./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p01.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/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_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p01.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/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_54cd81d2-98af-4d77-83c9-daf468db94e2/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 3571a4d134092328a8008b483fb2c66f804865f192db9dfc7ab8efafa98cdcb6 --- 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 20:32:57,756 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:32:57,760 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:32:57,820 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:32:57,821 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:32:57,826 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:32:57,829 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:32:57,834 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:32:57,836 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:32:57,843 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:32:57,844 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:32:57,847 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:32:57,848 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:32:57,851 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:32:57,854 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:32:57,856 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:32:57,859 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:32:57,861 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:32:57,864 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:32:57,876 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:32:57,880 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:32:57,882 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:32:57,883 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:32:57,886 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:32:57,893 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:32:57,898 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:32:57,899 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:32:57,900 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:32:57,902 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:32:57,904 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:32:57,905 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:32:57,906 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:32:57,909 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:32:57,910 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:32:57,912 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:32:57,912 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:32:57,914 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:32:57,914 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:32:57,914 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:32:57,915 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:32:57,916 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:32:57,917 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-02 20:32:57,973 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:32:57,974 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:32:57,974 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:32:57,975 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:32:57,976 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:32:57,976 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:32:57,977 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:32:57,978 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:32:57,978 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:32:57,978 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:32:57,980 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:32:57,980 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:32:57,980 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:32:57,981 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:32:57,981 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:32:57,981 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:32:57,981 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:32:57,982 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:32:57,982 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:32:57,982 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:32:57,983 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:32:57,983 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:32:57,983 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:32:57,983 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:32:57,984 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:32:57,984 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:32:57,986 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:32:57,986 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:32:57,987 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:32:57,987 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:32:57,987 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_54cd81d2-98af-4d77-83c9-daf468db94e2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3571a4d134092328a8008b483fb2c66f804865f192db9dfc7ab8efafa98cdcb6 [2022-11-02 20:32:58,287 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:32:58,339 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:32:58,343 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:32:58,345 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:32:58,347 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:32:58,348 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p01.c [2022-11-02 20:32:58,462 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/data/39d5369ae/0db192506e8542a5bd7e4c9a95311eb0/FLAG6edae93e7 [2022-11-02 20:32:59,182 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:32:59,183 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p01.c [2022-11-02 20:32:59,199 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/data/39d5369ae/0db192506e8542a5bd7e4c9a95311eb0/FLAG6edae93e7 [2022-11-02 20:32:59,462 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/data/39d5369ae/0db192506e8542a5bd7e4c9a95311eb0 [2022-11-02 20:32:59,466 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:32:59,467 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:32:59,470 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:32:59,470 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:32:59,476 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:32:59,477 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:32:59" (1/1) ... [2022-11-02 20:32:59,479 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ccedd9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:32:59, skipping insertion in model container [2022-11-02 20:32:59,480 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:32:59" (1/1) ... [2022-11-02 20:32:59,490 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:32:59,557 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:32:59,797 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_54cd81d2-98af-4d77-83c9-daf468db94e2/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p01.c[1107,1120] [2022-11-02 20:32:59,938 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:32:59,955 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:32:59,971 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_54cd81d2-98af-4d77-83c9-daf468db94e2/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p01.c[1107,1120] [2022-11-02 20:33:00,123 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:33:00,149 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:33:00,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:00 WrapperNode [2022-11-02 20:33:00,152 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:33:00,154 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:33:00,154 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:33:00,155 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:33:00,164 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:00" (1/1) ... [2022-11-02 20:33:00,198 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:00" (1/1) ... [2022-11-02 20:33:00,279 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 604 [2022-11-02 20:33:00,280 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:33:00,281 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:33:00,281 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:33:00,281 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:33:00,293 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:00" (1/1) ... [2022-11-02 20:33:00,294 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:00" (1/1) ... [2022-11-02 20:33:00,301 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:00" (1/1) ... [2022-11-02 20:33:00,302 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:00" (1/1) ... [2022-11-02 20:33:00,320 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:00" (1/1) ... [2022-11-02 20:33:00,327 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:00" (1/1) ... [2022-11-02 20:33:00,332 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:00" (1/1) ... [2022-11-02 20:33:00,336 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:00" (1/1) ... [2022-11-02 20:33:00,351 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:33:00,352 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:33:00,353 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:33:00,362 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:33:00,364 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:00" (1/1) ... [2022-11-02 20:33:00,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:33:00,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:33:00,412 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:33:00,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:33:00,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:33:00,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:33:00,675 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:33:00,678 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:33:01,674 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:33:01,692 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:33:01,693 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 20:33:01,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:33:01 BoogieIcfgContainer [2022-11-02 20:33:01,696 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:33:01,700 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:33:01,700 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:33:01,705 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:33:01,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:32:59" (1/3) ... [2022-11-02 20:33:01,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30fbceb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:33:01, skipping insertion in model container [2022-11-02 20:33:01,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:00" (2/3) ... [2022-11-02 20:33:01,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30fbceb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:33:01, skipping insertion in model container [2022-11-02 20:33:01,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:33:01" (3/3) ... [2022-11-02 20:33:01,709 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p01.c [2022-11-02 20:33:01,733 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:33:01,734 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:33:01,830 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:33:01,841 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;@42b70eb2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:33:01,843 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:33:01,857 INFO L276 IsEmpty]: Start isEmpty. Operand has 95 states, 93 states have (on average 1.4946236559139785) internal successors, (139), 94 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:01,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 20:33:01,868 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:01,869 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 20:33:01,870 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:01,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:01,880 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-02 20:33:01,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:33:01,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310922804] [2022-11-02 20:33:01,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:01,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:33:02,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:33:02,262 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:33:02,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:33:02,473 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:33:02,478 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:33:02,481 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-02 20:33:02,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:33:02,490 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-02 20:33:02,497 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 20:33:02,545 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-02 20:33:02,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 08:33:02 BoogieIcfgContainer [2022-11-02 20:33:02,567 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 20:33:02,570 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 20:33:02,570 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 20:33:02,571 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 20:33:02,571 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:33:01" (3/4) ... [2022-11-02 20:33:02,575 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-02 20:33:02,575 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 20:33:02,577 INFO L158 Benchmark]: Toolchain (without parser) took 3109.34ms. Allocated memory is still 123.7MB. Free memory was 90.8MB in the beginning and 82.1MB in the end (delta: 8.7MB). Peak memory consumption was 8.0MB. Max. memory is 16.1GB. [2022-11-02 20:33:02,579 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 92.3MB. Free memory was 50.0MB in the beginning and 50.0MB in the end (delta: 18.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:33:02,580 INFO L158 Benchmark]: CACSL2BoogieTranslator took 683.09ms. Allocated memory is still 123.7MB. Free memory was 90.5MB in the beginning and 90.2MB in the end (delta: 353.9kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-02 20:33:02,582 INFO L158 Benchmark]: Boogie Procedure Inliner took 126.53ms. Allocated memory is still 123.7MB. Free memory was 90.2MB in the beginning and 84.0MB in the end (delta: 6.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-02 20:33:02,583 INFO L158 Benchmark]: Boogie Preprocessor took 70.36ms. Allocated memory is still 123.7MB. Free memory was 84.0MB in the beginning and 80.3MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-02 20:33:02,590 INFO L158 Benchmark]: RCFGBuilder took 1344.60ms. Allocated memory is still 123.7MB. Free memory was 80.3MB in the beginning and 74.8MB in the end (delta: 5.5MB). Peak memory consumption was 30.9MB. Max. memory is 16.1GB. [2022-11-02 20:33:02,591 INFO L158 Benchmark]: TraceAbstraction took 867.44ms. Allocated memory is still 123.7MB. Free memory was 73.9MB in the beginning and 82.8MB in the end (delta: -9.0MB). Peak memory consumption was 30.1MB. Max. memory is 16.1GB. [2022-11-02 20:33:02,593 INFO L158 Benchmark]: Witness Printer took 5.71ms. Allocated memory is still 123.7MB. Free memory was 82.8MB in the beginning and 82.1MB in the end (delta: 726.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:33:02,601 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 92.3MB. Free memory was 50.0MB in the beginning and 50.0MB in the end (delta: 18.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 683.09ms. Allocated memory is still 123.7MB. Free memory was 90.5MB in the beginning and 90.2MB in the end (delta: 353.9kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 126.53ms. Allocated memory is still 123.7MB. Free memory was 90.2MB in the beginning and 84.0MB in the end (delta: 6.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 70.36ms. Allocated memory is still 123.7MB. Free memory was 84.0MB in the beginning and 80.3MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1344.60ms. Allocated memory is still 123.7MB. Free memory was 80.3MB in the beginning and 74.8MB in the end (delta: 5.5MB). Peak memory consumption was 30.9MB. Max. memory is 16.1GB. * TraceAbstraction took 867.44ms. Allocated memory is still 123.7MB. Free memory was 73.9MB in the beginning and 82.8MB in the end (delta: -9.0MB). Peak memory consumption was 30.1MB. Max. memory is 16.1GB. * Witness Printer took 5.71ms. Allocated memory is still 123.7MB. Free memory was 82.8MB in the beginning and 82.1MB in the end (delta: 726.4kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseComplement at line 156, overapproximation of bitwiseOr at line 165, overapproximation of bitwiseAnd at line 150. 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_68 mask_SORT_68 = (SORT_68)-1 >> (sizeof(SORT_68) * 8 - 10); [L38] const SORT_68 msb_SORT_68 = (SORT_68)1 << (10 - 1); [L40] const SORT_1 var_7 = 0; [L41] const SORT_10 var_12 = 1; [L42] const SORT_1 var_22 = 1; [L43] const SORT_68 var_69 = 0; [L44] const SORT_10 var_119 = 104; [L46] SORT_1 input_2; [L47] SORT_3 input_4; [L48] SORT_1 input_5; [L49] SORT_1 input_6; [L50] SORT_1 input_30; [L51] SORT_32 input_33; [L52] SORT_1 input_35; [L53] SORT_32 input_37; [L54] SORT_1 input_39; [L55] SORT_1 input_45; [L56] SORT_1 input_47; [L57] SORT_1 input_49; [L58] SORT_3 input_53; [L59] SORT_1 input_56; [L60] SORT_1 input_66; [L61] SORT_1 input_74; [L62] SORT_1 input_80; [L63] SORT_1 input_81; [L64] SORT_1 input_95; [L65] SORT_1 input_101; [L66] SORT_1 input_107; [L67] SORT_1 input_113; [L68] SORT_1 input_114; [L69] SORT_1 input_115; [L70] SORT_1 input_132; [L71] SORT_68 input_139; [L72] SORT_1 input_147; [L73] SORT_1 input_148; [L74] SORT_1 input_149; [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_41 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L81] SORT_1 state_43 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L82] SORT_1 state_51 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L83] SORT_1 state_58 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L84] SORT_1 state_60 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L85] SORT_1 state_62 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L86] SORT_1 state_64 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L87] SORT_68 state_70 = __VERIFIER_nondet_ushort() & mask_SORT_68; [L88] SORT_1 state_72 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L90] SORT_1 init_9_arg_1 = var_7; [L91] state_8 = init_9_arg_1 [L92] SORT_1 init_16_arg_1 = var_7; [L93] state_15 = init_16_arg_1 [L94] SORT_1 init_27_arg_1 = var_7; [L95] state_26 = init_27_arg_1 [L96] SORT_1 init_29_arg_1 = var_7; [L97] state_28 = init_29_arg_1 [L98] SORT_1 init_42_arg_1 = var_7; [L99] state_41 = init_42_arg_1 [L100] SORT_1 init_44_arg_1 = var_7; [L101] state_43 = init_44_arg_1 [L102] SORT_1 init_52_arg_1 = var_22; [L103] state_51 = init_52_arg_1 [L104] SORT_1 init_59_arg_1 = var_7; [L105] state_58 = init_59_arg_1 [L106] SORT_1 init_61_arg_1 = var_7; [L107] state_60 = init_61_arg_1 [L108] SORT_1 init_63_arg_1 = var_7; [L109] state_62 = init_63_arg_1 [L110] SORT_1 init_65_arg_1 = var_7; [L111] state_64 = init_65_arg_1 [L112] SORT_68 init_71_arg_1 = var_69; [L113] state_70 = init_71_arg_1 [L114] SORT_1 init_73_arg_1 = var_7; [L115] state_72 = init_73_arg_1 VAL [init_16_arg_1=0, init_27_arg_1=0, init_29_arg_1=0, init_42_arg_1=0, init_44_arg_1=0, init_52_arg_1=1, init_59_arg_1=0, init_61_arg_1=0, init_63_arg_1=0, init_65_arg_1=0, init_71_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_68=1023, msb_SORT_1=1, msb_SORT_10=2147483648, msb_SORT_3=128, msb_SORT_32=8, msb_SORT_68=512, state_15=0, state_26=0, state_28=0, state_41=0, state_43=0, state_51=1, state_58=0, state_60=0, state_62=0, state_64=0, state_70=0, state_72=0, state_8=0, var_119=104, var_12=1, var_22=1, var_69=0, var_7=0] [L118] input_2 = __VERIFIER_nondet_uchar() [L119] input_4 = __VERIFIER_nondet_uchar() [L120] input_5 = __VERIFIER_nondet_uchar() [L121] input_6 = __VERIFIER_nondet_uchar() [L122] input_30 = __VERIFIER_nondet_uchar() [L123] input_33 = __VERIFIER_nondet_uchar() [L124] input_35 = __VERIFIER_nondet_uchar() [L125] input_37 = __VERIFIER_nondet_uchar() [L126] input_39 = __VERIFIER_nondet_uchar() [L127] input_45 = __VERIFIER_nondet_uchar() [L128] input_47 = __VERIFIER_nondet_uchar() [L129] input_49 = __VERIFIER_nondet_uchar() [L130] input_53 = __VERIFIER_nondet_uchar() [L131] input_56 = __VERIFIER_nondet_uchar() [L132] input_66 = __VERIFIER_nondet_uchar() [L133] input_74 = __VERIFIER_nondet_uchar() [L134] input_80 = __VERIFIER_nondet_uchar() [L135] input_81 = __VERIFIER_nondet_uchar() [L136] input_95 = __VERIFIER_nondet_uchar() [L137] input_101 = __VERIFIER_nondet_uchar() [L138] input_107 = __VERIFIER_nondet_uchar() [L139] input_113 = __VERIFIER_nondet_uchar() [L140] input_114 = __VERIFIER_nondet_uchar() [L141] input_115 = __VERIFIER_nondet_uchar() [L142] input_132 = __VERIFIER_nondet_uchar() [L143] input_139 = __VERIFIER_nondet_ushort() [L144] input_147 = __VERIFIER_nondet_uchar() [L145] input_148 = __VERIFIER_nondet_uchar() [L146] input_149 = __VERIFIER_nondet_uchar() [L149] SORT_1 var_11_arg_0 = state_8; [L150] var_11_arg_0 = var_11_arg_0 & mask_SORT_1 [L151] SORT_10 var_11 = var_11_arg_0; [L152] SORT_10 var_13_arg_0 = var_11; [L153] SORT_10 var_13_arg_1 = var_12; [L154] SORT_1 var_13 = var_13_arg_0 == var_13_arg_1; [L155] SORT_1 var_14_arg_0 = var_13; [L156] SORT_1 var_14 = ~var_14_arg_0; [L157] SORT_1 var_17_arg_0 = state_15; [L158] var_17_arg_0 = var_17_arg_0 & mask_SORT_1 [L159] SORT_10 var_17 = var_17_arg_0; [L160] SORT_10 var_18_arg_0 = var_17; [L161] SORT_10 var_18_arg_1 = var_12; [L162] SORT_1 var_18 = var_18_arg_0 == var_18_arg_1; [L163] SORT_1 var_19_arg_0 = var_14; [L164] SORT_1 var_19_arg_1 = var_18; [L165] SORT_1 var_19 = var_19_arg_0 | var_19_arg_1; [L166] SORT_1 var_23_arg_0 = var_19; [L167] SORT_1 var_23 = ~var_23_arg_0; [L168] SORT_1 var_24_arg_0 = var_22; [L169] SORT_1 var_24_arg_1 = var_23; [L170] SORT_1 var_24 = var_24_arg_0 & var_24_arg_1; [L171] var_24 = var_24 & mask_SORT_1 [L172] SORT_1 bad_25_arg_0 = var_24; [L173] 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, 95 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=95occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-02 20:33:02,667 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/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_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p01.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/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_54cd81d2-98af-4d77-83c9-daf468db94e2/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 3571a4d134092328a8008b483fb2c66f804865f192db9dfc7ab8efafa98cdcb6 --- 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 20:33:05,583 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:33:05,586 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:33:05,644 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:33:05,645 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:33:05,651 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:33:05,654 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:33:05,662 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:33:05,669 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:33:05,671 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:33:05,672 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:33:05,676 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:33:05,677 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:33:05,686 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:33:05,689 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:33:05,691 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:33:05,693 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:33:05,696 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:33:05,698 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:33:05,704 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:33:05,713 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:33:05,715 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:33:05,717 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:33:05,718 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:33:05,723 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:33:05,723 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:33:05,723 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:33:05,725 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:33:05,725 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:33:05,727 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:33:05,727 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:33:05,728 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:33:05,729 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:33:05,731 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:33:05,732 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:33:05,732 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:33:05,733 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:33:05,734 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:33:05,734 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:33:05,736 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:33:05,737 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:33:05,738 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-02 20:33:05,766 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:33:05,766 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:33:05,767 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:33:05,767 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:33:05,768 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:33:05,768 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:33:05,769 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:33:05,770 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:33:05,770 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:33:05,770 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:33:05,771 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:33:05,771 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:33:05,771 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:33:05,771 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:33:05,772 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-02 20:33:05,772 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-02 20:33:05,772 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-02 20:33:05,772 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:33:05,773 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:33:05,773 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:33:05,773 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:33:05,774 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:33:05,774 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:33:05,774 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:33:05,775 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:33:05,775 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:33:05,775 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:33:05,775 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-02 20:33:05,776 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-02 20:33:05,776 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:33:05,776 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:33:05,777 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:33:05,777 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-02 20:33:05,777 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_54cd81d2-98af-4d77-83c9-daf468db94e2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3571a4d134092328a8008b483fb2c66f804865f192db9dfc7ab8efafa98cdcb6 [2022-11-02 20:33:06,198 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:33:06,225 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:33:06,229 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:33:06,230 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:33:06,231 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:33:06,233 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p01.c [2022-11-02 20:33:06,319 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/data/e035b53de/07fe5644a64d473783839f4575c4ee55/FLAG8d1050ce5 [2022-11-02 20:33:07,052 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:33:07,056 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p01.c [2022-11-02 20:33:07,075 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/data/e035b53de/07fe5644a64d473783839f4575c4ee55/FLAG8d1050ce5 [2022-11-02 20:33:07,296 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/data/e035b53de/07fe5644a64d473783839f4575c4ee55 [2022-11-02 20:33:07,299 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:33:07,301 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:33:07,303 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:33:07,304 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:33:07,309 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:33:07,311 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:33:07" (1/1) ... [2022-11-02 20:33:07,315 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32edcc11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:07, skipping insertion in model container [2022-11-02 20:33:07,317 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:33:07" (1/1) ... [2022-11-02 20:33:07,327 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:33:07,363 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:33:07,533 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_54cd81d2-98af-4d77-83c9-daf468db94e2/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p01.c[1107,1120] [2022-11-02 20:33:07,767 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:33:07,772 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:33:07,789 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_54cd81d2-98af-4d77-83c9-daf468db94e2/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p01.c[1107,1120] [2022-11-02 20:33:07,864 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:33:07,880 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:33:07,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:07 WrapperNode [2022-11-02 20:33:07,881 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:33:07,883 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:33:07,883 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:33:07,883 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:33:07,893 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:07" (1/1) ... [2022-11-02 20:33:07,910 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:07" (1/1) ... [2022-11-02 20:33:07,962 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 604 [2022-11-02 20:33:07,963 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:33:07,964 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:33:07,964 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:33:07,964 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:33:07,987 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:07" (1/1) ... [2022-11-02 20:33:07,988 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:07" (1/1) ... [2022-11-02 20:33:08,012 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:07" (1/1) ... [2022-11-02 20:33:08,012 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:07" (1/1) ... [2022-11-02 20:33:08,045 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:07" (1/1) ... [2022-11-02 20:33:08,053 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:07" (1/1) ... [2022-11-02 20:33:08,065 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:07" (1/1) ... [2022-11-02 20:33:08,070 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:07" (1/1) ... [2022-11-02 20:33:08,078 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:33:08,079 