00:46,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:46,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:00:46,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:00:46,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:00:46,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:00:46,147 INFO L87 Difference]: Start difference. First operand 81 states and 117 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 21:00:46,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:46,231 INFO L93 Difference]: Finished difference Result 307 states and 450 transitions. [2022-11-02 21:00:46,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:00:46,232 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2022-11-02 21:00:46,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:46,233 INFO L225 Difference]: With dead ends: 307 [2022-11-02 21:00:46,234 INFO L226 Difference]: Without dead ends: 230 [2022-11-02 21:00:46,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 77 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 21:00:46,235 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 324 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 438 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 21:00:46,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [324 Valid, 438 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:00:46,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-02 21:00:46,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 83. [2022-11-02 21:00:46,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.451219512195122) internal successors, (119), 82 states have internal predecessors, (119), 0 states have call successors, (0), 0 states 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 21:00:46,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 119 transitions. [2022-11-02 21:00:46,246 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 119 transitions. Word has length 80 [2022-11-02 21:00:46,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:46,246 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 119 transitions. [2022-11-02 21:00:46,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 21:00:46,247 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 119 transitions. [2022-11-02 21:00:46,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 21:00:46,249 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:46,249 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] [2022-11-02 21:00:46,263 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-02 21:00:46,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:00:46,463 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:46,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:46,463 INFO L85 PathProgramCache]: Analyzing trace with hash -634852961, now seen corresponding path program 1 times [2022-11-02 21:00:46,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:00:46,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [944692445] [2022-11-02 21:00:46,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:46,465 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:00:46,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:00:46,466 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:00:46,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-02 21:00:46,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:46,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:00:46,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:46,791 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 21:00:46,792 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:00:46,792 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:00:46,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [944692445] [2022-11-02 21:00:46,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [944692445] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:46,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:46,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:00:46,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758169261] [2022-11-02 21:00:46,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:46,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:00:46,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:00:46,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:00:46,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:00:46,801 INFO L87 Difference]: Start difference. First operand 83 states and 119 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 21:00:46,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:46,872 INFO L93 Difference]: Finished difference Result 307 states and 449 transitions. [2022-11-02 21:00:46,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:00:46,873 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2022-11-02 21:00:46,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:46,876 INFO L225 Difference]: With dead ends: 307 [2022-11-02 21:00:46,876 INFO L226 Difference]: Without dead ends: 230 [2022-11-02 21:00:46,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 77 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 21:00:46,882 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 313 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 419 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 21:00:46,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [313 Valid, 419 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:00:46,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-02 21:00:46,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 87. [2022-11-02 21:00:46,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 1.441860465116279) internal successors, (124), 86 states have internal predecessors, (124), 0 states have call successors, (0), 0 states 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 21:00:46,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 124 transitions. [2022-11-02 21:00:46,901 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 124 transitions. Word has length 80 [2022-11-02 21:00:46,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:46,902 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 124 transitions. [2022-11-02 21:00:46,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 21:00:46,903 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 124 transitions. [2022-11-02 21:00:46,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 21:00:46,904 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:46,904 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] [2022-11-02 21:00:46,918 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-02 21:00:47,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:00:47,118 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:47,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:47,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1602203615, now seen corresponding path program 1 times [2022-11-02 21:00:47,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:00:47,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1635454922] [2022-11-02 21:00:47,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:47,120 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:00:47,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:00:47,121 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:00:47,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-02 21:00:47,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:47,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:00:47,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:47,398 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 21:00:47,399 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:00:47,399 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:00:47,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1635454922] [2022-11-02 21:00:47,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1635454922] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:47,400 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:47,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:00:47,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791679052] [2022-11-02 21:00:47,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:47,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:00:47,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:00:47,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:00:47,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:00:47,402 INFO L87 Difference]: Start difference. First operand 87 states and 124 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 21:00:47,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:47,434 INFO L93 Difference]: Finished difference Result 307 states and 448 transitions. [2022-11-02 21:00:47,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:00:47,435 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2022-11-02 21:00:47,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:47,436 INFO L225 Difference]: With dead ends: 307 [2022-11-02 21:00:47,436 INFO L226 Difference]: Without dead ends: 230 [2022-11-02 21:00:47,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 77 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 21:00:47,438 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 307 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 439 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 21:00:47,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 439 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:00:47,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-02 21:00:47,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 89. [2022-11-02 21:00:47,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 1.4318181818181819) internal successors, (126), 88 states have internal predecessors, (126), 0 states have call successors, (0), 0 states 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 21:00:47,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 126 transitions. [2022-11-02 21:00:47,446 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 126 transitions. Word has length 80 [2022-11-02 21:00:47,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:47,446 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 126 transitions. [2022-11-02 21:00:47,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 21:00:47,447 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 126 transitions. [2022-11-02 21:00:47,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 21:00:47,448 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:47,448 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] [2022-11-02 21:00:47,471 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-02 21:00:47,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:00:47,662 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:47,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:47,662 INFO L85 PathProgramCache]: Analyzing trace with hash -2094829789, now seen corresponding path program 1 times [2022-11-02 21:00:47,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:00:47,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2076151847] [2022-11-02 21:00:47,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:47,664 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:00:47,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:00:47,665 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:00:47,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-02 21:00:47,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:47,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:00:47,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:47,949 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 21:00:47,949 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:00:47,950 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:00:47,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2076151847] [2022-11-02 21:00:47,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2076151847] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:47,950 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:47,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:00:47,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531582210] [2022-11-02 21:00:47,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:47,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:00:47,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:00:47,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:00:47,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:00:47,953 INFO L87 Difference]: Start difference. First operand 89 states and 126 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 21:00:47,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:47,984 INFO L93 Difference]: Finished difference Result 307 states and 447 transitions. [2022-11-02 21:00:47,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:00:47,985 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2022-11-02 21:00:47,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:47,987 INFO L225 Difference]: With dead ends: 307 [2022-11-02 21:00:47,987 INFO L226 Difference]: Without dead ends: 230 [2022-11-02 21:00:47,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 77 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 21:00:47,988 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 301 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 438 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 21:00:47,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [301 Valid, 438 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:00:47,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-02 21:00:47,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 91. [2022-11-02 21:00:47,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 1.4222222222222223) internal successors, (128), 90 states have internal predecessors, (128), 0 states have call successors, (0), 0 states 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 21:00:47,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 128 transitions. [2022-11-02 21:00:47,997 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 128 transitions. Word has length 80 [2022-11-02 21:00:47,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:47,998 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 128 transitions. [2022-11-02 21:00:47,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 21:00:47,998 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 128 transitions. [2022-11-02 21:00:47,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 21:00:47,999 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:47,999 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] [2022-11-02 21:00:48,019 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-02 21:00:48,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:00:48,220 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:48,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:48,220 INFO L85 PathProgramCache]: Analyzing trace with hash 983983781, now seen corresponding path program 1 times [2022-11-02 21:00:48,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:00:48,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2141196580] [2022-11-02 21:00:48,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:48,222 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:00:48,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:00:48,223 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:00:48,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-02 21:00:48,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:48,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:00:48,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:48,501 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 21:00:48,502 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:00:48,502 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:00:48,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2141196580] [2022-11-02 21:00:48,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2141196580] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:48,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:48,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:00:48,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839622843] [2022-11-02 21:00:48,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:48,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:00:48,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:00:48,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:00:48,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:00:48,505 INFO L87 Difference]: Start difference. First operand 91 states and 128 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 21:00:48,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:48,550 INFO L93 Difference]: Finished difference Result 307 states and 446 transitions. [2022-11-02 21:00:48,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:00:48,551 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2022-11-02 21:00:48,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:48,552 INFO L225 Difference]: With dead ends: 307 [2022-11-02 21:00:48,552 INFO L226 Difference]: Without dead ends: 230 [2022-11-02 21:00:48,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 77 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 21:00:48,553 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 290 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 434 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 21:00:48,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 434 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:00:48,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-02 21:00:48,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 95. [2022-11-02 21:00:48,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.4148936170212767) internal successors, (133), 94 states have internal predecessors, (133), 0 states have call successors, (0), 0 states 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 21:00:48,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 133 transitions. [2022-11-02 21:00:48,561 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 133 transitions. Word has length 80 [2022-11-02 21:00:48,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:48,561 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 133 transitions. [2022-11-02 21:00:48,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 21:00:48,562 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 133 transitions. [2022-11-02 21:00:48,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 21:00:48,563 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:48,563 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] [2022-11-02 21:00:48,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-02 21:00:48,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:00:48,782 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:48,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:48,782 INFO L85 PathProgramCache]: Analyzing trace with hash 566587175, now seen corresponding path program 1 times [2022-11-02 21:00:48,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:00:48,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [988060915] [2022-11-02 21:00:48,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:48,783 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:00:48,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:00:48,784 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:00:48,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-02 21:00:49,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:49,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:00:49,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:49,061 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 21:00:49,062 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:00:49,062 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:00:49,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [988060915] [2022-11-02 21:00:49,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [988060915] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:49,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:49,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:00:49,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501237080] [2022-11-02 21:00:49,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:49,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:00:49,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:00:49,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:00:49,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:00:49,065 INFO L87 Difference]: Start difference. First operand 95 states and 133 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 21:00:49,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:49,111 INFO L93 Difference]: Finished difference Result 307 states and 445 transitions. [2022-11-02 21:00:49,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:00:49,111 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2022-11-02 21:00:49,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:49,112 INFO L225 Difference]: With dead ends: 307 [2022-11-02 21:00:49,113 INFO L226 Difference]: Without dead ends: 230 [2022-11-02 21:00:49,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 77 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 21:00:49,115 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 284 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 433 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 21:00:49,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [284 Valid, 433 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:00:49,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-02 21:00:49,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 97. [2022-11-02 21:00:49,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 1.40625) internal successors, (135), 96 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 21:00:49,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 135 transitions. [2022-11-02 21:00:49,130 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 135 transitions. Word has length 80 [2022-11-02 21:00:49,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:49,131 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 135 transitions. [2022-11-02 21:00:49,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 21:00:49,132 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 135 transitions. [2022-11-02 21:00:49,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 21:00:49,138 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:49,143 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] [2022-11-02 21:00:49,157 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-02 21:00:49,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:00:49,358 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:49,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:49,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1766805463, now seen corresponding path program 1 times [2022-11-02 21:00:49,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:00:49,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1801951272] [2022-11-02 21:00:49,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:49,359 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:00:49,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:00:49,360 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:00:49,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-02 21:00:49,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:49,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 21:00:49,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:49,726 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 21:00:49,726 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:00:49,727 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:00:49,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1801951272] [2022-11-02 21:00:49,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1801951272] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:49,727 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:49,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:00:49,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610613673] [2022-11-02 21:00:49,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:49,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:00:49,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:00:49,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:00:49,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:00:49,730 INFO L87 Difference]: Start difference. First operand 97 states and 135 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 21:00:49,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:49,833 INFO L93 Difference]: Finished difference Result 252 states and 362 transitions. [2022-11-02 21:00:49,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:00:49,834 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2022-11-02 21:00:49,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:49,835 INFO L225 Difference]: With dead ends: 252 [2022-11-02 21:00:49,835 INFO L226 Difference]: Without dead ends: 175 [2022-11-02 21:00:49,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 76 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 21:00:49,837 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 307 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:49,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 437 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:00:49,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2022-11-02 21:00:49,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 99. [2022-11-02 21:00:49,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 1.3979591836734695) internal successors, (137), 98 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 21:00:49,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 137 transitions. [2022-11-02 21:00:49,842 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 137 transitions. Word has length 80 [2022-11-02 21:00:49,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:49,843 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 137 transitions. [2022-11-02 21:00:49,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 21:00:49,843 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 137 transitions. [2022-11-02 21:00:49,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 21:00:49,844 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:49,844 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] [2022-11-02 21:00:49,869 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-02 21:00:50,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:00:50,058 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:50,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:50,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1967462055, now seen corresponding path program 1 times [2022-11-02 21:00:50,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:00:50,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [444815906] [2022-11-02 21:00:50,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:50,060 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:00:50,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:00:50,061 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:00:50,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-02 21:00:50,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:50,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:00:50,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:50,336 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 21:00:50,336 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:00:50,336 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:00:50,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [444815906] [2022-11-02 21:00:50,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [444815906] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:50,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:50,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:00:50,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426284855] [2022-11-02 21:00:50,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:50,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:00:50,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:00:50,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:00:50,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:00:50,338 INFO L87 Difference]: Start difference. First operand 99 states and 137 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 21:00:50,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:50,377 INFO L93 Difference]: Finished difference Result 307 states and 443 transitions. [2022-11-02 21:00:50,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:00:50,378 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2022-11-02 21:00:50,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:50,379 INFO L225 Difference]: With dead ends: 307 [2022-11-02 21:00:50,379 INFO L226 Difference]: Without dead ends: 230 [2022-11-02 21:00:50,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 77 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 21:00:50,380 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 272 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 425 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 21:00:50,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 425 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:00:50,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-02 21:00:50,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 101. [2022-11-02 21:00:50,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 1.39) internal successors, (139), 100 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 21:00:50,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 139 transitions. [2022-11-02 21:00:50,386 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 139 transitions. Word has length 80 [2022-11-02 21:00:50,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:50,386 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 139 transitions. [2022-11-02 21:00:50,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 21:00:50,387 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 139 transitions. [2022-11-02 21:00:50,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 21:00:50,387 