./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p14.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/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_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p14.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/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_b4b3d9a9-655c-40b0-b41e-bec151da9688/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 3f53cdfefb3b8deaa85e478a46d174641ebfd83c5eabb855b34643b8ebf35e98 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:07:14,898 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:07:14,901 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:07:14,951 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:07:14,952 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:07:14,957 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:07:14,960 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:07:14,963 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:07:14,966 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:07:14,971 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:07:14,972 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:07:14,974 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:07:14,975 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:07:14,977 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:07:14,979 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:07:14,981 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:07:14,983 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:07:14,984 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:07:14,986 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:07:14,994 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:07:14,996 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:07:14,997 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:07:15,001 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:07:15,002 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:07:15,010 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:07:15,011 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:07:15,011 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:07:15,013 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:07:15,013 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:07:15,015 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:07:15,016 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:07:15,017 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:07:15,019 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:07:15,020 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:07:15,021 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:07:15,021 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:07:15,022 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:07:15,022 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:07:15,022 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:07:15,023 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:07:15,024 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:07:15,025 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-02 20:07:15,063 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:07:15,063 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:07:15,064 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:07:15,064 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:07:15,065 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:07:15,065 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:07:15,066 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:07:15,066 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:07:15,066 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:07:15,066 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:07:15,067 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:07:15,068 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:07:15,068 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:07:15,068 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:07:15,068 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:07:15,069 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:07:15,069 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:07:15,069 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:07:15,069 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:07:15,069 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:07:15,070 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:07:15,070 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:07:15,070 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:07:15,070 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:07:15,071 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:07:15,071 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:07:15,071 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:07:15,071 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:07:15,071 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:07:15,072 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:07:15,072 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_b4b3d9a9-655c-40b0-b41e-bec151da9688/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f53cdfefb3b8deaa85e478a46d174641ebfd83c5eabb855b34643b8ebf35e98 [2022-11-02 20:07:15,369 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:07:15,408 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:07:15,411 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:07:15,413 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:07:15,413 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:07:15,415 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p14.c [2022-11-02 20:07:15,489 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/data/e28fe1eda/793a33756ea941b9ac03926f5f180a60/FLAGcdd634bef [2022-11-02 20:07:16,006 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:07:16,007 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p14.c [2022-11-02 20:07:16,026 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/data/e28fe1eda/793a33756ea941b9ac03926f5f180a60/FLAGcdd634bef [2022-11-02 20:07:16,310 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/data/e28fe1eda/793a33756ea941b9ac03926f5f180a60 [2022-11-02 20:07:16,314 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:07:16,315 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:07:16,318 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:07:16,318 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:07:16,322 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:07:16,323 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:07:16" (1/1) ... [2022-11-02 20:07:16,324 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67fd7a9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:16, skipping insertion in model container [2022-11-02 20:07:16,325 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:07:16" (1/1) ... [2022-11-02 20:07:16,332 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:07:16,382 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:07:16,621 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_b4b3d9a9-655c-40b0-b41e-bec151da9688/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p14.c[1107,1120] [2022-11-02 20:07:16,712 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:07:16,715 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:07:16,725 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_b4b3d9a9-655c-40b0-b41e-bec151da9688/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p14.c[1107,1120] [2022-11-02 20:07:16,857 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:07:16,870 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:07:16,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:16 WrapperNode [2022-11-02 20:07:16,871 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:07:16,872 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:07:16,873 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:07:16,882 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:07:16,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:16" (1/1) ... [2022-11-02 20:07:16,908 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:16" (1/1) ... [2022-11-02 20:07:16,961 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 548 [2022-11-02 20:07:16,961 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:07:16,962 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:07:16,962 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:07:16,962 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:07:16,971 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:16" (1/1) ... [2022-11-02 20:07:16,972 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:16" (1/1) ... [2022-11-02 20:07:16,979 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:16" (1/1) ... [2022-11-02 20:07:16,979 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:16" (1/1) ... [2022-11-02 20:07:16,994 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:16" (1/1) ... [2022-11-02 20:07:16,999 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:16" (1/1) ... [2022-11-02 20:07:17,004 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:16" (1/1) ... [2022-11-02 20:07:17,007 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:16" (1/1) ... [2022-11-02 20:07:17,014 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:07:17,015 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:07:17,015 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:07:17,015 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:07:17,016 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:16" (1/1) ... [2022-11-02 20:07:17,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:07:17,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:07:17,081 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:07:17,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:07:17,129 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:07:17,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:07:17,330 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:07:17,348 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:07:18,105 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:07:18,122 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:07:18,122 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 20:07:18,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:07:18 BoogieIcfgContainer [2022-11-02 20:07:18,125 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:07:18,127 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:07:18,128 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:07:18,132 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:07:18,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:07:16" (1/3) ... [2022-11-02 20:07:18,134 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ab6502b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:07:18, skipping insertion in model container [2022-11-02 20:07:18,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:16" (2/3) ... [2022-11-02 20:07:18,135 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ab6502b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:07:18, skipping insertion in model container [2022-11-02 20:07:18,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:07:18" (3/3) ... [2022-11-02 20:07:18,137 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p14.c [2022-11-02 20:07:18,157 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:07:18,157 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:07:18,218 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:07:18,226 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;@1e388f17, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:07:18,226 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:07:18,231 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 20:07:18,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 20:07:18,238 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:07:18,239 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 20:07:18,239 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:07:18,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:18,245 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-02 20:07:18,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:07:18,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617468532] [2022-11-02 20:07:18,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:18,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:07:18,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:07:18,723 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:07:18,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:07:18,961 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:07:18,967 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:07:18,969 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-02 20:07:18,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:07:18,976 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-02 20:07:18,981 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 20:07:19,023 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-02 20:07:19,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 08:07:19 BoogieIcfgContainer [2022-11-02 20:07:19,045 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 20:07:19,048 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 20:07:19,048 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 20:07:19,049 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 20:07:19,049 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:07:18" (3/4) ... [2022-11-02 20:07:19,052 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-02 20:07:19,053 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 20:07:19,054 INFO L158 Benchmark]: Toolchain (without parser) took 2738.40ms. Allocated memory is still 117.4MB. Free memory was 80.5MB in the beginning and 77.7MB in the end (delta: 2.8MB). Peak memory consumption was 3.5MB. Max. memory is 16.1GB. [2022-11-02 20:07:19,055 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 117.4MB. Free memory was 98.0MB in the beginning and 97.9MB in the end (delta: 86.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:07:19,056 INFO L158 Benchmark]: CACSL2BoogieTranslator took 553.43ms. Allocated memory is still 117.4MB. Free memory was 80.2MB in the beginning and 85.2MB in the end (delta: -5.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-02 20:07:19,057 INFO L158 Benchmark]: Boogie Procedure Inliner took 89.10ms. Allocated memory is still 117.4MB. Free memory was 85.2MB in the beginning and 79.3MB in the end (delta: 5.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-02 20:07:19,058 INFO L158 Benchmark]: Boogie Preprocessor took 51.99ms. Allocated memory is still 117.4MB. Free memory was 79.3MB in the beginning and 76.1MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 20:07:19,064 INFO L158 Benchmark]: RCFGBuilder took 1110.14ms. Allocated memory is still 117.4MB. Free memory was 75.8MB in the beginning and 74.6MB in the end (delta: 1.2MB). Peak memory consumption was 37.0MB. Max. memory is 16.1GB. [2022-11-02 20:07:19,064 INFO L158 Benchmark]: TraceAbstraction took 918.16ms. Allocated memory is still 117.4MB. Free memory was 73.9MB in the beginning and 78.3MB in the end (delta: -4.4MB). Peak memory consumption was 31.8MB. Max. memory is 16.1GB. [2022-11-02 20:07:19,066 INFO L158 Benchmark]: Witness Printer took 4.64ms. Allocated memory is still 117.4MB. Free memory was 78.3MB in the beginning and 77.7MB in the end (delta: 641.1kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 20:07:19,079 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 117.4MB. Free memory was 98.0MB in the beginning and 97.9MB in the end (delta: 86.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 553.43ms. Allocated memory is still 117.4MB. Free memory was 80.2MB in the beginning and 85.2MB in the end (delta: -5.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 89.10ms. Allocated memory is still 117.4MB. Free memory was 85.2MB in the beginning and 79.3MB in the end (delta: 5.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 51.99ms. Allocated memory is still 117.4MB. Free memory was 79.3MB in the beginning and 76.1MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1110.14ms. Allocated memory is still 117.4MB. Free memory was 75.8MB in the beginning and 74.6MB in the end (delta: 1.2MB). Peak memory consumption was 37.0MB. Max. memory is 16.1GB. * TraceAbstraction took 918.16ms. Allocated memory is still 117.4MB. Free memory was 73.9MB in the beginning and 78.3MB in the end (delta: -4.4MB). Peak memory consumption was 31.8MB. Max. memory is 16.1GB. * Witness Printer took 4.64ms. Allocated memory is still 117.4MB. Free memory was 78.3MB in the beginning and 77.7MB in the end (delta: 641.1kB). Peak memory consumption was 2.1MB. 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 152, overapproximation of bitwiseOr at line 161, overapproximation of bitwiseAnd at line 146. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L28] const SORT_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 8); [L29] const SORT_3 msb_SORT_3 = (SORT_3)1 << (8 - 1); [L31] const SORT_10 mask_SORT_10 = (SORT_10)-1 >> (sizeof(SORT_10) * 8 - 32); [L32] const SORT_10 msb_SORT_10 = (SORT_10)1 << (32 - 1); [L34] const SORT_32 mask_SORT_32 = (SORT_32)-1 >> (sizeof(SORT_32) * 8 - 4); [L35] const SORT_32 msb_SORT_32 = (SORT_32)1 << (4 - 1); [L37] const SORT_70 mask_SORT_70 = (SORT_70)-1 >> (sizeof(SORT_70) * 8 - 10); [L38] const SORT_70 msb_SORT_70 = (SORT_70)1 << (10 - 1); [L40] const SORT_1 var_7 = 0; [L41] const SORT_10 var_12 = 0; [L42] const SORT_1 var_22 = 1; [L43] const SORT_70 var_71 = 0; [L44] const SORT_10 var_95 = 104; [L45] const SORT_10 var_143 = 1; [L47] SORT_1 input_2; [L48] SORT_3 input_4; [L49] SORT_1 input_5; [L50] SORT_1 input_6; [L51] SORT_1 input_30; [L52] SORT_32 input_33; [L53] SORT_1 input_35; [L54] SORT_32 input_37; [L55] SORT_1 input_39; [L56] SORT_1 input_41; [L57] SORT_1 input_47; [L58] SORT_1 input_49; [L59] SORT_1 input_51; [L60] SORT_3 input_55; [L61] SORT_1 input_58; [L62] SORT_1 input_66; [L63] SORT_1 input_75; [L64] SORT_1 input_77; [L65] SORT_1 input_89; [L66] SORT_1 input_90; [L67] SORT_1 input_91; [L68] SORT_1 input_105; [L69] SORT_1 input_111; [L70] SORT_1 input_117; [L71] SORT_1 input_123; [L72] SORT_1 input_124; [L73] SORT_1 input_125; [L74] SORT_70 input_141; [L76] SORT_1 state_8 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L77] SORT_1 state_15 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L78] SORT_1 state_26 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L79] SORT_1 state_28 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L80] SORT_1 state_43 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L81] SORT_1 state_45 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L82] SORT_1 state_53 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L83] SORT_1 state_60 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L84] SORT_1 state_62 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L85] SORT_1 state_64 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L86] SORT_1 state_68 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L87] SORT_70 state_72 = __VERIFIER_nondet_ushort() & mask_SORT_70; [L89] SORT_1 init_9_arg_1 = var_7; [L90] state_8 = init_9_arg_1 [L91] SORT_1 init_16_arg_1 = var_7; [L92] state_15 = init_16_arg_1 [L93] SORT_1 init_27_arg_1 = var_7; [L94] state_26 = init_27_arg_1 [L95] SORT_1 init_29_arg_1 = var_7; [L96] state_28 = init_29_arg_1 [L97] SORT_1 init_44_arg_1 = var_7; [L98] state_43 = init_44_arg_1 [L99] SORT_1 init_46_arg_1 = var_7; [L100] state_45 = init_46_arg_1 [L101] SORT_1 init_54_arg_1 = var_22; [L102] state_53 = init_54_arg_1 [L103] SORT_1 init_61_arg_1 = var_7; [L104] state_60 = init_61_arg_1 [L105] SORT_1 init_63_arg_1 = var_7; [L106] state_62 = init_63_arg_1 [L107] SORT_1 init_65_arg_1 = var_7; [L108] state_64 = init_65_arg_1 [L109] SORT_1 init_69_arg_1 = var_7; [L110] state_68 = init_69_arg_1 [L111] SORT_70 init_73_arg_1 = var_71; [L112] state_72 = init_73_arg_1 VAL [init_16_arg_1=0, init_27_arg_1=0, init_29_arg_1=0, init_44_arg_1=0, init_46_arg_1=0, init_54_arg_1=1, init_61_arg_1=0, init_63_arg_1=0, init_65_arg_1=0, init_69_arg_1=0, init_73_arg_1=0, init_9_arg_1=0, mask_SORT_1=1, mask_SORT_10=4294967295, mask_SORT_3=255, mask_SORT_32=15, mask_SORT_70=1023, msb_SORT_1=1, msb_SORT_10=2147483648, msb_SORT_3=128, msb_SORT_32=8, msb_SORT_70=512, state_15=0, state_26=0, state_28=0, state_43=0, state_45=0, state_53=1, state_60=0, state_62=0, state_64=0, state_68=0, state_72=0, state_8=0, var_12=0, var_143=1, var_22=1, var_7=0, var_71=0, var_95=104] [L115] input_2 = __VERIFIER_nondet_uchar() [L116] input_4 = __VERIFIER_nondet_uchar() [L117] input_5 = __VERIFIER_nondet_uchar() [L118] input_6 = __VERIFIER_nondet_uchar() [L119] input_30 = __VERIFIER_nondet_uchar() [L120] input_33 = __VERIFIER_nondet_uchar() [L121] input_35 = __VERIFIER_nondet_uchar() [L122] input_37 = __VERIFIER_nondet_uchar() [L123] input_39 = __VERIFIER_nondet_uchar() [L124] input_41 = __VERIFIER_nondet_uchar() [L125] input_47 = __VERIFIER_nondet_uchar() [L126] input_49 = __VERIFIER_nondet_uchar() [L127] input_51 = __VERIFIER_nondet_uchar() [L128] input_55 = __VERIFIER_nondet_uchar() [L129] input_58 = __VERIFIER_nondet_uchar() [L130] input_66 = __VERIFIER_nondet_uchar() [L131] input_75 = __VERIFIER_nondet_uchar() [L132] input_77 = __VERIFIER_nondet_uchar() [L133] input_89 = __VERIFIER_nondet_uchar() [L134] input_90 = __VERIFIER_nondet_uchar() [L135] input_91 = __VERIFIER_nondet_uchar() [L136] input_105 = __VERIFIER_nondet_uchar() [L137] input_111 = __VERIFIER_nondet_uchar() [L138] input_117 = __VERIFIER_nondet_uchar() [L139] input_123 = __VERIFIER_nondet_uchar() [L140] input_124 = __VERIFIER_nondet_uchar() [L141] input_125 = __VERIFIER_nondet_uchar() [L142] input_141 = __VERIFIER_nondet_ushort() [L145] SORT_1 var_11_arg_0 = state_8; [L146] var_11_arg_0 = var_11_arg_0 & mask_SORT_1 [L147] SORT_10 var_11 = var_11_arg_0; [L148] SORT_10 var_13_arg_0 = var_11; [L149] SORT_10 var_13_arg_1 = var_12; [L150] SORT_1 var_13 = var_13_arg_0 == var_13_arg_1; [L151] SORT_1 var_14_arg_0 = var_13; [L152] SORT_1 var_14 = ~var_14_arg_0; [L153] SORT_1 var_17_arg_0 = state_15; [L154] var_17_arg_0 = var_17_arg_0 & mask_SORT_1 [L155] SORT_10 var_17 = var_17_arg_0; [L156] SORT_10 var_18_arg_0 = var_17; [L157] SORT_10 var_18_arg_1 = var_12; [L158] SORT_1 var_18 = var_18_arg_0 == var_18_arg_1; [L159] SORT_1 var_19_arg_0 = var_14; [L160] SORT_1 var_19_arg_1 = var_18; [L161] SORT_1 var_19 = var_19_arg_0 | var_19_arg_1; [L162] SORT_1 var_23_arg_0 = var_19; [L163] SORT_1 var_23 = ~var_23_arg_0; [L164] SORT_1 var_24_arg_0 = var_22; [L165] SORT_1 var_24_arg_1 = var_23; [L166] SORT_1 var_24 = var_24_arg_0 & var_24_arg_1; [L167] var_24 = var_24 & mask_SORT_1 [L168] SORT_1 bad_25_arg_0 = var_24; [L169] CALL __VERIFIER_assert(!(bad_25_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: 0.8s, 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, 0.4s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-02 20:07:19,134 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/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_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p14.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/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_b4b3d9a9-655c-40b0-b41e-bec151da9688/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 3f53cdfefb3b8deaa85e478a46d174641ebfd83c5eabb855b34643b8ebf35e98 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:07:21,503 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:07:21,505 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:07:21,544 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:07:21,545 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:07:21,549 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:07:21,551 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:07:21,557 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:07:21,563 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:07:21,566 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:07:21,566 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:07:21,567 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:07:21,568 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:07:21,569 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:07:21,570 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:07:21,571 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:07:21,572 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:07:21,573 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:07:21,574 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:07:21,585 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:07:21,588 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:07:21,592 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:07:21,595 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:07:21,597 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:07:21,605 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:07:21,606 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:07:21,606 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:07:21,607 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:07:21,607 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:07:21,608 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:07:21,609 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:07:21,609 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:07:21,610 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:07:21,611 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:07:21,612 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:07:21,612 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:07:21,613 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:07:21,613 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:07:21,614 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:07:21,616 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:07:21,618 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:07:21,619 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-02 20:07:21,659 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:07:21,659 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:07:21,660 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:07:21,660 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:07:21,661 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:07:21,662 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:07:21,663 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:07:21,663 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:07:21,664 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:07:21,664 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:07:21,665 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:07:21,665 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:07:21,666 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:07:21,666 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:07:21,666 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-02 20:07:21,666 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-02 20:07:21,667 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-02 20:07:21,667 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:07:21,667 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:07:21,667 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:07:21,668 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:07:21,668 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:07:21,668 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:07:21,668 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:07:21,669 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:07:21,669 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:07:21,669 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:07:21,670 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-02 20:07:21,670 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-02 20:07:21,670 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:07:21,670 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:07:21,671 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:07:21,671 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-02 20:07:21,671 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_b4b3d9a9-655c-40b0-b41e-bec151da9688/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f53cdfefb3b8deaa85e478a46d174641ebfd83c5eabb855b34643b8ebf35e98 [2022-11-02 20:07:22,123 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:07:22,158 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:07:22,161 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:07:22,162 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:07:22,165 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:07:22,167 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p14.c [2022-11-02 20:07:22,236 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/data/fd5c67377/d2110eb325ec4a889148a3f494716d3c/FLAG9392cdded [2022-11-02 20:07:22,757 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:07:22,758 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p14.c [2022-11-02 20:07:22,767 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/data/fd5c67377/d2110eb325ec4a889148a3f494716d3c/FLAG9392cdded [2022-11-02 20:07:23,095 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/data/fd5c67377/d2110eb325ec4a889148a3f494716d3c [2022-11-02 20:07:23,097 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:07:23,100 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:07:23,104 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:07:23,104 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:07:23,108 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:07:23,109 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:07:23" (1/1) ... [2022-11-02 20:07:23,110 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cf147d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:23, skipping insertion in model container [2022-11-02 20:07:23,110 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:07:23" (1/1) ... [2022-11-02 20:07:23,119 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:07:23,175 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:07:23,381 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_b4b3d9a9-655c-40b0-b41e-bec151da9688/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p14.c[1107,1120] [2022-11-02 20:07:23,577 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:07:23,581 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:07:23,592 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_b4b3d9a9-655c-40b0-b41e-bec151da9688/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p14.c[1107,1120] [2022-11-02 20:07:23,645 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:07:23,658 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:07:23,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:23 WrapperNode [2022-11-02 20:07:23,658 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:07:23,660 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:07:23,660 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:07:23,660 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:07:23,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:23" (1/1) ... [2022-11-02 20:07:23,680 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:23" (1/1) ... [2022-11-02 20:07:23,717 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 548 [2022-11-02 20:07:23,718 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:07:23,718 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:07:23,719 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:07:23,719 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:07:23,728 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:23" (1/1) ... [2022-11-02 20:07:23,728 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:23" (1/1) ... [2022-11-02 20:07:23,734 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:23" (1/1) ... [2022-11-02 20:07:23,739 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:23" (1/1) ... [2022-11-02 20:07:23,748 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:23" (1/1) ... [2022-11-02 20:07:23,767 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:23" (1/1) ... [2022-11-02 20:07:23,770 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:23" (1/1) ... [2022-11-02 20:07:23,778 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:23" (1/1) ... [2022-11-02 20:07:23,783 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:07:23,787 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:07:23,787 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:07:23,788 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:07:23,788 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:23" (1/1) ... [2022-11-02 20:07:23,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:07:23,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:07:23,816 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:07:23,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:07:23,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:07:23,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:07:24,131 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:07:24,133 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:07:24,795 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:07:24,807 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:07:24,807 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 20:07:24,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:07:24 BoogieIcfgContainer [2022-11-02 20:07:24,809 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:07:24,812 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:07:24,812 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:07:24,815 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:07:24,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:07:23" (1/3) ... [2022-11-02 20:07:24,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5432d526 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:07:24, skipping insertion in model container [2022-11-02 20:07:24,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:07:23" (2/3) ... [2022-11-02 20:07:24,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5432d526 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:07:24, skipping insertion in model container [2022-11-02 20:07:24,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:07:24" (3/3) ... [2022-11-02 20:07:24,823 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p14.c [2022-11-02 20:07:24,843 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:07:24,843 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:07:24,906 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:07:24,912 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;@31fc1505, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:07:24,913 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:07:24,917 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 20:07:24,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 20:07:24,924 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:07:24,925 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 20:07:24,925 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:07:24,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:24,931 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-02 20:07:24,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:07:24,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1493243447] [2022-11-02 20:07:24,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:24,944 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:07:24,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:07:24,951 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:07:24,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-02 20:07:25,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:25,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-02 20:07:25,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:07:25,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:07:25,378 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:07:25,379 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:07:25,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1493243447] [2022-11-02 20:07:25,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1493243447] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:07:25,380 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:07:25,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:07:25,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488285766] [2022-11-02 20:07:25,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:07:25,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:07:25,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:07:25,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:07:25,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:07:25,427 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 20:07:25,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:07:25,627 INFO L93 Difference]: Finished difference Result 236 states and 354 transitions. [2022-11-02 20:07:25,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:07:25,631 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-02 20:07:25,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:07:25,643 INFO L225 Difference]: With dead ends: 236 [2022-11-02 20:07:25,643 INFO L226 Difference]: Without dead ends: 155 [2022-11-02 20:07:25,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:07:25,649 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 220 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:07:25,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 312 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:07:25,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2022-11-02 20:07:25,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 81. [2022-11-02 20:07:25,699 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 20:07:25,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 117 transitions. [2022-11-02 20:07:25,702 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 117 transitions. Word has length 5 [2022-11-02 20:07:25,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:07:25,703 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 117 transitions. [2022-11-02 20:07:25,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:25,703 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 117 transitions. [2022-11-02 20:07:25,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 20:07:25,705 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:07:25,706 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 20:07:25,719 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-11-02 20:07:25,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:07:25,909 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:07:25,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:25,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1926009885, now seen corresponding path program 1 times [2022-11-02 20:07:25,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:07:25,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2011211891] [2022-11-02 20:07:25,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:25,912 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:07:25,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:07:25,913 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:07:25,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-02 20:07:26,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:26,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:07:26,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:07:26,194 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:07:26,195 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:07:26,195 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:07:26,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2011211891] [2022-11-02 20:07:26,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2011211891] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:07:26,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:07:26,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:07:26,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167493416] [2022-11-02 20:07:26,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:07:26,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:07:26,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:07:26,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:07:26,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:07:26,199 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 20:07:26,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:07:26,251 INFO L93 Difference]: Finished difference Result 307 states and 450 transitions. [2022-11-02 20:07:26,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:07:26,252 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 20:07:26,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:07:26,253 INFO L225 Difference]: With dead ends: 307 [2022-11-02 20:07:26,254 INFO L226 Difference]: Without