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:33:08,094 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:33:08,095 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:33:08,096 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:07" (1/1) ... [2022-11-02 20:33:08,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:33:08,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:33:08,144 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:33:08,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:33:08,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:33:08,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:33:08,440 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:33:08,443 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:33:09,389 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:33:09,400 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:33:09,407 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 20:33:09,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:33:09 BoogieIcfgContainer [2022-11-02 20:33:09,411 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:33:09,414 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:33:09,416 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:33:09,420 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:33:09,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:33:07" (1/3) ... [2022-11-02 20:33:09,422 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@460bd86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:33:09, skipping insertion in model container [2022-11-02 20:33:09,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:33:07" (2/3) ... [2022-11-02 20:33:09,423 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@460bd86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:33:09, skipping insertion in model container [2022-11-02 20:33:09,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:33:09" (3/3) ... [2022-11-02 20:33:09,425 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p01.c [2022-11-02 20:33:09,452 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:33:09,453 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:33:09,556 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:33:09,565 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;@365d7e21, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:33:09,566 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:33:09,572 INFO L276 IsEmpty]: Start isEmpty. Operand has 95 states, 93 states have (on average 1.4946236559139785) internal successors, (139), 94 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:09,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 20:33:09,580 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:09,581 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 20:33:09,582 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:09,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:09,590 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-02 20:33:09,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:33:09,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1304720179] [2022-11-02 20:33:09,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:09,607 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:33:09,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:33:09,609 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:33:09,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-02 20:33:09,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:09,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-02 20:33:09,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:33:10,196 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 20:33:10,197 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:33:10,198 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:33:10,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1304720179] [2022-11-02 20:33:10,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1304720179] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:33:10,199 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:33:10,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:33:10,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980125712] [2022-11-02 20:33:10,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:33:10,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:33:10,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:33:10,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:33:10,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:33:10,249 INFO L87 Difference]: Start difference. First operand has 95 states, 93 states have (on average 1.4946236559139785) internal successors, (139), 94 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:10,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:10,500 INFO L93 Difference]: Finished difference Result 272 states and 408 transitions. [2022-11-02 20:33:10,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:33:10,505 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 20:33:10,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:10,537 INFO L225 Difference]: With dead ends: 272 [2022-11-02 20:33:10,538 INFO L226 Difference]: Without dead ends: 179 [2022-11-02 20:33:10,542 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 20:33:10,547 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 255 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:33:10,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 367 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:33:10,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2022-11-02 20:33:10,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 93. [2022-11-02 20:33:10,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 1.4673913043478262) internal successors, (135), 92 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:10,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 135 transitions. [2022-11-02 20:33:10,611 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 135 transitions. Word has length 5 [2022-11-02 20:33:10,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:10,611 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 135 transitions. [2022-11-02 20:33:10,612 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 20:33:10,612 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 135 transitions. [2022-11-02 20:33:10,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-02 20:33:10,617 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:10,617 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:33:10,636 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:33:10,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:33:10,818 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:10,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:10,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1914847655, now seen corresponding path program 1 times [2022-11-02 20:33:10,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:33:10,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [46564566] [2022-11-02 20:33:10,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:10,822 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:33:10,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:33:10,824 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:33:10,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-02 20:33:11,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:11,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:33:11,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:33:11,242 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 20:33:11,243 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:33:11,243 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:33:11,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [46564566] [2022-11-02 20:33:11,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [46564566] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:33:11,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:33:11,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:33:11,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273608788] [2022-11-02 20:33:11,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:33:11,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:33:11,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:33:11,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:33:11,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:33:11,248 INFO L87 Difference]: Start difference. First operand 93 states and 135 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:11,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:11,298 INFO L93 Difference]: Finished difference Result 355 states and 522 transitions. [2022-11-02 20:33:11,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:33:11,299 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-11-02 20:33:11,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:11,301 INFO L225 Difference]: With dead ends: 355 [2022-11-02 20:33:11,301 INFO L226 Difference]: Without dead ends: 266 [2022-11-02 20:33:11,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:33:11,304 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 378 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 513 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 20:33:11,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [378 Valid, 513 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:33:11,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-11-02 20:33:11,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 95. [2022-11-02 20:33:11,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.4574468085106382) internal successors, (137), 94 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:11,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 137 transitions. [2022-11-02 20:33:11,317 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 137 transitions. Word has length 92 [2022-11-02 20:33:11,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:11,318 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 137 transitions. [2022-11-02 20:33:11,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:11,318 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 137 transitions. [2022-11-02 20:33:11,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-02 20:33:11,321 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:11,321 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:33:11,345 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:33:11,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:33:11,536 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:11,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:11,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1328571433, now seen corresponding path program 1 times [2022-11-02 20:33:11,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:33:11,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [753240596] [2022-11-02 20:33:11,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:11,538 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:33:11,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:33:11,540 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:33:11,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-02 20:33:11,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:11,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:33:11,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:33:12,001 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 20:33:12,002 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:33:12,002 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:33:12,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [753240596] [2022-11-02 20:33:12,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [753240596] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:33:12,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:33:12,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:33:12,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364365606] [2022-11-02 20:33:12,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:33:12,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:33:12,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:33:12,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:33:12,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:33:12,006 INFO L87 Difference]: Start difference. First operand 95 states and 137 transitions. Second operand has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:12,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:12,301 INFO L93 Difference]: Finished difference Result 274 states and 400 transitions. [2022-11-02 20:33:12,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:33:12,302 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-11-02 20:33:12,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:12,304 INFO L225 Difference]: With dead ends: 274 [2022-11-02 20:33:12,304 INFO L226 Difference]: Without dead ends: 185 [2022-11-02 20:33:12,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:33:12,306 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 377 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 377 SdHoareTripleChecker+Valid, 599 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:33:12,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [377 Valid, 599 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:33:12,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2022-11-02 20:33:12,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 97. [2022-11-02 20:33:12,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 1.4479166666666667) internal successors, (139), 96 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:12,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 139 transitions. [2022-11-02 20:33:12,333 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 139 transitions. Word has length 92 [2022-11-02 20:33:12,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:12,334 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 139 transitions. [2022-11-02 20:33:12,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:12,335 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 139 transitions. [2022-11-02 20:33:12,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-02 20:33:12,341 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:12,343 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:33:12,362 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:33:12,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:33:12,557 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:12,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:12,558 INFO L85 PathProgramCache]: Analyzing trace with hash -547911385, now seen corresponding path program 1 times [2022-11-02 20:33:12,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:33:12,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1293002366] [2022-11-02 20:33:12,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:12,560 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:33:12,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:33:12,562 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:33:12,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-02 20:33:12,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:12,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:33:12,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:33:12,981 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 20:33:12,982 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:33:12,982 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:33:12,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1293002366] [2022-11-02 20:33:12,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1293002366] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:33:12,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:33:12,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:33:12,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647610382] [2022-11-02 20:33:12,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:33:12,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:33:12,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:33:12,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:33:12,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:33:12,986 INFO L87 Difference]: Start difference. First operand 97 states and 139 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:13,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:13,045 INFO L93 Difference]: Finished difference Result 355 states and 520 transitions. [2022-11-02 20:33:13,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:33:13,046 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-11-02 20:33:13,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:13,048 INFO L225 Difference]: With dead ends: 355 [2022-11-02 20:33:13,048 INFO L226 Difference]: Without dead ends: 266 [2022-11-02 20:33:13,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:33:13,050 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 366 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:33:13,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [366 Valid, 502 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:33:13,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-11-02 20:33:13,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 99. [2022-11-02 20:33:13,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 1.4387755102040816) internal successors, (141), 98 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:13,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 141 transitions. [2022-11-02 20:33:13,062 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 141 transitions. Word has length 92 [2022-11-02 20:33:13,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:13,062 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 141 transitions. [2022-11-02 20:33:13,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:13,063 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 141 transitions. [2022-11-02 20:33:13,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-02 20:33:13,065 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:13,065 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:33:13,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:33:13,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:33:13,283 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:13,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:13,284 INFO L85 PathProgramCache]: Analyzing trace with hash 776944809, now seen corresponding path program 1 times [2022-11-02 20:33:13,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:33:13,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [377922235] [2022-11-02 20:33:13,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:13,285 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:33:13,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:33:13,286 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:33:13,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-02 20:33:13,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:13,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:33:13,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:33:13,711 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:33:13,711 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:33:13,712 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:33:13,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [377922235] [2022-11-02 20:33:13,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [377922235] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:33:13,713 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:33:13,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:33:13,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246939829] [2022-11-02 20:33:13,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:33:13,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:33:13,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:33:13,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:33:13,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:33:13,715 INFO L87 Difference]: Start difference. First operand 99 states and 141 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:13,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:13,768 INFO L93 Difference]: Finished difference Result 355 states and 519 transitions. [2022-11-02 20:33:13,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:33:13,769 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-11-02 20:33:13,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:13,771 INFO L225 Difference]: With dead ends: 355 [2022-11-02 20:33:13,771 INFO L226 Difference]: Without dead ends: 266 [2022-11-02 20:33:13,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:33:13,773 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 360 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:33:13,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 501 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:33:13,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-11-02 20:33:13,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 101. [2022-11-02 20:33:13,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 1.43) internal successors, (143), 100 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:13,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 143 transitions. [2022-11-02 20:33:13,798 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 143 transitions. Word has length 92 [2022-11-02 20:33:13,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:13,801 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 143 transitions. [2022-11-02 20:33:13,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:13,802 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 143 transitions. [2022-11-02 20:33:13,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-02 20:33:13,805 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:13,806 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:33:13,822 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:33:14,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:33:14,011 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:14,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:14,012 INFO L85 PathProgramCache]: Analyzing trace with hash -280893269, now seen corresponding path program 1 times [2022-11-02 20:33:14,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:33:14,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1968499456] [2022-11-02 20:33:14,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:14,013 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:33:14,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:33:14,014 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:33:14,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-02 20:33:14,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:14,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:33:14,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:33:14,398 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:33:14,410 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:33:14,411 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:33:14,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1968499456] [2022-11-02 20:33:14,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1968499456] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:33:14,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:33:14,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:33:14,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206242552] [2022-11-02 20:33:14,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:33:14,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:33:14,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:33:14,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:33:14,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:33:14,420 INFO L87 Difference]: Start difference. First operand 101 states and 143 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:14,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:14,490 INFO L93 Difference]: Finished difference Result 355 states and 518 transitions. [2022-11-02 20:33:14,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:33:14,491 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-11-02 20:33:14,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:14,492 INFO L225 Difference]: With dead ends: 355 [2022-11-02 20:33:14,493 INFO L226 Difference]: Without dead ends: 266 [2022-11-02 20:33:14,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:33:14,501 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 349 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:33:14,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [349 Valid, 500 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:33:14,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-11-02 20:33:14,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 105. [2022-11-02 20:33:14,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 104 states have (on average 1.4230769230769231) internal successors, (148), 104 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:14,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 148 transitions. [2022-11-02 20:33:14,524 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 148 transitions. Word has length 92 [2022-11-02 20:33:14,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:14,524 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 148 transitions. [2022-11-02 20:33:14,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:14,525 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 148 transitions. [2022-11-02 20:33:14,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-02 20:33:14,532 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:14,533 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:33:14,556 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-11-02 20:33:14,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:33:14,747 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:14,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:14,747 INFO L85 PathProgramCache]: Analyzing trace with hash -253827667, now seen corresponding path program 1 times [2022-11-02 20:33:14,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:33:14,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1941502504] [2022-11-02 20:33:14,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:14,748 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:33:14,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:33:14,750 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:33:14,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-02 20:33:15,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:15,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:33:15,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:33:15,124 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 20:33:15,124 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:33:15,124 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:33:15,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1941502504] [2022-11-02 20:33:15,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1941502504] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:33:15,125 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:33:15,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:33:15,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134349113] [2022-11-02 20:33:15,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:33:15,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:33:15,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:33:15,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:33:15,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:33:15,128 INFO L87 Difference]: Start difference. First operand 105 states and 148 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:15,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:15,182 INFO L93 Difference]: Finished difference Result 355 states and 517 transitions. [2022-11-02 20:33:15,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:33:15,183 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-11-02 20:33:15,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:15,185 INFO L225 Difference]: With dead ends: 355 [2022-11-02 20:33:15,185 INFO L226 Difference]: Without dead ends: 266 [2022-11-02 20:33:15,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:33:15,186 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 338 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:33:15,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [338 Valid, 499 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:33:15,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-11-02 20:33:15,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 109. [2022-11-02 20:33:15,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 1.4166666666666667) internal successors, (153), 108 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:15,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 153 transitions. [2022-11-02 20:33:15,195 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 153 transitions. Word has length 92 [2022-11-02 20:33:15,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:15,195 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 153 transitions. [2022-11-02 20:33:15,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:15,196 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 153 transitions. [2022-11-02 20:33:15,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-02 20:33:15,197 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:15,198 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:33:15,222 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-02 20:33:15,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:33:15,415 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:15,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:15,416 INFO L85 PathProgramCache]: Analyzing trace with hash 2130097071, now seen corresponding path program 1 times [2022-11-02 20:33:15,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:33:15,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1063718392] [2022-11-02 20:33:15,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:15,416 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:33:15,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:33:15,418 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:33:15,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-02 20:33:15,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:15,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:33:15,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:33:15,818 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 20:33:15,819 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:33:15,819 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:33:15,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1063718392] [2022-11-02 20:33:15,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1063718392] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:33:15,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:33:15,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:33:15,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984404373] [2022-11-02 20:33:15,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:33:15,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:33:15,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:33:15,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:33:15,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:33:15,824 INFO L87 Difference]: Start difference. First operand 109 states and 153 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:15,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:15,883 INFO L93 Difference]: Finished difference Result 355 states and 516 transitions. [2022-11-02 20:33:15,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:33:15,884 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-11-02 20:33:15,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:15,886 