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:50,388 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] [2022-11-02 21:00:50,405 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-02 21:00:50,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:00:50,601 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:50,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:50,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1066587991, now seen corresponding path program 1 times [2022-11-02 21:00:50,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:00:50,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [55343751] [2022-11-02 21:00:50,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:50,603 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:00:50,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:00:50,604 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:00:50,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-02 21:00:50,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:50,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:00:50,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:50,867 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 21:00:50,867 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:00:50,867 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:00:50,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [55343751] [2022-11-02 21:00:50,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [55343751] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:50,868 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:50,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:00:50,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490063082] [2022-11-02 21:00:50,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:50,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:00:50,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:00:50,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:00:50,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:00:50,870 INFO L87 Difference]: Start difference. First operand 101 states and 139 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 21:00:50,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:50,908 INFO L93 Difference]: Finished difference Result 307 states and 442 transitions. [2022-11-02 21:00:50,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:00:50,909 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2022-11-02 21:00:50,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:50,910 INFO L225 Difference]: With dead ends: 307 [2022-11-02 21:00:50,910 INFO L226 Difference]: Without dead ends: 230 [2022-11-02 21:00:50,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 77 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 21:00:50,911 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 266 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 430 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 21:00:50,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 430 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:00:50,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-02 21:00:50,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 103. [2022-11-02 21:00:50,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 102 states have (on average 1.3823529411764706) internal successors, (141), 102 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 21:00:50,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 141 transitions. [2022-11-02 21:00:50,917 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 141 transitions. Word has length 80 [2022-11-02 21:00:50,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:50,917 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 141 transitions. [2022-11-02 21:00:50,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 21:00:50,917 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 141 transitions. [2022-11-02 21:00:50,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 21:00:50,918 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:50,918 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] [2022-11-02 21:00:50,936 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2022-11-02 21:00:51,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:00:51,131 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:51,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:51,132 INFO L85 PathProgramCache]: Analyzing trace with hash 320197419, now seen corresponding path program 1 times [2022-11-02 21:00:51,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:00:51,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1416444685] [2022-11-02 21:00:51,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:51,132 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:00:51,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:00:51,134 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:00:51,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-02 21:00:51,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:51,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:00:51,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:51,423 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 21:00:51,424 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:00:51,424 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:00:51,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1416444685] [2022-11-02 21:00:51,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1416444685] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:51,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:51,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:00:51,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256983030] [2022-11-02 21:00:51,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:51,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:00:51,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:00:51,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:00:51,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:00:51,427 INFO L87 Difference]: Start difference. First operand 103 states and 141 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 21:00:51,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:51,467 INFO L93 Difference]: Finished difference Result 307 states and 441 transitions. [2022-11-02 21:00:51,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:00:51,468 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2022-11-02 21:00:51,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:51,469 INFO L225 Difference]: With dead ends: 307 [2022-11-02 21:00:51,470 INFO L226 Difference]: Without dead ends: 230 [2022-11-02 21:00:51,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 77 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 21:00:51,471 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 255 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 423 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 21:00:51,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 423 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:00:51,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-02 21:00:51,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 107. [2022-11-02 21:00:51,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 106 states have (on average 1.3773584905660377) internal successors, (146), 106 states have internal predecessors, (146), 0 states have call successors, (0), 0 states 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 21:00:51,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 146 transitions. [2022-11-02 21:00:51,477 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 146 transitions. Word has length 80 [2022-11-02 21:00:51,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:51,479 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 146 transitions. [2022-11-02 21:00:51,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 21:00:51,479 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 146 transitions. [2022-11-02 21:00:51,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 21:00:51,483 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:51,483 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] [2022-11-02 21:00:51,497 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-02 21:00:51,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:00:51,697 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:51,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:51,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1708388691, now seen corresponding path program 1 times [2022-11-02 21:00:51,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:00:51,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [234660784] [2022-11-02 21:00:51,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:51,698 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:00:51,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:00:51,699 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:00:51,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-02 21:00:51,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:51,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 21:00:51,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:52,066 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 21:00:52,067 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:00:52,067 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:00:52,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [234660784] [2022-11-02 21:00:52,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [234660784] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:52,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:52,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:00:52,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869619782] [2022-11-02 21:00:52,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:52,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:00:52,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:00:52,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:00:52,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:00:52,069 INFO L87 Difference]: Start difference. First operand 107 states and 146 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 21:00:52,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:52,156 INFO L93 Difference]: Finished difference Result 307 states and 440 transitions. [2022-11-02 21:00:52,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:00:52,156 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2022-11-02 21:00:52,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:52,157 INFO L225 Difference]: With dead ends: 307 [2022-11-02 21:00:52,157 INFO L226 Difference]: Without dead ends: 230 [2022-11-02 21:00:52,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 77 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 21:00:52,158 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 249 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:52,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 395 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:00:52,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-02 21:00:52,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 109. [2022-11-02 21:00:52,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 1.3703703703703705) internal successors, (148), 108 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 21:00:52,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 148 transitions. [2022-11-02 21:00:52,164 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 148 transitions. Word has length 80 [2022-11-02 21:00:52,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:52,164 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 148 transitions. [2022-11-02 21:00:52,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 21:00:52,165 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 148 transitions. [2022-11-02 21:00:52,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 21:00:52,166 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:52,166 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] [2022-11-02 21:00:52,178 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-02 21:00:52,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:00:52,366 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:52,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:52,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1723907409, now seen corresponding path program 1 times [2022-11-02 21:00:52,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:00:52,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1333718559] [2022-11-02 21:00:52,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:52,367 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:00:52,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:00:52,368 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:00:52,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-02 21:00:52,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:52,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 21:00:52,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:52,689 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 21:00:52,690 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:00:52,690 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:00:52,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1333718559] [2022-11-02 21:00:52,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1333718559] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:52,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:52,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:00:52,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578697566] [2022-11-02 21:00:52,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:52,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:00:52,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:00:52,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:00:52,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:00:52,692 INFO L87 Difference]: Start difference. First operand 109 states and 148 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 21:00:52,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:52,791 INFO L93 Difference]: Finished difference Result 312 states and 444 transitions. [2022-11-02 21:00:52,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:00:52,792 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2022-11-02 21:00:52,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:52,794 INFO L225 Difference]: With dead ends: 312 [2022-11-02 21:00:52,794 INFO L226 Difference]: Without dead ends: 235 [2022-11-02 21:00:52,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:00:52,796 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 349 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 595 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:52,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [349 Valid, 595 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:00:52,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2022-11-02 21:00:52,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 111. [2022-11-02 21:00:52,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 110 states have (on average 1.3636363636363635) internal successors, (150), 110 states have internal predecessors, (150), 0 states have call successors, (0), 0 states 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 21:00:52,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 150 transitions. [2022-11-02 21:00:52,802 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 150 transitions. Word has length 80 [2022-11-02 21:00:52,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:52,802 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 150 transitions. [2022-11-02 21:00:52,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 21:00:52,802 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 150 transitions. [2022-11-02 21:00:52,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 21:00:52,803 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:52,803 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] [2022-11-02 21:00:52,822 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-02 21:00:53,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:00:53,022 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:53,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:53,023 INFO L85 PathProgramCache]: Analyzing trace with hash -2076995791, now seen corresponding path program 1 times [2022-11-02 21:00:53,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:00:53,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [960021952] [2022-11-02 21:00:53,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:53,023 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:00:53,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:00:53,024 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:00:53,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-02 21:00:53,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:53,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:00:53,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:53,289 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 21:00:53,290 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:00:53,290 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:00:53,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [960021952] [2022-11-02 21:00:53,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [960021952] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:53,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:53,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:00:53,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473394656] [2022-11-02 21:00:53,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:53,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:00:53,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:00:53,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:00:53,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:00:53,292 INFO L87 Difference]: Start difference. First operand 111 states and 150 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 21:00:53,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:53,348 INFO L93 Difference]: Finished difference Result 307 states and 438 transitions. [2022-11-02 21:00:53,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:00:53,349 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2022-11-02 21:00:53,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:53,350 INFO L225 Difference]: With dead ends: 307 [2022-11-02 21:00:53,350 INFO L226 Difference]: Without dead ends: 230 [2022-11-02 21:00:53,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 77 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 21:00:53,351 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 237 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 408 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 21:00:53,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 408 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:00:53,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-02 21:00:53,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 113. [2022-11-02 21:00:53,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 1.3571428571428572) internal successors, (152), 112 states have internal predecessors, (152), 0 states have call successors, (0), 0 states 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 21:00:53,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 152 transitions. [2022-11-02 21:00:53,357 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 152 transitions. Word has length 80 [2022-11-02 21:00:53,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:53,357 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 152 transitions. [2022-11-02 21:00:53,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 21:00:53,358 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 152 transitions. [2022-11-02 21:00:53,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 21:00:53,358 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:53,358 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] [2022-11-02 21:00:53,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-02 21:00:53,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:00:53,572 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:53,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:53,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1183509453, now seen corresponding path program 1 times [2022-11-02 21:00:53,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:00:53,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [576883858] [2022-11-02 21:00:53,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:53,573 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:00:53,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:00:53,573 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:00:53,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-02 21:00:53,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:53,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 21:00:53,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:53,881 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 21:00:53,881 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:00:53,881 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:00:53,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [576883858] [2022-11-02 21:00:53,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [576883858] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:53,882 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:53,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:00:53,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756162419] [2022-11-02 21:00:53,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:53,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:00:53,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:00:53,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:00:53,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:00:53,884 INFO L87 Difference]: Start difference. First operand 113 states and 152 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 21:00:53,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:53,973 INFO L93 Difference]: Finished difference Result 312 states and 442 transitions. [2022-11-02 21:00:53,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:00:53,974 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2022-11-02 21:00:53,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:53,975 INFO L225 Difference]: With dead ends: 312 [2022-11-02 21:00:53,975 INFO L226 Difference]: Without dead ends: 235 [2022-11-02 21:00:53,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 76 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 21:00:53,976 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 335 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 587 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:53,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [335 Valid, 587 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:00:53,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2022-11-02 21:00:53,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 115. [2022-11-02 21:00:53,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 114 states have (on average 1.3508771929824561) internal successors, (154), 114 states have internal predecessors, (154), 0 states have call successors, (0), 0 states 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 21:00:53,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 154 transitions. [2022-11-02 21:00:53,981 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 154 transitions. Word has length 80 [2022-11-02 21:00:53,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:53,981 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 154 transitions. [2022-11-02 21:00:53,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 21:00:53,981 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 154 transitions. [2022-11-02 21:00:53,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 21:00:53,982 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:53,982 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] [2022-11-02 21:00:54,010 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-02 21:00:54,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:00:54,196 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:54,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:54,196 INFO L85 PathProgramCache]: Analyzing trace with hash -2080902731, now seen corresponding path program 1 times [2022-11-02 21:00:54,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:00:54,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1493535154] [2022-11-02 21:00:54,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:54,197 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:00:54,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:00:54,197 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:00:54,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-02 21:00:54,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:54,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:00:54,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:54,503 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 21:00:54,503 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:00:54,503 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:00:54,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1493535154] [2022-11-02 21:00:54,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1493535154] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:54,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:54,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:00:54,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408553044] [2022-11-02 21:00:54,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:54,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:00:54,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:00:54,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:00:54,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:00:54,505 INFO L87 Difference]: Start difference. First operand 115 states and 154 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 21:00:54,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:54,566 INFO L93 Difference]: Finished difference Result 307 states and 436 transitions. [2022-11-02 21:00:54,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:00:54,567 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2022-11-02 21:00:54,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:54,568 INFO L225 Difference]: With dead ends: 307 [2022-11-02 21:00:54,568 INFO L226 Difference]: Without dead ends: 230 [2022-11-02 21:00:54,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 77 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 21:00:54,569 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 220 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 406 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 21:00:54,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 406 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:00:54,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-02 21:00:54,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 119. [2022-11-02 21:00:54,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 1.347457627118644) internal successors, (159), 118 states have internal predecessors, (159), 0 states have call successors, (0), 0 states 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 21:00:54,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 159 transitions. [2022-11-02 21:00:54,579 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 159 transitions. Word has length 80 [2022-11-02 21:00:54,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:54,579 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 159 transitions. [2022-11-02 21:00:54,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 21:00:54,580 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 159 transitions. [2022-11-02 21:00:54,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 21:00:54,581 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:54,581 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] [2022-11-02 21:00:54,599 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-02 21:00:54,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:00:54,800 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:54,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:54,800 INFO L85 PathProgramCache]: Analyzing trace with hash 368697399, now seen corresponding path program 1 times [2022-11-02 21:00:54,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:00:54,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1797801048] [2022-11-02 21:00:54,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:54,801 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:00:54,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:00:54,801 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:00:54,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-02 21:00:55,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:55,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:00:55,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:55,090 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 21:00:55,090 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:00:55,090 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:00:55,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1797801048] [2022-11-02 21:00:55,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1797801048] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:55,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:55,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:00:55,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295344179] [2022-11-02 21:00:55,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:55,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:00:55,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:00:55,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:00:55,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:00:55,093 INFO L87 Difference]: Start difference. First operand 119 states and 159 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 21:00:55,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:55,135 