dead ends: 230 [2022-11-02 20:07:26,254 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 20:07:26,255 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 20:07:26,256 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 20:07:26,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-02 20:07:26,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 83. [2022-11-02 20:07:26,263 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 20:07:26,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 119 transitions. [2022-11-02 20:07:26,264 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 119 transitions. Word has length 80 [2022-11-02 20:07:26,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:07:26,265 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 119 transitions. [2022-11-02 20:07:26,265 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 20:07:26,265 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 119 transitions. [2022-11-02 20:07:26,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 20:07:26,267 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:07:26,267 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:07:26,288 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:26,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:07:26,481 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:07:26,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:26,482 INFO L85 PathProgramCache]: Analyzing trace with hash -634852961, now seen corresponding path program 1 times [2022-11-02 20:07:26,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:07:26,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [852096870] [2022-11-02 20:07:26,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:26,483 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:07:26,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:07:26,485 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:07:26,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-02 20:07:26,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:26,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:07:26,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:07:26,830 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:07:26,830 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:07:26,830 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:07:26,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [852096870] [2022-11-02 20:07:26,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [852096870] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:07:26,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:07:26,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:07:26,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395504579] [2022-11-02 20:07:26,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:07:26,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:07:26,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:07:26,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:07:26,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:07:26,834 INFO L87 Difference]: Start difference. First operand 83 states and 119 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 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 20:07:27,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:07:27,013 INFO L93 Difference]: Finished difference Result 238 states and 346 transitions. [2022-11-02 20:07:27,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:07:27,014 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 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 20:07:27,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:07:27,015 INFO L225 Difference]: With dead ends: 238 [2022-11-02 20:07:27,016 INFO L226 Difference]: Without dead ends: 161 [2022-11-02 20:07:27,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:07:27,017 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 325 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:07:27,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 508 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:07:27,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2022-11-02 20:07:27,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 85. [2022-11-02 20:07:27,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.4404761904761905) internal successors, (121), 84 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 20:07:27,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 121 transitions. [2022-11-02 20:07:27,026 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 121 transitions. Word has length 80 [2022-11-02 20:07:27,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:07:27,026 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 121 transitions. [2022-11-02 20:07:27,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 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 20:07:27,027 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 121 transitions. [2022-11-02 20:07:27,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 20:07:27,029 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:07:27,029 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 20:07:27,043 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:27,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:07:27,239 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:07:27,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:27,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1276189597, now seen corresponding path program 1 times [2022-11-02 20:07:27,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:07:27,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1093601522] [2022-11-02 20:07:27,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:27,241 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:07:27,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:07:27,246 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:07:27,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-02 20:07:27,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:27,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:07:27,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:07:27,565 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:07:27,565 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:07:27,565 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:07:27,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1093601522] [2022-11-02 20:07:27,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1093601522] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:07:27,566 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:07:27,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:07:27,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46240060] [2022-11-02 20:07:27,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:07:27,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:07:27,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:07:27,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:07:27,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:07:27,573 INFO L87 Difference]: Start difference. First operand 85 states and 121 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 20:07:27,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:07:27,617 INFO L93 Difference]: Finished difference Result 307 states and 448 transitions. [2022-11-02 20:07:27,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:07:27,619 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 20:07:27,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:07:27,622 INFO L225 Difference]: With dead ends: 307 [2022-11-02 20:07:27,622 INFO L226 Difference]: Without dead ends: 230 [2022-11-02 20:07:27,627 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 20:07:27,628 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 312 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:07:27,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [312 Valid, 436 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:07:27,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-02 20:07:27,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 87. [2022-11-02 20:07:27,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 1.430232558139535) internal successors, (123), 86 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:27,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 123 transitions. [2022-11-02 20:07:27,636 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 123 transitions. Word has length 80 [2022-11-02 20:07:27,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:07:27,637 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 123 transitions. [2022-11-02 20:07:27,637 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 20:07:27,637 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 123 transitions. [2022-11-02 20:07:27,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 20:07:27,639 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:07:27,639 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 20:07:27,664 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:27,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:07:27,857 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:07:27,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:27,858 INFO L85 PathProgramCache]: Analyzing trace with hash 308838943, now seen corresponding path program 1 times [2022-11-02 20:07:27,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:07:27,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [634860434] [2022-11-02 20:07:27,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:27,860 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:07:27,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:07:27,861 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:07:27,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-02 20:07:28,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:28,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:07:28,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:07:28,152 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:07:28,152 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:07:28,152 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:07:28,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [634860434] [2022-11-02 20:07:28,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [634860434] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:07:28,153 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:07:28,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:07:28,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753243711] [2022-11-02 20:07:28,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:07:28,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:07:28,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:07:28,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:07:28,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:07:28,155 INFO L87 Difference]: Start difference. First operand 87 states and 123 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 20:07:28,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:07:28,190 INFO L93 Difference]: Finished difference Result 307 states and 447 transitions. [2022-11-02 20:07:28,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:07:28,190 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 20:07:28,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:07:28,192 INFO L225 Difference]: With dead ends: 307 [2022-11-02 20:07:28,192 INFO L226 Difference]: Without dead ends: 230 [2022-11-02 20:07:28,193 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 20:07:28,194 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 306 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:07:28,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 435 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:07:28,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-02 20:07:28,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 89. [2022-11-02 20:07:28,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 1.4204545454545454) internal successors, (125), 88 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:28,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 125 transitions. [2022-11-02 20:07:28,201 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 125 transitions. Word has length 80 [2022-11-02 20:07:28,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:07:28,201 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 125 transitions. [2022-11-02 20:07:28,202 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 20:07:28,202 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 125 transitions. [2022-11-02 20:07:28,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 20:07:28,203 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:07:28,203 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 20:07:28,222 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:28,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:07:28,417 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:07:28,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:28,418 INFO L85 PathProgramCache]: Analyzing trace with hash -183787231, now seen corresponding path program 1 times [2022-11-02 20:07:28,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:07:28,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [431268904] [2022-11-02 20:07:28,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:28,418 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:07:28,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:07:28,419 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:07:28,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-02 20:07:28,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:28,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:07:28,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:07:28,686 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:07:28,687 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:07:28,687 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:07:28,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [431268904] [2022-11-02 20:07:28,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [431268904] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:07:28,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:07:28,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:07:28,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586401343] [2022-11-02 20:07:28,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:07:28,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:07:28,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:07:28,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:07:28,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:07:28,690 INFO L87 Difference]: Start difference. First operand 89 states and 125 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 20:07:28,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:07:28,743 INFO L93 Difference]: Finished difference Result 307 states and 446 transitions. [2022-11-02 20:07:28,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:07:28,744 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 20:07:28,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:07:28,745 INFO L225 Difference]: With dead ends: 307 [2022-11-02 20:07:28,745 INFO L226 Difference]: Without dead ends: 230 [2022-11-02 20:07:28,746 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 20:07:28,747 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 300 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 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 20:07:28,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [300 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 20:07:28,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-02 20:07:28,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 91. [2022-11-02 20:07:28,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 1.4111111111111112) internal successors, (127), 90 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:28,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 127 transitions. [2022-11-02 20:07:28,755 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 127 transitions. Word has length 80 [2022-11-02 20:07:28,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:07:28,755 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 127 transitions. [2022-11-02 20:07:28,755 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 20:07:28,756 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 127 transitions. [2022-11-02 20:07:28,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 20:07:28,757 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:07:28,757 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 20:07:28,775 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-11-02 20:07:28,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:07:28,970 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:07:28,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:28,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1399940957, now seen corresponding path program 1 times [2022-11-02 20:07:28,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:07:28,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1702763267] [2022-11-02 20:07:28,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:28,972 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:07:28,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:07:28,974 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:07:28,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-02 20:07:29,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:29,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:07:29,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:07:29,241 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:07:29,241 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:07:29,241 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:07:29,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1702763267] [2022-11-02 20:07:29,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1702763267] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:07:29,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:07:29,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:07:29,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010583987] [2022-11-02 20:07:29,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:07:29,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:07:29,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:07:29,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:07:29,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:07:29,244 INFO L87 Difference]: Start difference. First operand 91 states and 127 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 20:07:29,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:07:29,278 INFO L93 Difference]: Finished difference Result 307 states and 445 transitions. [2022-11-02 20:07:29,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:07:29,279 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 20:07:29,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:07:29,280 INFO L225 Difference]: With dead ends: 307 [2022-11-02 20:07:29,280 INFO L226 Difference]: Without dead ends: 230 [2022-11-02 20:07:29,281 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 20:07:29,281 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 289 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 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 20:07:29,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [289 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 20:07:29,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-02 20:07:29,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 95. [2022-11-02 20:07:29,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.4042553191489362) internal successors, (132), 94 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:29,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 132 transitions. [2022-11-02 20:07:29,288 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 132 transitions. Word has length 80 [2022-11-02 20:07:29,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:07:29,288 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 132 transitions. [2022-11-02 20:07:29,289 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 20:07:29,289 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 132 transitions. [2022-11-02 20:07:29,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 20:07:29,290 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:07:29,290 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 20:07:29,304 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:29,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:07:29,504 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:07:29,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:29,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1817337563, now seen corresponding path program 1 times [2022-11-02 20:07:29,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:07:29,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1365409971] [2022-11-02 20:07:29,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:29,506 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:07:29,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:07:29,510 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:07:29,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-02 20:07:29,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:29,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:07:29,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:07:29,802 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:07:29,803 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:07:29,804 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:07:29,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1365409971] [2022-11-02 20:07:29,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1365409971] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:07:29,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:07:29,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:07:29,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206729944] [2022-11-02 20:07:29,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:07:29,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:07:29,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:07:29,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:07:29,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:07:29,808 INFO L87 Difference]: Start difference. First operand 95 states and 132 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 20:07:29,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:07:29,840 INFO L93 Difference]: Finished difference Result 307 states and 444 transitions. [2022-11-02 20:07:29,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:07:29,840 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 20:07:29,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:07:29,842 INFO L225 Difference]: With dead ends: 307 [2022-11-02 20:07:29,842 INFO L226 Difference]: Without dead ends: 230 [2022-11-02 20:07:29,842 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 20:07:29,845 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 283 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:07:29,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 432 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:07:29,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-02 20:07:29,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 97. [2022-11-02 20:07:29,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 1.3958333333333333) internal successors, (134), 96 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:29,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 134 transitions. [2022-11-02 20:07:29,856 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 134 transitions. Word has length 80 [2022-11-02 20:07:29,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:07:29,856 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 134 transitions. [2022-11-02 20:07:29,856 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 20:07:29,857 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 134 transitions. [2022-11-02 20:07:29,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 20:07:29,863 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:07:29,863 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 20:07:29,883 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:30,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:07:30,078 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:07:30,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:30,078 INFO L85 PathProgramCache]: Analyzing trace with hash 144237095, now seen corresponding path program 1 times [2022-11-02 20:07:30,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:07:30,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1630256707] [2022-11-02 20:07:30,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:30,079 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:07:30,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:07:30,080 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:07:30,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-02 20:07:30,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:30,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:07:30,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:07:30,487 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:07:30,487 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:07:30,488 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:07:30,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1630256707] [2022-11-02 20:07:30,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1630256707] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:07:30,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:07:30,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:07:30,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049588723] [2022-11-02 20:07:30,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:07:30,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:07:30,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:07:30,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:07:30,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:07:30,491 INFO L87 Difference]: Start difference. First operand 97 states and 134 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 20:07:30,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:07:30,594 INFO L93 Difference]: Finished difference Result 328 states and 472 transitions. [2022-11-02 20:07:30,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:07:30,595 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 20:07:30,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:07:30,597 INFO L225 Difference]: With dead ends: 328 [2022-11-02 20:07:30,597 INFO L226 Difference]: Without dead ends: 251 [2022-11-02 20:07:30,598 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 20:07:30,601 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 413 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:07:30,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 637 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:07:30,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2022-11-02 20:07:30,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 101. [2022-11-02 20:07:30,611 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 20:07:30,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 139 transitions. [2022-11-02 20:07:30,612 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 139 transitions. Word has length 80 [2022-11-02 20:07:30,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:07:30,612 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 139 transitions. [2022-11-02 20:07:30,612 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 20:07:30,613 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 139 transitions. [2022-11-02 20:07:30,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 20:07:30,613 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:07:30,614 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 20:07:30,635 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2022-11-02 20:07:30,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:07:30,828 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:07:30,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:30,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1405154345, now seen corresponding path program 1 times [2022-11-02 20:07:30,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:07:30,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1630872593] [2022-11-02 20:07:30,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:30,829 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:07:30,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:07:30,830 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:07:30,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-02 20:07:31,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:31,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:07:31,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:07:31,112 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:07:31,113 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:07:31,113 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:07:31,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1630872593] [2022-11-02 20:07:31,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1630872593] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:07:31,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:07:31,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:07:31,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536572795] [2022-11-02 20:07:31,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:07:31,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:07:31,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:07:31,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:07:31,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:07:31,115 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 20:07:31,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:07:31,192 INFO L93 Difference]: Finished difference Result 307 states and 442 transitions. [2022-11-02 20:07:31,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:07:31,193 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 20:07:31,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:07:31,194 INFO L225 Difference]: With dead ends: 307 [2022-11-02 20:07:31,194 INFO L226 Difference]: Without dead ends: 230 [2022-11-02 20:07:31,195 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 20:07:31,195 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 266 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 409 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 20:07:31,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 409 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:07:31,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-02 20:07:31,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 103. [2022-11-02 20:07:31,199 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 20:07:31,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 141 transitions. [2022-11-02 20:07:31,200 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 141 transitions. Word has length 80 [2022-11-02 20:07:31,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:07:31,200 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 141 transitions. [2022-11-02 20:07:31,200 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 20:07:31,201 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 141 transitions. [2022-11-02 20:07:31,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 20:07:31,201 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:07:31,201 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 20:07:31,222 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:31,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:07:31,425 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:07:31,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:31,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1503027541, now seen corresponding path program 1 times [2022-11-02 20:07:31,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:07:31,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1251164852] [2022-11-02 20:07:31,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:31,426 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:07:31,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:07:31,427 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:07:31,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-02 20:07:31,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:31,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:07:31,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:07:31,867 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 20:07:31,867 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:07:31,867 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:07:31,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1251164852] [2022-11-02 20:07:31,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1251164852] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:07:31,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:07:31,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:07:31,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565138717] [2022-11-02 20:07:31,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:07:31,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:07:31,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:07:31,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:07:31,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:07:31,869 INFO L87 Difference]: Start difference. First operand 103 states and 141 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 20:07:31,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:07:31,960 INFO L93 Difference]: Finished difference Result 328 states and 470 transitions. [2022-11-02 20:07:31,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:07:31,961 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 20:07:31,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:07:31,962 INFO L225 Difference]: With dead ends: 328 [2022-11-02 20:07:31,963 INFO L226 Difference]: Without dead ends: 251 [2022-11-02 20:07:31,963 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 20:07:31,964 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 399 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 629 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:07:31,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [399 Valid, 629 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:07:31,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2022-11-02 20:07:31,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 105. [2022-11-02 20:07:31,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 104 states have (on average 1.375) internal successors, (143), 104 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:31,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 143 transitions. [2022-11-02 20:07:31,968 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 143 transitions. Word has length 80 [2022-11-02 20:07:31,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:07:31,969 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 143 transitions. [2022-11-02 20:07:31,969 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 20:07:31,969 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 143 transitions. [2022-11-02 20:07:31,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 20:07:31,970 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:07:31,970 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 20:07:31,988 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:32,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:07:32,171 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:07:32,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:32,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1059126867, now seen corresponding path program 1 times [2022-11-02 20:07:32,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:07:32,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [424583704] [2022-11-02 20:07:32,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:32,172 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:07:32,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:07:32,173 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:07:32,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-02 20:07:32,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:32,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:07:32,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:07:32,449 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:07:32,449 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:07:32,449 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:07:32,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [424583704] [2022-11-02 20:07:32,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [424583704] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:07:32,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:07:32,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:07:32,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254988576] [2022-11-02 20:07:32,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:07:32,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:07:32,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:07:32,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:07:32,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:07:32,452 INFO L87 Difference]: Start difference. First operand 105 states and 143 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 20:07:32,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:07:32,517 INFO L93 Difference]: Finished difference Result 307 states and 440 transitions. [2022-11-02 20:07:32,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:07:32,518 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 20:07:32,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:07:32,519 INFO L225 Difference]: With dead ends: 307 [2022-11-02 20:07:32,519 INFO L226 Difference]: Without dead ends: 230 [2022-11-02 20:07:32,519 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 20:07:32,520 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 254 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 407 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 20:07:32,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 407 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:07:32,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-02 20:07:32,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 107. [2022-11-02 20:07:32,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 106 states have (on average 1.3679245283018868) internal successors, (145), 106 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:32,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 145 transitions. [2022-11-02 20:07:32,525 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 145 transitions. Word has length 80 [2022-11-02 20:07:32,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:07:32,525 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 145 transitions. [2022-11-02 20:07:32,526 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 20:07:32,526 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 145 transitions. [2022-11-02 20:07:32,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 20:07:32,527 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:07:32,527 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 20:07:32,550 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:32,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:07:32,739 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:07:32,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:32,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1207254319, now seen corresponding path program 1 times [2022-11-02 20:07:32,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:07:32,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [269513457] [2022-11-02 20:07:32,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:32,740 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:07:32,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:07:32,741 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:07:32,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-02 20:07:32,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:32,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:07:32,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:07:33,014 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:07:33,014 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:07:33,014 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:07:33,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [269513457] [2022-11-02 