INFO L225 Difference]: With dead ends: 355 [2022-11-02 20:33:15,886 INFO L226 Difference]: Without dead ends: 266 [2022-11-02 20:33:15,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:33:15,888 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 327 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:33:15,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [327 Valid, 498 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:33:15,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-11-02 20:33:15,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 113. [2022-11-02 20:33:15,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 1.4107142857142858) internal successors, (158), 112 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:15,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 158 transitions. [2022-11-02 20:33:15,898 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 158 transitions. Word has length 92 [2022-11-02 20:33:15,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:15,899 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 158 transitions. [2022-11-02 20:33:15,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:15,899 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 158 transitions. [2022-11-02 20:33:15,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-02 20:33:15,900 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:15,901 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:33:15,923 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-02 20:33:16,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:33:16,115 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:16,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:16,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1637470897, now seen corresponding path program 1 times [2022-11-02 20:33:16,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:33:16,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1878814642] [2022-11-02 20:33:16,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:16,117 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:33:16,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:33:16,118 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:33:16,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-02 20:33:16,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:16,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:33:16,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:33:16,510 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 20:33:16,510 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:33:16,511 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:33:16,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1878814642] [2022-11-02 20:33:16,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1878814642] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:33:16,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:33:16,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:33:16,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898595259] [2022-11-02 20:33:16,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:33:16,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:33:16,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:33:16,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:33:16,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:33:16,515 INFO L87 Difference]: Start difference. First operand 113 states and 158 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:16,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:16,555 INFO L93 Difference]: Finished difference Result 355 states and 515 transitions. [2022-11-02 20:33:16,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:33:16,556 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-11-02 20:33:16,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:16,560 INFO L225 Difference]: With dead ends: 355 [2022-11-02 20:33:16,560 INFO L226 Difference]: Without dead ends: 266 [2022-11-02 20:33:16,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:33:16,565 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 321 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 506 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 20:33:16,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [321 Valid, 506 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:33:16,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-11-02 20:33:16,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 115. [2022-11-02 20:33:16,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 114 states have (on average 1.4035087719298245) internal successors, (160), 114 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:16,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 160 transitions. [2022-11-02 20:33:16,572 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 160 transitions. Word has length 92 [2022-11-02 20:33:16,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:16,574 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 160 transitions. [2022-11-02 20:33:16,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:16,575 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 160 transitions. [2022-11-02 20:33:16,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-02 20:33:16,577 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:16,577 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:33:16,600 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-02 20:33:16,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:33:16,794 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:16,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:16,795 INFO L85 PathProgramCache]: Analyzing trace with hash 421317171, now seen corresponding path program 1 times [2022-11-02 20:33:16,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:33:16,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2009246169] [2022-11-02 20:33:16,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:16,796 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:33:16,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:33:16,798 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:33:16,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-02 20:33:17,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:17,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:33:17,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:33:17,145 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 20:33:17,146 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:33:17,146 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:33:17,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2009246169] [2022-11-02 20:33:17,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2009246169] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:33:17,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:33:17,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:33:17,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649625082] [2022-11-02 20:33:17,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:33:17,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:33:17,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:33:17,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:33:17,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:33:17,149 INFO L87 Difference]: Start difference. First operand 115 states and 160 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:17,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:17,187 INFO L93 Difference]: Finished difference Result 355 states and 514 transitions. [2022-11-02 20:33:17,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:33:17,188 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-11-02 20:33:17,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:17,190 INFO L225 Difference]: With dead ends: 355 [2022-11-02 20:33:17,190 INFO L226 Difference]: Without dead ends: 266 [2022-11-02 20:33:17,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:33:17,192 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 315 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 505 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 20:33:17,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [315 Valid, 505 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:33:17,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-11-02 20:33:17,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 117. [2022-11-02 20:33:17,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 116 states have (on average 1.396551724137931) internal successors, (162), 116 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:17,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 162 transitions. [2022-11-02 20:33:17,199 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 162 transitions. Word has length 92 [2022-11-02 20:33:17,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:17,200 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 162 transitions. [2022-11-02 20:33:17,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:17,200 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 162 transitions. [2022-11-02 20:33:17,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-02 20:33:17,201 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:17,201 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:33:17,220 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-02 20:33:17,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:33:17,419 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:17,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:17,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1264862667, now seen corresponding path program 1 times [2022-11-02 20:33:17,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:33:17,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1944899225] [2022-11-02 20:33:17,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:17,421 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:33:17,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:33:17,422 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:33:17,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-02 20:33:17,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:17,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:33:17,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:33:17,795 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 20:33:17,795 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:33:17,795 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:33:17,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1944899225] [2022-11-02 20:33:17,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1944899225] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:33:17,796 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:33:17,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:33:17,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132761540] [2022-11-02 20:33:17,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:33:17,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:33:17,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:33:17,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:33:17,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:33:17,799 INFO L87 Difference]: Start difference. First operand 117 states and 162 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:17,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:17,846 INFO L93 Difference]: Finished difference Result 355 states and 513 transitions. [2022-11-02 20:33:17,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:33:17,847 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-11-02 20:33:17,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:17,849 INFO L225 Difference]: With dead ends: 355 [2022-11-02 20:33:17,849 INFO L226 Difference]: Without dead ends: 266 [2022-11-02 20:33:17,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:33:17,851 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 304 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 501 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 20:33:17,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 501 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:33:17,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-11-02 20:33:17,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 121. [2022-11-02 20:33:17,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 120 states have (on average 1.3916666666666666) internal successors, (167), 120 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:17,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 167 transitions. [2022-11-02 20:33:17,858 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 167 transitions. Word has length 92 [2022-11-02 20:33:17,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:17,858 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 167 transitions. [2022-11-02 20:33:17,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:17,859 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 167 transitions. [2022-11-02 20:33:17,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-02 20:33:17,860 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:17,860 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:33:17,877 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-02 20:33:18,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:33:18,077 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:18,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:18,077 INFO L85 PathProgramCache]: Analyzing trace with hash 696711991, now seen corresponding path program 1 times [2022-11-02 20:33:18,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:33:18,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [731117260] [2022-11-02 20:33:18,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:18,078 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:33:18,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:33:18,080 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:33:18,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-02 20:33:18,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:18,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:33:18,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:33:18,466 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 20:33:18,467 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:33:18,467 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:33:18,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [731117260] [2022-11-02 20:33:18,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [731117260] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:33:18,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:33:18,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:33:18,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136887325] [2022-11-02 20:33:18,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:33:18,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:33:18,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:33:18,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:33:18,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:33:18,470 INFO L87 Difference]: Start difference. First operand 121 states and 167 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:18,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:18,536 INFO L93 Difference]: Finished difference Result 355 states and 512 transitions. [2022-11-02 20:33:18,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:33:18,537 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-11-02 20:33:18,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:18,539 INFO L225 Difference]: With dead ends: 355 [2022-11-02 20:33:18,539 INFO L226 Difference]: Without dead ends: 266 [2022-11-02 20:33:18,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:33:18,540 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 298 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:33:18,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 500 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:33:18,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-11-02 20:33:18,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 123. [2022-11-02 20:33:18,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 122 states have (on average 1.3852459016393444) internal successors, (169), 122 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:18,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 169 transitions. [2022-11-02 20:33:18,548 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 169 transitions. Word has length 92 [2022-11-02 20:33:18,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:18,548 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 169 transitions. [2022-11-02 20:33:18,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:18,549 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 169 transitions. [2022-11-02 20:33:18,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-02 20:33:18,550 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:18,550 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:33:18,573 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-02 20:33:18,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:33:18,773 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:18,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:18,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1257411769, now seen corresponding path program 1 times [2022-11-02 20:33:18,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:33:18,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1211787168] [2022-11-02 20:33:18,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:18,775 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:33:18,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:33:18,776 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:33:18,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-02 20:33:19,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:19,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:33:19,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:33:19,167 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 20:33:19,168 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:33:19,168 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:33:19,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1211787168] [2022-11-02 20:33:19,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1211787168] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:33:19,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:33:19,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:33:19,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289538238] [2022-11-02 20:33:19,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:33:19,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:33:19,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:33:19,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:33:19,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:33:19,171 INFO L87 Difference]: Start difference. First operand 123 states and 169 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:19,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:19,228 INFO L93 Difference]: Finished difference Result 355 states and 511 transitions. [2022-11-02 20:33:19,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:33:19,230 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-11-02 20:33:19,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:19,232 INFO L225 Difference]: With dead ends: 355 [2022-11-02 20:33:19,233 INFO L226 Difference]: Without dead ends: 266 [2022-11-02 20:33:19,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:33:19,235 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 287 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 493 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 20:33:19,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 493 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:33:19,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-11-02 20:33:19,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 127. [2022-11-02 20:33:19,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.380952380952381) internal successors, (174), 126 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:19,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 174 transitions. [2022-11-02 20:33:19,244 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 174 transitions. Word has length 92 [2022-11-02 20:33:19,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:19,246 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 174 transitions. [2022-11-02 20:33:19,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:19,246 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 174 transitions. [2022-11-02 20:33:19,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-02 20:33:19,247 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:19,248 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:33:19,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-02 20:33:19,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:33:19,465 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:19,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:19,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1650770117, now seen corresponding path program 1 times [2022-11-02 20:33:19,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:33:19,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1587586825] [2022-11-02 20:33:19,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:19,466 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:33:19,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:33:19,468 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:33:19,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-02 20:33:19,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:19,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:33:19,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:33:19,892 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 20:33:19,892 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:33:19,892 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:33:19,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1587586825] [2022-11-02 20:33:19,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1587586825] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:33:19,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:33:19,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:33:19,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29959514] [2022-11-02 20:33:19,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:33:19,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:33:19,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:33:19,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:33:19,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:33:19,895 INFO L87 Difference]: Start difference. First operand 127 states and 174 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:19,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:19,952 INFO L93 Difference]: Finished difference Result 355 states and 510 transitions. [2022-11-02 20:33:19,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:33:19,953 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-11-02 20:33:19,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:19,955 INFO L225 Difference]: With dead ends: 355 [2022-11-02 20:33:19,955 INFO L226 Difference]: Without dead ends: 266 [2022-11-02 20:33:19,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:33:19,957 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 271 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 492 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 20:33:19,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 492 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:33:19,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-11-02 20:33:19,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 133. [2022-11-02 20:33:19,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 1.378787878787879) internal successors, (182), 132 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 20:33:19,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 182 transitions. [2022-11-02 20:33:19,966 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 182 transitions. Word has length 92 [2022-11-02 20:33:19,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:19,967 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 182 transitions. [2022-11-02 20:33:19,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:19,967 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 182 transitions. [2022-11-02 20:33:19,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-02 20:33:19,969 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:19,969 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:33:19,994 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-02 20:33:20,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:33:20,183 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:20,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:20,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1666288835, now seen corresponding path program 1 times [2022-11-02 20:33:20,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:33:20,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [331572863] [2022-11-02 20:33:20,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:20,185 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:33:20,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:33:20,187 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:33:20,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-02 20:33:20,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:20,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:33:20,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:33:20,748 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 20:33:20,748 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:33:20,749 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:33:20,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [331572863] [2022-11-02 20:33:20,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [331572863] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:33:20,749 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:33:20,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:33:20,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660207353] [2022-11-02 20:33:20,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:33:20,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:33:20,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:33:20,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:33:20,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:33:20,752 INFO L87 Difference]: Start difference. First operand 133 states and 182 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:20,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:20,875 INFO L93 Difference]: Finished difference Result 355 states and 509 transitions. [2022-11-02 20:33:20,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:33:20,876 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-11-02 20:33:20,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:20,877 INFO L225 Difference]: With dead ends: 355 [2022-11-02 20:33:20,877 INFO L226 Difference]: Without dead ends: 266 [2022-11-02 20:33:20,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:33:20,879 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 265 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:33:20,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 458 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:33:20,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-11-02 20:33:20,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 135. [2022-11-02 20:33:20,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 134 states have (on average 1.373134328358209) internal successors, (184), 134 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 20:33:20,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 184 transitions. [2022-11-02 20:33:20,887 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 184 transitions. Word has length 92 [2022-11-02 20:33:20,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:20,888 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 184 transitions. [2022-11-02 20:33:20,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:20,888 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 184 transitions. [2022-11-02 20:33:20,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-02 20:33:20,889 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:20,890 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:33:20,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-02 20:33:21,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:33:21,107 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:21,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:21,107 INFO L85 PathProgramCache]: Analyzing trace with hash -2019377217, now seen corresponding path program 1 times [2022-11-02 20:33:21,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:33:21,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [184330259] [2022-11-02 20:33:21,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:21,108 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:33:21,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:33:21,109 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:33:21,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-02 20:33:21,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:21,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:33:21,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:33:21,834 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 20:33:21,835 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:33:21,835 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:33:21,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [184330259] [2022-11-02 20:33:21,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [184330259] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:33:21,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:33:21,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:33:21,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576058166] [2022-11-02 20:33:21,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:33:21,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:33:21,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:33:21,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:33:21,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:33:21,838 INFO L87 Difference]: Start difference. First operand 135 states and 184 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:21,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:21,953 INFO L93 Difference]: Finished difference Result 400 states and 573 transitions. [2022-11-02 20:33:21,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:33:21,954 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-11-02 20:33:21,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:21,956 INFO L225 Difference]: With dead ends: 400 [2022-11-02 20:33:21,956 INFO L226 Difference]: Without dead ends: 311 [2022-11-02 20:33:21,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:33:21,957 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 453 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 738 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 20:33:21,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [453 Valid, 738 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:33:21,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2022-11-02 20:33:21,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 137. [2022-11-02 20:33:21,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 136 states have (on average 1.3676470588235294) internal successors, (186), 136 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 20:33:21,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 186 transitions. [2022-11-02 20:33:21,965 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 