INFO L93 Difference]: Finished difference Result 307 states and 435 transitions. [2022-11-02 21:00:55,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:00:55,136 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2022-11-02 21:00:55,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:55,137 INFO L225 Difference]: With dead ends: 307 [2022-11-02 21:00:55,137 INFO L226 Difference]: Without dead ends: 230 [2022-11-02 21:00:55,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 77 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 21:00:55,138 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 214 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 417 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 21:00:55,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 417 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:00:55,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-02 21:00:55,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 121. [2022-11-02 21:00:55,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 120 states have (on average 1.3416666666666666) internal successors, (161), 120 states have internal predecessors, (161), 0 states have call successors, (0), 0 states 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 21:00:55,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 161 transitions. [2022-11-02 21:00:55,143 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 161 transitions. Word has length 80 [2022-11-02 21:00:55,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:55,144 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 161 transitions. [2022-11-02 21:00:55,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 21:00:55,144 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 161 transitions. [2022-11-02 21:00:55,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 21:00:55,145 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:55,145 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] [2022-11-02 21:00:55,159 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-02 21:00:55,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:00:55,359 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:55,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:55,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1028228921, now seen corresponding path program 1 times [2022-11-02 21:00:55,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:00:55,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1536013343] [2022-11-02 21:00:55,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:55,360 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:00:55,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:00:55,361 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:00:55,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-02 21:00:55,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:55,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:00:55,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:55,652 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 21:00:55,653 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:00:55,653 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:00:55,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1536013343] [2022-11-02 21:00:55,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1536013343] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:55,653 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:55,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:00:55,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296183538] [2022-11-02 21:00:55,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:55,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:00:55,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:00:55,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:00:55,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:00:55,655 INFO L87 Difference]: Start difference. First operand 121 states and 161 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 21:00:55,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:55,685 INFO L93 Difference]: Finished difference Result 307 states and 434 transitions. [2022-11-02 21:00:55,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:00:55,686 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2022-11-02 21:00:55,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:55,687 INFO L225 Difference]: With dead ends: 307 [2022-11-02 21:00:55,687 INFO L226 Difference]: Without dead ends: 230 [2022-11-02 21:00:55,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 77 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 21:00:55,688 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 208 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 425 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 21:00:55,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 425 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:00:55,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-02 21:00:55,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 123. [2022-11-02 21:00:55,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 122 states have (on average 1.3360655737704918) internal successors, (163), 122 states have internal predecessors, (163), 0 states have call successors, (0), 0 states 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 21:00:55,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 163 transitions. [2022-11-02 21:00:55,694 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 163 transitions. Word has length 80 [2022-11-02 21:00:55,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:55,694 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 163 transitions. [2022-11-02 21:00:55,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 21:00:55,694 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 163 transitions. [2022-11-02 21:00:55,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 21:00:55,695 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:55,695 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] [2022-11-02 21:00:55,710 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-02 21:00:55,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:00:55,906 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:55,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:55,907 INFO L85 PathProgramCache]: Analyzing trace with hash 184223419, now seen corresponding path program 1 times [2022-11-02 21:00:55,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:00:55,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [351602990] [2022-11-02 21:00:55,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:55,907 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:00:55,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:00:55,908 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:00:55,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-02 21:00:56,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:56,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:00:56,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:56,219 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 21:00:56,219 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:00:56,219 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:00:56,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [351602990] [2022-11-02 21:00:56,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [351602990] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:56,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:56,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:00:56,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89720446] [2022-11-02 21:00:56,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:56,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:00:56,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:00:56,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:00:56,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:00:56,221 INFO L87 Difference]: Start difference. First operand 123 states and 163 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 21:00:56,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:56,251 INFO L93 Difference]: Finished difference Result 307 states and 433 transitions. [2022-11-02 21:00:56,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:00:56,252 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2022-11-02 21:00:56,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:56,253 INFO L225 Difference]: With dead ends: 307 [2022-11-02 21:00:56,253 INFO L226 Difference]: Without dead ends: 230 [2022-11-02 21:00:56,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 77 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 21:00:56,254 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 202 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 424 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 21:00:56,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 424 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:00:56,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-02 21:00:56,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 125. [2022-11-02 21:00:56,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 124 states have (on average 1.3306451612903225) internal successors, (165), 124 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 21:00:56,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 165 transitions. [2022-11-02 21:00:56,264 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 165 transitions. Word has length 80 [2022-11-02 21:00:56,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:56,264 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 165 transitions. [2022-11-02 21:00:56,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 21:00:56,265 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 165 transitions. [2022-11-02 21:00:56,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 21:00:56,265 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:56,265 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] [2022-11-02 21:00:56,285 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-02 21:00:56,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:00:56,466 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:56,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:56,467 INFO L85 PathProgramCache]: Analyzing trace with hash 111836861, now seen corresponding path program 1 times [2022-11-02 21:00:56,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:00:56,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1624050412] [2022-11-02 21:00:56,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:56,467 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:00:56,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:00:56,468 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:00:56,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-02 21:00:56,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:56,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:00:56,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:56,765 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 21:00:56,765 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:00:56,766 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:00:56,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1624050412] [2022-11-02 21:00:56,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1624050412] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:56,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:56,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:00:56,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375693339] [2022-11-02 21:00:56,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:56,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:00:56,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:00:56,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:00:56,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:00:56,768 INFO L87 Difference]: Start difference. First operand 125 states and 165 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 21:00:56,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:56,801 INFO L93 Difference]: Finished difference Result 307 states and 432 transitions. [2022-11-02 21:00:56,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:00:56,802 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2022-11-02 21:00:56,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:56,803 INFO L225 Difference]: With dead ends: 307 [2022-11-02 21:00:56,803 INFO L226 Difference]: Without dead ends: 230 [2022-11-02 21:00:56,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 77 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 21:00:56,804 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 191 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 420 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 21:00:56,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 420 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:00:56,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-02 21:00:56,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 129. [2022-11-02 21:00:56,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 128 states have (on average 1.328125) internal successors, (170), 128 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 21:00:56,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 170 transitions. [2022-11-02 21:00:56,810 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 170 transitions. Word has length 80 [2022-11-02 21:00:56,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:56,810 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 170 transitions. [2022-11-02 21:00:56,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 21:00:56,811 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 170 transitions. [2022-11-02 21:00:56,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 21:00:56,811 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:56,812 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] [2022-11-02 21:00:56,826 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-02 21:00:57,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:00:57,026 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:57,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:57,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1498040255, now seen corresponding path program 1 times [2022-11-02 21:00:57,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:00:57,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [815162277] [2022-11-02 21:00:57,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:57,027 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:00:57,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:00:57,028 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:00:57,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-02 21:00:57,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:57,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:00:57,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:57,336 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 21:00:57,336 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:00:57,337 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:00:57,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [815162277] [2022-11-02 21:00:57,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [815162277] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:57,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:57,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:00:57,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351619168] [2022-11-02 21:00:57,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:57,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:00:57,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:00:57,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:00:57,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:00:57,339 INFO L87 Difference]: Start difference. First operand 129 states and 170 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 21:00:57,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:57,367 INFO L93 Difference]: Finished difference Result 307 states and 431 transitions. [2022-11-02 21:00:57,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:00:57,368 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2022-11-02 21:00:57,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:57,369 INFO L225 Difference]: With dead ends: 307 [2022-11-02 21:00:57,369 INFO L226 Difference]: Without dead ends: 230 [2022-11-02 21:00:57,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 77 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 21:00:57,370 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 180 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 422 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 21:00:57,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 422 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:00:57,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-02 21:00:57,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 133. [2022-11-02 21:00:57,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 1.3257575757575757) internal successors, (175), 132 states have internal predecessors, (175), 0 states have call successors, (0), 0 states 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 21:00:57,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 175 transitions. [2022-11-02 21:00:57,376 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 175 transitions. Word has length 80 [2022-11-02 21:00:57,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:57,377 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 175 transitions. [2022-11-02 21:00:57,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 21:00:57,377 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 175 transitions. [2022-11-02 21:00:57,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 21:00:57,378 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:57,378 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] [2022-11-02 21:00:57,391 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-02 21:00:57,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:00:57,591 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:57,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:57,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1638588865, now seen corresponding path program 1 times [2022-11-02 21:00:57,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:00:57,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [458994151] [2022-11-02 21:00:57,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:57,592 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:00:57,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:00:57,593 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:00:57,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-02 21:00:57,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:57,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:00:57,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:57,909 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 21:00:57,910 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:00:57,910 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:00:57,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [458994151] [2022-11-02 21:00:57,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [458994151] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:57,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:57,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:00:57,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371692452] [2022-11-02 21:00:57,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:57,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:00:57,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:00:57,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:00:57,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:00:57,912 INFO L87 Difference]: Start difference. First operand 133 states and 175 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 21:00:57,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:57,943 INFO L93 Difference]: Finished difference Result 307 states and 430 transitions. [2022-11-02 21:00:57,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:00:57,944 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2022-11-02 21:00:57,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:57,945 INFO L225 Difference]: With dead ends: 307 [2022-11-02 21:00:57,945 INFO L226 Difference]: Without dead ends: 230 [2022-11-02 21:00:57,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 77 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 21:00:57,946 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 169 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 418 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 21:00:57,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 418 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:00:57,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-02 21:00:57,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 137. [2022-11-02 21:00:57,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 136 states have (on average 1.3235294117647058) internal successors, (180), 136 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 21:00:57,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 180 transitions. [2022-11-02 21:00:57,952 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 180 transitions. Word has length 80 [2022-11-02 21:00:57,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:57,952 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 180 transitions. [2022-11-02 21:00:57,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 21:00:57,953 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 180 transitions. [2022-11-02 21:00:57,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 21:00:57,953 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:57,954 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] [2022-11-02 21:00:57,967 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (23)] Ended with exit code 0 [2022-11-02 21:00:58,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:00:58,167 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:58,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:58,167 INFO L85 PathProgramCache]: Analyzing trace with hash 2061290691, now seen corresponding path program 1 times [2022-11-02 21:00:58,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:00:58,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [304449486] [2022-11-02 21:00:58,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:58,168 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:00:58,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:00:58,169 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:00:58,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-02 21:00:58,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:58,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:00:58,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:58,494 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 21:00:58,494 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:00:58,495 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:00:58,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [304449486] [2022-11-02 21:00:58,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [304449486] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:58,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:58,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:00:58,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794811208] [2022-11-02 21:00:58,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:58,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:00:58,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:00:58,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:00:58,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:00:58,498 INFO L87 Difference]: Start difference. First operand 137 states and 180 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 21:00:58,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:58,531 INFO L93 Difference]: Finished difference Result 307 states and 429 transitions. [2022-11-02 21:00:58,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:00:58,532 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2022-11-02 21:00:58,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:58,533 INFO L225 Difference]: With dead ends: 307 [2022-11-02 21:00:58,533 INFO L226 Difference]: Without dead ends: 230 [2022-11-02 21:00:58,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 77 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 21:00:58,534 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 163 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 417 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 21:00:58,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 417 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:00:58,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-02 21:00:58,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 139. [2022-11-02 21:00:58,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 138 states have (on average 1.318840579710145) internal successors, (182), 138 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 21:00:58,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 182 transitions. [2022-11-02 21:00:58,540 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 182 transitions. Word has length 80 [2022-11-02 21:00:58,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:58,540 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 182 transitions. [2022-11-02 21:00:58,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 21:00:58,540 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 182 transitions. [2022-11-02 21:00:58,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 21:00:58,541 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:58,541 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] [2022-11-02 21:00:58,556 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-02 21:00:58,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:00:58,754 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:58,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:58,755 INFO L85 PathProgramCache]: Analyzing trace with hash 372346949, now seen corresponding path program 1 times [2022-11-02 21:00:58,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:00:58,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2038439335] [2022-11-02 21:00:58,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:58,755 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:00:58,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:00:58,756 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:00:58,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-02 21:00:58,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:58,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:00:58,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:59,056 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 21:00:59,056 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:00:59,056 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:00:59,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2038439335] [2022-11-02 21:00:59,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2038439335] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:59,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:59,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:00:59,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016574183] [2022-11-02 21:00:59,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:59,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:00:59,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:00:59,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:00:59,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:00:59,059 INFO L87 Difference]: Start difference. First operand 139 states and 182 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 21:00:59,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:59,100 INFO L93 Difference]: Finished difference Result 307 states and 428 transitions. [2022-11-02 21:00:59,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:00:59,101 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2022-11-02 21:00:59,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:59,102 INFO L225 Difference]: With dead ends: 307 [2022-11-02 21:00:59,102 INFO L226 Difference]: Without dead ends: 230 [2022-11-02 21:00:59,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 77 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 21:00:59,104 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 157 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 416 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 21:00:59,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 416 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:00:59,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-02 21:00:59,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 141. [2022-11-02 21:00:59,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 140 states have (on average 1.3142857142857143) internal successors, (184), 140 states have internal predecessors, (184), 0 states have call successors, (0), 0 states 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 21:00:59,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 184 transitions. [2022-11-02 21:00:59,111 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 184 transitions. Word has length 80 [2022-11-02 21:00:59,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:59,111 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 184 transitions. [2022-11-02 21:00:59,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 21:00:59,112 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 184 transitions. [2022-11-02 21:00:59,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 21:00:59,112 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:59,112 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] [2022-11-02 21:00:59,125 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (25)] Ended with exit code 0 [2022-11-02 21:00:59,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:00:59,325 