20:07:33,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [269513457] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:07:33,015 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:07:33,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:07:33,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574567158] [2022-11-02 20:07:33,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:07:33,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:07:33,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:07:33,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:07:33,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:07:33,017 INFO L87 Difference]: Start difference. First operand 107 states and 145 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 20:07:33,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:07:33,087 INFO L93 Difference]: Finished difference Result 307 states and 439 transitions. [2022-11-02 20:07:33,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:07:33,088 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 20:07:33,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:07:33,089 INFO L225 Difference]: With dead ends: 307 [2022-11-02 20:07:33,089 INFO L226 Difference]: Without dead ends: 230 [2022-11-02 20:07:33,090 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 20:07:33,090 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 248 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 406 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 20:07:33,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 406 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:07:33,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-02 20:07:33,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 109. [2022-11-02 20:07:33,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 1.3611111111111112) internal successors, (147), 108 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:33,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 147 transitions. [2022-11-02 20:07:33,095 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 147 transitions. Word has length 80 [2022-11-02 20:07:33,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:07:33,096 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 147 transitions. [2022-11-02 20:07:33,096 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 20:07:33,096 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 147 transitions. [2022-11-02 20:07:33,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 20:07:33,097 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:07:33,097 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 20:07:33,118 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2022-11-02 20:07:33,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:07:33,298 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:07:33,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:33,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1191735601, now seen corresponding path program 1 times [2022-11-02 20:07:33,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:07:33,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1978192580] [2022-11-02 20:07:33,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:33,299 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:07:33,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:07:33,300 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:07:33,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-02 20:07:33,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:33,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:07:33,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:07:33,591 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:07:33,591 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:07:33,591 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:07:33,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1978192580] [2022-11-02 20:07:33,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1978192580] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:07:33,592 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:07:33,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:07:33,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864942860] [2022-11-02 20:07:33,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:07:33,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:07:33,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:07:33,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:07:33,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:07:33,594 INFO L87 Difference]: Start difference. First operand 109 states and 147 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 20:07:33,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:07:33,629 INFO L93 Difference]: Finished difference Result 307 states and 438 transitions. [2022-11-02 20:07:33,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:07:33,630 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 20:07:33,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:07:33,631 INFO L225 Difference]: With dead ends: 307 [2022-11-02 20:07:33,631 INFO L226 Difference]: Without dead ends: 230 [2022-11-02 20:07:33,632 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 20:07:33,632 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 242 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:07:33,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 429 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:07:33,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-02 20:07:33,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 111. [2022-11-02 20:07:33,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 110 states have (on average 1.3545454545454545) internal successors, (149), 110 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:33,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 149 transitions. [2022-11-02 20:07:33,637 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 149 transitions. Word has length 80 [2022-11-02 20:07:33,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:07:33,637 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 149 transitions. [2022-11-02 20:07:33,638 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 20:07:33,638 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 149 transitions. [2022-11-02 20:07:33,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 20:07:33,639 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:07:33,639 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 20:07:33,660 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2022-11-02 20:07:33,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:07:33,860 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:07:33,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:33,860 INFO L85 PathProgramCache]: Analyzing trace with hash 838647219, now seen corresponding path program 1 times [2022-11-02 20:07:33,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:07:33,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [891405286] [2022-11-02 20:07:33,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:33,861 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:07:33,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:07:33,862 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:07:33,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-02 20:07:34,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:34,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:07:34,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:07:34,128 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:07:34,128 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:07:34,128 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:07:34,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [891405286] [2022-11-02 20:07:34,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [891405286] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:07:34,129 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:07:34,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:07:34,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111537590] [2022-11-02 20:07:34,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:07:34,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:07:34,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:07:34,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:07:34,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:07:34,131 INFO L87 Difference]: Start difference. First operand 111 states and 149 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 20:07:34,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:07:34,162 INFO L93 Difference]: Finished difference Result 307 states and 437 transitions. [2022-11-02 20:07:34,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:07:34,163 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 20:07:34,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:07:34,164 INFO L225 Difference]: With dead ends: 307 [2022-11-02 20:07:34,164 INFO L226 Difference]: Without dead ends: 230 [2022-11-02 20:07:34,164 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 20:07:34,165 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 236 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:07:34,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 428 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:07:34,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-02 20:07:34,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 113. [2022-11-02 20:07:34,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 1.3482142857142858) internal successors, (151), 112 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:34,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 151 transitions. [2022-11-02 20:07:34,170 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 151 transitions. Word has length 80 [2022-11-02 20:07:34,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:07:34,170 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 151 transitions. [2022-11-02 20:07:34,171 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 20:07:34,171 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 151 transitions. [2022-11-02 20:07:34,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 20:07:34,171 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:07:34,172 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 20:07:34,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:34,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:07:34,387 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:07:34,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:34,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1732133557, now seen corresponding path program 1 times [2022-11-02 20:07:34,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:07:34,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1147966246] [2022-11-02 20:07:34,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:34,389 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:07:34,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:07:34,390 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:07:34,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-02 20:07:34,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:34,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:07:34,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:07:34,697 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:07:34,697 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:07:34,697 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:07:34,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1147966246] [2022-11-02 20:07:34,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1147966246] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:07:34,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:07:34,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:07:34,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426640816] [2022-11-02 20:07:34,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:07:34,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:07:34,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:07:34,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:07:34,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:07:34,699 INFO L87 Difference]: Start difference. First operand 113 states and 151 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 20:07:34,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:07:34,737 INFO L93 Difference]: Finished difference Result 307 states and 436 transitions. [2022-11-02 20:07:34,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:07:34,738 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 20:07:34,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:07:34,739 INFO L225 Difference]: With dead ends: 307 [2022-11-02 20:07:34,739 INFO L226 Difference]: Without dead ends: 230 [2022-11-02 20:07:34,740 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 20:07:34,740 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 220 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:07:34,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 424 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:07:34,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-02 20:07:34,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 119. [2022-11-02 20:07:34,744 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 20:07:34,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 159 transitions. [2022-11-02 20:07:34,745 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 159 transitions. Word has length 80 [2022-11-02 20:07:34,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:07:34,745 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 159 transitions. [2022-11-02 20:07:34,745 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 20:07:34,745 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 159 transitions. [2022-11-02 20:07:34,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 20:07:34,746 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:07:34,746 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 20:07:34,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:34,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:07:34,957 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:07:34,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:34,957 INFO L85 PathProgramCache]: Analyzing trace with hash -113233609, now seen corresponding path program 1 times [2022-11-02 20:07:34,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:07:34,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1427612747] [2022-11-02 20:07:34,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:34,958 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:07:34,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:07:34,959 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:07:34,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-02 20:07:35,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:35,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:07:35,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:07:35,230 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:07:35,230 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:07:35,230 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:07:35,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1427612747] [2022-11-02 20:07:35,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1427612747] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:07:35,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:07:35,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:07:35,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021398574] [2022-11-02 20:07:35,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:07:35,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:07:35,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:07:35,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:07:35,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:07:35,232 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 20:07:35,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:07:35,278 INFO L93 Difference]: Finished difference Result 307 states and 435 transitions. [2022-11-02 20:07:35,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:07:35,279 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 20:07:35,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:07:35,280 INFO L225 Difference]: With dead ends: 307 [2022-11-02 20:07:35,280 INFO L226 Difference]: Without dead ends: 230 [2022-11-02 20:07:35,281 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 20:07:35,281 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 209 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 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 20:07:35,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 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 20:07:35,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-02 20:07:35,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 123. [2022-11-02 20:07:35,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 122 states have (on average 1.3442622950819672) internal successors, (164), 122 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:35,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 164 transitions. [2022-11-02 20:07:35,287 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 164 transitions. Word has length 80 [2022-11-02 20:07:35,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:07:35,287 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 164 transitions. [2022-11-02 20:07:35,287 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 20:07:35,287 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 164 transitions. [2022-11-02 20:07:35,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 20:07:35,288 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:07:35,288 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 20:07:35,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:35,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:07:35,502 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:07:35,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:35,502 INFO L85 PathProgramCache]: Analyzing trace with hash -957239111, now seen corresponding path program 1 times [2022-11-02 20:07:35,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:07:35,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1022825894] [2022-11-02 20:07:35,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:35,503 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:07:35,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:07:35,504 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:07:35,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-02 20:07:35,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:35,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:07:35,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:07:35,792 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:07:35,792 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:07:35,792 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:07:35,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1022825894] [2022-11-02 20:07:35,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1022825894] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:07:35,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:07:35,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:07:35,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710258868] [2022-11-02 20:07:35,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:07:35,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:07:35,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:07:35,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:07:35,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:07:35,795 INFO L87 Difference]: Start difference. First operand 123 states and 164 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 20:07:35,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:07:35,831 INFO L93 Difference]: Finished difference Result 307 states and 434 transitions. [2022-11-02 20:07:35,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:07:35,832 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 20:07:35,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:07:35,833 INFO L225 Difference]: With dead ends: 307 [2022-11-02 20:07:35,833 INFO L226 Difference]: Without dead ends: 230 [2022-11-02 20:07:35,834 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 20:07:35,834 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 203 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:07:35,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 422 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:07:35,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-02 20:07:35,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 125. [2022-11-02 20:07:35,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 124 states have (on average 1.3387096774193548) internal successors, (166), 124 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:35,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 166 transitions. [2022-11-02 20:07:35,839 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 166 transitions. Word has length 80 [2022-11-02 20:07:35,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:07:35,840 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 166 transitions. [2022-11-02 20:07:35,840 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 20:07:35,840 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 166 transitions. [2022-11-02 20:07:35,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 20:07:35,841 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:07:35,841 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 20:07:35,860 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:36,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:07:36,060 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:07:36,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:36,061 INFO L85 PathProgramCache]: Analyzing trace with hash -1029625669, now seen corresponding path program 1 times [2022-11-02 20:07:36,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:07:36,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1885929640] [2022-11-02 20:07:36,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:36,061 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:07:36,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:07:36,062 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:07:36,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-02 20:07:36,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:36,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:07:36,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:07:36,343 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:07:36,343 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:07:36,344 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:07:36,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1885929640] [2022-11-02 20:07:36,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1885929640] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:07:36,344 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:07:36,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:07:36,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358069588] [2022-11-02 20:07:36,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:07:36,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:07:36,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:07:36,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:07:36,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:07:36,346 INFO L87 Difference]: Start difference. First operand 125 states and 166 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 20:07:36,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:07:36,388 INFO L93 Difference]: Finished difference Result 307 states and 433 transitions. [2022-11-02 20:07:36,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:07:36,389 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 20:07:36,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:07:36,390 INFO L225 Difference]: With dead ends: 307 [2022-11-02 20:07:36,390 INFO L226 Difference]: Without dead ends: 230 [2022-11-02 20:07:36,391 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 20:07:36,391 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 192 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:07:36,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 415 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:07:36,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-02 20:07:36,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 129. [2022-11-02 20:07:36,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 128 states have (on average 1.3359375) internal successors, (171), 128 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:36,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 171 transitions. [2022-11-02 20:07:36,396 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 171 transitions. Word has length 80 [2022-11-02 20:07:36,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:07:36,396 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 171 transitions. [2022-11-02 20:07:36,397 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 20:07:36,397 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 171 transitions. [2022-11-02 20:07:36,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 20:07:36,398 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:07:36,398 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 20:07:36,415 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:36,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:07:36,611 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:07:36,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:36,611 INFO L85 PathProgramCache]: Analyzing trace with hash 356577725, now seen corresponding path program 1 times [2022-11-02 20:07:36,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:07:36,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1240252280] [2022-11-02 20:07:36,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:36,612 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:07:36,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:07:36,613 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:07:36,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-02 20:07:36,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:36,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:07:36,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:07:37,011 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:07:37,012 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:07:37,012 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:07:37,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1240252280] [2022-11-02 20:07:37,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1240252280] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:07:37,012 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:07:37,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:07:37,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329613511] [2022-11-02 20:07:37,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:07:37,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:07:37,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:07:37,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:07:37,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:07:37,013 INFO L87 Difference]: Start difference. First operand 129 states and 171 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 20:07:37,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:07:37,102 INFO L93 Difference]: Finished difference Result 328 states and 461 transitions. [2022-11-02 20:07:37,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:07:37,102 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 20:07:37,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:07:37,105 INFO L225 Difference]: With dead ends: 328 [2022-11-02 20:07:37,105 INFO L226 Difference]: Without dead ends: 251 [2022-11-02 20:07:37,105 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 20:07:37,106 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 311 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:07:37,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [311 Valid, 578 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:07:37,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2022-11-02 20:07:37,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 133. [2022-11-02 20:07:37,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 1.3333333333333333) internal successors, (176), 132 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 20:07:37,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 176 transitions. [2022-11-02 20:07:37,114 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 176 transitions. Word has length 80 [2022-11-02 20:07:37,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:07:37,116 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 176 transitions. [2022-11-02 20:07:37,116 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 20:07:37,116 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 176 transitions. [2022-11-02 20:07:37,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 20:07:37,117 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:07:37,117 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 20:07:37,139 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:37,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:07:37,339 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:07:37,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:37,340 INFO L85 PathProgramCache]: Analyzing trace with hash 497126335, now seen corresponding path program 1 times [2022-11-02 20:07:37,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:07:37,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2012828011] [2022-11-02 20:07:37,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:37,341 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:07:37,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:07:37,342 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:07:37,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-02 20:07:37,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:37,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:07:37,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:07:37,645 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:07:37,645 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:07:37,645 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:07:37,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2012828011] [2022-11-02 20:07:37,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2012828011] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:07:37,646 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:07:37,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:07:37,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784233218] [2022-11-02 20:07:37,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:07:37,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:07:37,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:07:37,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:07:37,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:07:37,648 INFO L87 Difference]: Start difference. First operand 133 states and 176 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 20:07:37,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:07:37,713 INFO L93 Difference]: Finished difference Result 307 states and 431 transitions. [2022-11-02 20:07:37,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:07:37,714 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 20:07:37,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:07:37,715 INFO L225 Difference]: With dead ends: 307 [2022-11-02 20:07:37,715 INFO L226 Difference]: Without dead ends: 230 [2022-11-02 20:07:37,715 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 20:07:37,716 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 175 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 398 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 20:07:37,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 398 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:07:37,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-02 20:07:37,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 135. [2022-11-02 20:07:37,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 134 states have (on average 1.328358208955224) internal successors, (178), 134 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:37,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 178 transitions. [2022-11-02 20:07:37,721 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 178 transitions. Word has length 80 [2022-11-02 20:07:37,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:07:37,722 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 178 transitions. [2022-11-02 20:07:37,722 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 20:07:37,722 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 178 transitions. [2022-11-02 20:07:37,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 20:07:37,723 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:07:37,723 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 20:07:37,739 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:37,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:07:37,939 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:07:37,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:37,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1308311999, now seen corresponding path program 1 times [2022-11-02 20:07:37,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:07:37,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1856135933] [2022-11-02 20:07:37,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:37,941 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:07:37,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:07:37,942 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:07:37,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-02 20:07:38,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:38,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:07:38,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:07:38,389 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:07:38,390 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:07:38,390 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:07:38,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1856135933] [2022-11-02 20:07:38,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1856135933] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:07:38,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:07:38,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:07:38,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638062737] [2022-11-02 20:07:38,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:07:38,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:07:38,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:07:38,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:07:38,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:07:38,392 INFO L87 Difference]: Start difference. First operand 135 states and 178 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 20:07:38,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:07:38,473 INFO L93 Difference]: Finished difference Result 328 states and 459 transitions. [2022-11-02 20:07:38,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:07:38,476 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 20:07:38,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:07:38,478 INFO L225 Difference]: With dead ends: 328 [2022-11-02 20:07:38,478 INFO L226 Difference]: Without dead ends: 251 [2022-11-02 20:07:38,478 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 20:07:38,479 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 297 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:07:38,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 570 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:07:38,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2022-11-02 20:07:38,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 137. [2022-11-02 20:07:38,482 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 20:07:38,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 180 transitions. [2022-11-02 20:07:38,483 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 180 transitions. Word has length 80 [2022-11-02 20:07:38,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:07:38,483 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 180 transitions. [2022-11-02 20:07:38,483 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 20:07:38,483 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 180 transitions. [2022-11-02 20:07:38,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 20:07:38,484 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:07:38,484 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:07:38,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:38,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:07:38,697 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:07:38,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:38,698 INFO L85 PathProgramCache]: Analyzing trace with hash -885610173, now seen corresponding path program 1 times [2022-11-02 20:07:38,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:07:38,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1867987857] [2022-11-02 20:07:38,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:38,699 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:07:38,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:07:38,700 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:07:38,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-02 20:07:38,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:38,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:07:38,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:07:39,017 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:07:39,017 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:07:39,018 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:07:39,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1867987857] [2022-11-02 20:07:39,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1867987857] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:07:39,018 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:07:39,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:07:39,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574047197] [2022-11-02 20:07:39,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:07:39,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:07:39,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:07:39,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:07:39,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:07:39,020 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 20:07:39,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:07:39,081 INFO L93 Difference]: Finished difference Result 307 states and 429 transitions. [2022-11-02 20:07:39,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:07:39,082 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 20:07:39,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:07:39,083 INFO L225 Difference]: With dead ends: 307 [2022-11-02 20:07:39,083 INFO L226 Difference]: Without dead ends: 230 [2022-11-02 20:07:39,083 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 20:07:39,084 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 163 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:07:39,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 396 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:07:39,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-02 20:07:39,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 139. [2022-11-02 20:07:39,089 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 20:07:39,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 182 transitions. [2022-11-02 20:07:39,089 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 182 transitions. Word has length 80 [2022-11-02 20:07:39,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:07:39,090 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 182 transitions. [2022-11-02 20:07:39,090 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 20:07:39,090 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 182 transitions. [2022-11-02 20:07:39,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 20:07:39,091 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:07:39,091 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 20:07:39,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:39,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:07:39,304 