186 transitions. Word has length 92 [2022-11-02 20:33:21,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:21,966 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 186 transitions. [2022-11-02 20:33:21,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:21,966 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 186 transitions. [2022-11-02 20:33:21,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-02 20:33:21,967 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:21,968 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:33:21,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-02 20:33:22,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:33:22,184 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:22,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:22,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1125890879, now seen corresponding path program 1 times [2022-11-02 20:33:22,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:33:22,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [139029643] [2022-11-02 20:33:22,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:22,186 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:33:22,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:33:22,188 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:33:22,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-02 20:33:22,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:22,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:33:22,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:33:22,593 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 20:33:22,594 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:33:22,594 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:33:22,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [139029643] [2022-11-02 20:33:22,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [139029643] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:33:22,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:33:22,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:33:22,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658933820] [2022-11-02 20:33:22,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:33:22,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:33:22,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:33:22,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:33:22,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:33:22,597 INFO L87 Difference]: Start difference. First operand 137 states and 186 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:22,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:22,669 INFO L93 Difference]: Finished difference Result 355 states and 507 transitions. [2022-11-02 20:33:22,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:33:22,670 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-11-02 20:33:22,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:22,671 INFO L225 Difference]: With dead ends: 355 [2022-11-02 20:33:22,672 INFO L226 Difference]: Without dead ends: 266 [2022-11-02 20:33:22,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:33:22,673 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 253 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:33:22,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 477 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:33:22,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-11-02 20:33:22,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 139. [2022-11-02 20:33:22,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 138 states have (on average 1.3623188405797102) internal successors, (188), 138 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 20:33:22,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 188 transitions. [2022-11-02 20:33:22,680 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 188 transitions. Word has length 92 [2022-11-02 20:33:22,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:22,681 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 188 transitions. [2022-11-02 20:33:22,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:22,681 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 188 transitions. [2022-11-02 20:33:22,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-02 20:33:22,682 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:22,682 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:33:22,700 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-02 20:33:22,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:33:22,899 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:22,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:22,900 INFO L85 PathProgramCache]: Analyzing trace with hash -2023284157, now seen corresponding path program 1 times [2022-11-02 20:33:22,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:33:22,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1534148440] [2022-11-02 20:33:22,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:22,901 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:33:22,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:33:22,903 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:33:22,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-02 20:33:23,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:23,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:33:23,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:33:23,620 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 20:33:23,620 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:33:23,621 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:33:23,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1534148440] [2022-11-02 20:33:23,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1534148440] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:33:23,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:33:23,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:33:23,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026175975] [2022-11-02 20:33:23,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:33:23,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:33:23,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:33:23,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:33:23,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:33:23,627 INFO L87 Difference]: Start difference. First operand 139 states and 188 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:23,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:23,746 INFO L93 Difference]: Finished difference Result 400 states and 571 transitions. [2022-11-02 20:33:23,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:33:23,755 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-11-02 20:33:23,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:23,756 INFO L225 Difference]: With dead ends: 400 [2022-11-02 20:33:23,756 INFO L226 Difference]: Without dead ends: 311 [2022-11-02 20:33:23,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:33:23,758 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 439 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 439 SdHoareTripleChecker+Valid, 730 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 20:33:23,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [439 Valid, 730 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:33:23,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2022-11-02 20:33:23,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 141. [2022-11-02 20:33:23,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 140 states have (on average 1.3571428571428572) internal successors, (190), 140 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 20:33:23,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 190 transitions. [2022-11-02 20:33:23,767 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 190 transitions. Word has length 92 [2022-11-02 20:33:23,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:23,767 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 190 transitions. [2022-11-02 20:33:23,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:23,768 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 190 transitions. [2022-11-02 20:33:23,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-02 20:33:23,769 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:23,769 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:33:23,798 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-02 20:33:23,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:33:23,986 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:23,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:23,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1599637435, now seen corresponding path program 1 times [2022-11-02 20:33:23,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:33:23,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1929668064] [2022-11-02 20:33:23,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:23,987 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:33:23,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:33:23,988 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:33:23,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-02 20:33:24,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:24,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:33:24,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:33:24,391 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 20:33:24,392 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:33:24,392 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:33:24,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1929668064] [2022-11-02 20:33:24,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1929668064] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:33:24,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:33:24,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:33:24,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856454128] [2022-11-02 20:33:24,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:33:24,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:33:24,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:33:24,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:33:24,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:33:24,395 INFO L87 Difference]: Start difference. First operand 141 states and 190 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:24,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:24,464 INFO L93 Difference]: Finished difference Result 355 states and 505 transitions. [2022-11-02 20:33:24,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:33:24,466 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-11-02 20:33:24,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:24,468 INFO L225 Difference]: With dead ends: 355 [2022-11-02 20:33:24,468 INFO L226 Difference]: Without dead ends: 266 [2022-11-02 20:33:24,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:33:24,470 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 236 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:33:24,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 475 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:33:24,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-11-02 20:33:24,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 145. [2022-11-02 20:33:24,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.3541666666666667) internal successors, (195), 144 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 20:33:24,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 195 transitions. [2022-11-02 20:33:24,475 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 195 transitions. Word has length 92 [2022-11-02 20:33:24,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:24,475 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 195 transitions. [2022-11-02 20:33:24,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:24,476 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 195 transitions. [2022-11-02 20:33:24,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-02 20:33:24,477 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:24,477 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:33:24,501 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-02 20:33:24,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:33:24,695 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:24,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:24,695 INFO L85 PathProgramCache]: Analyzing trace with hash -940105913, now seen corresponding path program 1 times [2022-11-02 20:33:24,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:33:24,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [353205874] [2022-11-02 20:33:24,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:24,696 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:33:24,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:33:24,697 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:33:24,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-02 20:33:24,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:24,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:33:24,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:33:25,133 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 20:33:25,133 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:33:25,133 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:33:25,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [353205874] [2022-11-02 20:33:25,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [353205874] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:33:25,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:33:25,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:33:25,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625504669] [2022-11-02 20:33:25,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:33:25,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:33:25,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:33:25,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:33:25,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:33:25,137 INFO L87 Difference]: Start difference. First operand 145 states and 195 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:25,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:25,191 INFO L93 Difference]: Finished difference Result 355 states and 504 transitions. [2022-11-02 20:33:25,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:33:25,192 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-11-02 20:33:25,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:25,193 INFO L225 Difference]: With dead ends: 355 [2022-11-02 20:33:25,194 INFO L226 Difference]: Without dead ends: 266 [2022-11-02 20:33:25,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:33:25,195 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 230 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 486 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 20:33:25,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 486 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:33:25,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-11-02 20:33:25,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 147. [2022-11-02 20:33:25,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 1.3493150684931507) internal successors, (197), 146 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 20:33:25,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 197 transitions. [2022-11-02 20:33:25,203 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 197 transitions. Word has length 92 [2022-11-02 20:33:25,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:25,204 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 197 transitions. [2022-11-02 20:33:25,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:25,204 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 197 transitions. [2022-11-02 20:33:25,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-02 20:33:25,205 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:25,206 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:33:25,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-02 20:33:25,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:33:25,428 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:25,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:25,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1784111415, now seen corresponding path program 1 times [2022-11-02 20:33:25,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:33:25,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1517855406] [2022-11-02 20:33:25,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:25,429 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:33:25,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:33:25,431 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:33:25,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-02 20:33:25,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:25,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:33:25,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:33:25,876 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 20:33:25,877 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:33:25,877 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:33:25,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1517855406] [2022-11-02 20:33:25,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1517855406] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:33:25,878 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:33:25,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:33:25,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272104375] [2022-11-02 20:33:25,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:33:25,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:33:25,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:33:25,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:33:25,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:33:25,881 INFO L87 Difference]: Start difference. First operand 147 states and 197 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:25,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:25,919 INFO L93 Difference]: Finished difference Result 355 states and 503 transitions. [2022-11-02 20:33:25,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:33:25,920 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-11-02 20:33:25,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:25,922 INFO L225 Difference]: With dead ends: 355 [2022-11-02 20:33:25,922 INFO L226 Difference]: Without dead ends: 266 [2022-11-02 20:33:25,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:33:25,924 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 224 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 494 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 20:33:25,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 494 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:33:25,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-11-02 20:33:25,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 149. [2022-11-02 20:33:25,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 1.3445945945945945) internal successors, (199), 148 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:25,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 199 transitions. [2022-11-02 20:33:25,935 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 199 transitions. Word has length 92 [2022-11-02 20:33:25,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:25,936 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 199 transitions. [2022-11-02 20:33:25,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:25,936 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 199 transitions. [2022-11-02 20:33:25,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-02 20:33:25,937 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:25,938 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:33:25,964 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-02 20:33:26,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:33:26,155 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:26,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:26,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1856497973, now seen corresponding path program 1 times [2022-11-02 20:33:26,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:33:26,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [584020002] [2022-11-02 20:33:26,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:26,157 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:33:26,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:33:26,158 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:33:26,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-02 20:33:26,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:26,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:33:26,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:33:26,570 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 20:33:26,570 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:33:26,570 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:33:26,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [584020002] [2022-11-02 20:33:26,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [584020002] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:33:26,571 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:33:26,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:33:26,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564322241] [2022-11-02 20:33:26,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:33:26,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:33:26,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:33:26,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:33:26,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:33:26,573 INFO L87 Difference]: Start difference. First operand 149 states and 199 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:26,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:26,608 INFO L93 Difference]: Finished difference Result 355 states and 502 transitions. [2022-11-02 20:33:26,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:33:26,609 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-11-02 20:33:26,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:26,611 INFO L225 Difference]: With dead ends: 355 [2022-11-02 20:33:26,611 INFO L226 Difference]: Without dead ends: 266 [2022-11-02 20:33:26,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:33:26,613 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 218 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 493 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 20:33:26,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 493 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:33:26,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-11-02 20:33:26,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 151. [2022-11-02 20:33:26,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 150 states have (on average 1.34) internal successors, (201), 150 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:26,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 201 transitions. [2022-11-02 20:33:26,620 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 201 transitions. Word has length 92 [2022-11-02 20:33:26,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:26,621 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 201 transitions. [2022-11-02 20:33:26,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:26,621 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 201 transitions. [2022-11-02 20:33:26,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-02 20:33:26,622 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:26,623 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:33:26,640 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-02 20:33:26,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:33:26,840 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:26,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:26,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1154898099, now seen corresponding path program 1 times [2022-11-02 20:33:26,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:33:26,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1114652279] [2022-11-02 20:33:26,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:26,841 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:33:26,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:33:26,842 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:33:26,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-02 20:33:27,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:27,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:33:27,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:33:27,266 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 20:33:27,266 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:33:27,266 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:33:27,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1114652279] [2022-11-02 20:33:27,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1114652279] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:33:27,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:33:27,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:33:27,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314360077] [2022-11-02 20:33:27,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:33:27,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:33:27,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:33:27,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:33:27,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:33:27,269 INFO L87 Difference]: Start difference. First operand 151 states and 201 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:27,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:27,319 INFO L93 Difference]: Finished difference Result 355 states and 501 transitions. [2022-11-02 20:33:27,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:33:27,320 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-11-02 20:33:27,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:27,321 INFO L225 Difference]: With dead ends: 355 [2022-11-02 20:33:27,321 INFO L226 Difference]: Without dead ends: 266 [2022-11-02 20:33:27,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:33:27,323 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 207 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 483 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 20:33:27,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 483 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:33:27,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-11-02 20:33:27,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 155. [2022-11-02 20:33:27,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 154 states have (on average 1.3376623376623376) internal successors, (206), 154 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:27,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 206 transitions. [2022-11-02 20:33:27,330 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 206 transitions. Word has length 92 [2022-11-02 20:33:27,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:27,330 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 206 transitions. [2022-11-02 20:33:27,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:27,331 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 206 transitions. [2022-11-02 20:33:27,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-02 20:33:27,332 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:27,332 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:33:27,356 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-02 20:33:27,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:33:27,548 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:27,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:27,549 INFO L85 PathProgramCache]: Analyzing trace with hash 768329935, now seen corresponding path program 1 times [2022-11-02 20:33:27,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:33:27,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [983387615] [2022-11-02 20:33:27,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:27,550 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:33:27,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:33:27,552 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:33:27,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-02 20:33:27,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:27,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:33:27,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:33:27,986 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 20:33:27,987 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:33:27,987 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:33:27,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [983387615] [2022-11-02 20:33:27,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [983387615] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:33:27,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:33:27,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:33:27,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633772336] [2022-11-02 20:33:27,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:33:27,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:33:27,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:33:27,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:33:27,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:33:27,991 INFO L87 Difference]: Start difference. First operand 155 states and 206 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:28,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:28,047 INFO L93 Difference]: Finished difference Result 355 states and 500 transitions. [2022-11-02 20:33:28,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:33:28,048 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-11-02 20:33:28,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:28,049 INFO L225 Difference]: With dead ends: 355 [2022-11-02 20:33:28,050 INFO L226 Difference]: Without dead ends: 266 [2022-11-02 20:33:28,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:33:28,052 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 201 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 482 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 20:33:28,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 482 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:33:28,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-11-02 20:33:28,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 157. [2022-11-02 20:33:28,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 156 states have (on average 1.3333333333333333) internal successors, (208), 156 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:28,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 208 transitions. [2022-11-02 20:33:28,059 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 208 transitions. Word has length 92 [2022-11-02 20:33:28,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:28,060 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 208 transitions. [2022-11-02 20:33:28,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:28,060 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 208 transitions. [2022-11-02 20:33:28,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-02 20:33:28,061 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:28,061 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:33:28,084 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-11-02 20:33:28,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:33:28,278 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:28,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:28,279 INFO L85 PathProgramCache]: Analyzing trace with hash 908878545, now seen corresponding