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:59,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:59,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1216000953, now seen corresponding path program 1 times [2022-11-02 21:00:59,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:00:59,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1087822112] [2022-11-02 21:00:59,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:59,326 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:00:59,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:00:59,327 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:00:59,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-02 21:00:59,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:59,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 21:00:59,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:59,782 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 21:00:59,783 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:00:59,783 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:00:59,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1087822112] [2022-11-02 21:00:59,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1087822112] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:59,783 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:59,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:00:59,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566639311] [2022-11-02 21:00:59,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:59,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:00:59,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:00:59,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:00:59,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:00:59,785 INFO L87 Difference]: Start difference. First operand 141 states and 184 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 21:00:59,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:59,878 INFO L93 Difference]: Finished difference Result 307 states and 427 transitions. [2022-11-02 21:00:59,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:00:59,879 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2022-11-02 21:00:59,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:59,880 INFO L225 Difference]: With dead ends: 307 [2022-11-02 21:00:59,880 INFO L226 Difference]: Without dead ends: 230 [2022-11-02 21:00:59,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 77 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 21:00:59,881 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 151 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:59,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 382 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:00:59,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-02 21:00:59,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 143. [2022-11-02 21:00:59,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 1.3098591549295775) internal successors, (186), 142 states have internal predecessors, (186), 0 states have call successors, (0), 0 states 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 21:00:59,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 186 transitions. [2022-11-02 21:00:59,889 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 186 transitions. Word has length 80 [2022-11-02 21:00:59,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:59,890 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 186 transitions. [2022-11-02 21:00:59,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 21:00:59,890 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 186 transitions. [2022-11-02 21:00:59,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 21:00:59,891 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:59,891 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] [2022-11-02 21:00:59,906 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-11-02 21:01:00,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:01:00,104 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:00,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:00,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1799102665, now seen corresponding path program 1 times [2022-11-02 21:01:00,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:00,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1023796643] [2022-11-02 21:01:00,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:00,105 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:00,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:00,106 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:00,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-02 21:01:00,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:00,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 21:01:00,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:00,422 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 21:01:00,423 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:01:00,423 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:00,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1023796643] [2022-11-02 21:01:00,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1023796643] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:00,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:00,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:01:00,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561147846] [2022-11-02 21:01:00,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:00,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:01:00,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:00,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:01:00,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:01:00,425 INFO L87 Difference]: Start difference. First operand 143 states and 186 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 21:01:00,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:00,519 INFO L93 Difference]: Finished difference Result 312 states and 431 transitions. [2022-11-02 21:01:00,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:01:00,520 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2022-11-02 21:01:00,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:00,522 INFO L225 Difference]: With dead ends: 312 [2022-11-02 21:01:00,522 INFO L226 Difference]: Without dead ends: 235 [2022-11-02 21:01:00,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 76 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 21:01:00,523 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 238 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:00,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 531 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:01:00,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2022-11-02 21:01:00,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 145. [2022-11-02 21:01:00,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.3055555555555556) internal successors, (188), 144 states have internal predecessors, (188), 0 states have call successors, (0), 0 states 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 21:01:00,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 188 transitions. [2022-11-02 21:01:00,533 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 188 transitions. Word has length 80 [2022-11-02 21:01:00,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:00,534 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 188 transitions. [2022-11-02 21:01:00,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 21:01:00,534 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 188 transitions. [2022-11-02 21:01:00,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 21:01:00,535 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:00,535 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] [2022-11-02 21:01:00,548 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-11-02 21:01:00,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:01:00,748 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:00,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:00,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1212296651, now seen corresponding path program 1 times [2022-11-02 21:01:00,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:00,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1377886446] [2022-11-02 21:01:00,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:00,749 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:00,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:00,750 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:00,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-02 21:01:00,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:00,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:01:00,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:01,069 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 21:01:01,069 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:01:01,069 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:01,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1377886446] [2022-11-02 21:01:01,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1377886446] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:01,070 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:01,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:01:01,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215366809] [2022-11-02 21:01:01,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:01,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:01:01,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:01,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:01:01,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:01:01,072 INFO L87 Difference]: Start difference. First operand 145 states and 188 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 21:01:01,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:01,124 INFO L93 Difference]: Finished difference Result 307 states and 425 transitions. [2022-11-02 21:01:01,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:01:01,125 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2022-11-02 21:01:01,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:01,126 INFO L225 Difference]: With dead ends: 307 [2022-11-02 21:01:01,127 INFO L226 Difference]: Without dead ends: 230 [2022-11-02 21:01:01,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 77 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 21:01:01,128 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 139 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 395 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 21:01:01,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 395 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:01:01,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-02 21:01:01,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 147. [2022-11-02 21:01:01,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 1.3013698630136987) internal successors, (190), 146 states have internal predecessors, (190), 0 states have call successors, (0), 0 states 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 21:01:01,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 190 transitions. [2022-11-02 21:01:01,140 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 190 transitions. Word has length 80 [2022-11-02 21:01:01,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:01,140 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 190 transitions. [2022-11-02 21:01:01,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 21:01:01,141 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 190 transitions. [2022-11-02 21:01:01,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 21:01:01,144 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:01,144 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] [2022-11-02 21:01:01,161 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-11-02 21:01:01,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:01:01,357 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:01,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:01,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1913361229, now seen corresponding path program 1 times [2022-11-02 21:01:01,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:01,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [658665357] [2022-11-02 21:01:01,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:01,358 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:01,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:01,359 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:01,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-02 21:01:01,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:01,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:01:01,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:01,682 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 21:01:01,683 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:01:01,683 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:01,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [658665357] [2022-11-02 21:01:01,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [658665357] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:01,683 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:01,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:01:01,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641729599] [2022-11-02 21:01:01,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:01,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:01:01,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:01,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:01:01,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:01:01,685 INFO L87 Difference]: Start difference. First operand 147 states and 190 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 21:01:01,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:01,737 INFO L93 Difference]: Finished difference Result 307 states and 424 transitions. [2022-11-02 21:01:01,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:01:01,738 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2022-11-02 21:01:01,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:01,739 INFO L225 Difference]: With dead ends: 307 [2022-11-02 21:01:01,739 INFO L226 Difference]: Without dead ends: 230 [2022-11-02 21:01:01,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 77 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 21:01:01,740 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 128 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 394 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 21:01:01,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 394 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:01:01,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-02 21:01:01,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 151. [2022-11-02 21:01:01,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 150 states have (on average 1.3) internal successors, (195), 150 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 21:01:01,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 195 transitions. [2022-11-02 21:01:01,750 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 195 transitions. Word has length 80 [2022-11-02 21:01:01,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:01,751 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 195 transitions. [2022-11-02 21:01:01,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 21:01:01,751 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 195 transitions. [2022-11-02 21:01:01,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 21:01:01,752 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:01,752 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] [2022-11-02 21:01:01,766 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-11-02 21:01:01,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:01:01,965 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:01,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:01,965 INFO L85 PathProgramCache]: Analyzing trace with hash -606598705, now seen corresponding path program 1 times [2022-11-02 21:01:01,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:01,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [315954848] [2022-11-02 21:01:01,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:01,966 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:01,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:01,968 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:01,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-11-02 21:01:02,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:02,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:01:02,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:02,262 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 21:01:02,262 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:01:02,263 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:02,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [315954848] [2022-11-02 21:01:02,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [315954848] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:02,263 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:02,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:01:02,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997095403] [2022-11-02 21:01:02,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:02,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:01:02,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:02,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:01:02,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:01:02,265 INFO L87 Difference]: Start difference. First operand 151 states and 195 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 21:01:02,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:02,321 INFO L93 Difference]: Finished difference Result 307 states and 423 transitions. [2022-11-02 21:01:02,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:01:02,321 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2022-11-02 21:01:02,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:02,323 INFO L225 Difference]: With dead ends: 307 [2022-11-02 21:01:02,324 INFO L226 Difference]: Without dead ends: 230 [2022-11-02 21:01:02,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 77 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 21:01:02,332 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 122 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 393 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 21:01:02,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 393 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:01:02,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-02 21:01:02,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 153. [2022-11-02 21:01:02,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 152 states have (on average 1.2960526315789473) internal successors, (197), 152 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 21:01:02,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 197 transitions. [2022-11-02 21:01:02,339 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 197 transitions. Word has length 80 [2022-11-02 21:01:02,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:02,342 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 197 transitions. [2022-11-02 21:01:02,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 21:01:02,343 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 197 transitions. [2022-11-02 21:01:02,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 21:01:02,344 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:02,344 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] [2022-11-02 21:01:02,361 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2022-11-02 21:01:02,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:01:02,557 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:02,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:02,557 INFO L85 PathProgramCache]: Analyzing trace with hash -604751663, now seen corresponding path program 1 times [2022-11-02 21:01:02,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:02,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [702221368] [2022-11-02 21:01:02,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:02,561 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:02,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:02,562 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:02,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-11-02 21:01:02,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:02,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-02 21:01:02,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:03,502 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:01:03,502 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:01:04,777 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:01:04,777 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:04,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [702221368] [2022-11-02 21:01:04,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [702221368] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:01:04,778 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:01:04,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-11-02 21:01:04,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425390657] [2022-11-02 21:01:04,778 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:01:04,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 21:01:04,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:04,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 21:01:04,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-11-02 21:01:04,780 INFO L87 Difference]: Start difference. First operand 153 states and 197 transitions. Second operand has 12 states, 12 states have (on average 13.166666666666666) internal successors, (158), 12 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 21:01:05,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:05,149 INFO L93 Difference]: Finished difference Result 299 states and 412 transitions. [2022-11-02 21:01:05,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 21:01:05,150 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 13.166666666666666) internal successors, (158), 12 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) Word has length 80 [2022-11-02 21:01:05,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:05,151 INFO L225 Difference]: With dead ends: 299 [2022-11-02 21:01:05,151 INFO L226 Difference]: Without dead ends: 297 [2022-11-02 21:01:05,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 147 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306 [2022-11-02 21:01:05,152 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 892 mSDsluCounter, 1100 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 892 SdHoareTripleChecker+Valid, 1350 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 118 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:05,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [892 Valid, 1350 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 149 Invalid, 0 Unknown, 118 Unchecked, 0.2s Time] [2022-11-02 21:01:05,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2022-11-02 21:01:05,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 228. [2022-11-02 21:01:05,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 227 states have (on average 1.3568281938325992) internal successors, (308), 227 states have internal predecessors, (308), 0 states have call successors, (0), 0 states 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 21:01:05,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 308 transitions. [2022-11-02 21:01:05,159 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 308 transitions. Word has length 80 [2022-11-02 21:01:05,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:05,160 INFO L495 AbstractCegarLoop]: Abstraction has 228 states and 308 transitions. [2022-11-02 21:01:05,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.166666666666666) internal successors, (158), 12 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 21:01:05,160 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 308 transitions. [2022-11-02 21:01:05,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-11-02 21:01:05,161 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:05,161 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:01:05,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-11-02 21:01:05,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:01:05,374 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:05,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:05,375 INFO L85 PathProgramCache]: Analyzing trace with hash 713098965, now seen corresponding path program 1 times [2022-11-02 21:01:05,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:05,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1237660827] [2022-11-02 21:01:05,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:05,375 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:05,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:05,376 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:05,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-11-02 21:01:05,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:05,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 730 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 21:01:05,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:06,262 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 75 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 21:01:06,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:01:06,596 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 75 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 21:01:06,596 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:06,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1237660827] [2022-11-02 21:01:06,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1237660827] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:01:06,596 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:01:06,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-11-02 21:01:06,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583826327] [2022-11-02 21:01:06,596 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:01:06,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 21:01:06,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:06,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 21:01:06,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-02 21:01:06,598 INFO L87 Difference]: Start difference. First operand 228 states and 308 transitions. Second operand has 11 states, 11 states have (on average 20.90909090909091) internal successors, (230), 11 states have internal predecessors, (230), 0 states have call successors, (0), 0 states 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 21:01:06,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:06,820 INFO L93 Difference]: Finished difference Result 535 states and 758 transitions. [2022-11-02 21:01:06,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 21:01:06,821 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 20.90909090909091) internal successors, (230), 11 states have internal predecessors, (230), 0 states have call successors, (0), 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 155 [2022-11-02 21:01:06,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:06,823 INFO L225 Difference]: With dead ends: 535 [2022-11-02 21:01:06,823 INFO L226 Difference]: Without dead ends: 383 [2022-11-02 21:01:06,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 298 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2022-11-02 21:01:06,828 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 1109 mSDsluCounter, 793 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1109 SdHoareTripleChecker+Valid, 932 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:06,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1109 Valid, 932 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:01:06,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2022-11-02 21:01:06,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 228. [2022-11-02 21:01:06,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 227 states have (on average 1.3524229074889869) internal successors, (307), 227 states have internal predecessors, (307), 0 states have call successors, (0), 0 states 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 21:01:06,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 307 transitions. [2022-11-02 21:01:06,842 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 307 transitions. Word has length 155 [2022-11-02 21:01:06,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:06,843 INFO L495 AbstractCegarLoop]: Abstraction has 228 states and 307 transitions. [2022-11-02 21:01:06,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 20.90909090909091) internal successors, (230), 11 states have internal predecessors, (230), 0 states have call successors, (0), 0 states 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 21:01:06,843 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 307 transitions. [2022-11-02 21:01:06,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-11-02 21:01:06,844 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:06,844 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:01:06,864 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2022-11-02 21:01:07,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:01:07,059 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:07,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:07,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1847763881, now seen corresponding path program 1 times [2022-11-02 21:01:07,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:07,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [662889340] [2022-11-02 21:01:07,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:07,060 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:07,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:07,061 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:07,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-11-02 