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:07:39,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:39,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1720413381, now seen corresponding path program 1 times [2022-11-02 20:07:39,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:07:39,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1919775052] [2022-11-02 20:07:39,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:39,305 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:07:39,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:07:39,306 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:07:39,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-02 20:07:39,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:39,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:07:39,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:07:39,616 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:07:39,616 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:07:39,617 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:07:39,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1919775052] [2022-11-02 20:07:39,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1919775052] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:07:39,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:07:39,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:07:39,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572437382] [2022-11-02 20:07:39,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:07:39,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:07:39,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:07:39,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:07:39,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:07:39,619 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 20:07:39,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:07:39,680 INFO L93 Difference]: Finished difference Result 307 states and 428 transitions. [2022-11-02 20:07:39,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:07:39,681 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 20:07:39,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:07:39,682 INFO L225 Difference]: With dead ends: 307 [2022-11-02 20:07:39,682 INFO L226 Difference]: Without dead ends: 230 [2022-11-02 20:07:39,682 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 20:07:39,683 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 157 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:07:39,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 395 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:07:39,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-02 20:07:39,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 141. [2022-11-02 20:07:39,687 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 20:07:39,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 184 transitions. [2022-11-02 20:07:39,688 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 184 transitions. Word has length 80 [2022-11-02 20:07:39,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:07:39,689 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 184 transitions. [2022-11-02 20:07:39,689 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 20:07:39,689 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 184 transitions. [2022-11-02 20:07:39,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 20:07:39,689 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:07:39,690 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 20:07:39,702 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (25)] Ended with exit code 0 [2022-11-02 20:07:39,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:07:39,902 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:07:39,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:39,903 INFO L85 PathProgramCache]: Analyzing trace with hash 132065479, now seen corresponding path program 1 times [2022-11-02 20:07:39,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:07:39,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1646156019] [2022-11-02 20:07:39,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:39,903 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:07:39,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:07:39,905 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:07:39,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-02 20:07:40,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:40,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:07:40,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:07:40,189 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:07:40,190 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:07:40,190 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:07:40,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1646156019] [2022-11-02 20:07:40,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1646156019] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:07:40,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:07:40,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:07:40,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504143131] [2022-11-02 20:07:40,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:07:40,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:07:40,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:07:40,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:07:40,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:07:40,192 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 20:07:40,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:07:40,234 INFO L93 Difference]: Finished difference Result 307 states and 427 transitions. [2022-11-02 20:07:40,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:07:40,235 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 20:07:40,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:07:40,236 INFO L225 Difference]: With dead ends: 307 [2022-11-02 20:07:40,236 INFO L226 Difference]: Without dead ends: 230 [2022-11-02 20:07:40,236 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 20:07:40,237 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 151 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:07:40,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 409 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:07:40,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-02 20:07:40,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 143. [2022-11-02 20:07:40,241 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 20:07:40,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 186 transitions. [2022-11-02 20:07:40,241 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 186 transitions. Word has length 80 [2022-11-02 20:07:40,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:07:40,241 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 186 transitions. [2022-11-02 20:07:40,242 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 20:07:40,242 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 186 transitions. [2022-11-02 20:07:40,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 20:07:40,242 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:07:40,242 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 20:07:40,265 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:40,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:07:40,443 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:07:40,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:40,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1147798199, now seen corresponding path program 1 times [2022-11-02 20:07:40,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:07:40,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1947753603] [2022-11-02 20:07:40,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:40,444 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:07:40,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:07:40,445 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:07:40,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-02 20:07:40,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:40,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:07:40,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:07:40,737 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:07:40,738 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:07:40,738 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:07:40,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1947753603] [2022-11-02 20:07:40,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1947753603] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:07:40,738 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:07:40,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:07:40,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807181303] [2022-11-02 20:07:40,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:07:40,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:07:40,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:07:40,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:07:40,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:07:40,741 INFO L87 Difference]: Start difference. First operand 143 states and 186 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 20:07:40,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:07:40,768 INFO L93 Difference]: Finished difference Result 307 states and 426 transitions. [2022-11-02 20:07:40,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:07:40,769 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 20:07:40,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:07:40,770 INFO L225 Difference]: With dead ends: 307 [2022-11-02 20:07:40,770 INFO L226 Difference]: Without dead ends: 230 [2022-11-02 20:07:40,770 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 20:07:40,774 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 145 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:07:40,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 417 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:07:40,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-02 20:07:40,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 145. [2022-11-02 20:07:40,792 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 20:07:40,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 188 transitions. [2022-11-02 20:07:40,793 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 188 transitions. Word has length 80 [2022-11-02 20:07:40,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:07:40,793 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 188 transitions. [2022-11-02 20:07:40,794 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 20:07:40,794 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 188 transitions. [2022-11-02 20:07:40,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 20:07:40,795 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:07:40,795 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 20:07:40,808 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:41,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:07:41,008 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:07:41,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:41,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1734604213, now seen corresponding path program 1 times [2022-11-02 20:07:41,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:07:41,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [927165605] [2022-11-02 20:07:41,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:41,009 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:07:41,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:07:41,010 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:07:41,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-02 20:07:41,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:41,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:07:41,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:07:41,309 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:07:41,309 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:07:41,309 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:07:41,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [927165605] [2022-11-02 20:07:41,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [927165605] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:07:41,310 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:07:41,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:07:41,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579069864] [2022-11-02 20:07:41,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:07:41,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:07:41,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:07:41,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:07:41,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:07:41,311 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 20:07:41,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:07:41,350 INFO L93 Difference]: Finished difference Result 307 states and 425 transitions. [2022-11-02 20:07:41,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:07:41,350 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 20:07:41,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:07:41,352 INFO L225 Difference]: With dead ends: 307 [2022-11-02 20:07:41,352 INFO L226 Difference]: Without dead ends: 230 [2022-11-02 20:07:41,352 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 20:07:41,352 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 139 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:07:41,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 413 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:07:41,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-02 20:07:41,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 147. [2022-11-02 20:07:41,356 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 20:07:41,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 190 transitions. [2022-11-02 20:07:41,357 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 190 transitions. Word has length 80 [2022-11-02 20:07:41,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:07:41,357 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 190 transitions. [2022-11-02 20:07:41,357 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 20:07:41,358 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 190 transitions. [2022-11-02 20:07:41,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 20:07:41,358 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:07:41,358 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 20:07:41,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:41,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:07:41,561 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:07:41,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:41,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1033539635, now seen corresponding path program 1 times [2022-11-02 20:07:41,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:07:41,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1385800105] [2022-11-02 20:07:41,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:41,562 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:07:41,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:07:41,563 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:07:41,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-02 20:07:41,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:41,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:07:41,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:07:41,881 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 20:07:41,881 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:07:41,882 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:07:41,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1385800105] [2022-11-02 20:07:41,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1385800105] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:07:41,882 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:07:41,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:07:41,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138072957] [2022-11-02 20:07:41,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:07:41,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:07:41,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:07:41,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:07:41,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:07:41,884 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 20:07:41,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:07:41,939 INFO L93 Difference]: Finished difference Result 307 states and 424 transitions. [2022-11-02 20:07:41,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:07:41,940 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 20:07:41,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:07:41,941 INFO L225 Difference]: With dead ends: 307 [2022-11-02 20:07:41,941 INFO L226 Difference]: Without dead ends: 230 [2022-11-02 20:07:41,941 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 20:07:41,942 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 128 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:07:41,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 391 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:07:41,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-02 20:07:41,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 151. [2022-11-02 20:07:41,946 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 20:07:41,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 195 transitions. [2022-11-02 20:07:41,947 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 195 transitions. Word has length 80 [2022-11-02 20:07:41,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:07:41,947 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 195 transitions. [2022-11-02 20:07:41,947 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 20:07:41,947 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 195 transitions. [2022-11-02 20:07:41,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 20:07:41,948 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:07:41,948 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 20:07:41,961 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:42,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:07:42,161 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:07:42,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:42,161 INFO L85 PathProgramCache]: Analyzing trace with hash 741467727, now seen corresponding path program 1 times [2022-11-02 20:07:42,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:07:42,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1209316192] [2022-11-02 20:07:42,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:42,162 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:07:42,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:07:42,163 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:07:42,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-11-02 20:07:42,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:42,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:07:42,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:07:42,473 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:07:42,474 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:07:42,474 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:07:42,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1209316192] [2022-11-02 20:07:42,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1209316192] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:07:42,474 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:07:42,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:07:42,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792291337] [2022-11-02 20:07:42,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:07:42,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:07:42,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:07:42,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:07:42,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:07:42,476 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 20:07:42,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:07:42,533 INFO L93 Difference]: Finished difference Result 307 states and 423 transitions. [2022-11-02 20:07:42,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:07:42,533 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 20:07:42,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:07:42,534 INFO L225 Difference]: With dead ends: 307 [2022-11-02 20:07:42,535 INFO L226 Difference]: Without dead ends: 230 [2022-11-02 20:07:42,535 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 20:07:42,536 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 122 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:07:42,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 390 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:07:42,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-02 20:07:42,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 153. [2022-11-02 20:07:42,540 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 20:07:42,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 197 transitions. [2022-11-02 20:07:42,540 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 197 transitions. Word has length 80 [2022-11-02 20:07:42,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:07:42,541 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 197 transitions. [2022-11-02 20:07:42,541 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 20:07:42,541 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 197 transitions. [2022-11-02 20:07:42,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 20:07:42,542 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:07:42,542 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 20:07:42,555 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:42,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:07:42,755 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:07:42,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:42,755 INFO L85 PathProgramCache]: Analyzing trace with hash 743314769, now seen corresponding path program 1 times [2022-11-02 20:07:42,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:07:42,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1021209199] [2022-11-02 20:07:42,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:42,757 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:07:42,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:07:42,757 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:07:42,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-11-02 20:07:42,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:42,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-02 20:07:42,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:07:43,484 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:07:43,485 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:07:44,938 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:07:44,938 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:07:44,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1021209199] [2022-11-02 20:07:44,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1021209199] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:07:44,939 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:07:44,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-11-02 20:07:44,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944081650] [2022-11-02 20:07:44,939 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:07:44,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 20:07:44,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:07:44,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 20:07:44,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:07:44,941 INFO L87 Difference]: Start difference. First operand 153 states and 197 transitions. Second operand has 14 states, 14 states have (on average 11.285714285714286) internal successors, (158), 14 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:45,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:07:45,393 INFO L93 Difference]: Finished difference Result 322 states and 446 transitions. [2022-11-02 20:07:45,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 20:07:45,394 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 11.285714285714286) internal successors, (158), 14 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 20:07:45,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:07:45,395 INFO L225 Difference]: With dead ends: 322 [2022-11-02 20:07:45,395 INFO L226 Difference]: Without dead ends: 320 [2022-11-02 20:07:45,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=154, Invalid=398, Unknown=0, NotChecked=0, Total=552 [2022-11-02 20:07:45,397 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 829 mSDsluCounter, 848 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 829 SdHoareTripleChecker+Valid, 1060 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 107 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:07:45,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [829 Valid, 1060 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 120 Invalid, 0 Unknown, 107 Unchecked, 0.2s Time] [2022-11-02 20:07:45,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2022-11-02 20:07:45,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 200. [2022-11-02 20:07:45,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 199 states have (on average 1.3366834170854272) internal successors, (266), 199 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:45,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 266 transitions. [2022-11-02 20:07:45,404 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 266 transitions. Word has length 80 [2022-11-02 20:07:45,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:07:45,405 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 266 transitions. [2022-11-02 20:07:45,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 11.285714285714286) internal successors, (158), 14 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:45,405 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 266 transitions. [2022-11-02 20:07:45,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-11-02 20:07:45,406 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:07:45,406 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 20:07:45,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:45,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:07:45,619 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:07:45,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:45,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1759749547, now seen corresponding path program 1 times [2022-11-02 20:07:45,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:07:45,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1020252157] [2022-11-02 20:07:45,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:45,620 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:07:45,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:07:45,621 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:07:45,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-11-02 20:07:45,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:45,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 752 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:07:45,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:07:46,160 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 75 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:07:46,160 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:07:46,348 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 75 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:07:46,349 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:07:46,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1020252157] [2022-11-02 20:07:46,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1020252157] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:07:46,349 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:07:46,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-11-02 20:07:46,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329930743] [2022-11-02 20:07:46,349 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:07:46,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:07:46,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:07:46,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:07:46,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:07:46,351 INFO L87 Difference]: Start difference. First operand 200 states and 266 transitions. Second operand has 11 states, 11 states have (on average 17.0) internal successors, (187), 11 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:46,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:07:46,830 INFO L93 Difference]: Finished difference Result 566 states and 805 transitions. [2022-11-02 20:07:46,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 20:07:46,831 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 17.0) internal successors, (187), 11 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2022-11-02 20:07:46,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:07:46,833 INFO L225 Difference]: With dead ends: 566 [2022-11-02 20:07:46,833 INFO L226 Difference]: Without dead ends: 442 [2022-11-02 20:07:46,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 299 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=168, Invalid=384, Unknown=0, NotChecked=0, Total=552 [2022-11-02 20:07:46,834 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 1488 mSDsluCounter, 741 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1488 SdHoareTripleChecker+Valid, 873 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:07:46,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1488 Valid, 873 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:07:46,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2022-11-02 20:07:46,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 202. [2022-11-02 20:07:46,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 201 states have (on average 1.3333333333333333) internal successors, (268), 201 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:46,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 268 transitions. [2022-11-02 20:07:46,841 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 268 transitions. Word has length 155 [2022-11-02 20:07:46,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:07:46,841 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 268 transitions. [2022-11-02 20:07:46,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.0) internal successors, (187), 11 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:46,842 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 268 transitions. [2022-11-02 20:07:46,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-11-02 20:07:46,843 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:07:46,843 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 20:07:46,858 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:47,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:07:47,058 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:07:47,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:47,058 INFO L85 PathProgramCache]: Analyzing trace with hash -25645097, now seen corresponding path program 1 times [2022-11-02 20:07:47,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:07:47,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [4036014] [2022-11-02 20:07:47,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:47,059 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:07:47,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:07:47,060 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:07:47,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-11-02 20:07:47,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:47,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 752 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-02 20:07:47,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:07:47,790 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 73 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 20:07:47,791 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:07:48,199 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 73 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 20:07:48,200 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:07:48,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [4036014] [2022-11-02 20:07:48,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [4036014] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:07:48,200 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:07:48,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2022-11-02 20:07:48,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63208389] [2022-11-02 20:07:48,200 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:07:48,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-02 20:07:48,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:07:48,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-02 20:07:48,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2022-11-02 20:07:48,202 INFO L87 Difference]: Start difference. First operand 202 states and 268 transitions. Second operand has 20 states, 20 states have (on average 11.45) internal successors, (229), 20 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:49,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:07:49,325 INFO L93 Difference]: Finished difference Result 953 states and 1363 transitions. [2022-11-02 20:07:49,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-02 20:07:49,325 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 11.45) internal successors, (229), 20 states have internal predecessors, (229), 0 states have call successors, (0), 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 20:07:49,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:07:49,328 INFO L225 Difference]: With dead ends: 953 [2022-11-02 20:07:49,328 INFO L226 Difference]: Without dead ends: 827 [2022-11-02 20:07:49,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 289 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=394, Invalid=1246, Unknown=0, NotChecked=0, Total=1640 [2022-11-02 20:07:49,331 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 2184 mSDsluCounter, 3188 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2184 SdHoareTripleChecker+Valid, 3425 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:07:49,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2184 Valid, 3425 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 562 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 20:07:49,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2022-11-02 20:07:49,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 326. [2022-11-02 20:07:49,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 325 states have (on average 1.3846153846153846) internal successors, (450), 325 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:49,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 450 transitions. [2022-11-02 20:07:49,346 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 450 transitions. Word has length 155 [2022-11-02 20:07:49,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:07:49,346 INFO L495 AbstractCegarLoop]: Abstraction has 326 states and 450 transitions. [2022-11-02 20:07:49,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 11.45) internal successors, (229), 20 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:49,346 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 450 transitions. [2022-11-02 20:07:49,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-11-02 20:07:49,348 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:07:49,348 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:07:49,364 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:49,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:07:49,563 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:07:49,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:49,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1885397461, now seen corresponding path program 1 times [2022-11-02 20:07:49,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:07:49,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [561044638] [2022-11-02 20:07:49,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:49,564 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:07:49,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:07:49,566 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:07:49,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-11-02 20:07:49,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:49,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 752 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 20:07:49,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:07:50,156 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 20:07:50,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:07:50,454 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 20:07:50,455 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:07:50,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [561044638] [2022-11-02 20:07:50,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [561044638] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:07:50,458 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:07:50,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2022-11-02 20:07:50,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602661967] [2022-11-02 20:07:50,459 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:07:50,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 20:07:50,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:07:50,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 20:07:50,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:07:50,461 INFO L87 Difference]: Start difference. First operand 326 states and 450 transitions. Second operand has 19 states, 19 states have (on average 10.894736842105264) internal successors, (207), 19 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:51,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:07:51,545 INFO L93 Difference]: Finished difference Result 2174 states and 3144 transitions. [2022-11-02 20:07:51,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-02 20:07:51,545 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 10.894736842105264) internal successors, (207), 19 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2022-11-02 20:07:51,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:07:51,556 INFO L225 Difference]: With dead ends: 2174 [2022-11-02 20:07:51,556 INFO L226 Difference]: Without dead ends: 1924 [2022-11-02 20:07:51,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 291 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=408, Invalid=1314, Unknown=0, NotChecked=0, Total=1722 [2022-11-02 20:07:51,558 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 1676 mSDsluCounter, 2536 mSDsCounter, 0 mSdLazyCounter, 563 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1676 SdHoareTripleChecker+Valid, 2704 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:07:51,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1676 Valid, 2704 Invalid, 611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 563 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 20:07:51,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1924 states. [2022-11-02 20:07:51,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1924 to 600. [2022-11-02 20:07:51,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 599 states have (on average 1.4040066777963272) internal successors, (841), 599 states have internal predecessors, (841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:51,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 841 transitions. [2022-11-02 20:07:51,598 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 841 transitions. Word has length 155 [2022-11-02 20:07:51,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:07:51,599 INFO L495 AbstractCegarLoop]: Abstraction has 600 states and 841 transitions. [2022-11-02 20:07:51,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 10.894736842105264) internal successors, (207), 19 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:51,599 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 841 transitions. [2022-11-02 20:07:51,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-11-02 20:07:51,601 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:07:51,601 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:07:51,616 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:51,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:07:51,816 