path program 1 times [2022-11-02 20:33:28,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:33:28,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [240125289] [2022-11-02 20:33:28,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:28,280 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:33:28,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:33:28,281 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:33:28,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-02 20:33:28,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:28,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:33:28,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:33:28,714 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:33:28,715 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:33:28,715 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:33:28,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [240125289] [2022-11-02 20:33:28,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [240125289] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:33:28,716 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:33:28,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:33:28,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643372768] [2022-11-02 20:33:28,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:33:28,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:33:28,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:33:28,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:33:28,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:33:28,718 INFO L87 Difference]: Start difference. First operand 157 states and 208 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:28,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:28,764 INFO L93 Difference]: Finished difference Result 355 states and 499 transitions. [2022-11-02 20:33:28,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:33:28,765 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-11-02 20:33:28,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:28,767 INFO L225 Difference]: With dead ends: 355 [2022-11-02 20:33:28,767 INFO L226 Difference]: Without dead ends: 266 [2022-11-02 20:33:28,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:33:28,768 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 195 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 487 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 20:33:28,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 487 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:33:28,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-11-02 20:33:28,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 159. [2022-11-02 20:33:28,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 158 states have (on average 1.3291139240506329) internal successors, (210), 158 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:28,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 210 transitions. [2022-11-02 20:33:28,776 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 210 transitions. Word has length 92 [2022-11-02 20:33:28,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:28,776 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 210 transitions. [2022-11-02 20:33:28,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:28,777 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 210 transitions. [2022-11-02 20:33:28,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-02 20:33:28,778 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:28,778 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:33:28,801 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-11-02 20:33:28,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:33:28,995 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:28,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:28,995 INFO L85 PathProgramCache]: Analyzing trace with hash -896559789, now seen corresponding path program 1 times [2022-11-02 20:33:28,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:33:28,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [81916835] [2022-11-02 20:33:28,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:28,996 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:33:28,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:33:28,997 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:33:28,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-02 20:33:29,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:29,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:33:29,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:33:29,436 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 20:33:29,436 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:33:29,436 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:33:29,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [81916835] [2022-11-02 20:33:29,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [81916835] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:33:29,437 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:33:29,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:33:29,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245439572] [2022-11-02 20:33:29,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:33:29,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:33:29,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:33:29,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:33:29,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:33:29,439 INFO L87 Difference]: Start difference. First operand 159 states and 210 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:29,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:29,505 INFO L93 Difference]: Finished difference Result 355 states and 498 transitions. [2022-11-02 20:33:29,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:33:29,506 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-11-02 20:33:29,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:29,508 INFO L225 Difference]: With dead ends: 355 [2022-11-02 20:33:29,508 INFO L226 Difference]: Without dead ends: 266 [2022-11-02 20:33:29,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:33:29,509 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 184 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:33:29,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 468 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:33:29,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-11-02 20:33:29,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 163. [2022-11-02 20:33:29,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 1.3271604938271604) internal successors, (215), 162 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:29,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 215 transitions. [2022-11-02 20:33:29,517 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 215 transitions. Word has length 92 [2022-11-02 20:33:29,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:29,518 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 215 transitions. [2022-11-02 20:33:29,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:29,518 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 215 transitions. [2022-11-02 20:33:29,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-02 20:33:29,519 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:29,519 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:33:29,543 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-11-02 20:33:29,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:33:29,735 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:29,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:29,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1709463765, now seen corresponding path program 1 times [2022-11-02 20:33:29,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:33:29,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1964879710] [2022-11-02 20:33:29,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:29,736 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:33:29,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:33:29,737 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:33:29,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-02 20:33:29,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:29,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:33:29,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:33:30,145 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 20:33:30,145 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:33:30,145 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:33:30,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1964879710] [2022-11-02 20:33:30,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1964879710] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:33:30,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:33:30,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:33:30,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355116681] [2022-11-02 20:33:30,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:33:30,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:33:30,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:33:30,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:33:30,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:33:30,148 INFO L87 Difference]: Start difference. First operand 163 states and 215 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:30,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:30,213 INFO L93 Difference]: Finished difference Result 355 states and 497 transitions. [2022-11-02 20:33:30,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:33:30,214 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-11-02 20:33:30,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:30,215 INFO L225 Difference]: With dead ends: 355 [2022-11-02 20:33:30,215 INFO L226 Difference]: Without dead ends: 266 [2022-11-02 20:33:30,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:33:30,217 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 178 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:33:30,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 467 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:33:30,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-11-02 20:33:30,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 165. [2022-11-02 20:33:30,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 164 states have (on average 1.3231707317073171) internal successors, (217), 164 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:30,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 217 transitions. [2022-11-02 20:33:30,225 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 217 transitions. Word has length 92 [2022-11-02 20:33:30,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:30,225 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 217 transitions. [2022-11-02 20:33:30,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:30,226 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 217 transitions. [2022-11-02 20:33:30,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-02 20:33:30,227 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:30,227 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:33:30,243 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (28)] Ended with exit code 0 [2022-11-02 20:33:30,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:33:30,442 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:30,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:30,443 INFO L85 PathProgramCache]: Analyzing trace with hash 121115863, now seen corresponding path program 1 times [2022-11-02 20:33:30,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:33:30,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1447974000] [2022-11-02 20:33:30,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:30,444 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:33:30,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:33:30,445 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:33:30,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-02 20:33:30,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:30,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:33:30,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:33:31,123 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 20:33:31,123 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:33:31,123 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:33:31,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1447974000] [2022-11-02 20:33:31,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1447974000] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:33:31,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:33:31,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:33:31,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852935830] [2022-11-02 20:33:31,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:33:31,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:33:31,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:33:31,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:33:31,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:33:31,126 INFO L87 Difference]: Start difference. First operand 165 states and 217 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:31,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:31,237 INFO L93 Difference]: Finished difference Result 355 states and 496 transitions. [2022-11-02 20:33:31,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:33:31,238 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-11-02 20:33:31,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:31,239 INFO L225 Difference]: With dead ends: 355 [2022-11-02 20:33:31,239 INFO L226 Difference]: Without dead ends: 266 [2022-11-02 20:33:31,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:33:31,240 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 172 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:33:31,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 445 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:33:31,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-11-02 20:33:31,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 167. [2022-11-02 20:33:31,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 166 states have (on average 1.319277108433735) internal successors, (219), 166 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:31,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 219 transitions. [2022-11-02 20:33:31,247 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 219 transitions. Word has length 92 [2022-11-02 20:33:31,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:31,248 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 219 transitions. [2022-11-02 20:33:31,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:31,248 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 219 transitions. [2022-11-02 20:33:31,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-02 20:33:31,249 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:31,249 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:33:31,271 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-11-02 20:33:31,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:33:31,464 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:31,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:31,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1158747815, now seen corresponding path program 1 times [2022-11-02 20:33:31,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:33:31,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1330401606] [2022-11-02 20:33:31,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:31,465 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:33:31,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:33:31,467 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:33:31,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-11-02 20:33:31,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:31,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:33:31,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:33:32,208 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 20:33:32,209 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:33:32,209 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:33:32,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1330401606] [2022-11-02 20:33:32,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1330401606] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:33:32,210 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:33:32,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:33:32,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021883638] [2022-11-02 20:33:32,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:33:32,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:33:32,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:33:32,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:33:32,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:33:32,213 INFO L87 Difference]: Start difference. First operand 167 states and 219 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:32,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:32,315 INFO L93 Difference]: Finished difference Result 400 states and 560 transitions. [2022-11-02 20:33:32,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:33:32,316 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-11-02 20:33:32,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:32,317 INFO L225 Difference]: With dead ends: 400 [2022-11-02 20:33:32,318 INFO L226 Difference]: Without dead ends: 311 [2022-11-02 20:33:32,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:33:32,320 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 347 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 678 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:33:32,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 678 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:33:32,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2022-11-02 20:33:32,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 169. [2022-11-02 20:33:32,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 168 states have (on average 1.3154761904761905) internal successors, (221), 168 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 20:33:32,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 221 transitions. [2022-11-02 20:33:32,327 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 221 transitions. Word has length 92 [2022-11-02 20:33:32,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:32,328 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 221 transitions. [2022-11-02 20:33:32,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:32,328 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 221 transitions. [2022-11-02 20:33:32,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-02 20:33:32,329 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:32,329 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:33:32,346 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2022-11-02 20:33:32,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:33:32,543 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:32,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:32,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1745553829, now seen corresponding path program 1 times [2022-11-02 20:33:32,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:33:32,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1648549653] [2022-11-02 20:33:32,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:32,544 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:33:32,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:33:32,546 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:33:32,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-11-02 20:33:32,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:32,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:33:32,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:33:33,008 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 20:33:33,009 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:33:33,009 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:33:33,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1648549653] [2022-11-02 20:33:33,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1648549653] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:33:33,009 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:33:33,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:33:33,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499282517] [2022-11-02 20:33:33,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:33:33,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:33:33,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:33:33,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:33:33,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:33:33,012 INFO L87 Difference]: Start difference. First operand 169 states and 221 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:33,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:33,077 INFO L93 Difference]: Finished difference Result 355 states and 494 transitions. [2022-11-02 20:33:33,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:33:33,078 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-11-02 20:33:33,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:33,081 INFO L225 Difference]: With dead ends: 355 [2022-11-02 20:33:33,081 INFO L226 Difference]: Without dead ends: 266 [2022-11-02 20:33:33,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:33:33,083 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 160 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:33:33,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 464 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:33:33,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-11-02 20:33:33,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 171. [2022-11-02 20:33:33,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 170 states have (on average 1.311764705882353) internal successors, (223), 170 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:33,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 223 transitions. [2022-11-02 20:33:33,090 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 223 transitions. Word has length 92 [2022-11-02 20:33:33,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:33,091 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 223 transitions. [2022-11-02 20:33:33,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:33,091 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 223 transitions. [2022-11-02 20:33:33,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-02 20:33:33,092 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:33,092 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:33:33,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-11-02 20:33:33,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:33:33,309 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:33,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:33,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1044489251, now seen corresponding path program 1 times [2022-11-02 20:33:33,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:33:33,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1572666466] [2022-11-02 20:33:33,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:33,311 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:33:33,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:33:33,312 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:33:33,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-11-02 20:33:33,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:33,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:33:33,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:33:34,030 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 20:33:34,030 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:33:34,031 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:33:34,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1572666466] [2022-11-02 20:33:34,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1572666466] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:33:34,031 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:33:34,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:33:34,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250899208] [2022-11-02 20:33:34,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:33:34,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:33:34,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:33:34,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:33:34,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:33:34,035 INFO L87 Difference]: Start difference. First operand 171 states and 223 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:34,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:34,142 INFO L93 Difference]: Finished difference Result 400 states and 558 transitions. [2022-11-02 20:33:34,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:33:34,143 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-11-02 20:33:34,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:34,144 INFO L225 Difference]: With dead ends: 400 [2022-11-02 20:33:34,144 INFO L226 Difference]: Without dead ends: 311 [2022-11-02 20:33:34,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:33:34,146 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 333 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:33:34,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [333 Valid, 670 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:33:34,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2022-11-02 20:33:34,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 173. [2022-11-02 20:33:34,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 172 states have (on average 1.308139534883721) internal successors, (225), 172 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:34,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 225 transitions. [2022-11-02 20:33:34,152 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 225 transitions. Word has length 92 [2022-11-02 20:33:34,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:34,153 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 225 transitions. [2022-11-02 20:33:34,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:34,153 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 225 transitions. [2022-11-02 20:33:34,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-02 20:33:34,153 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:34,154 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:33:34,181 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2022-11-02 20:33:34,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:33:34,354 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:34,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:34,355 INFO L85 PathProgramCache]: Analyzing trace with hash -364430881, now seen corresponding path program 1 times [2022-11-02 20:33:34,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:33:34,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1306172015] [2022-11-02 20:33:34,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:34,356 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:33:34,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:33:34,357 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:33:34,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-11-02 20:33:34,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:34,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:33:34,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:33:34,775 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 20:33:34,775 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:33:34,775 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:33:34,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1306172015] [2022-11-02 20:33:34,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1306172015] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:33:34,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:33:34,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:33:34,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152413439] [2022-11-02 20:33:34,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:33:34,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:33:34,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:33:34,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:33:34,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:33:34,778 INFO L87 Difference]: Start difference. First operand 173 states and 225 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:34,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:34,845 INFO L93 Difference]: Finished difference Result 355 states and 492 transitions. [2022-11-02 20:33:34,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:33:34,846 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-11-02 20:33:34,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:34,847 INFO L225 Difference]: With dead ends: 355 [2022-11-02 20:33:34,848 INFO L226 Difference]: Without dead ends: 266 [2022-11-02 20:33:34,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:33:34,852 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 143 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:33:34,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 462 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:33:34,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-11-02 20:33:34,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 177. [2022-11-02 20:33:34,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 176 states have (on average 1.3068181818181819) internal successors, (230), 176 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:34,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 230 transitions. [2022-11-02 20:33:34,865 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 230 transitions. Word has length 92 [2022-11-02 20:33:34,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:34,865 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 230 transitions. [2022-11-02 20:33:34,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:34,866 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 230 transitions. [2022-11-02 20:33:34,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-02 20:33:34,867 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:34,867 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:33:34,884 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2022-11-02 20:33:35,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:33:35,084 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:35,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:35,085 INFO L85 PathProgramCache]: Analyzing trace with hash -362583839, now seen corresponding path program 1 times [2022-11-02 20:33:35,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:33:35,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [925570599] [2022-11-02 20:33:35,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:35,086 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:33:35,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:33:35,087 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:33:35,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-11-02 20:33:35,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:35,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-02 20:33:35,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:33:36,199 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:33:36,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:33:37,550 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:33:37,550 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:33:37,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [925570599] [2022-11-02 