21:01:07,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:07,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 730 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 21:01:07,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:07,696 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 71 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:07,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:01:07,996 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 78 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:07,997 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:07,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [662889340] [2022-11-02 21:01:07,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [662889340] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:01:07,997 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:01:07,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2022-11-02 21:01:07,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063946154] [2022-11-02 21:01:07,997 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:01:07,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-02 21:01:07,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:07,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-02 21:01:07,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2022-11-02 21:01:07,999 INFO L87 Difference]: Start difference. First operand 228 states and 307 transitions. Second operand has 17 states, 17 states have (on average 12.764705882352942) internal successors, (217), 17 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 21:01:08,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:08,973 INFO L93 Difference]: Finished difference Result 700 states and 1000 transitions. [2022-11-02 21:01:08,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-02 21:01:08,974 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 12.764705882352942) internal successors, (217), 17 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) Word has length 155 [2022-11-02 21:01:08,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:08,976 INFO L225 Difference]: With dead ends: 700 [2022-11-02 21:01:08,976 INFO L226 Difference]: Without dead ends: 623 [2022-11-02 21:01:08,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=285, Invalid=837, Unknown=0, NotChecked=0, Total=1122 [2022-11-02 21:01:08,978 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 1521 mSDsluCounter, 2708 mSDsCounter, 0 mSdLazyCounter, 662 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1521 SdHoareTripleChecker+Valid, 2869 SdHoareTripleChecker+Invalid, 711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:08,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1521 Valid, 2869 Invalid, 711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 662 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 21:01:08,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2022-11-02 21:01:08,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 303. [2022-11-02 21:01:08,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 302 states have (on average 1.3774834437086092) internal successors, (416), 302 states have internal predecessors, (416), 0 states have call successors, (0), 0 states 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 21:01:08,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 416 transitions. [2022-11-02 21:01:08,990 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 416 transitions. Word has length 155 [2022-11-02 21:01:08,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:08,990 INFO L495 AbstractCegarLoop]: Abstraction has 303 states and 416 transitions. [2022-11-02 21:01:08,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 12.764705882352942) internal successors, (217), 17 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 21:01:08,991 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 416 transitions. [2022-11-02 21:01:08,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-11-02 21:01:08,992 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:08,993 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, 2, 2, 2, 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] [2022-11-02 21:01:09,008 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2022-11-02 21:01:09,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:01:09,208 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:09,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:09,208 INFO L85 PathProgramCache]: Analyzing trace with hash 2093743439, now seen corresponding path program 2 times [2022-11-02 21:01:09,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:09,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1887581846] [2022-11-02 21:01:09,210 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 21:01:09,210 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:09,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:09,211 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:09,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-11-02 21:01:09,533 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 21:01:09,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:01:09,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 21:01:09,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:09,830 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 154 proven. 12 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2022-11-02 21:01:09,830 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:01:10,046 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 165 proven. 1 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2022-11-02 21:01:10,046 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:10,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1887581846] [2022-11-02 21:01:10,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1887581846] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:01:10,046 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:01:10,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-11-02 21:01:10,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038899037] [2022-11-02 21:01:10,047 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:01:10,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 21:01:10,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:10,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 21:01:10,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-02 21:01:10,051 INFO L87 Difference]: Start difference. First operand 303 states and 416 transitions. Second operand has 11 states, 11 states have (on average 19.272727272727273) internal successors, (212), 11 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 21:01:10,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:10,353 INFO L93 Difference]: Finished difference Result 1298 states and 1870 transitions. [2022-11-02 21:01:10,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 21:01:10,354 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 19.272727272727273) internal successors, (212), 11 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) Word has length 230 [2022-11-02 21:01:10,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:10,359 INFO L225 Difference]: With dead ends: 1298 [2022-11-02 21:01:10,359 INFO L226 Difference]: Without dead ends: 1071 [2022-11-02 21:01:10,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 464 GetRequests, 449 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 21:01:10,361 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 1020 mSDsluCounter, 1007 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1020 SdHoareTripleChecker+Valid, 1167 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:10,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1020 Valid, 1167 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:01:10,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1071 states. [2022-11-02 21:01:10,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1071 to 528. [2022-11-02 21:01:10,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 527 states have (on average 1.411764705882353) internal successors, (744), 527 states have internal predecessors, (744), 0 states have call successors, (0), 0 states 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 21:01:10,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 744 transitions. [2022-11-02 21:01:10,380 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 744 transitions. Word has length 230 [2022-11-02 21:01:10,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:10,381 INFO L495 AbstractCegarLoop]: Abstraction has 528 states and 744 transitions. [2022-11-02 21:01:10,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 19.272727272727273) internal successors, (212), 11 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 21:01:10,381 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 744 transitions. [2022-11-02 21:01:10,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-11-02 21:01:10,383 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:10,383 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, 2, 2, 2, 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] [2022-11-02 21:01:10,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2022-11-02 21:01:10,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:01:10,599 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:10,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:10,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1553313933, now seen corresponding path program 3 times [2022-11-02 21:01:10,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:10,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [384479180] [2022-11-02 21:01:10,600 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 21:01:10,601 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:10,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:10,602 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:10,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-11-02 21:01:10,866 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-02 21:01:10,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:01:10,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 21:01:10,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:10,907 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-11-02 21:01:10,907 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:01:10,908 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:10,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [384479180] [2022-11-02 21:01:10,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [384479180] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:10,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:10,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:01:10,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359621566] [2022-11-02 21:01:10,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:10,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:01:10,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:10,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:01:10,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:01:10,911 INFO L87 Difference]: Start difference. First operand 528 states and 744 transitions. Second operand has 5 states, 5 states have (on average 35.2) internal successors, (176), 5 states have internal predecessors, (176), 0 states have call successors, (0), 0 states 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 21:01:11,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:11,014 INFO L93 Difference]: Finished difference Result 1614 states and 2314 transitions. [2022-11-02 21:01:11,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:01:11,015 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.2) internal successors, (176), 5 states have internal predecessors, (176), 0 states have call successors, (0), 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 230 [2022-11-02 21:01:11,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:11,019 INFO L225 Difference]: With dead ends: 1614 [2022-11-02 21:01:11,019 INFO L226 Difference]: Without dead ends: 1094 [2022-11-02 21:01:11,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 228 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 21:01:11,022 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 623 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 623 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:11,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [623 Valid, 333 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:01:11,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1094 states. [2022-11-02 21:01:11,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1094 to 536. [2022-11-02 21:01:11,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 535 states have (on average 1.4037383177570093) internal successors, (751), 535 states have internal predecessors, (751), 0 states have call successors, (0), 0 states 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 21:01:11,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 751 transitions. [2022-11-02 21:01:11,040 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 751 transitions. Word has length 230 [2022-11-02 21:01:11,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:11,040 INFO L495 AbstractCegarLoop]: Abstraction has 536 states and 751 transitions. [2022-11-02 21:01:11,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.2) internal successors, (176), 5 states have internal predecessors, (176), 0 states have call successors, (0), 0 states 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 21:01:11,041 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 751 transitions. [2022-11-02 21:01:11,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-11-02 21:01:11,042 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:11,043 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, 2, 2, 2, 2, 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 21:01:11,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2022-11-02 21:01:11,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:01:11,254 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:11,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:11,255 INFO L85 PathProgramCache]: Analyzing trace with hash -830610805, now seen corresponding path program 1 times [2022-11-02 21:01:11,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:11,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1006449856] [2022-11-02 21:01:11,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:11,256 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:11,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:11,257 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:11,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2022-11-02 21:01:11,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:11,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-02 21:01:11,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:11,857 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 154 proven. 16 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-11-02 21:01:11,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:01:12,189 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 154 proven. 16 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-11-02 21:01:12,190 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:12,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1006449856] [2022-11-02 21:01:12,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1006449856] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:01:12,190 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:01:12,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2022-11-02 21:01:12,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499162222] [2022-11-02 21:01:12,190 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:01:12,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 21:01:12,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:12,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 21:01:12,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2022-11-02 21:01:12,192 INFO L87 Difference]: Start difference. First operand 536 states and 751 transitions. Second operand has 19 states, 19 states have (on average 9.894736842105264) internal successors, (188), 19 states have internal predecessors, (188), 0 states have call successors, (0), 0 states 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 21:01:13,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:13,393 INFO L93 Difference]: Finished difference Result 3837 states and 5541 transitions. [2022-11-02 21:01:13,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-02 21:01:13,394 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 9.894736842105264) internal successors, (188), 19 states have internal predecessors, (188), 0 states have call successors, (0), 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 230 [2022-11-02 21:01:13,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:13,405 INFO L225 Difference]: With dead ends: 3837 [2022-11-02 21:01:13,405 INFO L226 Difference]: Without dead ends: 3377 [2022-11-02 21:01:13,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 441 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 525 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=578, Invalid=1972, Unknown=0, NotChecked=0, Total=2550 [2022-11-02 21:01:13,408 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 4073 mSDsluCounter, 1307 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4073 SdHoareTripleChecker+Valid, 1411 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:13,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4073 Valid, 1411 Invalid, 529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 21:01:13,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3377 states. [2022-11-02 21:01:13,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3377 to 1090. [2022-11-02 21:01:13,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1090 states, 1089 states have (on average 1.401285583103765) internal successors, (1526), 1089 states have internal predecessors, (1526), 0 states have call successors, (0), 0 states 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 21:01:13,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1090 states to 1090 states and 1526 transitions. [2022-11-02 21:01:13,461 INFO L78 Accepts]: Start accepts. Automaton has 1090 states and 1526 transitions. Word has length 230 [2022-11-02 21:01:13,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:13,461 INFO L495 AbstractCegarLoop]: Abstraction has 1090 states and 1526 transitions. [2022-11-02 21:01:13,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 9.894736842105264) internal successors, (188), 19 states have internal predecessors, (188), 0 states have call successors, (0), 0 states 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 21:01:13,461 INFO L276 IsEmpty]: Start isEmpty. Operand 1090 states and 1526 transitions. [2022-11-02 21:01:13,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-11-02 21:01:13,464 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:13,464 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, 2, 2, 2, 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] [2022-11-02 21:01:13,487 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2022-11-02 21:01:13,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:01:13,678 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:13,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:13,679 INFO L85 PathProgramCache]: Analyzing trace with hash 911076683, now seen corresponding path program 1 times [2022-11-02 21:01:13,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:13,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1570726616] [2022-11-02 21:01:13,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:13,679 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:13,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:13,680 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:13,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2022-11-02 21:01:14,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:14,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 21:01:14,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:14,416 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 154 proven. 18 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-11-02 21:01:14,416 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:01:14,675 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 171 proven. 1 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-11-02 21:01:14,675 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:14,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1570726616] [2022-11-02 21:01:14,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1570726616] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:01:14,675 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:01:14,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-11-02 21:01:14,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541176456] [2022-11-02 21:01:14,676 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:01:14,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 21:01:14,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:14,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 21:01:14,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-02 21:01:14,677 INFO L87 Difference]: Start difference. First operand 1090 states and 1526 transitions. Second operand has 11 states, 11 states have (on average 21.454545454545453) internal successors, (236), 11 states have internal predecessors, (236), 0 states have call successors, (0), 0 states 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 21:01:15,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:15,114 INFO L93 Difference]: Finished difference Result 5398 states and 7754 transitions. [2022-11-02 21:01:15,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 21:01:15,115 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 21.454545454545453) internal successors, (236), 11 states have internal predecessors, (236), 0 states have call successors, (0), 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 230 [2022-11-02 21:01:15,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:15,130 INFO L225 Difference]: With dead ends: 5398 [2022-11-02 21:01:15,130 INFO L226 Difference]: Without dead ends: 4444 [2022-11-02 21:01:15,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 464 GetRequests, 449 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2022-11-02 21:01:15,134 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 925 mSDsluCounter, 1192 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 925 SdHoareTripleChecker+Valid, 1363 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:15,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [925 Valid, 1363 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:01:15,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4444 states. [2022-11-02 21:01:15,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4444 to 2042. [2022-11-02 21:01:15,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2042 states, 2041 states have (on average 1.4159725624693777) internal successors, (2890), 2041 states have internal predecessors, (2890), 0 states have call successors, (0), 0 states 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 21:01:15,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2042 states to 2042 states and 2890 transitions. [2022-11-02 21:01:15,222 INFO L78 Accepts]: Start accepts. Automaton has 2042 states and 2890 transitions. Word has length 230 [2022-11-02 21:01:15,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:15,222 INFO L495 AbstractCegarLoop]: Abstraction has 2042 states and 2890 transitions. [2022-11-02 21:01:15,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 21.454545454545453) internal successors, (236), 11 states have internal predecessors, (236), 0 states have call successors, (0), 0 states 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 21:01:15,223 INFO L276 IsEmpty]: Start isEmpty. Operand 2042 states and 2890 transitions. [2022-11-02 21:01:15,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-11-02 21:01:15,227 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:15,228 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, 2, 2, 2, 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] [2022-11-02 21:01:15,250 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2022-11-02 21:01:15,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:01:15,442 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:15,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:15,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1328965385, now seen corresponding path program 2 times [2022-11-02 21:01:15,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:15,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [620964295] [2022-11-02 21:01:15,444 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 21:01:15,444 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:15,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:15,445 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:15,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2022-11-02 21:01:15,838 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 21:01:15,838 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:01:15,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-02 21:01:15,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:16,499 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 154 proven. 20 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-11-02 21:01:16,500 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:01:16,950 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 154 proven. 20 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-11-02 21:01:16,951 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:16,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [620964295] [2022-11-02 21:01:16,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [620964295] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:01:16,951 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:01:16,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2022-11-02 21:01:16,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918904000] [2022-11-02 21:01:16,951 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:01:16,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-02 21:01:16,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:16,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-02 21:01:16,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2022-11-02 21:01:16,954 INFO L87 Difference]: Start difference. First operand 2042 states and 2890 transitions. Second operand has 24 states, 24 states have (on average 11.25) internal successors, (270), 24 states have internal predecessors, (270), 0 states have call successors, (0), 0 states 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 21:01:19,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:19,263 INFO L93 Difference]: Finished difference Result 14458 states and 20654 transitions. [2022-11-02 21:01:19,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-02 21:01:19,264 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 11.25) internal successors, (270), 24 states have internal predecessors, (270), 0 states have call successors, (0), 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 230 [2022-11-02 21:01:19,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:19,292 INFO L225 Difference]: With dead ends: 14458 [2022-11-02 21:01:19,292 INFO L226 Difference]: Without dead ends: 12552 [2022-11-02 21:01:19,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 495 GetRequests, 436 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 792 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=829, Invalid=2831, Unknown=0, NotChecked=0, Total=3660 [2022-11-02 21:01:19,297 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 2562 mSDsluCounter, 3927 mSDsCounter, 0 mSdLazyCounter, 970 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2562 SdHoareTripleChecker+Valid, 4077 SdHoareTripleChecker+Invalid, 1066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:19,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2562 Valid, 4077 Invalid, 1066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 970 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-02 21:01:19,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12552 states. [2022-11-02 21:01:19,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12552 to 3994. [2022-11-02 21:01:19,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3994 states, 3993 states have (on average 1.4189832206361133) internal successors, (5666), 3993 states have internal predecessors, (5666), 0 states have call successors, (0), 0 states 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 21:01:19,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3994 states to 3994 states and 5666 transitions. [2022-11-02 21:01:19,508 INFO L78 Accepts]: Start accepts. Automaton has 3994 states and 5666 transitions. Word has length 230 [2022-11-02 21:01:19,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:19,509 INFO L495 AbstractCegarLoop]: Abstraction has 3994 states and 5666 transitions. [2022-11-02 21:01:19,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 11.25) internal successors, (270), 24 states have internal predecessors, (270), 0 states have call successors, (0), 0 states 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 21:01:19,509 INFO L276 IsEmpty]: Start isEmpty. Operand 3994 states and 5666 transitions. [2022-11-02 21:01:19,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-11-02 21:01:19,516 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:19,516 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, 2, 2, 2, 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] [2022-11-02 21:01:19,533 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2022-11-02 21:01:19,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:01:19,729 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:19,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:19,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1348561461, now seen corresponding path program 3 times [2022-11-02 21:01:19,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:19,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1560370072] [2022-11-02 21:01:19,731 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 21:01:19,731 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:19,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:19,733 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:19,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2022-11-02 21:01:19,997 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-02 21:01:19,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:01:20,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 21:01:20,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:20,358 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 108 proven. 