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:07:51,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:51,817 INFO L85 PathProgramCache]: Analyzing trace with hash 918046807, now seen corresponding path program 1 times [2022-11-02 20:07:51,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:07:51,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [783268561] [2022-11-02 20:07:51,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:51,818 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:07:51,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:07:51,819 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:07:51,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-11-02 20:07:52,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:52,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 752 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 20:07:52,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:07:52,390 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 69 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:07:52,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:07:52,675 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 20:07:52,675 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:07:52,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [783268561] [2022-11-02 20:07:52,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [783268561] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:07:52,676 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:07:52,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2022-11-02 20:07:52,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38275453] [2022-11-02 20:07:52,676 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:07:52,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 20:07:52,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:07:52,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 20:07:52,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:07:52,678 INFO L87 Difference]: Start difference. First operand 600 states and 841 transitions. Second operand has 19 states, 19 states have (on average 10.894736842105264) internal successors, (207), 19 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:53,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:07:53,771 INFO L93 Difference]: Finished difference Result 1877 states and 2704 transitions. [2022-11-02 20:07:53,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-02 20:07:53,771 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 10.894736842105264) internal successors, (207), 19 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2022-11-02 20:07:53,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:07:53,776 INFO L225 Difference]: With dead ends: 1877 [2022-11-02 20:07:53,776 INFO L226 Difference]: Without dead ends: 1627 [2022-11-02 20:07:53,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 291 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=408, Invalid=1314, Unknown=0, NotChecked=0, Total=1722 [2022-11-02 20:07:53,778 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 1836 mSDsluCounter, 2958 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1836 SdHoareTripleChecker+Valid, 3127 SdHoareTripleChecker+Invalid, 658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:07:53,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1836 Valid, 3127 Invalid, 658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 20:07:53,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1627 states. [2022-11-02 20:07:53,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1627 to 600. [2022-11-02 20:07:53,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 599 states have (on average 1.4006677796327212) internal successors, (839), 599 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:53,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 839 transitions. [2022-11-02 20:07:53,803 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 839 transitions. Word has length 155 [2022-11-02 20:07:53,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:07:53,804 INFO L495 AbstractCegarLoop]: Abstraction has 600 states and 839 transitions. [2022-11-02 20:07:53,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 10.894736842105264) internal successors, (207), 19 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:53,804 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 839 transitions. [2022-11-02 20:07:53,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-11-02 20:07:53,806 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:07:53,806 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:07:53,827 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:54,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:07:54,021 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:07:54,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:54,022 INFO L85 PathProgramCache]: Analyzing trace with hash 425420633, now seen corresponding path program 1 times [2022-11-02 20:07:54,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:07:54,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1397312328] [2022-11-02 20:07:54,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:54,023 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:07:54,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:07:54,023 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:07:54,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2022-11-02 20:07:54,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:54,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 752 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:07:54,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:07:54,528 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 67 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:07:54,528 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:07:54,706 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 67 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:07:54,706 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:07:54,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1397312328] [2022-11-02 20:07:54,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1397312328] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:07:54,707 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:07:54,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-11-02 20:07:54,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245388769] [2022-11-02 20:07:54,707 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:07:54,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:07:54,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:07:54,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:07:54,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:07:54,708 INFO L87 Difference]: Start difference. First operand 600 states and 839 transitions. Second operand has 11 states, 11 states have (on average 17.0) internal successors, (187), 11 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:55,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:07:55,182 INFO L93 Difference]: Finished difference Result 2084 states and 3005 transitions. [2022-11-02 20:07:55,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 20:07:55,182 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 17.0) internal successors, (187), 11 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2022-11-02 20:07:55,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:07:55,186 INFO L225 Difference]: With dead ends: 2084 [2022-11-02 20:07:55,186 INFO L226 Difference]: Without dead ends: 1586 [2022-11-02 20:07:55,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 299 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=168, Invalid=384, Unknown=0, NotChecked=0, Total=552 [2022-11-02 20:07:55,188 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 1230 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1230 SdHoareTripleChecker+Valid, 895 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:07:55,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1230 Valid, 895 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:07:55,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1586 states. [2022-11-02 20:07:55,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1586 to 632. [2022-11-02 20:07:55,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 632 states, 631 states have (on average 1.3898573692551506) internal successors, (877), 631 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:55,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 877 transitions. [2022-11-02 20:07:55,212 INFO L78 Accepts]: Start accepts. Automaton has 632 states and 877 transitions. Word has length 155 [2022-11-02 20:07:55,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:07:55,212 INFO L495 AbstractCegarLoop]: Abstraction has 632 states and 877 transitions. [2022-11-02 20:07:55,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.0) internal successors, (187), 11 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:55,212 INFO L276 IsEmpty]: Start isEmpty. Operand 632 states and 877 transitions. [2022-11-02 20:07:55,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-11-02 20:07:55,214 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:07:55,214 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:07:55,229 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:55,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:07:55,427 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:07:55,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:55,427 INFO L85 PathProgramCache]: Analyzing trace with hash -790733093, now seen corresponding path program 1 times [2022-11-02 20:07:55,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:07:55,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [706314725] [2022-11-02 20:07:55,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:55,428 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:07:55,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:07:55,429 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:07:55,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2022-11-02 20:07:55,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:55,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 752 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:07:55,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:07:55,990 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 63 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:07:55,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:07:56,196 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 20:07:56,196 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:07:56,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [706314725] [2022-11-02 20:07:56,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [706314725] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:07:56,196 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:07:56,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-11-02 20:07:56,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651801986] [2022-11-02 20:07:56,197 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:07:56,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:07:56,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:07:56,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:07:56,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:07:56,198 INFO L87 Difference]: Start difference. First operand 632 states and 877 transitions. Second operand has 11 states, 11 states have (on average 20.09090909090909) internal successors, (221), 11 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:56,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:07:56,597 INFO L93 Difference]: Finished difference Result 3060 states and 4389 transitions. [2022-11-02 20:07:56,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:07:56,597 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 20.09090909090909) internal successors, (221), 11 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2022-11-02 20:07:56,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:07:56,604 INFO L225 Difference]: With dead ends: 3060 [2022-11-02 20:07:56,604 INFO L226 Difference]: Without dead ends: 2530 [2022-11-02 20:07:56,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 299 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:07:56,606 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 729 mSDsluCounter, 1306 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 729 SdHoareTripleChecker+Valid, 1469 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:07:56,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [729 Valid, 1469 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:07:56,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2530 states. [2022-11-02 20:07:56,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2530 to 1160. [2022-11-02 20:07:56,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1160 states, 1159 states have (on average 1.4124245038826575) internal successors, (1637), 1159 states have internal predecessors, (1637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:56,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1160 states to 1160 states and 1637 transitions. [2022-11-02 20:07:56,651 INFO L78 Accepts]: Start accepts. Automaton has 1160 states and 1637 transitions. Word has length 155 [2022-11-02 20:07:56,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:07:56,651 INFO L495 AbstractCegarLoop]: Abstraction has 1160 states and 1637 transitions. [2022-11-02 20:07:56,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 20.09090909090909) internal successors, (221), 11 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:56,651 INFO L276 IsEmpty]: Start isEmpty. Operand 1160 states and 1637 transitions. [2022-11-02 20:07:56,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-11-02 20:07:56,653 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:07:56,653 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:07:56,668 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:56,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:07:56,868 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:07:56,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:56,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1208129699, now seen corresponding path program 1 times [2022-11-02 20:07:56,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:07:56,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [465332787] [2022-11-02 20:07:56,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:56,869 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:07:56,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:07:56,871 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:07:56,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2022-11-02 20:07:57,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:57,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 752 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:07:57,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:07:57,446 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 61 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:07:57,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:07:57,663 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 20:07:57,664 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:07:57,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [465332787] [2022-11-02 20:07:57,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [465332787] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:07:57,664 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:07:57,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-11-02 20:07:57,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246558174] [2022-11-02 20:07:57,664 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:07:57,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:07:57,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:07:57,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:07:57,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:07:57,666 INFO L87 Difference]: Start difference. First operand 1160 states and 1637 transitions. Second operand has 11 states, 11 states have (on average 20.09090909090909) internal successors, (221), 11 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:58,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:07:58,057 INFO L93 Difference]: Finished difference Result 3580 states and 5133 transitions. [2022-11-02 20:07:58,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:07:58,057 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 20.09090909090909) internal successors, (221), 11 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2022-11-02 20:07:58,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:07:58,065 INFO L225 Difference]: With dead ends: 3580 [2022-11-02 20:07:58,066 INFO L226 Difference]: Without dead ends: 2522 [2022-11-02 20:07:58,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 299 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:07:58,068 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 930 mSDsluCounter, 1311 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 930 SdHoareTripleChecker+Valid, 1474 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:07:58,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [930 Valid, 1474 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:07:58,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2522 states. [2022-11-02 20:07:58,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2522 to 1160. [2022-11-02 20:07:58,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1160 states, 1159 states have (on average 1.4089732528041414) internal successors, (1633), 1159 states have internal predecessors, (1633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:58,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1160 states to 1160 states and 1633 transitions. [2022-11-02 20:07:58,109 INFO L78 Accepts]: Start accepts. Automaton has 1160 states and 1633 transitions. Word has length 155 [2022-11-02 20:07:58,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:07:58,109 INFO L495 AbstractCegarLoop]: Abstraction has 1160 states and 1633 transitions. [2022-11-02 20:07:58,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 20.09090909090909) internal successors, (221), 11 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:58,110 INFO L276 IsEmpty]: Start isEmpty. Operand 1160 states and 1633 transitions. [2022-11-02 20:07:58,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-11-02 20:07:58,111 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:07:58,111 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:07:58,127 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2022-11-02 20:07:58,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:07:58,326 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:07:58,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:07:58,327 INFO L85 PathProgramCache]: Analyzing trace with hash 753444959, now seen corresponding path program 1 times [2022-11-02 20:07:58,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:07:58,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [705207181] [2022-11-02 20:07:58,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:07:58,327 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:07:58,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:07:58,328 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:07:58,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2022-11-02 20:07:58,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:07:58,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 752 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 20:07:58,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:07:59,206 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 57 proven. 3 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-02 20:07:59,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:07:59,515 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 57 proven. 3 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-02 20:07:59,516 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:07:59,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [705207181] [2022-11-02 20:07:59,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [705207181] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:07:59,516 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:07:59,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2022-11-02 20:07:59,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896151561] [2022-11-02 20:07:59,517 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:07:59,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:07:59,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:07:59,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:07:59,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:07:59,518 INFO L87 Difference]: Start difference. First operand 1160 states and 1633 transitions. Second operand has 10 states, 10 states have (on average 21.4) internal successors, (214), 10 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:59,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:07:59,863 INFO L93 Difference]: Finished difference Result 6120 states and 8789 transitions. [2022-11-02 20:07:59,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:07:59,864 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 21.4) internal successors, (214), 10 states have internal predecessors, (214), 0 states have call successors, (0), 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 20:07:59,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:07:59,878 INFO L225 Difference]: With dead ends: 6120 [2022-11-02 20:07:59,878 INFO L226 Difference]: Without dead ends: 5062 [2022-11-02 20:07:59,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 299 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:07:59,885 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 738 mSDsluCounter, 1186 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 738 SdHoareTripleChecker+Valid, 1371 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:07:59,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [738 Valid, 1371 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:07:59,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5062 states. [2022-11-02 20:07:59,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5062 to 2216. [2022-11-02 20:07:59,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2216 states, 2215 states have (on average 1.419864559819413) internal successors, (3145), 2215 states have internal predecessors, (3145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:59,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2216 states to 2216 states and 3145 transitions. [2022-11-02 20:07:59,997 INFO L78 Accepts]: Start accepts. Automaton has 2216 states and 3145 transitions. Word has length 155 [2022-11-02 20:07:59,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:07:59,997 INFO L495 AbstractCegarLoop]: Abstraction has 2216 states and 3145 transitions. [2022-11-02 20:07:59,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 21.4) internal successors, (214), 10 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:07:59,998 INFO L276 IsEmpty]: Start isEmpty. Operand 2216 states and 3145 transitions. [2022-11-02 20:08:00,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-11-02 20:08:00,001 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:00,001 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:08:00,019 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2022-11-02 20:08:00,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:08:00,216 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:08:00,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:00,217 INFO L85 PathProgramCache]: Analyzing trace with hash 2014362209, now seen corresponding path program 1 times [2022-11-02 20:08:00,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:08:00,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1528913534] [2022-11-02 20:08:00,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:00,217 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:08:00,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:08:00,218 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:08:00,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2022-11-02 20:08:00,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:00,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 752 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:08:00,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:08:00,815 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 55 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:08:00,816 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:08:01,055 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 66 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:08:01,055 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:08:01,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1528913534] [2022-11-02 20:08:01,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1528913534] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:08:01,056 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:08:01,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2022-11-02 20:08:01,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171097631] [2022-11-02 20:08:01,056 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:08:01,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-02 20:08:01,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:08:01,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-02 20:08:01,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:08:01,057 INFO L87 Difference]: Start difference. First operand 2216 states and 3145 transitions. Second operand has 17 states, 17 states have (on average 10.294117647058824) internal successors, (175), 17 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 20:08:01,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:01,923 INFO L93 Difference]: Finished difference Result 11674 states and 16706 transitions. [2022-11-02 20:08:01,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-02 20:08:01,924 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 10.294117647058824) internal successors, (175), 17 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) Word has length 155 [2022-11-02 20:08:01,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:08:01,945 INFO L225 Difference]: With dead ends: 11674 [2022-11-02 20:08:01,945 INFO L226 Difference]: Without dead ends: 9560 [2022-11-02 20:08:01,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=281, Invalid=841, Unknown=0, NotChecked=0, Total=1122 [2022-11-02 20:08:01,949 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 1831 mSDsluCounter, 1347 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1831 SdHoareTripleChecker+Valid, 1455 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:08:01,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1831 Valid, 1455 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:08:01,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9560 states. [2022-11-02 20:08:02,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9560 to 4520. [2022-11-02 20:08:02,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4520 states, 4519 states have (on average 1.4182341225934942) internal successors, (6409), 4519 states have internal predecessors, (6409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:02,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4520 states to 4520 states and 6409 transitions. [2022-11-02 20:08:02,145 INFO L78 Accepts]: Start accepts. Automaton has 4520 states and 6409 transitions. Word has length 155 [2022-11-02 20:08:02,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:08:02,146 INFO L495 AbstractCegarLoop]: Abstraction has 4520 states and 6409 transitions. [2022-11-02 20:08:02,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 10.294117647058824) internal successors, (175), 17 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 20:08:02,146 INFO L276 IsEmpty]: Start isEmpty. Operand 4520 states and 6409 transitions. [2022-11-02 20:08:02,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-11-02 20:08:02,148 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:02,149 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:08:02,160 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2022-11-02 20:08:02,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:08:02,349 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:08:02,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:02,350 INFO L85 PathProgramCache]: Analyzing trace with hash -893819677, now seen corresponding path program 1 times [2022-11-02 20:08:02,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:08:02,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1087034201] [2022-11-02 20:08:02,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:02,351 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:08:02,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:08:02,352 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:08:02,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2022-11-02 20:08:02,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:02,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 752 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 20:08:02,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:08:03,369 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 53 proven. 7 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-02 20:08:03,369 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:08:03,714 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 53 proven. 7 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-02 20:08:03,714 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:08:03,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1087034201] [2022-11-02 20:08:03,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1087034201] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:08:03,714 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:08:03,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2022-11-02 20:08:03,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305994949] [2022-11-02 20:08:03,715 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:08:03,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:08:03,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:08:03,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:08:03,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:08:03,716 INFO L87 Difference]: Start difference. First operand 4520 states and 6409 transitions. Second operand has 10 states, 10 states have (on average 21.4) internal successors, (214), 10 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:04,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:04,100 INFO L93 Difference]: Finished difference Result 14752 states and 21077 transitions. [2022-11-02 20:08:04,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:08:04,101 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 21.4) internal successors, (214), 10 states have internal predecessors, (214), 0 states have call successors, (0), 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 20:08:04,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:08:04,115 INFO L225 Difference]: With dead ends: 14752 [2022-11-02 20:08:04,116 INFO L226 Difference]: Without dead ends: 10334 [2022-11-02 20:08:04,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 299 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:08:04,120 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 688 mSDsluCounter, 1188 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 688 SdHoareTripleChecker+Valid, 1376 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:08:04,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [688 Valid, 1376 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:08:04,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10334 states. [2022-11-02 20:08:04,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10334 to 4520. [2022-11-02 20:08:04,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4520 states, 4519 states have (on average 1.4146935162646603) internal successors, (6393), 4519 states have internal predecessors, (6393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:04,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4520 states to 4520 states and 6393 transitions. [2022-11-02 20:08:04,326 INFO L78 Accepts]: Start accepts. Automaton has 4520 states and 6393 transitions. Word has length 155 [2022-11-02 20:08:04,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:08:04,327 INFO L495 AbstractCegarLoop]: Abstraction has 4520 states and 6393 transitions. [2022-11-02 20:08:04,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 21.4) internal successors, (214), 10 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:04,327 INFO L276 IsEmpty]: Start isEmpty. Operand 4520 states and 6393 transitions. [2022-11-02 20:08:04,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-11-02 20:08:04,329 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:04,329 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:08:04,351 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2022-11-02 20:08:04,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:08:04,544 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:08:04,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:04,544 INFO L85 PathProgramCache]: Analyzing trace with hash -449919003, now seen corresponding path program 1 times [2022-11-02 20:08:04,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:08:04,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [256640203] [2022-11-02 20:08:04,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:04,545 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:08:04,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:08:04,546 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:08:04,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2022-11-02 20:08:04,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:04,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 752 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:08:04,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:08:05,058 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 51 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:08:05,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:08:05,321 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 62 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:08:05,322 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:08:05,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [256640203] [2022-11-02 20:08:05,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [256640203] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:08:05,322 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:08:05,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2022-11-02 20:08:05,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104366593] [2022-11-02 20:08:05,323 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:08:05,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-02 20:08:05,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:08:05,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-02 20:08:05,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:08:05,325 INFO L87 Difference]: Start difference. First operand 4520 states and 6393 transitions. Second operand has 17 states, 17 states have (on average 10.294117647058824) internal successors, (175), 17 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 20:08:06,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:06,310 INFO L93 Difference]: Finished difference Result 13978 states and 19878 transitions. [2022-11-02 20:08:06,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-02 20:08:06,310 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 10.294117647058824) internal successors, (175), 17 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) Word has length 155 [2022-11-02 20:08:06,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:08:06,323 INFO L225 Difference]: With dead ends: 13978 [2022-11-02 20:08:06,323 INFO L226 Difference]: Without dead ends: 9560 [2022-11-02 20:08:06,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=281, Invalid=841, Unknown=0, NotChecked=0, Total=1122 [2022-11-02 20:08:06,327 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 1391 mSDsluCounter, 1731 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1391 SdHoareTripleChecker+Valid, 1844 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:08:06,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1391 Valid, 1844 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 470 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 20:08:06,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9560 states. [2022-11-02 20:08:06,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9560 to 4584. [2022-11-02 20:08:06,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4584 states, 4583 states have (on average 1.407156884137028) internal successors, (6449), 4583 states have internal predecessors, (6449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:06,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4584 states to 4584 states and 6449 transitions. [2022-11-02 20:08:06,498 INFO L78 Accepts]: Start accepts. Automaton has 4584 states and 6449 transitions. Word has length 155 [2022-11-02 20:08:06,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:08:06,498 INFO L495 AbstractCegarLoop]: Abstraction has 4584 states and 6449 transitions. [2022-11-02 20:08:06,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 10.294117647058824) internal successors, (175), 17 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 20:08:06,499 INFO L276 IsEmpty]: Start isEmpty. Operand 4584 states and 6449 transitions. [2022-11-02 20:08:06,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-11-02 20:08:06,500 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:06,500 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:08:06,520 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2022-11-02 20:08:06,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:08:06,715 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:08:06,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:06,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1816462183, now seen corresponding path program 1 times [2022-11-02 20:08:06,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:08:06,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1556386617] [2022-11-02 20:08:06,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:06,716 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:08:06,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:08:06,717 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:08:06,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2022-11-02 20:08:06,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:06,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 752 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:08:06,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:08:07,236 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 49 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:08:07,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:08:07,486 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 60 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:08:07,486 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:08:07,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1556386617] [2022-11-02 20:08:07,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1556386617] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:08:07,486 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:08:07,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2022-11-02 20:08:07,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948675209] [2022-11-02 20:08:07,487 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:08:07,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-02 20:08:07,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:08:07,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-02 20:08:07,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:08:07,488 INFO L87 Difference]: Start difference. First operand 4584 states and 6449 transitions. Second operand has 17 states, 17 states have (on average 10.294117647058824) internal successors, (175), 17 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 20:08:08,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:08,200 INFO L93 Difference]: Finished difference Result 7122 states and 10022 transitions. [2022-11-02 20:08:08,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-02 20:08:08,201 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 10.294117647058824) internal successors, (175), 17 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) Word has length 155 [2022-11-02 20:08:08,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:08:08,205 INFO L225 Difference]: With dead ends: 7122 [2022-11-02 20:08:08,205 INFO L226 Difference]: Without dead ends: 2640 [2022-11-02 20:08:08,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=223, Invalid=647, Unknown=0, NotChecked=0, Total=870 [2022-11-02 20:08:08,210 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 1488 mSDsluCounter, 1499 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1488 SdHoareTripleChecker+Valid, 1609 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:08:08,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1488 Valid, 1609 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:08:08,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2640 states. [2022-11-02 20:08:08,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2640 to 2132. [2022-11-02 20:08:08,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2132 states, 2131 states have (on average 1.383857343969967) internal successors, (2949), 2131 states have internal predecessors, (2949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:08,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2132 states to 2132 states and 2949 transitions. [2022-11-02 20:08:08,297 INFO L78 Accepts]: Start accepts. Automaton has 2132 states and 2949 transitions. Word has length 155 [2022-11-02 20:08:08,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:08:08,297 INFO L495 AbstractCegarLoop]: Abstraction has 2132 states and 2949 transitions. [2022-11-02 20:08:08,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 10.294117647058824) internal successors, (175), 17 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 20:08:08,298 INFO L276 IsEmpty]: Start isEmpty. Operand 2132 states and 2949 transitions. [2022-11-02 20:08:08,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2022-11-02 20:08:08,302 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:08,302 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:08:08,324 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2022-11-02 20:08:08,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:08:08,516 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:08:08,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:08,516 INFO L85 PathProgramCache]: Analyzing trace with hash 102017509, now seen corresponding path program 1 times [2022-11-02 20:08:08,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:08:08,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1177161289] [2022-11-02 20:08:08,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:08,518 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:08:08,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:08:08,519 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:08:08,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2022-11-02 20:08:08,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:08,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 1408 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:08:08,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:08:09,263 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 263 proven. 