20:33:37,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [925570599] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:33:37,551 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:33:37,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-02 20:33:37,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349750213] [2022-11-02 20:33:37,552 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:33:37,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-02 20:33:37,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:33:37,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-02 20:33:37,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:33:37,554 INFO L87 Difference]: Start difference. First operand 177 states and 230 transitions. Second operand has 16 states, 16 states have (on average 11.375) internal successors, (182), 16 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 20:33:38,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:38,318 INFO L93 Difference]: Finished difference Result 424 states and 569 transitions. [2022-11-02 20:33:38,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 20:33:38,319 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 11.375) internal successors, (182), 16 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-11-02 20:33:38,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:38,321 INFO L225 Difference]: With dead ends: 424 [2022-11-02 20:33:38,322 INFO L226 Difference]: Without dead ends: 422 [2022-11-02 20:33:38,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 167 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=205, Invalid=607, Unknown=0, NotChecked=0, Total=812 [2022-11-02 20:33:38,323 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 1067 mSDsluCounter, 1789 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1067 SdHoareTripleChecker+Valid, 2072 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 261 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:33:38,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1067 Valid, 2072 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 154 Invalid, 0 Unknown, 261 Unchecked, 0.3s Time] [2022-11-02 20:33:38,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2022-11-02 20:33:38,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 330. [2022-11-02 20:33:38,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 329 states have (on average 1.3161094224924013) internal successors, (433), 329 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:38,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 433 transitions. [2022-11-02 20:33:38,337 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 433 transitions. Word has length 92 [2022-11-02 20:33:38,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:38,337 INFO L495 AbstractCegarLoop]: Abstraction has 330 states and 433 transitions. [2022-11-02 20:33:38,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 11.375) internal successors, (182), 16 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 20:33:38,338 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 433 transitions. [2022-11-02 20:33:38,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-02 20:33:38,338 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:38,339 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:33:38,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2022-11-02 20:33:38,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:33:38,540 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:38,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:38,540 INFO L85 PathProgramCache]: Analyzing trace with hash 604766815, now seen corresponding path program 1 times [2022-11-02 20:33:38,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:33:38,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1889364378] [2022-11-02 20:33:38,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:38,541 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:33:38,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:33:38,543 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:33:38,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-11-02 20:33:38,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:38,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:33:38,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:33:38,864 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 20:33:38,864 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:33:38,865 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:33:38,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1889364378] [2022-11-02 20:33:38,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1889364378] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:33:38,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:33:38,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:33:38,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689544780] [2022-11-02 20:33:38,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:33:38,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:33:38,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:33:38,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:33:38,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:33:38,868 INFO L87 Difference]: Start difference. First operand 330 states and 433 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:38,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:38,931 INFO L93 Difference]: Finished difference Result 508 states and 694 transitions. [2022-11-02 20:33:38,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:33:38,932 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-11-02 20:33:38,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:38,934 INFO L225 Difference]: With dead ends: 508 [2022-11-02 20:33:38,934 INFO L226 Difference]: Without dead ends: 353 [2022-11-02 20:33:38,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:33:38,936 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 282 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:33:38,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 400 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:33:38,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2022-11-02 20:33:38,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 264. [2022-11-02 20:33:38,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 263 states have (on average 1.361216730038023) internal successors, (358), 263 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:38,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 358 transitions. [2022-11-02 20:33:38,951 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 358 transitions. Word has length 92 [2022-11-02 20:33:38,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:38,951 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 358 transitions. [2022-11-02 20:33:38,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:38,952 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 358 transitions. [2022-11-02 20:33:38,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-02 20:33:38,953 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:38,954 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:33:38,977 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2022-11-02 20:33:39,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:33:39,171 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:39,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:39,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1502912079, now seen corresponding path program 1 times [2022-11-02 20:33:39,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:33:39,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [205572150] [2022-11-02 20:33:39,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:39,173 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:33:39,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:33:39,174 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:33:39,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2022-11-02 20:33:39,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:39,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 832 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:33:39,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:33:40,089 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 87 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:33:40,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:33:40,407 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 87 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:33:40,407 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:33:40,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [205572150] [2022-11-02 20:33:40,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [205572150] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:33:40,408 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:33:40,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2022-11-02 20:33:40,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800439760] [2022-11-02 20:33:40,408 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:33:40,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:33:40,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:33:40,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:33:40,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:33:40,410 INFO L87 Difference]: Start difference. First operand 264 states and 358 transitions. Second operand has 10 states, 10 states have (on average 26.7) internal successors, (267), 10 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:40,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:40,999 INFO L93 Difference]: Finished difference Result 804 states and 1148 transitions. [2022-11-02 20:33:41,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:33:41,000 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 26.7) internal successors, (267), 10 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 179 [2022-11-02 20:33:41,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:41,003 INFO L225 Difference]: With dead ends: 804 [2022-11-02 20:33:41,003 INFO L226 Difference]: Without dead ends: 628 [2022-11-02 20:33:41,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=235, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:33:41,005 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 824 mSDsluCounter, 836 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 824 SdHoareTripleChecker+Valid, 1020 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:33:41,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [824 Valid, 1020 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:33:41,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2022-11-02 20:33:41,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 274. [2022-11-02 20:33:41,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 273 states have (on average 1.3516483516483517) internal successors, (369), 273 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:41,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 369 transitions. [2022-11-02 20:33:41,019 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 369 transitions. Word has length 179 [2022-11-02 20:33:41,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:41,020 INFO L495 AbstractCegarLoop]: Abstraction has 274 states and 369 transitions. [2022-11-02 20:33:41,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 26.7) internal successors, (267), 10 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:41,021 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 369 transitions. [2022-11-02 20:33:41,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-02 20:33:41,022 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:41,022 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:33:41,049 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2022-11-02 20:33:41,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:33:41,239 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:41,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:41,239 INFO L85 PathProgramCache]: Analyzing trace with hash 916635857, now seen corresponding path program 1 times [2022-11-02 20:33:41,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:33:41,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [722491085] [2022-11-02 20:33:41,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:41,241 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:33:41,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:33:41,243 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:33:41,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2022-11-02 20:33:41,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:41,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 832 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-02 20:33:41,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:33:42,223 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 85 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 20:33:42,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:33:42,783 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 85 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 20:33:42,784 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:33:42,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [722491085] [2022-11-02 20:33:42,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [722491085] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:33:42,784 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:33:42,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2022-11-02 20:33:42,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880356025] [2022-11-02 20:33:42,785 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:33:42,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-02 20:33:42,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:33:42,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-02 20:33:42,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2022-11-02 20:33:42,787 INFO L87 Difference]: Start difference. First operand 274 states and 369 transitions. Second operand has 20 states, 20 states have (on average 13.25) internal successors, (265), 20 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:44,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:44,124 INFO L93 Difference]: Finished difference Result 1380 states and 1977 transitions. [2022-11-02 20:33:44,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-02 20:33:44,124 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 13.25) internal successors, (265), 20 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 179 [2022-11-02 20:33:44,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:44,129 INFO L225 Difference]: With dead ends: 1380 [2022-11-02 20:33:44,130 INFO L226 Difference]: Without dead ends: 1194 [2022-11-02 20:33:44,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 337 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=394, Invalid=1246, Unknown=0, NotChecked=0, Total=1640 [2022-11-02 20:33:44,132 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 2387 mSDsluCounter, 3027 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2387 SdHoareTripleChecker+Valid, 3203 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:33:44,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2387 Valid, 3203 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-02 20:33:44,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2022-11-02 20:33:44,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 458. [2022-11-02 20:33:44,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 457 states have (on average 1.3938730853391685) internal successors, (637), 457 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:44,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 637 transitions. [2022-11-02 20:33:44,164 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 637 transitions. Word has length 179 [2022-11-02 20:33:44,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:44,165 INFO L495 AbstractCegarLoop]: Abstraction has 458 states and 637 transitions. [2022-11-02 20:33:44,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 13.25) internal successors, (265), 20 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:44,165 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 637 transitions. [2022-11-02 20:33:44,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-02 20:33:44,167 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:44,168 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:33:44,188 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (37)] Ended with exit code 0 [2022-11-02 20:33:44,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:33:44,388 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:44,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:44,389 INFO L85 PathProgramCache]: Analyzing trace with hash -959846961, now seen corresponding path program 1 times [2022-11-02 20:33:44,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:33:44,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1846212470] [2022-11-02 20:33:44,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:44,390 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:33:44,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:33:44,391 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:33:44,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2022-11-02 20:33:44,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:44,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 832 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 20:33:44,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:33:45,202 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 83 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:33:45,202 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:33:45,619 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 90 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:33:45,619 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:33:45,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1846212470] [2022-11-02 20:33:45,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1846212470] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:33:45,619 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:33:45,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2022-11-02 20:33:45,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022739318] [2022-11-02 20:33:45,620 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:33:45,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 20:33:45,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:33:45,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 20:33:45,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:33:45,622 INFO L87 Difference]: Start difference. First operand 458 states and 637 transitions. Second operand has 19 states, 19 states have (on average 11.736842105263158) internal successors, (223), 19 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:47,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:47,077 INFO L93 Difference]: Finished difference Result 3128 states and 4494 transitions. [2022-11-02 20:33:47,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-02 20:33:47,077 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 11.736842105263158) internal successors, (223), 19 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 179 [2022-11-02 20:33:47,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:47,089 INFO L225 Difference]: With dead ends: 3128 [2022-11-02 20:33:47,089 INFO L226 Difference]: Without dead ends: 2758 [2022-11-02 20:33:47,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=408, Invalid=1314, Unknown=0, NotChecked=0, Total=1722 [2022-11-02 20:33:47,092 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 2312 mSDsluCounter, 2863 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2312 SdHoareTripleChecker+Valid, 3028 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:33:47,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2312 Valid, 3028 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-02 20:33:47,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2758 states. [2022-11-02 20:33:47,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2758 to 874. [2022-11-02 20:33:47,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 874 states, 873 states have (on average 1.402061855670103) internal successors, (1224), 873 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:47,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 874 states to 874 states and 1224 transitions. [2022-11-02 20:33:47,173 INFO L78 Accepts]: Start accepts. Automaton has 874 states and 1224 transitions. Word has length 179 [2022-11-02 20:33:47,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:47,174 INFO L495 AbstractCegarLoop]: Abstraction has 874 states and 1224 transitions. [2022-11-02 20:33:47,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 11.736842105263158) internal successors, (223), 19 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:47,174 INFO L276 IsEmpty]: Start isEmpty. Operand 874 states and 1224 transitions. [2022-11-02 20:33:47,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-02 20:33:47,176 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:47,177 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:33:47,204 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2022-11-02 20:33:47,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:33:47,396 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:47,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:47,397 INFO L85 PathProgramCache]: Analyzing trace with hash 365009233, now seen corresponding path program 1 times [2022-11-02 20:33:47,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:33:47,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [488854088] [2022-11-02 20:33:47,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:47,398 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:33:47,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:33:47,399 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:33:47,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2022-11-02 20:33:47,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:47,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 832 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 20:33:47,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:33:48,176 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 81 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:33:48,177 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:33:48,574 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 90 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:33:48,574 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:33:48,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [488854088] [2022-11-02 20:33:48,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [488854088] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:33:48,575 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:33:48,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2022-11-02 20:33:48,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709893807] [2022-11-02 20:33:48,575 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:33:48,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 20:33:48,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:33:48,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 20:33:48,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:33:48,577 INFO L87 Difference]: Start difference. First operand 874 states and 1224 transitions. Second operand has 19 states, 19 states have (on average 11.736842105263158) internal successors, (223), 19 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:49,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:49,946 INFO L93 Difference]: Finished difference Result 2748 states and 3932 transitions. [2022-11-02 20:33:49,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-02 20:33:49,946 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 11.736842105263158) internal successors, (223), 19 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 179 [2022-11-02 20:33:49,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:49,955 INFO L225 Difference]: With dead ends: 2748 [2022-11-02 20:33:49,955 INFO L226 Difference]: Without dead ends: 2378 [2022-11-02 20:33:49,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=408, Invalid=1314, Unknown=0, NotChecked=0, Total=1722 [2022-11-02 20:33:49,958 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 1928 mSDsluCounter, 2891 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1928 SdHoareTripleChecker+Valid, 3057 SdHoareTripleChecker+Invalid, 651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:33:49,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1928 Valid, 3057 Invalid, 651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 600 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-02 20:33:49,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2378 states. [2022-11-02 20:33:50,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2378 to 874. [2022-11-02 20:33:50,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 874 states, 873 states have (on average 1.397479954180985) internal successors, (1220), 873 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:50,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 874 states to 874 states and 1220 transitions. [2022-11-02 20:33:50,019 INFO L78 Accepts]: Start accepts. Automaton has 874 states and 1220 transitions. Word has length 179 [2022-11-02 20:33:50,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:50,019 INFO L495 AbstractCegarLoop]: Abstraction has 874 states and 1220 transitions. [2022-11-02 20:33:50,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 11.736842105263158) internal successors, (223), 19 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:50,020 INFO L276 IsEmpty]: Start isEmpty. Operand 874 states and 1220 transitions. [2022-11-02 20:33:50,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-02 20:33:50,022 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:50,022 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:33:50,041 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (39)] Ended with exit code 0 [2022-11-02 20:33:50,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:33:50,239 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:50,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:50,239 INFO L85 PathProgramCache]: Analyzing trace with hash -692828845, now seen corresponding path program 1 times [2022-11-02 20:33:50,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:33:50,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1554198795] [2022-11-02 20:33:50,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:50,240 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:33:50,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:33:50,241 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:33:50,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2022-11-02 20:33:50,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:50,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 832 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:33:50,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:33:50,980 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 77 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:33:50,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:33:51,272 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 90 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:33:51,273 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:33:51,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1554198795] [2022-11-02 20:33:51,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1554198795] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:33:51,273 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:33:51,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-11-02 20:33:51,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567503299] [2022-11-02 20:33:51,274 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:33:51,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:33:51,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:33:51,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:33:51,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:33:51,276 INFO L87 Difference]: Start difference. First operand 874 states and 1220 transitions. Second operand has 11 states, 11 states have (on average 21.545454545454547) internal successors, (237), 11 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:51,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:51,752 INFO L93 Difference]: Finished difference Result 4138 states and 5952 transitions. [2022-11-02 20:33:51,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:33:51,755 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 21.545454545454547) internal successors, (237), 11 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 179 [2022-11-02 20:33:51,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:51,767 INFO L225 Difference]: With dead ends: 4138 [2022-11-02 20:33:51,768 INFO L226 Difference]: Without dead ends: 3400 [2022-11-02 20:33:51,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:33:51,770 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 1055 mSDsluCounter, 1111 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1055 SdHoareTripleChecker+Valid, 1292 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:33:51,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1055 Valid, 1292 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:33:51,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3400 states. [2022-11-02 20:33:51,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3400 to 1610. [2022-11-02 20:33:51,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1610 states, 1609 states have (on average 1.4170292106898694) internal successors, (2280), 1609 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:51,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1610 states to 1610 states and 2280 transitions. [2022-11-02 20:33:51,873 INFO L78 Accepts]: Start accepts. Automaton has 1610 states and 2280 transitions. Word has length 179 [2022-11-02 20:33:51,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:51,874 INFO L495 AbstractCegarLoop]: Abstraction has 1610 states and 2280 transitions. [2022-11-02 20:33:51,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 21.545454545454547) internal successors, (237), 11 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:51,874 INFO L276 IsEmpty]: Start isEmpty. Operand 1610 states and 2280 transitions. [2022-11-02 20:33:51,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-02 20:33:51,877 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:51,877 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:33:51,904 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2022-11-02 20:33:52,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:33:52,097 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:52,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:52,098 INFO L85 PathProgramCache]: Analyzing trace with hash -665763243, now seen corresponding path program 1 times [2022-11-02 20:33:52,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:33:52,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1281516129] [2022-11-02 20:33:52,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:52,099 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:33:52,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:33:52,100 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:33:52,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2022-11-02 20:33:52,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:52,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 832 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 20:33:52,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:33:52,889 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 73 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:33:52,889 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:33:53,299 