6 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2022-11-02 21:01:20,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:01:20,654 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 104 proven. 10 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2022-11-02 21:01:20,655 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:20,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1560370072] [2022-11-02 21:01:20,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1560370072] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:01:20,655 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:01:20,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-11-02 21:01:20,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611600565] [2022-11-02 21:01:20,655 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:01:20,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 21:01:20,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:20,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 21:01:20,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:01:20,657 INFO L87 Difference]: Start difference. First operand 3994 states and 5666 transitions. Second operand has 9 states, 9 states have (on average 18.333333333333332) internal successors, (165), 9 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 21:01:21,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:21,057 INFO L93 Difference]: Finished difference Result 13880 states and 19727 transitions. [2022-11-02 21:01:21,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 21:01:21,058 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 18.333333333333332) internal successors, (165), 9 states have internal predecessors, (165), 0 states have call successors, (0), 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 230 [2022-11-02 21:01:21,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:21,075 INFO L225 Difference]: With dead ends: 13880 [2022-11-02 21:01:21,075 INFO L226 Difference]: Without dead ends: 10022 [2022-11-02 21:01:21,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 450 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2022-11-02 21:01:21,081 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 434 mSDsluCounter, 839 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 1076 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:21,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [434 Valid, 1076 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:01:21,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10022 states. [2022-11-02 21:01:21,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10022 to 4090. [2022-11-02 21:01:21,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4090 states, 4089 states have (on average 1.4150158963071655) internal successors, (5786), 4089 states have internal predecessors, (5786), 0 states have call successors, (0), 0 states 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 21:01:21,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4090 states to 4090 states and 5786 transitions. [2022-11-02 21:01:21,324 INFO L78 Accepts]: Start accepts. Automaton has 4090 states and 5786 transitions. Word has length 230 [2022-11-02 21:01:21,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:21,324 INFO L495 AbstractCegarLoop]: Abstraction has 4090 states and 5786 transitions. [2022-11-02 21:01:21,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.333333333333332) internal successors, (165), 9 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 21:01:21,325 INFO L276 IsEmpty]: Start isEmpty. Operand 4090 states and 5786 transitions. [2022-11-02 21:01:21,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-11-02 21:01:21,338 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:21,338 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, 2, 2, 2, 2, 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 21:01:21,357 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2022-11-02 21:01:21,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:01:21,552 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:21,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:21,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1489432437, now seen corresponding path program 1 times [2022-11-02 21:01:21,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:21,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [860400926] [2022-11-02 21:01:21,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:21,554 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:21,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:21,555 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:21,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2022-11-02 21:01:21,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:21,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-02 21:01:21,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:22,253 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 154 proven. 22 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-02 21:01:22,253 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:01:22,603 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 154 proven. 22 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-02 21:01:22,603 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:22,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [860400926] [2022-11-02 21:01:22,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [860400926] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:01:22,603 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:01:22,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2022-11-02 21:01:22,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823176283] [2022-11-02 21:01:22,604 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:01:22,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 21:01:22,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:22,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 21:01:22,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2022-11-02 21:01:22,606 INFO L87 Difference]: Start difference. First operand 4090 states and 5786 transitions. Second operand has 19 states, 19 states have (on average 10.526315789473685) internal successors, (200), 19 states have internal predecessors, (200), 0 states have call successors, (0), 0 states 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 21:01:24,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:24,174 INFO L93 Difference]: Finished difference Result 12182 states and 17392 transitions. [2022-11-02 21:01:24,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-02 21:01:24,174 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 10.526315789473685) internal successors, (200), 19 states have internal predecessors, (200), 0 states have call successors, (0), 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 230 [2022-11-02 21:01:24,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:24,189 INFO L225 Difference]: With dead ends: 12182 [2022-11-02 21:01:24,190 INFO L226 Difference]: Without dead ends: 8228 [2022-11-02 21:01:24,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 441 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 443 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=529, Invalid=1823, Unknown=0, NotChecked=0, Total=2352 [2022-11-02 21:01:24,195 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 2187 mSDsluCounter, 2499 mSDsCounter, 0 mSdLazyCounter, 720 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2187 SdHoareTripleChecker+Valid, 2612 SdHoareTripleChecker+Invalid, 785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:24,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2187 Valid, 2612 Invalid, 785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 720 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-02 21:01:24,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8228 states. [2022-11-02 21:01:24,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8228 to 3138. [2022-11-02 21:01:24,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3138 states, 3137 states have (on average 1.4019764105833599) internal successors, (4398), 3137 states have internal predecessors, (4398), 0 states have call successors, (0), 0 states 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 21:01:24,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3138 states to 3138 states and 4398 transitions. [2022-11-02 21:01:24,335 INFO L78 Accepts]: Start accepts. Automaton has 3138 states and 4398 transitions. Word has length 230 [2022-11-02 21:01:24,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:24,336 INFO L495 AbstractCegarLoop]: Abstraction has 3138 states and 4398 transitions. [2022-11-02 21:01:24,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 10.526315789473685) internal successors, (200), 19 states have internal predecessors, (200), 0 states have call successors, (0), 0 states 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 21:01:24,336 INFO L276 IsEmpty]: Start isEmpty. Operand 3138 states and 4398 transitions. [2022-11-02 21:01:24,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-11-02 21:01:24,343 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:24,343 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, 2, 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] [2022-11-02 21:01:24,363 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (40)] Ended with exit code 0 [2022-11-02 21:01:24,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:01:24,562 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:24,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:24,563 INFO L85 PathProgramCache]: Analyzing trace with hash -359524599, now seen corresponding path program 1 times [2022-11-02 21:01:24,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:24,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [328099015] [2022-11-02 21:01:24,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:24,564 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:24,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:24,566 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:24,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2022-11-02 21:01:24,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:24,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 21:01:24,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:25,304 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 154 proven. 24 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-11-02 21:01:25,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:01:25,536 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 177 proven. 1 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-11-02 21:01:25,536 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:25,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [328099015] [2022-11-02 21:01:25,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [328099015] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:01:25,537 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:01:25,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-11-02 21:01:25,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311637601] [2022-11-02 21:01:25,537 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:01:25,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 21:01:25,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:25,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 21:01:25,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-02 21:01:25,539 INFO L87 Difference]: Start difference. First operand 3138 states and 4398 transitions. Second operand has 11 states, 11 states have (on average 22.0) internal successors, (242), 11 states have internal predecessors, (242), 0 states have call successors, (0), 0 states 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 21:01:26,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:26,002 INFO L93 Difference]: Finished difference Result 10502 states and 14878 transitions. [2022-11-02 21:01:26,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 21:01:26,003 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 22.0) internal successors, (242), 11 states have internal predecessors, (242), 0 states have call successors, (0), 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 230 [2022-11-02 21:01:26,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:26,016 INFO L225 Difference]: With dead ends: 10502 [2022-11-02 21:01:26,016 INFO L226 Difference]: Without dead ends: 7500 [2022-11-02 21:01:26,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 464 GetRequests, 449 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2022-11-02 21:01:26,021 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 957 mSDsluCounter, 821 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 957 SdHoareTripleChecker+Valid, 994 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:26,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [957 Valid, 994 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:01:26,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7500 states. [2022-11-02 21:01:26,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7500 to 3138. [2022-11-02 21:01:26,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3138 states, 3137 states have (on average 1.398151099776857) internal successors, (4386), 3137 states have internal predecessors, (4386), 0 states have call successors, (0), 0 states 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 21:01:26,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3138 states to 3138 states and 4386 transitions. [2022-11-02 21:01:26,152 INFO L78 Accepts]: Start accepts. Automaton has 3138 states and 4386 transitions. Word has length 230 [2022-11-02 21:01:26,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:26,153 INFO L495 AbstractCegarLoop]: Abstraction has 3138 states and 4386 transitions. [2022-11-02 21:01:26,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.0) internal successors, (242), 11 states have internal predecessors, (242), 0 states have call successors, (0), 0 states 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 21:01:26,154 INFO L276 IsEmpty]: Start isEmpty. Operand 3138 states and 4386 transitions. [2022-11-02 21:01:26,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-11-02 21:01:26,159 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:26,160 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, 2, 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] [2022-11-02 21:01:26,178 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2022-11-02 21:01:26,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:01:26,374 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:26,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:26,375 INFO L85 PathProgramCache]: Analyzing trace with hash 315635527, now seen corresponding path program 2 times [2022-11-02 21:01:26,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:26,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1534142169] [2022-11-02 21:01:26,376 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 21:01:26,377 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:26,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:26,378 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:26,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2022-11-02 21:01:26,758 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 21:01:26,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:01:26,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-02 21:01:26,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:27,092 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 154 proven. 28 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-11-02 21:01:27,092 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:01:27,443 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 154 proven. 28 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-11-02 21:01:27,444 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:27,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1534142169] [2022-11-02 21:01:27,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1534142169] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:01:27,444 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:01:27,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2022-11-02 21:01:27,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019580584] [2022-11-02 21:01:27,444 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:01:27,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 21:01:27,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:27,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 21:01:27,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2022-11-02 21:01:27,446 INFO L87 Difference]: Start difference. First operand 3138 states and 4386 transitions. Second operand has 19 states, 19 states have (on average 10.842105263157896) internal successors, (206), 19 states have internal predecessors, (206), 0 states have call successors, (0), 0 states 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 21:01:29,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:29,316 INFO L93 Difference]: Finished difference Result 13522 states and 19154 transitions. [2022-11-02 21:01:29,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-02 21:01:29,323 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 10.842105263157896) internal successors, (206), 19 states have internal predecessors, (206), 0 states have call successors, (0), 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 230 [2022-11-02 21:01:29,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:29,338 INFO L225 Difference]: With dead ends: 13522 [2022-11-02 21:01:29,338 INFO L226 Difference]: Without dead ends: 10520 [2022-11-02 21:01:29,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 441 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 846 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=808, Invalid=2852, Unknown=0, NotChecked=0, Total=3660 [2022-11-02 21:01:29,344 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 2247 mSDsluCounter, 2583 mSDsCounter, 0 mSdLazyCounter, 731 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2247 SdHoareTripleChecker+Valid, 2705 SdHoareTripleChecker+Invalid, 802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:29,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2247 Valid, 2705 Invalid, 802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 731 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-02 21:01:29,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10520 states. [2022-11-02 21:01:29,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10520 to 3282. [2022-11-02 21:01:29,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3282 states, 3281 states have (on average 1.3916488875342883) internal successors, (4566), 3281 states have internal predecessors, (4566), 0 states have call successors, (0), 0 states 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 21:01:29,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3282 states to 3282 states and 4566 transitions. [2022-11-02 21:01:29,499 INFO L78 Accepts]: Start accepts. Automaton has 3282 states and 4566 transitions. Word has length 230 [2022-11-02 21:01:29,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:29,500 INFO L495 AbstractCegarLoop]: Abstraction has 3282 states and 4566 transitions. [2022-11-02 21:01:29,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 10.842105263157896) internal successors, (206), 19 states have internal predecessors, (206), 0 states have call successors, (0), 0 states 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 21:01:29,500 INFO L276 IsEmpty]: Start isEmpty. Operand 3282 states and 4566 transitions. [2022-11-02 21:01:29,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-11-02 21:01:29,505 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:29,505 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, 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 21:01:29,528 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2022-11-02 21:01:29,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:01:29,718 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:29,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:29,719 INFO L85 PathProgramCache]: Analyzing trace with hash -2142608889, now seen corresponding path program 1 times [2022-11-02 21:01:29,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:29,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1201554284] [2022-11-02 21:01:29,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:29,720 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:29,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:29,721 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:29,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2022-11-02 21:01:30,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:30,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-02 21:01:30,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:30,798 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 154 proven. 30 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-11-02 21:01:30,798 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:01:31,114 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 154 proven. 30 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-11-02 21:01:31,115 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:31,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1201554284] [2022-11-02 21:01:31,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1201554284] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:01:31,116 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:01:31,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2022-11-02 21:01:31,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411415970] [2022-11-02 21:01:31,116 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:01:31,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-02 21:01:31,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:31,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-02 21:01:31,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-11-02 21:01:31,119 INFO L87 Difference]: Start difference. First operand 3282 states and 4566 transitions. Second operand has 13 states, 13 states have (on average 22.23076923076923) internal successors, (289), 13 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:31,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:31,721 INFO L93 Difference]: Finished difference Result 16118 states and 22558 transitions. [2022-11-02 21:01:31,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 21:01:31,723 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 22.23076923076923) internal successors, (289), 13 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 230 [2022-11-02 21:01:31,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:31,735 INFO L225 Difference]: With dead ends: 16118 [2022-11-02 21:01:31,736 INFO L226 Difference]: Without dead ends: 12972 [2022-11-02 21:01:31,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 464 GetRequests, 447 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 21:01:31,741 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 1103 mSDsluCounter, 1215 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1103 SdHoareTripleChecker+Valid, 1372 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:31,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1103 Valid, 1372 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:01:31,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12972 states. [2022-11-02 21:01:31,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12972 to 6426. [2022-11-02 21:01:31,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6426 states, 6425 states have (on average 1.3923735408560312) internal successors, (8946), 6425 states have internal predecessors, (8946), 0 states have call successors, (0), 0 states 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 21:01:32,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6426 states to 6426 states and 8946 transitions. [2022-11-02 21:01:32,004 INFO L78 Accepts]: Start accepts. Automaton has 6426 states and 8946 transitions. Word has length 230 [2022-11-02 21:01:32,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:32,005 INFO L495 AbstractCegarLoop]: Abstraction has 6426 states and 8946 transitions. [2022-11-02 21:01:32,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 22.23076923076923) internal successors, (289), 13 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:32,005 INFO L276 IsEmpty]: Start isEmpty. Operand 6426 states and 8946 transitions. [2022-11-02 21:01:32,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-11-02 21:01:32,016 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:32,016 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, 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 21:01:32,041 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2022-11-02 21:01:32,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:01:32,230 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:32,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:32,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1195571003, now seen corresponding path program 2 times [2022-11-02 21:01:32,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:32,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1793406086] [2022-11-02 21:01:32,232 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 21:01:32,233 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:32,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:32,234 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:32,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2022-11-02 21:01:32,575 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 21:01:32,575 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:01:32,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 21:01:32,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:33,206 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 154 proven. 29 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-02 21:01:33,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:01:33,574 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 154 proven. 29 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-02 21:01:33,574 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:33,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1793406086] [2022-11-02 21:01:33,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1793406086] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:01:33,576 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:01:33,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2022-11-02 21:01:33,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559642382] [2022-11-02 21:01:33,576 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:01:33,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 21:01:33,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:33,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 21:01:33,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-11-02 21:01:33,578 INFO L87 Difference]: Start difference. First operand 6426 states and 8946 transitions. Second operand has 12 states, 12 states have (on average 21.75) internal successors, (261), 12 states have internal predecessors, (261), 0 states have call successors, (0), 0 states 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 21:01:34,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:34,096 INFO L93 Difference]: Finished difference Result 16872 states and 23601 transitions. [2022-11-02 21:01:34,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 21:01:34,096 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 21.75) internal successors, (261), 12 states have internal predecessors, (261), 0 states have call successors, (0), 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 230 [2022-11-02 21:01:34,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:34,104 INFO L225 Difference]: With dead ends: 16872 [2022-11-02 21:01:34,104 INFO L226 Difference]: Without dead ends: 10582 [2022-11-02 21:01:34,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 447 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2022-11-02 21:01:34,112 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 1342 mSDsluCounter, 1113 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1342 SdHoareTripleChecker+Valid, 1244 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:34,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1342 Valid, 1244 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:01:34,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10582 states. [2022-11-02 21:01:34,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10582 to 7266. [2022-11-02 21:01:34,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7266 states, 7265 states have (on average 1.3750860289057123) internal successors, (9990), 7265 states have internal predecessors, (9990), 0 states have call successors, (0), 0 states 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 21:01:34,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7266 states to 7266 states and 9990 transitions. [2022-11-02 21:01:34,501 INFO L78 Accepts]: Start accepts. Automaton has 7266 states and 9990 transitions. Word has length 230 [2022-11-02 21:01:34,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:34,504 INFO L495 AbstractCegarLoop]: Abstraction has 7266 states and 9990 transitions. [2022-11-02 21:01:34,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 21.75) internal successors, (261), 12 states have internal predecessors, (261), 0 states have call successors, (0), 0 states 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 21:01:34,504 INFO L276 IsEmpty]: Start isEmpty. Operand 7266 states and 9990 transitions. [2022-11-02 21:01:34,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-11-02 21:01:34,516 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:34,516 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, 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] [2022-11-02 21:01:34,539 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2022-11-02 21:01:34,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:01:34,730 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:34,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:34,731 INFO L85 PathProgramCache]: Analyzing trace with hash 695899013, now seen corresponding path program 1 times [2022-11-02 21:01:34,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:34,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1505222248] [2022-11-02 21:01:34,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:34,732 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:34,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:34,734 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:34,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2022-11-02 21:01:35,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:35,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 21:01:35,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:35,580 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 154 proven. 