34 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2022-11-02 20:08:09,264 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:08:09,485 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 296 proven. 1 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2022-11-02 20:08:09,486 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:08:09,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1177161289] [2022-11-02 20:08:09,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1177161289] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:08:09,486 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:08:09,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-11-02 20:08:09,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187549022] [2022-11-02 20:08:09,487 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:08:09,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:08:09,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:08:09,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:08:09,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:08:09,488 INFO L87 Difference]: Start difference. First operand 2132 states and 2949 transitions. Second operand has 11 states, 11 states have (on average 23.636363636363637) internal successors, (260), 11 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:10,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:10,039 INFO L93 Difference]: Finished difference Result 11064 states and 15473 transitions. [2022-11-02 20:08:10,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:08:10,040 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 23.636363636363637) internal successors, (260), 11 states have internal predecessors, (260), 0 states have call successors, (0), 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 20:08:10,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:08:10,047 INFO L225 Difference]: With dead ends: 11064 [2022-11-02 20:08:10,048 INFO L226 Difference]: Without dead ends: 9034 [2022-11-02 20:08:10,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 614 GetRequests, 599 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:08:10,052 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 692 mSDsluCounter, 1523 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 692 SdHoareTripleChecker+Valid, 1711 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:08:10,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [692 Valid, 1711 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:08:10,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9034 states. [2022-11-02 20:08:10,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9034 to 4160. [2022-11-02 20:08:10,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4160 states, 4159 states have (on average 1.3842269776388556) internal successors, (5757), 4159 states have internal predecessors, (5757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:10,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4160 states to 4160 states and 5757 transitions. [2022-11-02 20:08:10,249 INFO L78 Accepts]: Start accepts. Automaton has 4160 states and 5757 transitions. Word has length 305 [2022-11-02 20:08:10,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:08:10,251 INFO L495 AbstractCegarLoop]: Abstraction has 4160 states and 5757 transitions. [2022-11-02 20:08:10,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 23.636363636363637) internal successors, (260), 11 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:10,251 INFO L276 IsEmpty]: Start isEmpty. Operand 4160 states and 5757 transitions. [2022-11-02 20:08:10,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2022-11-02 20:08:10,259 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:10,259 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:08:10,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2022-11-02 20:08:10,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:08:10,478 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:08:10,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:10,479 INFO L85 PathProgramCache]: Analyzing trace with hash 2115862887, now seen corresponding path program 2 times [2022-11-02 20:08:10,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:08:10,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [450788935] [2022-11-02 20:08:10,480 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:08:10,480 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:08:10,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:08:10,480 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:08:10,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2022-11-02 20:08:10,888 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:08:10,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:08:10,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 1408 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:08:10,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:08:11,260 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 269 proven. 40 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2022-11-02 20:08:11,260 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:08:11,489 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 308 proven. 1 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2022-11-02 20:08:11,489 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:08:11,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [450788935] [2022-11-02 20:08:11,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [450788935] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:08:11,489 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:08:11,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-11-02 20:08:11,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285895191] [2022-11-02 20:08:11,490 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:08:11,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:08:11,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:08:11,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:08:11,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:08:11,491 INFO L87 Difference]: Start difference. First operand 4160 states and 5757 transitions. Second operand has 11 states, 11 states have (on average 24.363636363636363) internal successors, (268), 11 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:12,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:12,074 INFO L93 Difference]: Finished difference Result 21792 states and 30353 transitions. [2022-11-02 20:08:12,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:08:12,074 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 24.363636363636363) internal successors, (268), 11 states have internal predecessors, (268), 0 states have call successors, (0), 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 20:08:12,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:08:12,085 INFO L225 Difference]: With dead ends: 21792 [2022-11-02 20:08:12,085 INFO L226 Difference]: Without dead ends: 17734 [2022-11-02 20:08:12,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 614 GetRequests, 599 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:08:12,088 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 986 mSDsluCounter, 1014 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 986 SdHoareTripleChecker+Valid, 1203 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:08:12,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [986 Valid, 1203 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:08:12,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17734 states. [2022-11-02 20:08:12,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17734 to 8216. [2022-11-02 20:08:12,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8216 states, 8215 states have (on average 1.3810103469263542) internal successors, (11345), 8215 states have internal predecessors, (11345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:12,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8216 states to 8216 states and 11345 transitions. [2022-11-02 20:08:12,443 INFO L78 Accepts]: Start accepts. Automaton has 8216 states and 11345 transitions. Word has length 305 [2022-11-02 20:08:12,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:08:12,443 INFO L495 AbstractCegarLoop]: Abstraction has 8216 states and 11345 transitions. [2022-11-02 20:08:12,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 24.363636363636363) internal successors, (268), 11 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:12,444 INFO L276 IsEmpty]: Start isEmpty. Operand 8216 states and 11345 transitions. [2022-11-02 20:08:12,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2022-11-02 20:08:12,457 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:12,457 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:08:12,477 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (45)] Ended with exit code 0 [2022-11-02 20:08:12,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:08:12,677 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:08:12,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:12,678 INFO L85 PathProgramCache]: Analyzing trace with hash -2055822743, now seen corresponding path program 3 times [2022-11-02 20:08:12,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:08:12,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [421300298] [2022-11-02 20:08:12,679 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:08:12,679 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:08:12,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:08:12,679 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:08:12,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2022-11-02 20:08:12,917 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-02 20:08:12,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:08:12,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:08:12,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:08:13,388 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 101 proven. 15 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2022-11-02 20:08:13,389 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:08:13,874 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 101 proven. 15 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2022-11-02 20:08:13,874 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:08:13,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [421300298] [2022-11-02 20:08:13,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [421300298] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:08:13,875 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:08:13,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-11-02 20:08:13,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043817550] [2022-11-02 20:08:13,875 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:08:13,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:08:13,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:08:13,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:08:13,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:08:13,877 INFO L87 Difference]: Start difference. First operand 8216 states and 11345 transitions. Second operand has 9 states, 9 states have (on average 16.333333333333332) internal successors, (147), 9 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:14,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:14,600 INFO L93 Difference]: Finished difference Result 28198 states and 39250 transitions. [2022-11-02 20:08:14,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 20:08:14,600 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 16.333333333333332) internal successors, (147), 9 states have internal predecessors, (147), 0 states have call successors, (0), 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 20:08:14,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:08:14,616 INFO L225 Difference]: With dead ends: 28198 [2022-11-02 20:08:14,617 INFO L226 Difference]: Without dead ends: 20026 [2022-11-02 20:08:14,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 617 GetRequests, 599 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=100, Invalid=206, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:08:14,623 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 627 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:08:14,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [627 Valid, 544 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:08:14,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20026 states. [2022-11-02 20:08:14,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20026 to 8440. [2022-11-02 20:08:14,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8440 states, 8439 states have (on average 1.3707785282616425) internal successors, (11568), 8439 states have internal predecessors, (11568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:14,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8440 states to 8440 states and 11568 transitions. [2022-11-02 20:08:14,978 INFO L78 Accepts]: Start accepts. Automaton has 8440 states and 11568 transitions. Word has length 305 [2022-11-02 20:08:14,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:08:14,979 INFO L495 AbstractCegarLoop]: Abstraction has 8440 states and 11568 transitions. [2022-11-02 20:08:14,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.333333333333332) internal successors, (147), 9 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:14,979 INFO L276 IsEmpty]: Start isEmpty. Operand 8440 states and 11568 transitions. [2022-11-02 20:08:14,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2022-11-02 20:08:14,991 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:14,991 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:08:15,011 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2022-11-02 20:08:15,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:08:15,205 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:08:15,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:15,205 INFO L85 PathProgramCache]: Analyzing trace with hash -744210645, now seen corresponding path program 1 times [2022-11-02 20:08:15,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:08:15,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2125271493] [2022-11-02 20:08:15,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:15,207 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:08:15,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:08:15,208 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:08:15,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2022-11-02 20:08:15,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:15,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 1408 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:08:15,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:08:16,118 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 275 proven. 46 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2022-11-02 20:08:16,119 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:08:16,390 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 320 proven. 1 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2022-11-02 20:08:16,391 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:08:16,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2125271493] [2022-11-02 20:08:16,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2125271493] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:08:16,391 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:08:16,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-11-02 20:08:16,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76604534] [2022-11-02 20:08:16,391 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:08:16,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:08:16,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:08:16,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:08:16,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:08:16,393 INFO L87 Difference]: Start difference. First operand 8440 states and 11568 transitions. Second operand has 11 states, 11 states have (on average 24.90909090909091) internal successors, (274), 11 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:17,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:17,009 INFO L93 Difference]: Finished difference Result 20448 states and 28168 transitions. [2022-11-02 20:08:17,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:08:17,010 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 24.90909090909091) internal successors, (274), 11 states have internal predecessors, (274), 0 states have call successors, (0), 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 20:08:17,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:08:17,024 INFO L225 Difference]: With dead ends: 20448 [2022-11-02 20:08:17,024 INFO L226 Difference]: Without dead ends: 15614 [2022-11-02 20:08:17,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 614 GetRequests, 599 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:08:17,031 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 676 mSDsluCounter, 1482 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 676 SdHoareTripleChecker+Valid, 1670 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:08:17,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [676 Valid, 1670 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:08:17,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15614 states. [2022-11-02 20:08:17,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15614 to 8440. [2022-11-02 20:08:17,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8440 states, 8439 states have (on average 1.364142670932575) internal successors, (11512), 8439 states have internal predecessors, (11512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:17,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8440 states to 8440 states and 11512 transitions. [2022-11-02 20:08:17,444 INFO L78 Accepts]: Start accepts. Automaton has 8440 states and 11512 transitions. Word has length 305 [2022-11-02 20:08:17,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:08:17,445 INFO L495 AbstractCegarLoop]: Abstraction has 8440 states and 11512 transitions. [2022-11-02 20:08:17,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 24.90909090909091) internal successors, (274), 11 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:17,445 INFO L276 IsEmpty]: Start isEmpty. Operand 8440 states and 11512 transitions. [2022-11-02 20:08:17,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2022-11-02 20:08:17,461 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:17,461 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, 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] [2022-11-02 20:08:17,485 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2022-11-02 20:08:17,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:08:17,680 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:08:17,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:17,681 INFO L85 PathProgramCache]: Analyzing trace with hash 413321645, now seen corresponding path program 2 times [2022-11-02 20:08:17,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:08:17,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [61431300] [2022-11-02 20:08:17,682 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:08:17,682 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:08:17,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:08:17,683 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:08:17,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2022-11-02 20:08:18,124 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:08:18,125 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:08:18,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 1408 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-02 20:08:18,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:08:18,557 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 279 proven. 50 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2022-11-02 20:08:18,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:08:18,895 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 279 proven. 50 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2022-11-02 20:08:18,895 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:08:18,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [61431300] [2022-11-02 20:08:18,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [61431300] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:08:18,896 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:08:18,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2022-11-02 20:08:18,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740470994] [2022-11-02 20:08:18,896 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:08:18,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 20:08:18,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:08:18,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 20:08:18,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:08:18,898 INFO L87 Difference]: Start difference. First operand 8440 states and 11512 transitions. Second operand has 19 states, 19 states have (on average 13.368421052631579) internal successors, (254), 19 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:20,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:20,930 INFO L93 Difference]: Finished difference Result 47892 states and 66330 transitions. [2022-11-02 20:08:20,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-02 20:08:20,930 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 13.368421052631579) internal successors, (254), 19 states have internal predecessors, (254), 0 states have call successors, (0), 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 20:08:20,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:08:20,954 INFO L225 Difference]: With dead ends: 47892 [2022-11-02 20:08:20,954 INFO L226 Difference]: Without dead ends: 43058 [2022-11-02 20:08:20,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 647 GetRequests, 591 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 752 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=743, Invalid=2563, Unknown=0, NotChecked=0, Total=3306 [2022-11-02 20:08:20,961 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 2957 mSDsluCounter, 1629 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2957 SdHoareTripleChecker+Valid, 1774 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:08:20,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2957 Valid, 1774 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 20:08:20,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43058 states. [2022-11-02 20:08:21,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43058 to 18568. [2022-11-02 20:08:21,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18568 states, 18567 states have (on average 1.3546614962029406) internal successors, (25152), 18567 states have internal predecessors, (25152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:21,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18568 states to 18568 states and 25152 transitions. [2022-11-02 20:08:21,584 INFO L78 Accepts]: Start accepts. Automaton has 18568 states and 25152 transitions. Word has length 305 [2022-11-02 20:08:21,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:08:21,584 INFO L495 AbstractCegarLoop]: Abstraction has 18568 states and 25152 transitions. [2022-11-02 20:08:21,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 13.368421052631579) internal successors, (254), 19 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:21,585 INFO L276 IsEmpty]: Start isEmpty. Operand 18568 states and 25152 transitions. [2022-11-02 20:08:21,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2022-11-02 20:08:21,609 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:21,609 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, 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] [2022-11-02 20:08:21,628 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (48)] Forceful destruction successful, exit code 0 [2022-11-02 20:08:21,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:08:21,827 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:08:21,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:21,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1912719591, now seen corresponding path program 1 times [2022-11-02 20:08:21,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:08:21,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [615668166] [2022-11-02 20:08:21,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:21,829 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:08:21,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:08:21,830 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:08:21,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2022-11-02 20:08:22,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:22,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 1408 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 20:08:22,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:08:23,010 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 283 proven. 35 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2022-11-02 20:08:23,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:08:23,405 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 283 proven. 35 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2022-11-02 20:08:23,405 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:08:23,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [615668166] [2022-11-02 20:08:23,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [615668166] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:08:23,406 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:08:23,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2022-11-02 20:08:23,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557556901] [2022-11-02 20:08:23,406 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:08:23,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:08:23,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:08:23,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:08:23,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:08:23,408 INFO L87 Difference]: Start difference. First operand 18568 states and 25152 transitions. Second operand has 10 states, 10 states have (on average 27.3) internal successors, (273), 10 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:24,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:24,337 INFO L93 Difference]: Finished difference Result 57408 states and 78132 transitions. [2022-11-02 20:08:24,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:08:24,337 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 27.3) internal successors, (273), 10 states have internal predecessors, (273), 0 states have call successors, (0), 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 20:08:24,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:08:24,368 INFO L225 Difference]: With dead ends: 57408 [2022-11-02 20:08:24,368 INFO L226 Difference]: Without dead ends: 38942 [2022-11-02 20:08:24,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 614 GetRequests, 599 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:08:24,383 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 638 mSDsluCounter, 1173 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 638 SdHoareTripleChecker+Valid, 1378 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:08:24,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [638 Valid, 1378 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:08:24,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38942 states. [2022-11-02 20:08:24,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38942 to 18568. [2022-11-02 20:08:24,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18568 states, 18567 states have (on average 1.3486292885226476) internal successors, (25040), 18567 states have internal predecessors, (25040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:24,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18568 states to 18568 states and 25040 transitions. [2022-11-02 20:08:24,933 INFO L78 Accepts]: Start accepts. Automaton has 18568 states and 25040 transitions. Word has length 305 [2022-11-02 20:08:24,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:08:24,934 INFO L495 AbstractCegarLoop]: Abstraction has 18568 states and 25040 transitions. [2022-11-02 20:08:24,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 27.3) internal successors, (273), 10 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:24,934 INFO L276 IsEmpty]: Start isEmpty. Operand 18568 states and 25040 transitions. [2022-11-02 20:08:24,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2022-11-02 20:08:24,953 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:24,953 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, 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] [2022-11-02 20:08:24,966 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (49)] Ended with exit code 0 [2022-11-02 20:08:25,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:08:25,154 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:08:25,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:25,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1932260713, now seen corresponding path program 2 times [2022-11-02 20:08:25,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:08:25,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [240451827] [2022-11-02 20:08:25,155 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:08:25,155 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:08:25,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:08:25,156 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:08:25,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2022-11-02 20:08:25,563 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:08:25,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:08:25,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 1408 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:08:25,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:08:25,848 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 285 proven. 56 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2022-11-02 20:08:25,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:08:26,118 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 296 proven. 45 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2022-11-02 20:08:26,119 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:08:26,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [240451827] [2022-11-02 20:08:26,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [240451827] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:08:26,119 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:08:26,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2022-11-02 20:08:26,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871998887] [2022-11-02 20:08:26,119 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:08:26,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-02 20:08:26,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:08:26,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-02 20:08:26,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:08:26,121 INFO L87 Difference]: Start difference. First operand 18568 states and 25040 transitions. Second operand has 17 states, 17 states have (on average 13.882352941176471) internal successors, (236), 17 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 20:08:27,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:27,363 INFO L93 Difference]: Finished difference Result 50092 states and 67842 transitions. [2022-11-02 20:08:27,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-02 20:08:27,363 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 13.882352941176471) internal successors, (236), 17 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 305 [2022-11-02 20:08:27,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:08:27,390 INFO L225 Difference]: With dead ends: 50092 [2022-11-02 20:08:27,390 INFO L226 Difference]: Without dead ends: 31626 [2022-11-02 20:08:27,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 621 GetRequests, 593 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=223, Invalid=647, Unknown=0, NotChecked=0, Total=870 [2022-11-02 20:08:27,404 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 1634 mSDsluCounter, 1273 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1634 SdHoareTripleChecker+Valid, 1416 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:08:27,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1634 Valid, 1416 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:08:27,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31626 states. [2022-11-02 20:08:28,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31626 to 20296. [2022-11-02 20:08:28,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20296 states, 20295 states have (on average 1.3425966986942597) internal successors, (27248), 20295 states have internal predecessors, (27248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:28,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20296 states to 20296 states and 27248 transitions. [2022-11-02 20:08:28,142 INFO L78 Accepts]: Start accepts. Automaton has 20296 states and 27248 transitions. Word has length 305 [2022-11-02 20:08:28,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:08:28,142 INFO L495 AbstractCegarLoop]: Abstraction has 20296 states and 27248 transitions. [2022-11-02 20:08:28,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 13.882352941176471) internal successors, (236), 17 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 20:08:28,143 INFO L276 IsEmpty]: Start isEmpty. Operand 20296 states and 27248 transitions. [2022-11-02 20:08:28,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2022-11-02 20:08:28,163 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:28,164 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, 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] [2022-11-02 20:08:28,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2022-11-02 20:08:28,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:08:28,364 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:08:28,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:28,365 INFO L85 PathProgramCache]: Analyzing trace with hash 553251497, now seen corresponding path program 3 times [2022-11-02 20:08:28,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:08:28,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1579426537] [2022-11-02 20:08:28,367 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:08:28,367 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:08:28,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:08:28,368 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:08:28,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2022-11-02 20:08:28,627 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-02 20:08:28,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:08:28,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:08:28,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:08:29,064 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 83 proven. 33 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2022-11-02 20:08:29,065 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:08:29,507 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 83 proven. 33 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2022-11-02 20:08:29,507 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:08:29,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1579426537] [2022-11-02 20:08:29,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1579426537] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:08:29,508 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:08:29,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-11-02 20:08:29,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418101528] [2022-11-02 20:08:29,509 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:08:29,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:08:29,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:08:29,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:08:29,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:08:29,510 INFO L87 Difference]: Start difference. First operand 20296 states and 27248 transitions. Second operand has 9 states, 9 states have (on average 15.88888888888889) internal successors, (143), 9 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:30,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:30,355 INFO L93 Difference]: Finished difference Result 40388 states and 54508 transitions. [2022-11-02 20:08:30,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 20:08:30,356 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 15.88888888888889) internal successors, (143), 9 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 305 [2022-11-02 20:08:30,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:08:30,377 INFO L225 Difference]: With dead ends: 40388 [2022-11-02 20:08:30,377 INFO L226 Difference]: Without dead ends: 28546 [2022-11-02 20:08:30,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 617 GetRequests, 599 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=100, Invalid=206, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:08:30,386 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 573 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 573 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:08:30,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [573 Valid, 617 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:08:30,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28546 states. [2022-11-02 20:08:30,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28546 to 19072. [2022-11-02 20:08:30,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19072 states, 19071 states have (on average 1.34675685595931) internal successors, (25684), 19071 states have internal predecessors, (25684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:30,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19072 states to 19072 states and 25684 transitions. [2022-11-02 20:08:30,851 INFO L78 Accepts]: Start accepts. Automaton has 19072 states and 25684 transitions. Word has length 305 [2022-11-02 20:08:30,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:08:30,851 INFO L495 AbstractCegarLoop]: Abstraction has 19072 states and 25684 transitions. [2022-11-02 20:08:30,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.88888888888889) internal successors, (143), 9 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:30,851 INFO L276 IsEmpty]: Start isEmpty. Operand 19072 states and 25684 transitions. [2022-11-02 20:08:30,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2022-11-02 20:08:30,865 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:30,865 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:08:30,874 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (51)] Forceful destruction successful, exit code 0 [2022-11-02 20:08:31,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:08:31,065 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:08:31,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:31,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1939454891, now seen corresponding path program 1 times [2022-11-02 20:08:31,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:08:31,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [119202811] [2022-11-02 20:08:31,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:31,067 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:08:31,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:08:31,068 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:08:31,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2022-11-02 20:08:31,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:31,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 1408 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 20:08:31,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:08:32,105 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 287 proven. 