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 90 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:33:53,299 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:33:53,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1281516129] [2022-11-02 20:33:53,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1281516129] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:33:53,300 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:33:53,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2022-11-02 20:33:53,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79259045] [2022-11-02 20:33:53,300 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:33:53,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 20:33:53,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:33:53,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 20:33:53,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:33:53,302 INFO L87 Difference]: Start difference. First operand 1610 states and 2280 transitions. Second operand has 19 states, 19 states have (on average 11.736842105263158) internal successors, (223), 19 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:54,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:54,690 INFO L93 Difference]: Finished difference Result 6556 states and 9432 transitions. [2022-11-02 20:33:54,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-02 20:33:54,690 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 11.736842105263158) internal successors, (223), 19 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 179 [2022-11-02 20:33:54,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:54,704 INFO L225 Difference]: With dead ends: 6556 [2022-11-02 20:33:54,704 INFO L226 Difference]: Without dead ends: 5082 [2022-11-02 20:33:54,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=408, Invalid=1314, Unknown=0, NotChecked=0, Total=1722 [2022-11-02 20:33:54,708 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 1913 mSDsluCounter, 2700 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1913 SdHoareTripleChecker+Valid, 2868 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:33:54,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1913 Valid, 2868 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-02 20:33:54,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5082 states. [2022-11-02 20:33:54,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5082 to 1610. [2022-11-02 20:33:54,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1610 states, 1609 states have (on average 1.4120571783716593) internal successors, (2272), 1609 states have internal predecessors, (2272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:54,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1610 states to 1610 states and 2272 transitions. [2022-11-02 20:33:54,881 INFO L78 Accepts]: Start accepts. Automaton has 1610 states and 2272 transitions. Word has length 179 [2022-11-02 20:33:54,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:54,882 INFO L495 AbstractCegarLoop]: Abstraction has 1610 states and 2272 transitions. [2022-11-02 20:33:54,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 11.736842105263158) internal successors, (223), 19 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:54,883 INFO L276 IsEmpty]: Start isEmpty. Operand 1610 states and 2272 transitions. [2022-11-02 20:33:54,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-02 20:33:54,886 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:54,886 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:33:54,912 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2022-11-02 20:33:55,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:33:55,103 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:55,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:55,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1718161495, now seen corresponding path program 1 times [2022-11-02 20:33:55,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:33:55,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [598807554] [2022-11-02 20:33:55,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:55,105 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:33:55,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:33:55,107 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:33:55,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2022-11-02 20:33:55,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:55,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 832 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:33:55,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:33:55,879 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 69 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:33:55,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:33:56,223 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 90 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:33:56,224 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:33:56,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [598807554] [2022-11-02 20:33:56,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [598807554] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:33:56,224 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:33:56,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-11-02 20:33:56,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766811632] [2022-11-02 20:33:56,224 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:33:56,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:33:56,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:33:56,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:33:56,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:33:56,226 INFO L87 Difference]: Start difference. First operand 1610 states and 2272 transitions. Second operand has 11 states, 11 states have (on average 21.545454545454547) internal successors, (237), 11 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:56,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:56,706 INFO L93 Difference]: Finished difference Result 3578 states and 5116 transitions. [2022-11-02 20:33:56,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:33:56,707 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 21.545454545454547) internal successors, (237), 11 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 179 [2022-11-02 20:33:56,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:56,717 INFO L225 Difference]: With dead ends: 3578 [2022-11-02 20:33:56,717 INFO L226 Difference]: Without dead ends: 2840 [2022-11-02 20:33:56,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:33:56,720 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 936 mSDsluCounter, 1105 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 936 SdHoareTripleChecker+Valid, 1286 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:33:56,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [936 Valid, 1286 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:33:56,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2840 states. [2022-11-02 20:33:56,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2840 to 1610. [2022-11-02 20:33:56,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1610 states, 1609 states have (on average 1.4070851460534493) internal successors, (2264), 1609 states have internal predecessors, (2264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:56,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1610 states to 1610 states and 2264 transitions. [2022-11-02 20:33:56,829 INFO L78 Accepts]: Start accepts. Automaton has 1610 states and 2264 transitions. Word has length 179 [2022-11-02 20:33:56,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:56,830 INFO L495 AbstractCegarLoop]: Abstraction has 1610 states and 2264 transitions. [2022-11-02 20:33:56,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 21.545454545454547) internal successors, (237), 11 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:56,830 INFO L276 IsEmpty]: Start isEmpty. Operand 1610 states and 2264 transitions. [2022-11-02 20:33:56,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-02 20:33:56,832 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:56,833 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:33:56,853 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2022-11-02 20:33:57,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:33:57,047 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:57,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:57,047 INFO L85 PathProgramCache]: Analyzing trace with hash -2102081321, now seen corresponding path program 1 times [2022-11-02 20:33:57,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:33:57,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [372476630] [2022-11-02 20:33:57,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:57,048 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:33:57,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:33:57,049 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:33:57,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2022-11-02 20:33:57,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:33:57,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 832 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 20:33:57,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:33:57,843 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 71 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:33:57,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:33:58,235 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 90 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:33:58,236 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:33:58,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [372476630] [2022-11-02 20:33:58,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [372476630] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:33:58,236 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:33:58,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2022-11-02 20:33:58,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375149926] [2022-11-02 20:33:58,237 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:33:58,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 20:33:58,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:33:58,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 20:33:58,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:33:58,239 INFO L87 Difference]: Start difference. First operand 1610 states and 2264 transitions. Second operand has 19 states, 19 states have (on average 11.736842105263158) internal successors, (223), 19 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:59,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:33:59,554 INFO L93 Difference]: Finished difference Result 4450 states and 6350 transitions. [2022-11-02 20:33:59,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-02 20:33:59,555 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 11.736842105263158) internal successors, (223), 19 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 179 [2022-11-02 20:33:59,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:33:59,563 INFO L225 Difference]: With dead ends: 4450 [2022-11-02 20:33:59,564 INFO L226 Difference]: Without dead ends: 3712 [2022-11-02 20:33:59,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=408, Invalid=1314, Unknown=0, NotChecked=0, Total=1722 [2022-11-02 20:33:59,567 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 2195 mSDsluCounter, 2151 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2195 SdHoareTripleChecker+Valid, 2325 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:33:59,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2195 Valid, 2325 Invalid, 537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 20:33:59,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3712 states. [2022-11-02 20:33:59,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3712 to 1426. [2022-11-02 20:33:59,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1426 states, 1425 states have (on average 1.4014035087719299) internal successors, (1997), 1425 states have internal predecessors, (1997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:59,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 1997 transitions. [2022-11-02 20:33:59,662 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 1997 transitions. Word has length 179 [2022-11-02 20:33:59,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:33:59,663 INFO L495 AbstractCegarLoop]: Abstraction has 1426 states and 1997 transitions. [2022-11-02 20:33:59,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 11.736842105263158) internal successors, (223), 19 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:33:59,663 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 1997 transitions. [2022-11-02 20:33:59,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-02 20:33:59,666 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:33:59,666 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:33:59,686 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2022-11-02 20:33:59,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:33:59,883 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:33:59,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:33:59,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1701027215, now seen corresponding path program 1 times [2022-11-02 20:33:59,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:33:59,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1896097230] [2022-11-02 20:33:59,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:33:59,885 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:33:59,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:33:59,887 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:33:59,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2022-11-02 20:34:00,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:00,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 832 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:34:00,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:34:00,418 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-11-02 20:34:00,418 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:34:00,419 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:34:00,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1896097230] [2022-11-02 20:34:00,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1896097230] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:34:00,419 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:34:00,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:34:00,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38821212] [2022-11-02 20:34:00,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:34:00,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:34:00,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:34:00,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:34:00,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:34:00,422 INFO L87 Difference]: Start difference. First operand 1426 states and 1997 transitions. Second operand has 5 states, 5 states have (on average 30.0) internal successors, (150), 5 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:00,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:00,587 INFO L93 Difference]: Finished difference Result 2357 states and 3315 transitions. [2022-11-02 20:34:00,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:34:00,591 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.0) internal successors, (150), 5 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 179 [2022-11-02 20:34:00,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:00,595 INFO L225 Difference]: With dead ends: 2357 [2022-11-02 20:34:00,595 INFO L226 Difference]: Without dead ends: 1573 [2022-11-02 20:34:00,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 175 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 20:34:00,598 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 266 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:34:00,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 520 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:34:00,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1573 states. [2022-11-02 20:34:00,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1573 to 1426. [2022-11-02 20:34:00,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1426 states, 1425 states have (on average 1.4) internal successors, (1995), 1425 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:00,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 1995 transitions. [2022-11-02 20:34:00,659 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 1995 transitions. Word has length 179 [2022-11-02 20:34:00,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:34:00,659 INFO L495 AbstractCegarLoop]: Abstraction has 1426 states and 1995 transitions. [2022-11-02 20:34:00,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.0) internal successors, (150), 5 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:00,659 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 1995 transitions. [2022-11-02 20:34:00,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-02 20:34:00,662 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:00,662 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:34:00,689 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2022-11-02 20:34:00,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:34:00,882 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:34:00,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:00,882 INFO L85 PathProgramCache]: Analyzing trace with hash -868667245, now seen corresponding path program 1 times [2022-11-02 20:34:00,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:34:00,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1793666390] [2022-11-02 20:34:00,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:00,884 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:34:00,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:34:00,886 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:34:00,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2022-11-02 20:34:01,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:01,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 832 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:34:01,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:34:01,324 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-11-02 20:34:01,325 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:34:01,325 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:34:01,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1793666390] [2022-11-02 20:34:01,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1793666390] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:34:01,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:34:01,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:34:01,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447228479] [2022-11-02 20:34:01,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:34:01,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:34:01,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:34:01,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:34:01,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:34:01,327 INFO L87 Difference]: Start difference. First operand 1426 states and 1995 transitions. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:01,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:01,407 INFO L93 Difference]: Finished difference Result 2895 states and 4118 transitions. [2022-11-02 20:34:01,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:34:01,407 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 179 [2022-11-02 20:34:01,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:01,411 INFO L225 Difference]: With dead ends: 2895 [2022-11-02 20:34:01,411 INFO L226 Difference]: Without dead ends: 2109 [2022-11-02 20:34:01,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 176 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 20:34:01,414 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 240 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 426 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 20:34:01,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 426 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:34:01,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2109 states. [2022-11-02 20:34:01,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2109 to 1378. [2022-11-02 20:34:01,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1378 states, 1377 states have (on average 1.4103122730573712) internal successors, (1942), 1377 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:01,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1378 states to 1378 states and 1942 transitions. [2022-11-02 20:34:01,498 INFO L78 Accepts]: Start accepts. Automaton has 1378 states and 1942 transitions. Word has length 179 [2022-11-02 20:34:01,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:34:01,499 INFO L495 AbstractCegarLoop]: Abstraction has 1378 states and 1942 transitions. [2022-11-02 20:34:01,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:01,499 INFO L276 IsEmpty]: Start isEmpty. Operand 1378 states and 1942 transitions. [2022-11-02 20:34:01,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2022-11-02 20:34:01,503 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:01,503 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:34:01,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2022-11-02 20:34:01,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:34:01,719 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:34:01,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:01,719 INFO L85 PathProgramCache]: Analyzing trace with hash -867184425, now seen corresponding path program 2 times [2022-11-02 20:34:01,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:34:01,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1163566463] [2022-11-02 20:34:01,721 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:34:01,721 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:34:01,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:34:01,722 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:34:01,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2022-11-02 20:34:02,185 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:34:02,185 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:34:02,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 1199 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:34:02,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:34:02,594 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 178 proven. 26 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-11-02 20:34:02,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:34:02,946 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 203 proven. 1 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-11-02 20:34:02,946 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:34:02,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1163566463] [2022-11-02 20:34:02,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1163566463] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:34:02,947 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:34:02,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-11-02 20:34:02,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684368943] [2022-11-02 20:34:02,947 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:34:02,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:34:02,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:34:02,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:34:02,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:34:02,949 INFO L87 Difference]: Start difference. First operand 1378 states and 1942 transitions. Second operand has 11 states, 11 states have (on average 24.0) internal successors, (264), 11 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:03,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:03,504 INFO L93 Difference]: Finished difference Result 6944 states and 9914 transitions. [2022-11-02 20:34:03,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:34:03,505 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 24.0) internal successors, (264), 11 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 266 [2022-11-02 20:34:03,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:03,514 INFO L225 Difference]: With dead ends: 6944 [2022-11-02 20:34:03,514 INFO L226 Difference]: Without dead ends: 5654 [2022-11-02 20:34:03,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 536 GetRequests, 521 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:34:03,518 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 1252 mSDsluCounter, 1131 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1252 SdHoareTripleChecker+Valid, 1326 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:34:03,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1252 Valid, 1326 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:34:03,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5654 states. [2022-11-02 20:34:03,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5654 to 2666. [2022-11-02 20:34:03,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2666 states, 2665 states have (on average 1.4157598499061914) internal successors, (3773), 2665 states have internal predecessors, (3773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:03,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2666 states to 2666 states and 3773 transitions. [2022-11-02 20:34:03,640 INFO L78 Accepts]: Start accepts. Automaton has 2666 states and 3773 transitions. Word has length 266 [2022-11-02 20:34:03,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:34:03,640 INFO L495 AbstractCegarLoop]: Abstraction has 2666 states and 3773 transitions. [2022-11-02 20:34:03,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 24.0) internal successors, (264), 11 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:03,640 INFO L276 IsEmpty]: Start isEmpty. Operand 2666 states and 3773 transitions. [2022-11-02 20:34:03,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2022-11-02 20:34:03,645 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:03,645 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:34:03,671 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2022-11-02 20:34:03,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:34:03,863 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:34:03,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:03,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1027149461, now seen corresponding path program 3 times [2022-11-02 20:34:03,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:34:03,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1020902190] [2022-11-02 20:34:03,865 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:34:03,865 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:34:03,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:34:03,867 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:34:03,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2022-11-02 20:34:04,171 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-02 20:34:04,171 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:34:04,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:34:04,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:34:04,210 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2022-11-02 20:34:04,210 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:34:04,211 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:34:04,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1020902190] [2022-11-02 20:34:04,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1020902190] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:34:04,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:34:04,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:34:04,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809445146] [2022-11-02 20:34:04,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:34:04,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:34:04,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:34:04,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:34:04,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:34:04,214 INFO L87 Difference]: Start difference. First operand 2666 states and 3773 transitions. Second operand has 5 states, 5 states have (on average 25.6) internal successors, (128), 5 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:04,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:04,454 INFO L93 Difference]: Finished difference Result 7628 states and 10881 transitions. [2022-11-02 20:34:04,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:34:04,456 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 5 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 266 [2022-11-02 20:34:04,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:04,467 INFO L225 Difference]: With dead ends: 7628 [2022-11-02 20:34:04,467 INFO L226 Difference]: Without dead ends: 5048 [2022-11-02 20:34:04,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 263 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 20:34:04,476 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 231 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 653 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:34:04,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 653 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:34:04,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5048 states. [2022-11-02 20:34:04,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5048 to 2720. [2022-11-02 20:34:04,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2720 states, 2719 states have (on average 1.4071349760941523) internal successors, (3826), 2719 states have internal predecessors, (3826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:04,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2720 states to 2720 states and 3826 transitions. [2022-11-02 20:34:04,620 INFO L78 Accepts]: Start accepts. Automaton has 2720 states and 3826 transitions. Word has length 266 [2022-11-02 20:34:04,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:34:04,621 INFO L495 AbstractCegarLoop]: Abstraction has 2720 states and 3826 transitions. [2022-11-02 20:34:04,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 5 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:04,621 INFO L276 IsEmpty]: Start isEmpty. Operand 2720 states and 3826 transitions. [2022-11-02 20:34:04,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2022-11-02 20:34:04,629 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:04,629 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:34:04,652 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2022-11-02 20:34:04,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:34:04,843 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:34:04,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:04,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1462262827, now seen corresponding path program 1 times [2022-11-02 20:34:04,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:34:04,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1641648587] [2022-11-02 20:34:04,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:04,844 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:34:04,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:34:04,846 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:34:04,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2022-11-02 20:34:05,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:05,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 1199 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-02 20:34:05,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:34:05,750 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 178 proven. 