34 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-02 21:01:35,580 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:01:35,885 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 187 proven. 1 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-02 21:01:35,885 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:35,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1505222248] [2022-11-02 21:01:35,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1505222248] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:01:35,886 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:01:35,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2022-11-02 21:01:35,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780677352] [2022-11-02 21:01:35,886 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:01:35,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-02 21:01:35,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:35,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-02 21:01:35,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2022-11-02 21:01:35,887 INFO L87 Difference]: Start difference. First operand 7266 states and 9990 transitions. Second operand has 17 states, 17 states have (on average 14.705882352941176) internal successors, (250), 17 states have internal predecessors, (250), 0 states have call successors, (0), 0 states 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 21:01:37,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:37,020 INFO L93 Difference]: Finished difference Result 28534 states and 39476 transitions. [2022-11-02 21:01:37,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-02 21:01:37,021 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 14.705882352941176) internal successors, (250), 17 states have internal predecessors, (250), 0 states have call successors, (0), 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 230 [2022-11-02 21:01:37,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:37,033 INFO L225 Difference]: With dead ends: 28534 [2022-11-02 21:01:37,033 INFO L226 Difference]: Without dead ends: 21404 [2022-11-02 21:01:37,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 475 GetRequests, 443 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=285, Invalid=837, Unknown=0, NotChecked=0, Total=1122 [2022-11-02 21:01:37,039 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 1420 mSDsluCounter, 2167 mSDsCounter, 0 mSdLazyCounter, 565 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1420 SdHoareTripleChecker+Valid, 2349 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:37,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1420 Valid, 2349 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 565 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 21:01:37,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21404 states. [2022-11-02 21:01:37,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21404 to 7266. [2022-11-02 21:01:37,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7266 states, 7265 states have (on average 1.3717825189263593) internal successors, (9966), 7265 states have internal predecessors, (9966), 0 states have call successors, (0), 0 states 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 21:01:37,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7266 states to 7266 states and 9966 transitions. [2022-11-02 21:01:37,340 INFO L78 Accepts]: Start accepts. Automaton has 7266 states and 9966 transitions. Word has length 230 [2022-11-02 21:01:37,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:37,340 INFO L495 AbstractCegarLoop]: Abstraction has 7266 states and 9966 transitions. [2022-11-02 21:01:37,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 14.705882352941176) internal successors, (250), 17 states have internal predecessors, (250), 0 states have call successors, (0), 0 states 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 21:01:37,341 INFO L276 IsEmpty]: Start isEmpty. Operand 7266 states and 9966 transitions. [2022-11-02 21:01:37,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-11-02 21:01:37,351 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:37,352 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, 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] [2022-11-02 21:01:37,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2022-11-02 21:01:37,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:01:37,566 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:37,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:37,567 INFO L85 PathProgramCache]: Analyzing trace with hash -396736189, now seen corresponding path program 2 times [2022-11-02 21:01:37,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:37,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1953179899] [2022-11-02 21:01:37,568 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 21:01:37,568 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:37,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:37,570 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:37,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2022-11-02 21:01:37,950 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 21:01:37,950 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:01:37,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 21:01:37,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:38,611 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 154 proven. 33 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-11-02 21:01:38,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:01:38,945 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 154 proven. 33 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-11-02 21:01:38,945 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:38,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1953179899] [2022-11-02 21:01:38,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1953179899] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:01:38,945 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:01:38,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2022-11-02 21:01:38,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818173629] [2022-11-02 21:01:38,946 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:01:38,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 21:01:38,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:38,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 21:01:38,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-11-02 21:01:38,947 INFO L87 Difference]: Start difference. First operand 7266 states and 9966 transitions. Second operand has 12 states, 12 states have (on average 22.083333333333332) internal successors, (265), 12 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 21:01:39,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:39,499 INFO L93 Difference]: Finished difference Result 17712 states and 24525 transitions. [2022-11-02 21:01:39,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 21:01:39,500 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 22.083333333333332) internal successors, (265), 12 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 230 [2022-11-02 21:01:39,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:39,507 INFO L225 Difference]: With dead ends: 17712 [2022-11-02 21:01:39,507 INFO L226 Difference]: Without dead ends: 10582 [2022-11-02 21:01:39,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 447 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2022-11-02 21:01:39,511 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 1321 mSDsluCounter, 1101 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1321 SdHoareTripleChecker+Valid, 1235 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:39,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1321 Valid, 1235 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:01:39,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10582 states. [2022-11-02 21:01:39,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10582 to 7362. [2022-11-02 21:01:39,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7362 states, 7361 states have (on average 1.3636734139383235) internal successors, (10038), 7361 states have internal predecessors, (10038), 0 states have call successors, (0), 0 states 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 21:01:39,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7362 states to 7362 states and 10038 transitions. [2022-11-02 21:01:39,831 INFO L78 Accepts]: Start accepts. Automaton has 7362 states and 10038 transitions. Word has length 230 [2022-11-02 21:01:39,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:39,832 INFO L495 AbstractCegarLoop]: Abstraction has 7362 states and 10038 transitions. [2022-11-02 21:01:39,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 22.083333333333332) internal successors, (265), 12 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 21:01:39,832 INFO L276 IsEmpty]: Start isEmpty. Operand 7362 states and 10038 transitions. [2022-11-02 21:01:39,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-11-02 21:01:39,843 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:39,844 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, 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] [2022-11-02 21:01:39,872 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2022-11-02 21:01:40,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:01:40,058 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:40,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:40,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1158362115, now seen corresponding path program 1 times [2022-11-02 21:01:40,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:40,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1462083727] [2022-11-02 21:01:40,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:40,060 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:40,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:40,062 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:40,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2022-11-02 21:01:40,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:40,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 21:01:40,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:40,833 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 154 proven. 40 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-02 21:01:40,833 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:01:41,210 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 193 proven. 1 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-02 21:01:41,210 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:41,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1462083727] [2022-11-02 21:01:41,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1462083727] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:01:41,210 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:01:41,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2022-11-02 21:01:41,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902227307] [2022-11-02 21:01:41,211 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:01:41,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-02 21:01:41,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:41,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-02 21:01:41,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2022-11-02 21:01:41,214 INFO L87 Difference]: Start difference. First operand 7362 states and 10038 transitions. Second operand has 17 states, 17 states have (on average 15.058823529411764) internal successors, (256), 17 states have internal predecessors, (256), 0 states have call successors, (0), 0 states 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 21:01:42,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:42,224 INFO L93 Difference]: Finished difference Result 16774 states and 22988 transitions. [2022-11-02 21:01:42,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-02 21:01:42,225 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 15.058823529411764) internal successors, (256), 17 states have internal predecessors, (256), 0 states have call successors, (0), 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 230 [2022-11-02 21:01:42,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:42,234 INFO L225 Difference]: With dead ends: 16774 [2022-11-02 21:01:42,234 INFO L226 Difference]: Without dead ends: 13160 [2022-11-02 21:01:42,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 475 GetRequests, 443 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=285, Invalid=837, Unknown=0, NotChecked=0, Total=1122 [2022-11-02 21:01:42,239 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 1276 mSDsluCounter, 2058 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1276 SdHoareTripleChecker+Valid, 2241 SdHoareTripleChecker+Invalid, 585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:42,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1276 Valid, 2241 Invalid, 585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 21:01:42,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13160 states. [2022-11-02 21:01:42,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13160 to 6330. [2022-11-02 21:01:42,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6330 states, 6329 states have (on average 1.3623005214093853) internal successors, (8622), 6329 states have internal predecessors, (8622), 0 states have call successors, (0), 0 states 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 21:01:42,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6330 states to 6330 states and 8622 transitions. [2022-11-02 21:01:42,451 INFO L78 Accepts]: Start accepts. Automaton has 6330 states and 8622 transitions. Word has length 230 [2022-11-02 21:01:42,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:42,452 INFO L495 AbstractCegarLoop]: Abstraction has 6330 states and 8622 transitions. [2022-11-02 21:01:42,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 15.058823529411764) internal successors, (256), 17 states have internal predecessors, (256), 0 states have call successors, (0), 0 states 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 21:01:42,452 INFO L276 IsEmpty]: Start isEmpty. Operand 6330 states and 8622 transitions. [2022-11-02 21:01:42,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-11-02 21:01:42,465 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:42,465 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, 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] [2022-11-02 21:01:42,486 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2022-11-02 21:01:42,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:01:42,685 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:42,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:42,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1150237629, now seen corresponding path program 1 times [2022-11-02 21:01:42,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:42,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1993057258] [2022-11-02 21:01:42,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:42,687 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:42,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:42,688 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:42,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2022-11-02 21:01:43,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:43,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-02 21:01:43,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:43,358 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 154 proven. 42 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-02 21:01:43,359 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:01:43,658 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 154 proven. 42 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-02 21:01:43,659 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:43,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1993057258] [2022-11-02 21:01:43,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1993057258] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:01:43,659 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:01:43,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2022-11-02 21:01:43,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072731398] [2022-11-02 21:01:43,660 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:01:43,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 21:01:43,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:43,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 21:01:43,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2022-11-02 21:01:43,661 INFO L87 Difference]: Start difference. First operand 6330 states and 8622 transitions. Second operand has 19 states, 19 states have (on average 11.578947368421053) internal successors, (220), 19 states have internal predecessors, (220), 0 states have call successors, (0), 0 states 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 21:01:45,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:45,523 INFO L93 Difference]: Finished difference Result 27218 states and 37378 transitions. [2022-11-02 21:01:45,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-02 21:01:45,523 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 11.578947368421053) internal successors, (220), 19 states have internal predecessors, (220), 0 states have call successors, (0), 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 230 [2022-11-02 21:01:45,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:45,542 INFO L225 Difference]: With dead ends: 27218 [2022-11-02 21:01:45,542 INFO L226 Difference]: Without dead ends: 21024 [2022-11-02 21:01:45,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 441 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 846 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=808, Invalid=2852, Unknown=0, NotChecked=0, Total=3660 [2022-11-02 21:01:45,550 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 2482 mSDsluCounter, 2146 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2482 SdHoareTripleChecker+Valid, 2301 SdHoareTripleChecker+Invalid, 686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:45,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2482 Valid, 2301 Invalid, 686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-02 21:01:45,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21024 states. [2022-11-02 21:01:45,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21024 to 7018. [2022-11-02 21:01:45,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7018 states, 7017 states have (on average 1.3490095482399886) internal successors, (9466), 7017 states have internal predecessors, (9466), 0 states have call successors, (0), 0 states 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 21:01:45,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7018 states to 7018 states and 9466 transitions. [2022-11-02 21:01:45,889 INFO L78 Accepts]: Start accepts. Automaton has 7018 states and 9466 transitions. Word has length 230 [2022-11-02 21:01:45,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:45,890 INFO L495 AbstractCegarLoop]: Abstraction has 7018 states and 9466 transitions. [2022-11-02 21:01:45,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 11.578947368421053) internal successors, (220), 19 states have internal predecessors, (220), 0 states have call successors, (0), 0 states 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 21:01:45,890 INFO L276 IsEmpty]: Start isEmpty. Operand 7018 states and 9466 transitions. [2022-11-02 21:01:45,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-11-02 21:01:45,898 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:45,898 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, 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] [2022-11-02 21:01:45,916 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (48)] Ended with exit code 0 [2022-11-02 21:01:46,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:01:46,116 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:46,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:46,116 INFO L85 PathProgramCache]: Analyzing trace with hash -19349757, now seen corresponding path program 1 times [2022-11-02 21:01:46,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:46,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1677518966] [2022-11-02 21:01:46,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:46,118 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:46,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:46,119 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:46,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2022-11-02 21:01:46,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:46,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 21:01:46,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:46,828 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 154 proven. 46 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-02 21:01:46,828 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:01:47,108 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 154 proven. 46 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-02 21:01:47,108 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:47,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1677518966] [2022-11-02 21:01:47,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1677518966] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:01:47,109 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:01:47,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2022-11-02 21:01:47,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043360813] [2022-11-02 21:01:47,109 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:01:47,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 21:01:47,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:47,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 21:01:47,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:01:47,111 INFO L87 Difference]: Start difference. First operand 7018 states and 9466 transitions. Second operand has 10 states, 10 states have (on average 27.6) internal successors, (276), 10 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 21:01:47,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:47,826 INFO L93 Difference]: Finished difference Result 32866 states and 44094 transitions. [2022-11-02 21:01:47,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 21:01:47,826 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 27.6) internal successors, (276), 10 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 230 [2022-11-02 21:01:47,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:47,846 INFO L225 Difference]: With dead ends: 32866 [2022-11-02 21:01:47,846 INFO L226 Difference]: Without dead ends: 25984 [2022-11-02 21:01:47,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 450 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=235, Unknown=0, NotChecked=0, Total=342 [2022-11-02 21:01:47,854 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 616 mSDsluCounter, 827 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 616 SdHoareTripleChecker+Valid, 1018 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:47,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [616 Valid, 1018 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:01:47,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25984 states. [2022-11-02 21:01:48,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25984 to 12218. [2022-11-02 21:01:48,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12218 states, 12217 states have (on average 1.3261848244249816) internal successors, (16202), 12217 states have internal predecessors, (16202), 0 states have call successors, (0), 0 states 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 21:01:48,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12218 states to 12218 states and 16202 transitions. [2022-11-02 21:01:48,195 INFO L78 Accepts]: Start accepts. Automaton has 12218 states and 16202 transitions. Word has length 230 [2022-11-02 21:01:48,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:48,196 INFO L495 AbstractCegarLoop]: Abstraction has 12218 states and 16202 transitions. [2022-11-02 21:01:48,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 27.6) internal successors, (276), 10 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 21:01:48,196 INFO L276 IsEmpty]: Start isEmpty. Operand 12218 states and 16202 transitions. [2022-11-02 21:01:48,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-11-02 21:01:48,205 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:48,205 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, 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] [2022-11-02 21:01:48,227 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2022-11-02 21:01:48,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:01:48,418 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:48,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:48,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1992515135, now seen corresponding path program 2 times [2022-11-02 21:01:48,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:48,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1622250681] [2022-11-02 21:01:48,420 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 21:01:48,420 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:48,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:48,421 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:48,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2022-11-02 21:01:48,742 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 21:01:48,742 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:01:48,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 21:01:48,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:49,062 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 154 proven. 50 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-02 21:01:49,062 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:01:49,403 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 177 proven. 27 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-02 21:01:49,403 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:49,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1622250681] [2022-11-02 21:01:49,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1622250681] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:01:49,404 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:01:49,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2022-11-02 21:01:49,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553459407] [2022-11-02 21:01:49,404 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:01:49,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 21:01:49,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:49,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 21:01:49,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2022-11-02 21:01:49,406 INFO L87 Difference]: Start difference. First operand 12218 states and 16202 transitions. Second operand has 19 states, 19 states have (on average 12.31578947368421) internal successors, (234), 19 states have internal predecessors, (234), 0 states have call successors, (0), 0 states 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 21:01:51,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:51,540 INFO L93 Difference]: Finished difference Result 76290 states and 101226 transitions. [2022-11-02 21:01:51,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-02 21:01:51,540 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 12.31578947368421) internal successors, (234), 19 states have internal predecessors, (234), 0 states have call successors, (0), 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 230 [2022-11-02 21:01:51,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:51,588 INFO L225 Difference]: With dead ends: 76290 [2022-11-02 21:01:51,588 INFO L226 Difference]: Without dead ends: 64208 [2022-11-02 21:01:51,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 441 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=399, Invalid=1323, Unknown=0, NotChecked=0, Total=1722 [2022-11-02 21:01:51,602 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 2011 mSDsluCounter, 2061 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2011 SdHoareTripleChecker+Valid, 2220 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:51,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2011 Valid, 2220 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 419 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 21:01:51,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64208 states. [2022-11-02 21:01:52,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64208 to 29562. [2022-11-02 21:01:52,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29562 states, 29561 states have (on average 1.3194411555766044) internal successors, (39004), 29561 states have internal predecessors, (39004), 0 states have call successors, (0), 0 states 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 21:01:52,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29562 states to 29562 states and 39004 transitions. [2022-11-02 21:01:52,607 INFO L78 Accepts]: Start accepts. Automaton has 29562 states and 39004 transitions. Word has length 230 [2022-11-02 21:01:52,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:52,608 INFO L495 AbstractCegarLoop]: Abstraction has 29562 states and 39004 transitions. [2022-11-02 21:01:52,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 12.31578947368421) internal successors, (234), 19 states have internal predecessors, (234), 0 states have call successors, (0), 0 states 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 21:01:52,608 INFO L276 IsEmpty]: Start isEmpty. Operand 29562 states and 39004 transitions. [2022-11-02 21:01:52,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-11-02 21:01:52,629 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:52,629 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, 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 21:01:52,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2022-11-02 21:01:52,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:01:52,842 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:52,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:52,843 INFO L85 PathProgramCache]: Analyzing trace with hash 782982273, now seen corresponding path program 1 times [2022-11-02 21:01:52,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:52,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1404414085] [2022-11-02 21:01:52,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:52,844 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:52,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:52,845 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:52,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2022-11-02 21:01:53,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:53,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 21:01:53,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:53,639 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 154 proven. 