39 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-11-02 20:08:32,106 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:08:32,467 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 287 proven. 39 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-11-02 20:08:32,467 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:08:32,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [119202811] [2022-11-02 20:08:32,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [119202811] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:08:32,467 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:08:32,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2022-11-02 20:08:32,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679343348] [2022-11-02 20:08:32,468 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:08:32,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:08:32,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:08:32,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:08:32,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:08:32,469 INFO L87 Difference]: Start difference. First operand 19072 states and 25684 transitions. Second operand has 10 states, 10 states have (on average 27.7) internal successors, (277), 10 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:33,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:33,299 INFO L93 Difference]: Finished difference Result 58472 states and 79192 transitions. [2022-11-02 20:08:33,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:08:33,300 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 27.7) internal successors, (277), 10 states have internal predecessors, (277), 0 states have call successors, (0), 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 20:08:33,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:08:33,325 INFO L225 Difference]: With dead ends: 58472 [2022-11-02 20:08:33,325 INFO L226 Difference]: Without dead ends: 39502 [2022-11-02 20:08:33,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 614 GetRequests, 599 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:08:33,340 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 663 mSDsluCounter, 1230 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 663 SdHoareTripleChecker+Valid, 1438 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:08:33,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [663 Valid, 1438 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:08:33,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39502 states. [2022-11-02 20:08:33,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39502 to 19072. [2022-11-02 20:08:33,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19072 states, 19071 states have (on average 1.3408840648104452) internal successors, (25572), 19071 states have internal predecessors, (25572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:33,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19072 states to 19072 states and 25572 transitions. [2022-11-02 20:08:33,915 INFO L78 Accepts]: Start accepts. Automaton has 19072 states and 25572 transitions. Word has length 305 [2022-11-02 20:08:33,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:08:33,915 INFO L495 AbstractCegarLoop]: Abstraction has 19072 states and 25572 transitions. [2022-11-02 20:08:33,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 27.7) internal successors, (277), 10 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:33,915 INFO L276 IsEmpty]: Start isEmpty. Operand 19072 states and 25572 transitions. [2022-11-02 20:08:33,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2022-11-02 20:08:33,936 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:33,936 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, 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] [2022-11-02 20:08:33,954 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (52)] Ended with exit code 0 [2022-11-02 20:08:34,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:08:34,147 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:08:34,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:34,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1706919635, now seen corresponding path program 2 times [2022-11-02 20:08:34,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:08:34,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [736245588] [2022-11-02 20:08:34,149 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:08:34,149 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:08:34,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:08:34,151 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:08:34,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2022-11-02 20:08:34,584 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:08:34,584 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:08:34,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 1408 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:08:34,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:08:34,896 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 289 proven. 60 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-11-02 20:08:34,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:08:35,203 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 300 proven. 49 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-11-02 20:08:35,203 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:08:35,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [736245588] [2022-11-02 20:08:35,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [736245588] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:08:35,204 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:08:35,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2022-11-02 20:08:35,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645752526] [2022-11-02 20:08:35,204 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:08:35,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-02 20:08:35,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:08:35,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-02 20:08:35,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:08:35,206 INFO L87 Difference]: Start difference. First operand 19072 states and 25572 transitions. Second operand has 17 states, 17 states have (on average 14.117647058823529) internal successors, (240), 17 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:36,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:36,615 INFO L93 Difference]: Finished difference Result 48796 states and 65730 transitions. [2022-11-02 20:08:36,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-02 20:08:36,616 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 14.117647058823529) internal successors, (240), 17 states have internal predecessors, (240), 0 states have call successors, (0), 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 20:08:36,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:08:36,638 INFO L225 Difference]: With dead ends: 48796 [2022-11-02 20:08:36,639 INFO L226 Difference]: Without dead ends: 29826 [2022-11-02 20:08:36,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 621 GetRequests, 593 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=223, Invalid=647, Unknown=0, NotChecked=0, Total=870 [2022-11-02 20:08:36,648 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 1503 mSDsluCounter, 1547 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1503 SdHoareTripleChecker+Valid, 1694 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:08:36,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1503 Valid, 1694 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 20:08:36,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29826 states. [2022-11-02 20:08:37,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29826 to 19264. [2022-11-02 20:08:37,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19264 states, 19263 states have (on average 1.3337486372839122) internal successors, (25692), 19263 states have internal predecessors, (25692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:37,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19264 states to 19264 states and 25692 transitions. [2022-11-02 20:08:37,365 INFO L78 Accepts]: Start accepts. Automaton has 19264 states and 25692 transitions. Word has length 305 [2022-11-02 20:08:37,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:08:37,365 INFO L495 AbstractCegarLoop]: Abstraction has 19264 states and 25692 transitions. [2022-11-02 20:08:37,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 14.117647058823529) internal successors, (240), 17 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:37,365 INFO L276 IsEmpty]: Start isEmpty. Operand 19264 states and 25692 transitions. [2022-11-02 20:08:37,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2022-11-02 20:08:37,393 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:37,394 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, 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] [2022-11-02 20:08:37,420 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (53)] Forceful destruction successful, exit code 0 [2022-11-02 20:08:37,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:08:37,607 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:08:37,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:37,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1059133037, now seen corresponding path program 3 times [2022-11-02 20:08:37,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:08:37,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [793816338] [2022-11-02 20:08:37,609 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:08:37,609 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:08:37,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:08:37,610 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:08:37,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2022-11-02 20:08:37,912 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-02 20:08:37,913 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:08:37,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:08:37,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:08:38,404 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 41 proven. 75 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2022-11-02 20:08:38,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:08:38,908 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 41 proven. 75 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2022-11-02 20:08:38,908 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:08:38,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [793816338] [2022-11-02 20:08:38,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [793816338] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:08:38,908 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:08:38,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-11-02 20:08:38,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315128528] [2022-11-02 20:08:38,909 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:08:38,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:08:38,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:08:38,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:08:38,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:08:38,910 INFO L87 Difference]: Start difference. First operand 19264 states and 25692 transitions. Second operand has 9 states, 9 states have (on average 15.777777777777779) internal successors, (142), 9 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:39,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:39,890 INFO L93 Difference]: Finished difference Result 46968 states and 62926 transitions. [2022-11-02 20:08:39,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 20:08:39,891 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 15.777777777777779) internal successors, (142), 9 states have internal predecessors, (142), 0 states have call successors, (0), 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 20:08:39,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:08:39,909 INFO L225 Difference]: With dead ends: 46968 [2022-11-02 20:08:39,910 INFO L226 Difference]: Without dead ends: 31670 [2022-11-02 20:08:39,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 617 GetRequests, 599 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=206, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:08:39,915 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 898 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 898 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:08:39,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [898 Valid, 492 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:08:39,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31670 states. [2022-11-02 20:08:40,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31670 to 20576. [2022-11-02 20:08:40,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20576 states, 20575 states have (on average 1.326075334143378) internal successors, (27284), 20575 states have internal predecessors, (27284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:40,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20576 states to 20576 states and 27284 transitions. [2022-11-02 20:08:40,401 INFO L78 Accepts]: Start accepts. Automaton has 20576 states and 27284 transitions. Word has length 305 [2022-11-02 20:08:40,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:08:40,401 INFO L495 AbstractCegarLoop]: Abstraction has 20576 states and 27284 transitions. [2022-11-02 20:08:40,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.777777777777779) internal successors, (142), 9 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:40,401 INFO L276 IsEmpty]: Start isEmpty. Operand 20576 states and 27284 transitions. [2022-11-02 20:08:40,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2022-11-02 20:08:40,416 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:40,416 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, 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] [2022-11-02 20:08:40,426 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (54)] Ended with exit code 0 [2022-11-02 20:08:40,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:08:40,617 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:08:40,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:40,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1727715155, now seen corresponding path program 1 times [2022-11-02 20:08:40,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:08:40,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1653543647] [2022-11-02 20:08:40,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:40,619 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:08:40,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:08:40,620 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:08:40,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2022-11-02 20:08:41,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:41,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 1408 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-02 20:08:41,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:08:41,624 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 271 proven. 42 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-11-02 20:08:41,625 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:08:42,029 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 271 proven. 42 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-11-02 20:08:42,029 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:08:42,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1653543647] [2022-11-02 20:08:42,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1653543647] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:08:42,029 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:08:42,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2022-11-02 20:08:42,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136840887] [2022-11-02 20:08:42,030 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:08:42,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-02 20:08:42,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:08:42,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-02 20:08:42,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2022-11-02 20:08:42,031 INFO L87 Difference]: Start difference. First operand 20576 states and 27284 transitions. Second operand has 24 states, 24 states have (on average 13.583333333333334) internal successors, (326), 24 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:44,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:44,097 INFO L93 Difference]: Finished difference Result 48256 states and 64004 transitions. [2022-11-02 20:08:44,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-02 20:08:44,097 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 13.583333333333334) internal successors, (326), 24 states have internal predecessors, (326), 0 states have call successors, (0), 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 20:08:44,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:08:44,117 INFO L225 Difference]: With dead ends: 48256 [2022-11-02 20:08:44,117 INFO L226 Difference]: Without dead ends: 27782 [2022-11-02 20:08:44,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 637 GetRequests, 586 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 529 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=633, Invalid=2123, Unknown=0, NotChecked=0, Total=2756 [2022-11-02 20:08:44,129 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 2950 mSDsluCounter, 2401 mSDsCounter, 0 mSdLazyCounter, 629 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2950 SdHoareTripleChecker+Valid, 2570 SdHoareTripleChecker+Invalid, 726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:08:44,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2950 Valid, 2570 Invalid, 726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 629 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-02 20:08:44,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27782 states. [2022-11-02 20:08:44,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27782 to 11556. [2022-11-02 20:08:44,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11556 states, 11555 states have (on average 1.3166594547814798) internal successors, (15214), 11555 states have internal predecessors, (15214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:44,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11556 states to 11556 states and 15214 transitions. [2022-11-02 20:08:44,537 INFO L78 Accepts]: Start accepts. Automaton has 11556 states and 15214 transitions. Word has length 305 [2022-11-02 20:08:44,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:08:44,537 INFO L495 AbstractCegarLoop]: Abstraction has 11556 states and 15214 transitions. [2022-11-02 20:08:44,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 13.583333333333334) internal successors, (326), 24 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:44,537 INFO L276 IsEmpty]: Start isEmpty. Operand 11556 states and 15214 transitions. [2022-11-02 20:08:44,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2022-11-02 20:08:44,545 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:44,546 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-02 20:08:44,560 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (55)] Ended with exit code 0 [2022-11-02 20:08:44,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:08:44,746 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:08:44,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:44,747 INFO L85 PathProgramCache]: Analyzing trace with hash 711816619, now seen corresponding path program 1 times [2022-11-02 20:08:44,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:08:44,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [622261485] [2022-11-02 20:08:44,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:44,748 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:08:44,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:08:44,749 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:08:44,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2022-11-02 20:08:45,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:45,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 2064 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:08:45,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:08:45,639 INFO L134 CoverageAnalysis]: Checked inductivity of 1137 backedges. 565 proven. 62 refuted. 0 times theorem prover too weak. 510 trivial. 0 not checked. [2022-11-02 20:08:45,639 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:08:45,935 INFO L134 CoverageAnalysis]: Checked inductivity of 1137 backedges. 576 proven. 51 refuted. 0 times theorem prover too weak. 510 trivial. 0 not checked. [2022-11-02 20:08:45,935 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:08:45,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [622261485] [2022-11-02 20:08:45,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [622261485] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:08:45,936 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:08:45,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2022-11-02 20:08:45,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132018651] [2022-11-02 20:08:45,936 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:08:45,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-02 20:08:45,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:08:45,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-02 20:08:45,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:08:45,938 INFO L87 Difference]: Start difference. First operand 11556 states and 15214 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 20:08:46,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:46,923 INFO L93 Difference]: Finished difference Result 28788 states and 38142 transitions. [2022-11-02 20:08:46,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-02 20:08:46,923 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 455 [2022-11-02 20:08:46,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:08:46,935 INFO L225 Difference]: With dead ends: 28788 [2022-11-02 20:08:46,935 INFO L226 Difference]: Without dead ends: 17334 [2022-11-02 20:08:46,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 921 GetRequests, 893 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=223, Invalid=647, Unknown=0, NotChecked=0, Total=870 [2022-11-02 20:08:46,942 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 1467 mSDsluCounter, 1336 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1467 SdHoareTripleChecker+Valid, 1476 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:08:46,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1467 Valid, 1476 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:08:46,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17334 states. [2022-11-02 20:08:47,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17334 to 11628. [2022-11-02 20:08:47,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11628 states, 11627 states have (on average 1.3074739829706716) internal successors, (15202), 11627 states have internal predecessors, (15202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:47,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11628 states to 11628 states and 15202 transitions. [2022-11-02 20:08:47,260 INFO L78 Accepts]: Start accepts. Automaton has 11628 states and 15202 transitions. Word has length 455 [2022-11-02 20:08:47,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:08:47,260 INFO L495 AbstractCegarLoop]: Abstraction has 11628 states and 15202 transitions. [2022-11-02 20:08:47,261 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 20:08:47,261 INFO L276 IsEmpty]: Start isEmpty. Operand 11628 states and 15202 transitions. [2022-11-02 20:08:47,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2022-11-02 20:08:47,269 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:47,269 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-02 20:08:47,293 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (56)] Ended with exit code 0 [2022-11-02 20:08:47,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:08:47,470 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:08:47,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:47,470 INFO L85 PathProgramCache]: Analyzing trace with hash -831922133, now seen corresponding path program 2 times [2022-11-02 20:08:47,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:08:47,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [303784125] [2022-11-02 20:08:47,472 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:08:47,472 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:08:47,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:08:47,473 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:08:47,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2022-11-02 20:08:48,051 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:08:48,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:08:48,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 2064 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-02 20:08:48,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:08:48,448 INFO L134 CoverageAnalysis]: Checked inductivity of 1137 backedges. 583 proven. 68 refuted. 0 times theorem prover too weak. 486 trivial. 0 not checked. [2022-11-02 20:08:48,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:08:48,795 INFO L134 CoverageAnalysis]: Checked inductivity of 1137 backedges. 583 proven. 68 refuted. 0 times theorem prover too weak. 486 trivial. 0 not checked. [2022-11-02 20:08:48,795 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:08:48,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [303784125] [2022-11-02 20:08:48,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [303784125] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:08:48,796 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:08:48,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2022-11-02 20:08:48,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411215772] [2022-11-02 20:08:48,796 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:08:48,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 20:08:48,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:08:48,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 20:08:48,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:08:48,798 INFO L87 Difference]: Start difference. First operand 11628 states and 15202 transitions. Second operand has 19 states, 19 states have (on average 14.578947368421053) internal successors, (277), 19 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:51,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:51,958 INFO L93 Difference]: Finished difference Result 134076 states and 175795 transitions. [2022-11-02 20:08:51,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-02 20:08:51,958 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 14.578947368421053) internal successors, (277), 19 states have internal predecessors, (277), 0 states have call successors, (0), 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 455 [2022-11-02 20:08:51,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:08:52,038 INFO L225 Difference]: With dead ends: 134076 [2022-11-02 20:08:52,038 INFO L226 Difference]: Without dead ends: 123450 [2022-11-02 20:08:52,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 954 GetRequests, 891 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1077 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=911, Invalid=3249, Unknown=0, NotChecked=0, Total=4160 [2022-11-02 20:08:52,047 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 4205 mSDsluCounter, 2118 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4205 SdHoareTripleChecker+Valid, 2333 SdHoareTripleChecker+Invalid, 640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:08:52,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4205 Valid, 2333 Invalid, 640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 505 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 20:08:52,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123450 states. [2022-11-02 20:08:53,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123450 to 36184. [2022-11-02 20:08:53,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36184 states, 36183 states have (on average 1.3053091230688445) internal successors, (47230), 36183 states have internal predecessors, (47230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:53,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36184 states to 36184 states and 47230 transitions. [2022-11-02 20:08:53,421 INFO L78 Accepts]: Start accepts. Automaton has 36184 states and 47230 transitions. Word has length 455 [2022-11-02 20:08:53,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:08:53,421 INFO L495 AbstractCegarLoop]: Abstraction has 36184 states and 47230 transitions. [2022-11-02 20:08:53,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 14.578947368421053) internal successors, (277), 19 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:53,421 INFO L276 IsEmpty]: Start isEmpty. Operand 36184 states and 47230 transitions. [2022-11-02 20:08:53,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2022-11-02 20:08:53,446 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:53,447 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2022-11-02 20:08:53,464 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (57)] Forceful destruction successful, exit code 0 [2022-11-02 20:08:53,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:08:53,647 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:08:53,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:53,648 INFO L85 PathProgramCache]: Analyzing trace with hash -206503125, now seen corresponding path program 1 times [2022-11-02 20:08:53,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:08:53,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1778338470] [2022-11-02 20:08:53,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:53,649 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:08:53,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:08:53,651 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:08:53,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2022-11-02 20:08:54,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:54,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 2064 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:08:54,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:08:54,315 INFO L134 CoverageAnalysis]: Checked inductivity of 1137 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 945 trivial. 0 not checked. [2022-11-02 20:08:54,316 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:08:54,316 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:08:54,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1778338470] [2022-11-02 20:08:54,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1778338470] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:08:54,378 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:08:54,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:08:54,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004513848] [2022-11-02 20:08:54,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:08:54,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:08:54,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:08:54,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:08:54,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:08:54,379 INFO L87 Difference]: Start difference. First operand 36184 states and 47230 transitions. Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:55,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:55,261 INFO L93 Difference]: Finished difference Result 89982 states and 117283 transitions. [2022-11-02 20:08:55,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:08:55,262 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 455 [2022-11-02 20:08:55,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:08:55,304 INFO L225 Difference]: With dead ends: 89982 [2022-11-02 20:08:55,304 INFO L226 Difference]: Without dead ends: 53902 [2022-11-02 20:08:55,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 452 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:08:55,319 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 195 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:08:55,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 371 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:08:55,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53902 states. [2022-11-02 20:08:56,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53902 to 36184. [2022-11-02 20:08:56,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36184 states, 36183 states have (on average 1.305253848492386) internal successors, (47228), 36183 states have internal predecessors, (47228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:56,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36184 states to 36184 states and 47228 transitions. [2022-11-02 20:08:56,413 INFO L78 Accepts]: Start accepts. Automaton has 36184 states and 47228 transitions. Word has length 455 [2022-11-02 20:08:56,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:08:56,414 INFO L495 AbstractCegarLoop]: Abstraction has 36184 states and 47228 transitions. [2022-11-02 20:08:56,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:56,414 INFO L276 IsEmpty]: Start isEmpty. Operand 36184 states and 47228 transitions. [2022-11-02 20:08:56,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2022-11-02 20:08:56,454 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:56,455 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2022-11-02 20:08:56,478 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (58)] Forceful destruction successful, exit code 0 [2022-11-02 20:08:56,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:08:56,655 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:08:56,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:56,656 INFO L85 PathProgramCache]: Analyzing trace with hash 735955751, now seen corresponding path program 1 times [2022-11-02 20:08:56,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:08:56,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [693623129] [2022-11-02 20:08:56,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:56,658 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:08:56,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:08:56,659 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:08:56,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (59)] Waiting until timeout for monitored process [2022-11-02 20:08:57,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:57,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 2064 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:08:57,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:08:57,523 INFO L134 CoverageAnalysis]: Checked inductivity of 1137 backedges. 182 proven. 0 refuted. 0 times theorem prover too weak. 955 trivial. 0 not checked. [2022-11-02 20:08:57,523 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:08:57,523 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:08:57,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [693623129] [2022-11-02 20:08:57,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [693623129] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:08:57,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:08:57,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:08:57,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723403931] [2022-11-02 20:08:57,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:08:57,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:08:57,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:08:57,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:08:57,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:08:57,525 INFO L87 Difference]: Start difference. First operand 36184 states and 47228 transitions. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:58,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:58,224 INFO L93 Difference]: Finished difference Result 72299 states and 94385 transitions. [2022-11-02 20:08:58,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:08:58,225 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 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) Word has length 455 [2022-11-02 20:08:58,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:08:58,248 INFO L225 Difference]: With dead ends: 72299 [2022-11-02 20:08:58,248 INFO L226 Difference]: Without dead ends: 36217 [2022-11-02 20:08:58,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 457 GetRequests, 451 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:08:58,258 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 210 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:08:58,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 449 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:08:58,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36217 states. [2022-11-02 20:08:59,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36217 to 36120. [2022-11-02 20:08:59,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36120 states, 36119 states have (on average 1.3056286165176223) internal successors, (47158), 36119 states have internal predecessors, (47158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:59,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36120 states to 36120 states and 47158 transitions. [2022-11-02 20:08:59,247 INFO L78 Accepts]: Start accepts. Automaton has 36120 states and 47158 transitions. Word has length 455 [2022-11-02 20:08:59,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:08:59,247 INFO L495 AbstractCegarLoop]: Abstraction has 36120 states and 47158 transitions. [2022-11-02 20:08:59,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:59,248 INFO L276 IsEmpty]: Start isEmpty. Operand 36120 states and 47158 transitions. [2022-11-02 20:08:59,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2022-11-02 20:08:59,287 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:59,287 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2022-11-02 20:08:59,304 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (59)] Forceful destruction successful, exit code 0 [2022-11-02 20:08:59,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:08:59,488 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:08:59,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:59,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1605629133, now seen corresponding path program 2 times [2022-11-02 20:08:59,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:08:59,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2005762275] [2022-11-02 20:08:59,491 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:08:59,492 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:08:59,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:08:59,493 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:08:59,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (60)] Waiting until timeout for monitored process [2022-11-02 20:09:00,204 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:09:00,204 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:09:00,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 2392 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-02 20:09:00,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:09:00,704 INFO L134 CoverageAnalysis]: Checked inductivity of 1589 backedges. 