30 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-11-02 20:34:05,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:34:06,149 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 178 proven. 30 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-11-02 20:34:06,149 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:34:06,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1641648587] [2022-11-02 20:34:06,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1641648587] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:34:06,150 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:34:06,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2022-11-02 20:34:06,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363443070] [2022-11-02 20:34:06,150 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:34:06,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 20:34:06,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:34:06,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 20:34:06,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:34:06,156 INFO L87 Difference]: Start difference. First operand 2720 states and 3826 transitions. Second operand has 19 states, 19 states have (on average 12.631578947368421) internal successors, (240), 19 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 20:34:07,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:07,912 INFO L93 Difference]: Finished difference Result 20400 states and 29006 transitions. [2022-11-02 20:34:07,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-02 20:34:07,913 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 12.631578947368421) internal successors, (240), 19 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 266 [2022-11-02 20:34:07,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:07,944 INFO L225 Difference]: With dead ends: 20400 [2022-11-02 20:34:07,944 INFO L226 Difference]: Without dead ends: 17766 [2022-11-02 20:34:07,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 562 GetRequests, 513 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 525 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=578, Invalid=1972, Unknown=0, NotChecked=0, Total=2550 [2022-11-02 20:34:07,949 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 4531 mSDsluCounter, 1411 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4531 SdHoareTripleChecker+Valid, 1543 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:34:07,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4531 Valid, 1543 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 20:34:07,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17766 states. [2022-11-02 20:34:08,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17766 to 5576. [2022-11-02 20:34:08,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5576 states, 5575 states have (on average 1.4016143497757847) internal successors, (7814), 5575 states have internal predecessors, (7814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:08,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5576 states to 5576 states and 7814 transitions. [2022-11-02 20:34:08,419 INFO L78 Accepts]: Start accepts. Automaton has 5576 states and 7814 transitions. Word has length 266 [2022-11-02 20:34:08,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:34:08,419 INFO L495 AbstractCegarLoop]: Abstraction has 5576 states and 7814 transitions. [2022-11-02 20:34:08,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 12.631578947368421) internal successors, (240), 19 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 20:34:08,420 INFO L276 IsEmpty]: Start isEmpty. Operand 5576 states and 7814 transitions. [2022-11-02 20:34:08,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2022-11-02 20:34:08,431 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:08,432 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:34:08,464 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (48)] Forceful destruction successful, exit code 0 [2022-11-02 20:34:08,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:34:08,655 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:34:08,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:08,655 INFO L85 PathProgramCache]: Analyzing trace with hash 234664341, now seen corresponding path program 1 times [2022-11-02 20:34:08,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:34:08,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [582539732] [2022-11-02 20:34:08,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:08,657 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:34:08,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:34:08,659 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:34:08,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2022-11-02 20:34:09,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:09,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 1199 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:34:09,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:34:09,571 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 178 proven. 32 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-11-02 20:34:09,571 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:34:09,858 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 209 proven. 1 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-11-02 20:34:09,858 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:34:09,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [582539732] [2022-11-02 20:34:09,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [582539732] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:34:09,859 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:34:09,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-11-02 20:34:09,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681176658] [2022-11-02 20:34:09,859 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:34:09,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:34:09,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:34:09,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:34:09,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:34:09,861 INFO L87 Difference]: Start difference. First operand 5576 states and 7814 transitions. Second operand has 11 states, 11 states have (on average 25.454545454545453) internal successors, (280), 11 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:10,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:10,795 INFO L93 Difference]: Finished difference Result 29160 states and 41146 transitions. [2022-11-02 20:34:10,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:34:10,796 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 25.454545454545453) internal successors, (280), 11 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 266 [2022-11-02 20:34:10,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:10,859 INFO L225 Difference]: With dead ends: 29160 [2022-11-02 20:34:10,860 INFO L226 Difference]: Without dead ends: 23726 [2022-11-02 20:34:10,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 536 GetRequests, 521 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:34:10,868 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 1127 mSDsluCounter, 1145 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1127 SdHoareTripleChecker+Valid, 1347 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:34:10,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1127 Valid, 1347 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:34:10,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23726 states. [2022-11-02 20:34:11,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23726 to 11008. [2022-11-02 20:34:11,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11008 states, 11007 states have (on average 1.4007449804669756) internal successors, (15418), 11007 states have internal predecessors, (15418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:11,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11008 states to 11008 states and 15418 transitions. [2022-11-02 20:34:11,676 INFO L78 Accepts]: Start accepts. Automaton has 11008 states and 15418 transitions. Word has length 266 [2022-11-02 20:34:11,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:34:11,677 INFO L495 AbstractCegarLoop]: Abstraction has 11008 states and 15418 transitions. [2022-11-02 20:34:11,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 25.454545454545453) internal successors, (280), 11 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:11,677 INFO L276 IsEmpty]: Start isEmpty. Operand 11008 states and 15418 transitions. [2022-11-02 20:34:11,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2022-11-02 20:34:11,699 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:11,699 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:34:11,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2022-11-02 20:34:11,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:34:11,922 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:34:11,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:11,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1088514605, now seen corresponding path program 2 times [2022-11-02 20:34:11,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:34:11,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1154951947] [2022-11-02 20:34:11,924 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:34:11,924 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:34:11,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:34:11,926 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:34:11,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2022-11-02 20:34:12,372 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:34:12,372 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:34:12,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 1199 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-02 20:34:12,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:34:12,860 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 178 proven. 36 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-11-02 20:34:12,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:34:13,278 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 178 proven. 36 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-11-02 20:34:13,279 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:34:13,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1154951947] [2022-11-02 20:34:13,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1154951947] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:34:13,279 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:34:13,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2022-11-02 20:34:13,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156878209] [2022-11-02 20:34:13,280 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:34:13,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 20:34:13,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:34:13,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 20:34:13,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:34:13,281 INFO L87 Difference]: Start difference. First operand 11008 states and 15418 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 20:34:16,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:16,504 INFO L93 Difference]: Finished difference Result 81568 states and 115146 transitions. [2022-11-02 20:34:16,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-02 20:34:16,505 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 266 [2022-11-02 20:34:16,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:16,578 INFO L225 Difference]: With dead ends: 81568 [2022-11-02 20:34:16,578 INFO L226 Difference]: Without dead ends: 70702 [2022-11-02 20:34:16,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 562 GetRequests, 513 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 525 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=578, Invalid=1972, Unknown=0, NotChecked=0, Total=2550 [2022-11-02 20:34:16,599 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 3321 mSDsluCounter, 1730 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3321 SdHoareTripleChecker+Valid, 1867 SdHoareTripleChecker+Invalid, 600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:34:16,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3321 Valid, 1867 Invalid, 600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 521 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-02 20:34:16,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70702 states. [2022-11-02 20:34:17,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70702 to 22644. [2022-11-02 20:34:17,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22644 states, 22643 states have (on average 1.3943382060681004) internal successors, (31572), 22643 states have internal predecessors, (31572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:17,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22644 states to 22644 states and 31572 transitions. [2022-11-02 20:34:17,972 INFO L78 Accepts]: Start accepts. Automaton has 22644 states and 31572 transitions. Word has length 266 [2022-11-02 20:34:17,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:34:17,973 INFO L495 AbstractCegarLoop]: Abstraction has 22644 states and 31572 transitions. [2022-11-02 20:34:17,973 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 20:34:17,974 INFO L276 IsEmpty]: Start isEmpty. Operand 22644 states and 31572 transitions. [2022-11-02 20:34:18,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2022-11-02 20:34:18,033 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:18,034 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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] [2022-11-02 20:34:18,063 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2022-11-02 20:34:18,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:34:18,247 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:34:18,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:18,248 INFO L85 PathProgramCache]: Analyzing trace with hash -242158701, now seen corresponding path program 1 times [2022-11-02 20:34:18,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:34:18,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1649487232] [2022-11-02 20:34:18,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:18,250 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:34:18,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:34:18,254 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:34:18,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2022-11-02 20:34:18,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:18,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 1199 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-02 20:34:18,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:34:19,254 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 178 proven. 42 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-11-02 20:34:19,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:34:19,707 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 178 proven. 42 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-11-02 20:34:19,707 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:34:19,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1649487232] [2022-11-02 20:34:19,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1649487232] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:34:19,708 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:34:19,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2022-11-02 20:34:19,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693918330] [2022-11-02 20:34:19,709 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:34:19,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 20:34:19,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:34:19,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 20:34:19,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:34:19,711 INFO L87 Difference]: Start difference. First operand 22644 states and 31572 transitions. Second operand has 19 states, 19 states have (on average 13.578947368421053) internal successors, (258), 19 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:24,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:24,074 INFO L93 Difference]: Finished difference Result 90004 states and 127048 transitions. [2022-11-02 20:34:24,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-11-02 20:34:24,074 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 13.578947368421053) internal successors, (258), 19 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 266 [2022-11-02 20:34:24,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:24,156 INFO L225 Difference]: With dead ends: 90004 [2022-11-02 20:34:24,156 INFO L226 Difference]: Without dead ends: 77202 [2022-11-02 20:34:24,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 575 GetRequests, 513 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1022 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=881, Invalid=3151, Unknown=0, NotChecked=0, Total=4032 [2022-11-02 20:34:24,180 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 4752 mSDsluCounter, 1952 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4752 SdHoareTripleChecker+Valid, 2092 SdHoareTripleChecker+Invalid, 693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:34:24,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4752 Valid, 2092 Invalid, 693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-02 20:34:24,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77202 states. [2022-11-02 20:34:25,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77202 to 23988. [2022-11-02 20:34:25,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23988 states, 23987 states have (on average 1.3909200817109268) internal successors, (33364), 23987 states have internal predecessors, (33364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:25,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23988 states to 23988 states and 33364 transitions. [2022-11-02 20:34:25,676 INFO L78 Accepts]: Start accepts. Automaton has 23988 states and 33364 transitions. Word has length 266 [2022-11-02 20:34:25,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:34:25,676 INFO L495 AbstractCegarLoop]: Abstraction has 23988 states and 33364 transitions. [2022-11-02 20:34:25,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 13.578947368421053) internal successors, (258), 19 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:25,677 INFO L276 IsEmpty]: Start isEmpty. Operand 23988 states and 33364 transitions. [2022-11-02 20:34:25,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2022-11-02 20:34:25,702 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:25,702 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:34:25,726 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (51)] Forceful destruction successful, exit code 0 [2022-11-02 20:34:25,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:34:25,919 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:34:25,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:25,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1483813159, now seen corresponding path program 1 times [2022-11-02 20:34:25,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:34:25,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1936318514] [2022-11-02 20:34:25,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:25,920 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:34:25,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:34:25,921 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:34:25,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2022-11-02 20:34:26,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:26,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 1199 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-02 20:34:26,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:34:27,283 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 178 proven. 44 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-02 20:34:27,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:34:27,699 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 178 proven. 44 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-02 20:34:27,699 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:34:27,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1936318514] [2022-11-02 20:34:27,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1936318514] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:34:27,700 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:34:27,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2022-11-02 20:34:27,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470327350] [2022-11-02 20:34:27,700 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:34:27,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-02 20:34:27,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:34:27,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-02 20:34:27,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:34:27,705 INFO L87 Difference]: Start difference. First operand 23988 states and 33364 transitions. Second operand has 13 states, 13 states have (on average 27.153846153846153) internal successors, (353), 13 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:31,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:31,943 INFO L93 Difference]: Finished difference Result 120540 states and 167800 transitions. [2022-11-02 20:34:31,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:34:31,944 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 27.153846153846153) internal successors, (353), 13 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 266 [2022-11-02 20:34:31,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:32,108 INFO L225 Difference]: With dead ends: 120540 [2022-11-02 20:34:32,108 INFO L226 Difference]: Without dead ends: 96794 [2022-11-02 20:34:32,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 536 GetRequests, 519 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:34:32,165 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 1008 mSDsluCounter, 1561 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1008 SdHoareTripleChecker+Valid, 1742 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:34:32,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1008 Valid, 1742 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 20:34:32,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96794 states. [2022-11-02 20:34:34,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96794 to 47732. [2022-11-02 20:34:34,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47732 states, 47731 states have (on average 1.3878611384634725) internal successors, (66244), 47731 states have internal predecessors, (66244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:35,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47732 states to 47732 states and 66244 transitions. [2022-11-02 20:34:35,019 INFO L78 Accepts]: Start accepts. Automaton has 47732 states and 66244 transitions. Word has length 266 [2022-11-02 20:34:35,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:34:35,019 INFO L495 AbstractCegarLoop]: Abstraction has 47732 states and 66244 transitions. [2022-11-02 20:34:35,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 27.153846153846153) internal successors, (353), 13 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:35,020 INFO L276 IsEmpty]: Start isEmpty. Operand 47732 states and 66244 transitions. [2022-11-02 20:34:35,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2022-11-02 20:34:35,071 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:35,071 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:34:35,091 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (52)] Ended with exit code 0 [2022-11-02 20:34:35,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:34:35,283 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:34:35,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:35,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1193713687, now seen corresponding path program 2 times [2022-11-02 20:34:35,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:34:35,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1460375270] [2022-11-02 20:34:35,285 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:34:35,285 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:34:35,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:34:35,286 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:34:35,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2022-11-02 20:34:35,734 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:34:35,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:34:35,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 1199 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 20:34:35,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:34:36,795 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 178 proven. 3 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-11-02 20:34:36,796 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:34:37,370 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 178 proven. 3 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-11-02 20:34:37,370 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:34:37,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1460375270] [2022-11-02 20:34:37,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1460375270] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:34:37,371 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:34:37,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2022-11-02 20:34:37,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830600609] [2022-11-02 20:34:37,371 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:34:37,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 20:34:37,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:34:37,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 20:34:37,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:34:37,373 INFO L87 Difference]: Start difference. First operand 47732 states and 66244 transitions. Second operand has 12 states, 12 states have (on average 22.75) internal successors, (273), 12 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 20:34:44,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:44,182 INFO L93 Difference]: Finished difference Result 248892 states and 346312 transitions. [2022-11-02 20:34:44,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 20:34:44,183 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 22.75) internal successors, (273), 12 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 266 [2022-11-02 20:34:44,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:44,406 INFO L225 Difference]: With dead ends: 248892 [2022-11-02 20:34:44,406 INFO L226 Difference]: Without dead ends: 201402 [2022-11-02 20:34:44,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 538 GetRequests, 519 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2022-11-02 20:34:44,461 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 1263 mSDsluCounter, 1706 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1263 SdHoareTripleChecker+Valid, 1926 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:34:44,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1263 Valid, 1926 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:34:44,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201402 states. [2022-11-02 20:34:50,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201402 to 95220. [2022-11-02 20:34:50,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95220 states, 95219 states have (on average 1.3839674854808388) internal successors, (131780), 95219 states have internal predecessors, (131780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:50,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95220 states to 95220 states and 131780 transitions. [2022-11-02 20:34:50,275 INFO L78 Accepts]: Start accepts. Automaton has 95220 states and 131780 transitions. Word has length 266 [2022-11-02 20:34:50,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:34:50,275 INFO L495 AbstractCegarLoop]: Abstraction has 95220 states and 131780 transitions. [2022-11-02 20:34:50,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 22.75) internal successors, (273), 12 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 20:34:50,276 INFO L276 IsEmpty]: Start isEmpty. Operand 95220 states and 131780 transitions. [2022-11-02 20:34:50,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2022-11-02 20:34:50,395 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:50,396 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:34:50,412 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (53)] Forceful destruction successful, exit code 0 [2022-11-02 20:34:50,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:34:50,596 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:34:50,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:50,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1482533077, now seen corresponding path program 3 times [2022-11-02 20:34:50,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:34:50,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1195282142] [2022-11-02 20:34:50,598 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:34:50,598 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:34:50,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:34:50,599 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:34:50,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54cd81d2-98af-4d77-83c9-daf468db94e2/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2022-11-02 20:34:50,889 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-02 20:34:50,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:34:50,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:34:50,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:34:50,933 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 118 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2022-11-02 20:34:50,933 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:34:50,933 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:34:50,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1195282142] [2022-11-02 20:34:50,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1195282142] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:34:50,933 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:34:50,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:34:50,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854763690] [2022-11-02 20:34:50,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:34:50,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:34:50,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:34:50,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:34:50,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:34:50,935 INFO L87 Difference]: Start difference. First operand 95220 states and 131780 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:56,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:56,454 INFO L93 Difference]: Finished difference Result 206136 states and 286022 transitions. [2022-11-02 20:34:56,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:34:56,455 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 266 [2022-11-02 20:34:56,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:56,699 INFO L225 Difference]: With dead ends: 206136 [2022-11-02 20:34:56,699 INFO L226 Difference]: Without dead ends: 158198 [2022-11-02 20:34:56,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 265 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:34:56,753 INFO L413 NwaCegarLoop]: 326 mSDtfsCounter, 297 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 796 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 20:34:56,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 796 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:34:56,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158198 states.