54 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-02 21:01:53,639 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:01:53,931 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 154 proven. 54 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-02 21:01:53,931 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:53,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1404414085] [2022-11-02 21:01:53,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1404414085] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:01:53,932 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:01:53,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2022-11-02 21:01:53,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166212432] [2022-11-02 21:01:53,932 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:01:53,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 21:01:53,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:53,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 21:01:53,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:01:53,934 INFO L87 Difference]: Start difference. First operand 29562 states and 39004 transitions. Second operand has 10 states, 10 states have (on average 28.4) internal successors, (284), 10 states have internal predecessors, (284), 0 states have call successors, (0), 0 states 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 21:01:55,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:55,371 INFO L93 Difference]: Finished difference Result 83330 states and 111104 transitions. [2022-11-02 21:01:55,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 21:01:55,372 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 28.4) internal successors, (284), 10 states have internal predecessors, (284), 0 states have call successors, (0), 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 230 [2022-11-02 21:01:55,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:55,417 INFO L225 Difference]: With dead ends: 83330 [2022-11-02 21:01:55,418 INFO L226 Difference]: Without dead ends: 58752 [2022-11-02 21:01:55,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 450 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=235, Unknown=0, NotChecked=0, Total=342 [2022-11-02 21:01:55,430 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 894 mSDsluCounter, 772 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 894 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:55,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [894 Valid, 963 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:01:55,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58752 states. [2022-11-02 21:01:56,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58752 to 30762. [2022-11-02 21:01:56,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30762 states, 30761 states have (on average 1.3186827476349923) internal successors, (40564), 30761 states have internal predecessors, (40564), 0 states have call successors, (0), 0 states 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 21:01:56,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30762 states to 30762 states and 40564 transitions. [2022-11-02 21:01:56,504 INFO L78 Accepts]: Start accepts. Automaton has 30762 states and 40564 transitions. Word has length 230 [2022-11-02 21:01:56,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:56,505 INFO L495 AbstractCegarLoop]: Abstraction has 30762 states and 40564 transitions. [2022-11-02 21:01:56,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 28.4) internal successors, (284), 10 states have internal predecessors, (284), 0 states have call successors, (0), 0 states 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 21:01:56,505 INFO L276 IsEmpty]: Start isEmpty. Operand 30762 states and 40564 transitions. [2022-11-02 21:01:56,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-11-02 21:01:56,520 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:56,520 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, 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 21:01:56,534 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (51)] Forceful destruction successful, exit code 0 [2022-11-02 21:01:56,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:01:56,721 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:56,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:56,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1614488257, now seen corresponding path program 2 times [2022-11-02 21:01:56,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:01:56,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1224262487] [2022-11-02 21:01:56,722 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 21:01:56,722 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:01:56,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:01:56,723 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:01:56,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2022-11-02 21:01:57,058 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 21:01:57,059 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:01:57,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 21:01:57,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:01:57,468 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 154 proven. 58 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-02 21:01:57,468 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:01:57,831 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 195 proven. 17 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-02 21:01:57,831 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:01:57,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1224262487] [2022-11-02 21:01:57,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1224262487] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:01:57,832 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:01:57,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-11-02 21:01:57,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295686004] [2022-11-02 21:01:57,832 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:01:57,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 21:01:57,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:01:57,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 21:01:57,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-02 21:01:57,833 INFO L87 Difference]: Start difference. First operand 30762 states and 40564 transitions. Second operand has 11 states, 11 states have (on average 23.272727272727273) internal successors, (256), 11 states have internal predecessors, (256), 0 states have call successors, (0), 0 states 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 21:01:59,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:59,850 INFO L93 Difference]: Finished difference Result 129282 states and 171412 transitions. [2022-11-02 21:01:59,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 21:01:59,851 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 23.272727272727273) internal successors, (256), 11 states have internal predecessors, (256), 0 states have call successors, (0), 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 230 [2022-11-02 21:01:59,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:59,936 INFO L225 Difference]: With dead ends: 129282 [2022-11-02 21:01:59,936 INFO L226 Difference]: Without dead ends: 98752 [2022-11-02 21:01:59,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 449 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2022-11-02 21:01:59,961 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 948 mSDsluCounter, 1076 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 948 SdHoareTripleChecker+Valid, 1225 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:59,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [948 Valid, 1225 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:02:00,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98752 states. [2022-11-02 21:02:01,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98752 to 56490. [2022-11-02 21:02:01,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56490 states, 56489 states have (on average 1.324080794490963) internal successors, (74796), 56489 states have internal predecessors, (74796), 0 states have call successors, (0), 0 states 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 21:02:01,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56490 states to 56490 states and 74796 transitions. [2022-11-02 21:02:01,853 INFO L78 Accepts]: Start accepts. Automaton has 56490 states and 74796 transitions. Word has length 230 [2022-11-02 21:02:01,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:02:01,854 INFO L495 AbstractCegarLoop]: Abstraction has 56490 states and 74796 transitions. [2022-11-02 21:02:01,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 23.272727272727273) internal successors, (256), 11 states have internal predecessors, (256), 0 states have call successors, (0), 0 states 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 21:02:01,854 INFO L276 IsEmpty]: Start isEmpty. Operand 56490 states and 74796 transitions. [2022-11-02 21:02:01,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-11-02 21:02:01,868 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:01,868 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, 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 21:02:01,886 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (52)] Forceful destruction successful, exit code 0 [2022-11-02 21:02:02,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:02:02,082 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:02:02,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:02,083 INFO L85 PathProgramCache]: Analyzing trace with hash 2046449663, now seen corresponding path program 1 times [2022-11-02 21:02:02,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:02:02,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [997127647] [2022-11-02 21:02:02,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:02,084 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:02:02,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:02:02,088 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:02:02,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2022-11-02 21:02:02,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:02,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 21:02:02,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:02:02,749 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 154 proven. 60 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-02 21:02:02,749 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:02:03,006 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 195 proven. 19 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-02 21:02:03,006 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:02:03,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [997127647] [2022-11-02 21:02:03,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [997127647] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:02:03,006 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:02:03,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-11-02 21:02:03,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743936962] [2022-11-02 21:02:03,007 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:02:03,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 21:02:03,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:02:03,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 21:02:03,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-02 21:02:03,009 INFO L87 Difference]: Start difference. First operand 56490 states and 74796 transitions. Second operand has 11 states, 11 states have (on average 23.454545454545453) internal successors, (258), 11 states have internal predecessors, (258), 0 states have call successors, (0), 0 states 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 21:02:05,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:02:05,243 INFO L93 Difference]: Finished difference Result 142034 states and 189112 transitions. [2022-11-02 21:02:05,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 21:02:05,244 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 23.454545454545453) internal successors, (258), 11 states have internal predecessors, (258), 0 states have call successors, (0), 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 230 [2022-11-02 21:02:05,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:02:05,312 INFO L225 Difference]: With dead ends: 142034 [2022-11-02 21:02:05,312 INFO L226 Difference]: Without dead ends: 95056 [2022-11-02 21:02:05,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 449 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2022-11-02 21:02:05,356 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 921 mSDsluCounter, 954 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 921 SdHoareTripleChecker+Valid, 1110 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:02:05,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [921 Valid, 1110 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:02:05,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95056 states. [2022-11-02 21:02:06,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95056 to 56650. [2022-11-02 21:02:06,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56650 states, 56649 states have (on average 1.3210471499938217) internal successors, (74836), 56649 states have internal predecessors, (74836), 0 states have call successors, (0), 0 states 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 21:02:07,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56650 states to 56650 states and 74836 transitions. [2022-11-02 21:02:07,083 INFO L78 Accepts]: Start accepts. Automaton has 56650 states and 74836 transitions. Word has length 230 [2022-11-02 21:02:07,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:02:07,083 INFO L495 AbstractCegarLoop]: Abstraction has 56650 states and 74836 transitions. [2022-11-02 21:02:07,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 23.454545454545453) internal successors, (258), 11 states have internal predecessors, (258), 0 states have call successors, (0), 0 states 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 21:02:07,084 INFO L276 IsEmpty]: Start isEmpty. Operand 56650 states and 74836 transitions. [2022-11-02 21:02:07,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2022-11-02 21:02:07,121 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:07,121 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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 21:02:07,138 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (53)] Forceful destruction successful, exit code 0 [2022-11-02 21:02:07,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:02:07,329 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:02:07,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:07,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1687881259, now seen corresponding path program 1 times [2022-11-02 21:02:07,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:02:07,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1401409997] [2022-11-02 21:02:07,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:07,331 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:02:07,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:02:07,332 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:02:07,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2022-11-02 21:02:07,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:07,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 1370 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-02 21:02:07,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:02:08,253 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 291 proven. 62 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-11-02 21:02:08,253 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:02:08,565 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 291 proven. 62 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-11-02 21:02:08,565 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:02:08,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1401409997] [2022-11-02 21:02:08,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1401409997] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:02:08,565 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:02:08,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2022-11-02 21:02:08,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021750811] [2022-11-02 21:02:08,566 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:02:08,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 21:02:08,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:02:08,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 21:02:08,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2022-11-02 21:02:08,567 INFO L87 Difference]: Start difference. First operand 56650 states and 74836 transitions. Second operand has 19 states, 19 states have (on average 12.894736842105264) internal successors, (245), 19 states have internal predecessors, (245), 0 states have call successors, (0), 0 states 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 21:02:13,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:02:13,052 INFO L93 Difference]: Finished difference Result 337654 states and 446696 transitions. [2022-11-02 21:02:13,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-11-02 21:02:13,052 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 12.894736842105264) internal successors, (245), 19 states have internal predecessors, (245), 0 states have call successors, (0), 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 305 [2022-11-02 21:02:13,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:02:13,305 INFO L225 Difference]: With dead ends: 337654 [2022-11-02 21:02:13,305 INFO L226 Difference]: Without dead ends: 288916 [2022-11-02 21:02:13,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 653 GetRequests, 591 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1022 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=881, Invalid=3151, Unknown=0, NotChecked=0, Total=4032 [2022-11-02 21:02:13,363 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 3765 mSDsluCounter, 2505 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3765 SdHoareTripleChecker+Valid, 2770 SdHoareTripleChecker+Invalid, 650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 21:02:13,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3765 Valid, 2770 Invalid, 650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 533 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 21:02:13,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288916 states. [2022-11-02 21:02:16,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288916 to 100266. [2022-11-02 21:02:16,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100266 states, 100265 states have (on average 1.315872936717698) internal successors, (131936), 100265 states have internal predecessors, (131936), 0 states have call successors, (0), 0 states 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 21:02:16,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100266 states to 100266 states and 131936 transitions. [2022-11-02 21:02:16,285 INFO L78 Accepts]: Start accepts. Automaton has 100266 states and 131936 transitions. Word has length 305 [2022-11-02 21:02:16,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:02:16,286 INFO L495 AbstractCegarLoop]: Abstraction has 100266 states and 131936 transitions. [2022-11-02 21:02:16,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 12.894736842105264) internal successors, (245), 19 states have internal predecessors, (245), 0 states have call successors, (0), 0 states 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 21:02:16,287 INFO L276 IsEmpty]: Start isEmpty. Operand 100266 states and 131936 transitions. [2022-11-02 21:02:16,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2022-11-02 21:02:16,373 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:16,374 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:02:16,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (54)] Forceful destruction successful, exit code 0 [2022-11-02 21:02:16,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:02:16,594 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:02:16,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:16,595 INFO L85 PathProgramCache]: Analyzing trace with hash 671562223, now seen corresponding path program 1 times [2022-11-02 21:02:16,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:02:16,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [134043737] [2022-11-02 21:02:16,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:16,596 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:02:16,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:02:16,597 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:02:16,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2022-11-02 21:02:17,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:17,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 1370 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-02 21:02:17,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:02:17,698 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 293 proven. 64 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2022-11-02 21:02:17,698 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:02:18,035 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 293 proven. 64 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2022-11-02 21:02:18,035 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:02:18,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [134043737] [2022-11-02 21:02:18,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [134043737] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:02:18,036 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:02:18,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2022-11-02 21:02:18,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749022410] [2022-11-02 21:02:18,036 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:02:18,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-02 21:02:18,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:02:18,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-02 21:02:18,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-11-02 21:02:18,038 INFO L87 Difference]: Start difference. First operand 100266 states and 131936 transitions. Second operand has 13 states, 13 states have (on average 27.923076923076923) internal successors, (363), 13 states have internal predecessors, (363), 0 states have call successors, (0), 0 states 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 21:02:20,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:02:20,699 INFO L93 Difference]: Finished difference Result 282850 states and 374084 transitions. [2022-11-02 21:02:20,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 21:02:20,699 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 27.923076923076923) internal successors, (363), 13 states have internal predecessors, (363), 0 states have call successors, (0), 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 305 [2022-11-02 21:02:20,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:02:20,855 INFO L225 Difference]: With dead ends: 282850 [2022-11-02 21:02:20,855 INFO L226 Difference]: Without dead ends: 182816 [2022-11-02 21:02:20,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 615 GetRequests, 597 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2022-11-02 21:02:20,892 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 900 mSDsluCounter, 1022 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 900 SdHoareTripleChecker+Valid, 1174 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:02:20,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [900 Valid, 1174 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:02:20,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182816 states. [2022-11-02 21:02:23,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182816 to 110986. [2022-11-02 21:02:23,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110986 states, 110985 states have (on average 1.3148443483353607) internal successors, (145928), 110985 states have internal predecessors, (145928), 0 states have call successors, (0), 0 states 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 21:02:23,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110986 states to 110986 states and 145928 transitions. [2022-11-02 21:02:23,856 INFO L78 Accepts]: Start accepts. Automaton has 110986 states and 145928 transitions. Word has length 305 [2022-11-02 21:02:23,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:02:23,856 INFO L495 AbstractCegarLoop]: Abstraction has 110986 states and 145928 transitions. [2022-11-02 21:02:23,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 27.923076923076923) internal successors, (363), 13 states have internal predecessors, (363), 0 states have call successors, (0), 0 states 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 21:02:23,856 INFO L276 IsEmpty]: Start isEmpty. Operand 110986 states and 145928 transitions. [2022-11-02 21:02:23,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2022-11-02 21:02:23,891 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:23,892 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:02:23,907 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (55)] Forceful destruction successful, exit code 0 [2022-11-02 21:02:24,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:02:24,092 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:02:24,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:24,093 INFO L85 PathProgramCache]: Analyzing trace with hash -654488655, now seen corresponding path program 1 times [2022-11-02 21:02:24,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:02:24,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1566014363] [2022-11-02 21:02:24,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:24,095 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:02:24,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:02:24,096 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:02:24,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6045fdac-fb19-4a3e-a514-9196689c945b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2022-11-02 21:02:24,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:24,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 1370 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 21:02:24,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:02:25,075 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 295 proven. 63 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-11-02 21:02:25,075 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:02:25,454 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 295 proven. 63 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-11-02 21:02:25,454 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:02:25,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1566014363] [2022-11-02 21:02:25,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1566014363] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:02:25,455 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:02:25,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2022-11-02 21:02:25,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397741118] [2022-11-02 21:02:25,455 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:02:25,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 21:02:25,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:02:25,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 21:02:25,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-11-02 21:02:25,457 INFO L87 Difference]: Start difference. First operand 110986 states and 145928 transitions. Second operand has 12 states, 12 states have (on average 25.083333333333332) internal successors, (301), 12 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)