606 proven. 38 refuted. 0 times theorem prover too weak. 945 trivial. 0 not checked. [2022-11-02 20:09:00,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:09:01,007 INFO L134 CoverageAnalysis]: Checked inductivity of 1589 backedges. 606 proven. 38 refuted. 0 times theorem prover too weak. 945 trivial. 0 not checked. [2022-11-02 20:09:01,008 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:09:01,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2005762275] [2022-11-02 20:09:01,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2005762275] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:09:01,008 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:09:01,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2022-11-02 20:09:01,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405734641] [2022-11-02 20:09:01,009 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:09:01,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 20:09:01,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:09:01,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 20:09:01,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:09:01,010 INFO L87 Difference]: Start difference. First operand 36120 states and 47158 transitions. Second operand has 19 states, 19 states have (on average 13.263157894736842) internal successors, (252), 19 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:09:03,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:09:03,651 INFO L93 Difference]: Finished difference Result 112354 states and 146688 transitions. [2022-11-02 20:09:03,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-02 20:09:03,652 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 13.263157894736842) internal successors, (252), 19 states have internal predecessors, (252), 0 states have call successors, (0), 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 530 [2022-11-02 20:09:03,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:09:03,705 INFO L225 Difference]: With dead ends: 112354 [2022-11-02 20:09:03,705 INFO L226 Difference]: Without dead ends: 76336 [2022-11-02 20:09:03,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1090 GetRequests, 1041 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 518 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=578, Invalid=1972, Unknown=0, NotChecked=0, Total=2550 [2022-11-02 20:09:03,721 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 2821 mSDsluCounter, 1737 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2821 SdHoareTripleChecker+Valid, 1896 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:09:03,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2821 Valid, 1896 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 457 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 20:09:03,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76336 states. [2022-11-02 20:09:04,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76336 to 36120. [2022-11-02 20:09:04,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36120 states, 36119 states have (on average 1.297433483762009) internal successors, (46862), 36119 states have internal predecessors, (46862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:09:04,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36120 states to 36120 states and 46862 transitions. [2022-11-02 20:09:04,908 INFO L78 Accepts]: Start accepts. Automaton has 36120 states and 46862 transitions. Word has length 530 [2022-11-02 20:09:04,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:09:04,908 INFO L495 AbstractCegarLoop]: Abstraction has 36120 states and 46862 transitions. [2022-11-02 20:09:04,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 13.263157894736842) internal successors, (252), 19 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:09:04,908 INFO L276 IsEmpty]: Start isEmpty. Operand 36120 states and 46862 transitions. [2022-11-02 20:09:04,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2022-11-02 20:09:04,935 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:09:04,935 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2022-11-02 20:09:04,955 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (60)] Ended with exit code 0 [2022-11-02 20:09:05,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:09:05,136 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:09:05,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:09:05,137 INFO L85 PathProgramCache]: Analyzing trace with hash -663170257, now seen corresponding path program 2 times [2022-11-02 20:09:05,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:09:05,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1004281828] [2022-11-02 20:09:05,139 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:09:05,139 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:09:05,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:09:05,143 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:09:05,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (61)] Waiting until timeout for monitored process [2022-11-02 20:09:05,793 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:09:05,793 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:09:05,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 2392 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-02 20:09:05,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:09:06,371 INFO L134 CoverageAnalysis]: Checked inductivity of 1589 backedges. 598 proven. 36 refuted. 0 times theorem prover too weak. 955 trivial. 0 not checked. [2022-11-02 20:09:06,371 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:09:06,909 INFO L134 CoverageAnalysis]: Checked inductivity of 1589 backedges. 598 proven. 36 refuted. 0 times theorem prover too weak. 955 trivial. 0 not checked. [2022-11-02 20:09:06,909 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:09:06,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1004281828] [2022-11-02 20:09:06,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1004281828] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:09:06,910 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:09:06,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2022-11-02 20:09:06,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032847530] [2022-11-02 20:09:06,911 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:09:06,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-02 20:09:06,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:09:06,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-02 20:09:06,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2022-11-02 20:09:06,913 INFO L87 Difference]: Start difference. First operand 36120 states and 46862 transitions. Second operand has 24 states, 24 states have (on average 13.416666666666666) internal successors, (322), 24 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:09:09,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:09:09,897 INFO L93 Difference]: Finished difference Result 77510 states and 100647 transitions. [2022-11-02 20:09:09,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-02 20:09:09,897 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 13.416666666666666) internal successors, (322), 24 states have internal predecessors, (322), 0 states have call successors, (0), 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 530 [2022-11-02 20:09:09,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:09:09,923 INFO L225 Difference]: With dead ends: 77510 [2022-11-02 20:09:09,924 INFO L226 Difference]: Without dead ends: 41492 [2022-11-02 20:09:09,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1092 GetRequests, 1036 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 705 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=747, Invalid=2559, Unknown=0, NotChecked=0, Total=3306 [2022-11-02 20:09:09,932 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 3350 mSDsluCounter, 2610 mSDsCounter, 0 mSdLazyCounter, 683 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3350 SdHoareTripleChecker+Valid, 2790 SdHoareTripleChecker+Invalid, 784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:09:09,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3350 Valid, 2790 Invalid, 784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 683 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-02 20:09:09,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41492 states. [2022-11-02 20:09:10,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41492 to 18710. [2022-11-02 20:09:10,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18710 states, 18709 states have (on average 1.2913571008605484) internal successors, (24160), 18709 states have internal predecessors, (24160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:09:10,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18710 states to 18710 states and 24160 transitions. [2022-11-02 20:09:10,472 INFO L78 Accepts]: Start accepts. Automaton has 18710 states and 24160 transitions. Word has length 530 [2022-11-02 20:09:10,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:09:10,472 INFO L495 AbstractCegarLoop]: Abstraction has 18710 states and 24160 transitions. [2022-11-02 20:09:10,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 13.416666666666666) internal successors, (322), 24 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:09:10,473 INFO L276 IsEmpty]: Start isEmpty. Operand 18710 states and 24160 transitions. [2022-11-02 20:09:10,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 606 [2022-11-02 20:09:10,488 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:09:10,488 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 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] [2022-11-02 20:09:10,510 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (61)] Ended with exit code 0 [2022-11-02 20:09:10,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:09:10,689 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:09:10,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:09:10,689 INFO L85 PathProgramCache]: Analyzing trace with hash 2096937067, now seen corresponding path program 3 times [2022-11-02 20:09:10,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:09:10,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1085475380] [2022-11-02 20:09:10,691 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:09:10,691 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:09:10,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:09:10,692 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:09:10,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (62)] Waiting until timeout for monitored process [2022-11-02 20:09:11,040 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-02 20:09:11,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:09:11,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:09:11,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:09:11,928 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 65 proven. 245 refuted. 0 times theorem prover too weak. 1806 trivial. 0 not checked. [2022-11-02 20:09:11,928 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:09:12,938 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 65 proven. 245 refuted. 0 times theorem prover too weak. 1806 trivial. 0 not checked. [2022-11-02 20:09:12,938 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:09:12,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1085475380] [2022-11-02 20:09:12,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1085475380] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:09:12,939 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:09:12,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-11-02 20:09:12,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974566176] [2022-11-02 20:09:12,939 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:09:12,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:09:12,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:09:12,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:09:12,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:09:12,941 INFO L87 Difference]: Start difference. First operand 18710 states and 24160 transitions. Second operand has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 9 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:09:13,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:09:13,698 INFO L93 Difference]: Finished difference Result 50396 states and 65698 transitions. [2022-11-02 20:09:13,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 20:09:13,699 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 9 states have internal predecessors, (151), 0 states have call successors, (0), 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 605 [2022-11-02 20:09:13,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:09:13,719 INFO L225 Difference]: With dead ends: 50396 [2022-11-02 20:09:13,719 INFO L226 Difference]: Without dead ends: 33546 [2022-11-02 20:09:13,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1217 GetRequests, 1199 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=206, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:09:13,725 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 660 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 660 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:09:13,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [660 Valid, 557 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:09:13,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33546 states. [2022-11-02 20:09:14,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33546 to 15838. [2022-11-02 20:09:14,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15838 states, 15837 states have (on average 1.2903959083159688) internal successors, (20436), 15837 states have internal predecessors, (20436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:09:14,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15838 states to 15838 states and 20436 transitions. [2022-11-02 20:09:14,138 INFO L78 Accepts]: Start accepts. Automaton has 15838 states and 20436 transitions. Word has length 605 [2022-11-02 20:09:14,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:09:14,139 INFO L495 AbstractCegarLoop]: Abstraction has 15838 states and 20436 transitions. [2022-11-02 20:09:14,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 9 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:09:14,139 INFO L276 IsEmpty]: Start isEmpty. Operand 15838 states and 20436 transitions. [2022-11-02 20:09:14,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 606 [2022-11-02 20:09:14,155 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:09:14,156 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 3, 3, 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] [2022-11-02 20:09:14,170 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (62)] Forceful destruction successful, exit code 0 [2022-11-02 20:09:14,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:09:14,370 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:09:14,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:09:14,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1550442605, now seen corresponding path program 3 times [2022-11-02 20:09:14,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:09:14,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1476041205] [2022-11-02 20:09:14,372 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:09:14,372 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:09:14,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:09:14,373 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:09:14,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (63)] Waiting until timeout for monitored process [2022-11-02 20:09:14,789 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-02 20:09:14,789 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:09:14,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:09:14,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:09:14,906 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 408 proven. 0 refuted. 0 times theorem prover too weak. 1708 trivial. 0 not checked. [2022-11-02 20:09:14,906 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:09:14,906 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:09:14,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1476041205] [2022-11-02 20:09:14,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1476041205] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:09:14,907 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:09:14,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:09:14,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106050930] [2022-11-02 20:09:14,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:09:14,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:09:14,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:09:14,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:09:14,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:09:14,908 INFO L87 Difference]: Start difference. First operand 15838 states and 20436 transitions. Second operand has 6 states, 6 states have (on average 26.5) internal successors, (159), 6 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 20:09:15,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:09:15,411 INFO L93 Difference]: Finished difference Result 43894 states and 57432 transitions. [2022-11-02 20:09:15,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:09:15,412 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.5) internal successors, (159), 6 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) Word has length 605 [2022-11-02 20:09:15,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:09:15,438 INFO L225 Difference]: With dead ends: 43894 [2022-11-02 20:09:15,438 INFO L226 Difference]: Without dead ends: 36025 [2022-11-02 20:09:15,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 612 GetRequests, 604 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:09:15,447 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 413 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 652 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:09:15,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 652 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:09:15,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36025 states. [2022-11-02 20:09:15,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36025 to 22062. [2022-11-02 20:09:15,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22062 states, 22061 states have (on average 1.2968133810797335) internal successors, (28609), 22061 states have internal predecessors, (28609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:09:16,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22062 states to 22062 states and 28609 transitions. [2022-11-02 20:09:16,012 INFO L78 Accepts]: Start accepts. Automaton has 22062 states and 28609 transitions. Word has length 605 [2022-11-02 20:09:16,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:09:16,012 INFO L495 AbstractCegarLoop]: Abstraction has 22062 states and 28609 transitions. [2022-11-02 20:09:16,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.5) internal successors, (159), 6 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 20:09:16,013 INFO L276 IsEmpty]: Start isEmpty. Operand 22062 states and 28609 transitions. [2022-11-02 20:09:16,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 606 [2022-11-02 20:09:16,029 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:09:16,030 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 3, 3, 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] [2022-11-02 20:09:16,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (63)] Forceful destruction successful, exit code 0 [2022-11-02 20:09:16,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:09:16,241 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:09:16,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:09:16,241 INFO L85 PathProgramCache]: Analyzing trace with hash -136265683, now seen corresponding path program 1 times [2022-11-02 20:09:16,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:09:16,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [724701994] [2022-11-02 20:09:16,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:09:16,243 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:09:16,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:09:16,244 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:09:16,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (64)] Waiting until timeout for monitored process [2022-11-02 20:09:16,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:09:17,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 2720 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:09:17,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:09:17,363 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 889 proven. 72 refuted. 0 times theorem prover too weak. 1155 trivial. 0 not checked. [2022-11-02 20:09:17,363 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:09:17,667 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 900 proven. 61 refuted. 0 times theorem prover too weak. 1155 trivial. 0 not checked. [2022-11-02 20:09:17,667 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:09:17,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [724701994] [2022-11-02 20:09:17,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [724701994] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:09:17,668 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:09:17,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2022-11-02 20:09:17,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963462555] [2022-11-02 20:09:17,668 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:09:17,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-02 20:09:17,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:09:17,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-02 20:09:17,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:09:17,670 INFO L87 Difference]: Start difference. First operand 22062 states and 28609 transitions. Second operand has 17 states, 17 states have (on average 15.588235294117647) internal successors, (265), 17 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:09:18,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:09:18,887 INFO L93 Difference]: Finished difference Result 54362 states and 71059 transitions. [2022-11-02 20:09:18,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-02 20:09:18,887 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 15.588235294117647) internal successors, (265), 17 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 605 [2022-11-02 20:09:18,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:09:18,912 INFO L225 Difference]: With dead ends: 54362 [2022-11-02 20:09:18,912 INFO L226 Difference]: Without dead ends: 32402 [2022-11-02 20:09:19,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1221 GetRequests, 1193 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=223, Invalid=647, Unknown=0, NotChecked=0, Total=870 [2022-11-02 20:09:19,022 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 1261 mSDsluCounter, 1417 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1261 SdHoareTripleChecker+Valid, 1561 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:09:19,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1261 Valid, 1561 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 20:09:19,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32402 states. [2022-11-02 20:09:19,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32402 to 22560. [2022-11-02 20:09:19,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22560 states, 22559 states have (on average 1.2927878008776985) internal successors, (29164), 22559 states have internal predecessors, (29164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:09:19,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22560 states to 22560 states and 29164 transitions. [2022-11-02 20:09:19,478 INFO L78 Accepts]: Start accepts. Automaton has 22560 states and 29164 transitions. Word has length 605 [2022-11-02 20:09:19,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:09:19,478 INFO L495 AbstractCegarLoop]: Abstraction has 22560 states and 29164 transitions. [2022-11-02 20:09:19,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 15.588235294117647) internal successors, (265), 17 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:09:19,479 INFO L276 IsEmpty]: Start isEmpty. Operand 22560 states and 29164 transitions. [2022-11-02 20:09:19,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 606 [2022-11-02 20:09:19,495 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:09:19,496 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 3, 3, 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] [2022-11-02 20:09:19,516 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (64)] Forceful destruction successful, exit code 0 [2022-11-02 20:09:19,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:09:19,697 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:09:19,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:09:19,697 INFO L85 PathProgramCache]: Analyzing trace with hash 551151597, now seen corresponding path program 2 times [2022-11-02 20:09:19,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:09:19,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [305986634] [2022-11-02 20:09:19,699 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:09:19,699 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:09:19,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:09:19,700 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:09:19,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (65)] Waiting until timeout for monitored process [2022-11-02 20:09:20,438 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:09:20,438 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:09:20,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 2720 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:09:20,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:09:20,807 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 899 proven. 74 refuted. 0 times theorem prover too weak. 1143 trivial. 0 not checked. [2022-11-02 20:09:20,808 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:09:21,129 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 910 proven. 63 refuted. 0 times theorem prover too weak. 1143 trivial. 0 not checked. [2022-11-02 20:09:21,130 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:09:21,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [305986634] [2022-11-02 20:09:21,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [305986634] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:09:21,130 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:09:21,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2022-11-02 20:09:21,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127229733] [2022-11-02 20:09:21,131 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:09:21,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-02 20:09:21,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:09:21,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-02 20:09:21,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:09:21,133 INFO L87 Difference]: Start difference. First operand 22560 states and 29164 transitions. Second operand has 17 states, 17 states have (on average 15.764705882352942) internal successors, (268), 17 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:09:22,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:09:22,113 INFO L93 Difference]: Finished difference Result 34868 states and 46102 transitions. [2022-11-02 20:09:22,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-02 20:09:22,113 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 15.764705882352942) internal successors, (268), 17 states have internal predecessors, (268), 0 states have call successors, (0), 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 605 [2022-11-02 20:09:22,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:09:22,130 INFO L225 Difference]: With dead ends: 34868 [2022-11-02 20:09:22,130 INFO L226 Difference]: Without dead ends: 20451 [2022-11-02 20:09:22,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1221 GetRequests, 1193 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=223, Invalid=647, Unknown=0, NotChecked=0, Total=870 [2022-11-02 20:09:22,138 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 1574 mSDsluCounter, 1073 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1574 SdHoareTripleChecker+Valid, 1222 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:09:22,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1574 Valid, 1222 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:09:22,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20451 states. [2022-11-02 20:09:22,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20451 to 14201. [2022-11-02 20:09:22,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14201 states, 14200 states have (on average 1.3069014084507042) internal successors, (18558), 14200 states have internal predecessors, (18558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:09:22,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14201 states to 14201 states and 18558 transitions. [2022-11-02 20:09:22,449 INFO L78 Accepts]: Start accepts. Automaton has 14201 states and 18558 transitions. Word has length 605 [2022-11-02 20:09:22,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:09:22,450 INFO L495 AbstractCegarLoop]: Abstraction has 14201 states and 18558 transitions. [2022-11-02 20:09:22,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 15.764705882352942) internal successors, (268), 17 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:09:22,450 INFO L276 IsEmpty]: Start isEmpty. Operand 14201 states and 18558 transitions. [2022-11-02 20:09:22,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 606 [2022-11-02 20:09:22,457 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:09:22,458 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:09:22,483 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (65)] Ended with exit code 0 [2022-11-02 20:09:22,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:09:22,658 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:09:22,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:09:22,659 INFO L85 PathProgramCache]: Analyzing trace with hash -283647763, now seen corresponding path program 1 times [2022-11-02 20:09:22,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:09:22,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1263561938] [2022-11-02 20:09:22,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:09:22,660 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:09:22,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:09:22,662 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:09:22,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (66)] Waiting until timeout for monitored process [2022-11-02 20:09:23,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:09:23,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 2720 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:09:23,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:09:24,037 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 1002 proven. 108 refuted. 0 times theorem prover too weak. 1006 trivial. 0 not checked. [2022-11-02 20:09:24,037 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:09:24,403 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 1002 proven. 108 refuted. 0 times theorem prover too weak. 1006 trivial. 0 not checked. [2022-11-02 20:09:24,403 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:09:24,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1263561938] [2022-11-02 20:09:24,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1263561938] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:09:24,403 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:09:24,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-11-02 20:09:24,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746927319] [2022-11-02 20:09:24,403 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:09:24,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:09:24,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:09:24,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:09:24,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:09:24,406 INFO L87 Difference]: Start difference. First operand 14201 states and 18558 transitions. Second operand has 11 states, 11 states have (on average 30.09090909090909) internal successors, (331), 11 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:09:25,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:09:25,206 INFO L93 Difference]: Finished difference Result 53656 states and 70260 transitions. [2022-11-02 20:09:25,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:09:25,207 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 30.09090909090909) internal successors, (331), 11 states have internal predecessors, (331), 0 states have call successors, (0), 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 605 [2022-11-02 20:09:25,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:09:25,243 INFO L225 Difference]: With dead ends: 53656 [2022-11-02 20:09:25,243 INFO L226 Difference]: Without dead ends: 39541 [2022-11-02 20:09:25,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1216 GetRequests, 1199 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:09:25,259 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 1024 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1024 SdHoareTripleChecker+Valid, 876 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:09:25,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1024 Valid, 876 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:09:25,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39541 states. [2022-11-02 20:09:26,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39541 to 28314. [2022-11-02 20:09:26,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28314 states, 28313 states have (on average 1.3026878112527813) internal successors, (36883), 28313 states have internal predecessors, (36883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:09:26,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28314 states to 28314 states and 36883 transitions. [2022-11-02 20:09:26,118 INFO L78 Accepts]: Start accepts. Automaton has 28314 states and 36883 transitions. Word has length 605 [2022-11-02 20:09:26,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:09:26,119 INFO L495 AbstractCegarLoop]: Abstraction has 28314 states and 36883 transitions. [2022-11-02 20:09:26,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 30.09090909090909) internal successors, (331), 11 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:09:26,119 INFO L276 IsEmpty]: Start isEmpty. Operand 28314 states and 36883 transitions. [2022-11-02 20:09:26,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 606 [2022-11-02 20:09:26,134 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:09:26,134 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:09:26,158 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (66)] Ended with exit code 0 [2022-11-02 20:09:26,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:09:26,335 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:09:26,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:09:26,335 INFO L85 PathProgramCache]: Analyzing trace with hash 666940455, now seen corresponding path program 2 times [2022-11-02 20:09:26,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:09:26,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1732023451] [2022-11-02 20:09:26,337 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:09:26,337 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:09:26,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:09:26,338 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:09:26,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (67)] Waiting until timeout for monitored process [2022-11-02 20:09:27,081 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:09:27,081 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:09:27,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 2720 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-02 20:09:27,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:09:27,684 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 1008 proven. 77 refuted. 0 times theorem prover too weak. 1031 trivial. 0 not checked. [2022-11-02 20:09:27,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:09:28,096 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 1082 proven. 3 refuted. 0 times theorem prover too weak. 1031 trivial. 0 not checked. [2022-11-02 20:09:28,097 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:09:28,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1732023451] [2022-11-02 20:09:28,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1732023451] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:09:28,097 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:09:28,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2022-11-02 20:09:28,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901207557] [2022-11-02 20:09:28,098 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:09:28,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-02 20:09:28,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:09:28,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-02 20:09:28,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-11-02 20:09:28,100 INFO L87 Difference]: Start difference. First operand 28314 states and 36883 transitions. Second operand has 15 states, 15 states have (on average 20.133333333333333) internal successors, (302), 15 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:09:28,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:09:28,386 INFO L93 Difference]: Finished difference Result 28766 states and 37390 transitions. [2022-11-02 20:09:28,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:09:28,387 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 20.133333333333333) internal successors, (302), 15 states have internal predecessors, (302), 0 states have call successors, (0), 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 605 [2022-11-02 20:09:28,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:09:28,387 INFO L225 Difference]: With dead ends: 28766 [2022-11-02 20:09:28,387 INFO L226 Difference]: Without dead ends: 0 [2022-11-02 20:09:28,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1213 GetRequests, 1194 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2022-11-02 20:09:28,395 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 524 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 524 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:09:28,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [524 Valid, 575 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:09:28,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-02 20:09:28,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-02 20:09:28,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:09:28,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-02 20:09:28,396 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 605 [2022-11-02 20:09:28,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:09:28,396 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-02 20:09:28,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 20.133333333333333) internal successors, (302), 15 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:09:28,397 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-02 20:09:28,397 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-02 20:09:28,399 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-02 20:09:28,420 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (67)] Ended with exit code 0 [2022-11-02 20:09:28,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4b3d9a9-655c-40b0-b41e-bec151da9688/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:09:28,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.