./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label11.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e041ece-ce67-4d9d-8928-cbf5f731cf62/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e041ece-ce67-4d9d-8928-cbf5f731cf62/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e041ece-ce67-4d9d-8928-cbf5f731cf62/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e041ece-ce67-4d9d-8928-cbf5f731cf62/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label11.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e041ece-ce67-4d9d-8928-cbf5f731cf62/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e041ece-ce67-4d9d-8928-cbf5f731cf62/bin/utaipan-mTDlp9Zugs --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4f5e94ed071347129094298d5dbb28caecb84213 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:13:35,958 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:13:35,961 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:13:36,017 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:13:36,018 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:13:36,023 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:13:36,025 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:13:36,029 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:13:36,031 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:13:36,039 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:13:36,040 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:13:36,042 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:13:36,042 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:13:36,045 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:13:36,047 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:13:36,052 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:13:36,054 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:13:36,055 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:13:36,057 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:13:36,067 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:13:36,069 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:13:36,070 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:13:36,073 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:13:36,074 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:13:36,077 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:13:36,077 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:13:36,077 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:13:36,078 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:13:36,078 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:13:36,080 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:13:36,080 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:13:36,081 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:13:36,082 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:13:36,082 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:13:36,083 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:13:36,084 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:13:36,084 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:13:36,084 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:13:36,085 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:13:36,085 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:13:36,086 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:13:36,087 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e041ece-ce67-4d9d-8928-cbf5f731cf62/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 02:13:36,108 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:13:36,108 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:13:36,109 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:13:36,109 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:13:36,109 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:13:36,109 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:13:36,110 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 02:13:36,110 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:13:36,110 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:13:36,110 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 02:13:36,110 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 02:13:36,111 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:13:36,111 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 02:13:36,111 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 02:13:36,111 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 02:13:36,112 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:13:36,112 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:13:36,112 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:13:36,112 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:13:36,112 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:13:36,113 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:13:36,113 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:13:36,113 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:13:36,113 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:13:36,113 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:13:36,114 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:13:36,114 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:13:36,114 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:13:36,114 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:13:36,114 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:13:36,115 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:13:36,115 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:13:36,115 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:13:36,115 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:13:36,115 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 02:13:36,116 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 02:13:36,116 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:13:36,116 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:13:36,116 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:13:36,116 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_2e041ece-ce67-4d9d-8928-cbf5f731cf62/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e041ece-ce67-4d9d-8928-cbf5f731cf62/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f5e94ed071347129094298d5dbb28caecb84213 [2021-10-16 02:13:36,331 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:13:36,351 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:13:36,354 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:13:36,355 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:13:36,356 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:13:36,357 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e041ece-ce67-4d9d-8928-cbf5f731cf62/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/eca-rers2012/Problem02_label11.c [2021-10-16 02:13:36,443 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e041ece-ce67-4d9d-8928-cbf5f731cf62/bin/utaipan-mTDlp9Zugs/data/69bacfeaa/fccf834383714425860712b944cae556/FLAG17bb6871d [2021-10-16 02:13:36,975 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:13:36,976 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e041ece-ce67-4d9d-8928-cbf5f731cf62/sv-benchmarks/c/eca-rers2012/Problem02_label11.c [2021-10-16 02:13:36,989 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e041ece-ce67-4d9d-8928-cbf5f731cf62/bin/utaipan-mTDlp9Zugs/data/69bacfeaa/fccf834383714425860712b944cae556/FLAG17bb6871d [2021-10-16 02:13:37,274 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e041ece-ce67-4d9d-8928-cbf5f731cf62/bin/utaipan-mTDlp9Zugs/data/69bacfeaa/fccf834383714425860712b944cae556 [2021-10-16 02:13:37,277 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:13:37,278 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:13:37,280 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:13:37,280 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:13:37,283 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:13:37,284 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:13:37" (1/1) ... [2021-10-16 02:13:37,285 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c141733 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:13:37, skipping insertion in model container [2021-10-16 02:13:37,285 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:13:37" (1/1) ... [2021-10-16 02:13:37,291 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:13:37,344 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:13:37,661 WARN L228 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_2e041ece-ce67-4d9d-8928-cbf5f731cf62/sv-benchmarks/c/eca-rers2012/Problem02_label11.c[17696,17709] [2021-10-16 02:13:37,691 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:13:37,700 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:13:37,811 WARN L228 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_2e041ece-ce67-4d9d-8928-cbf5f731cf62/sv-benchmarks/c/eca-rers2012/Problem02_label11.c[17696,17709] [2021-10-16 02:13:37,836 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:13:37,859 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:13:37,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:13:37 WrapperNode [2021-10-16 02:13:37,859 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:13:37,861 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:13:37,861 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:13:37,861 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:13:37,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:13:37" (1/1) ... [2021-10-16 02:13:37,891 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:13:37" (1/1) ... [2021-10-16 02:13:37,954 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:13:37,955 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:13:37,956 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:13:37,956 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:13:37,965 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:13:37" (1/1) ... [2021-10-16 02:13:37,965 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:13:37" (1/1) ... [2021-10-16 02:13:37,981 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:13:37" (1/1) ... [2021-10-16 02:13:37,981 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:13:37" (1/1) ... [2021-10-16 02:13:38,016 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:13:37" (1/1) ... [2021-10-16 02:13:38,039 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:13:37" (1/1) ... [2021-10-16 02:13:38,043 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:13:37" (1/1) ... [2021-10-16 02:13:38,053 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:13:38,055 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:13:38,055 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:13:38,055 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:13:38,056 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:13:37" (1/1) ... [2021-10-16 02:13:38,079 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:13:38,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e041ece-ce67-4d9d-8928-cbf5f731cf62/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:13:38,107 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e041ece-ce67-4d9d-8928-cbf5f731cf62/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:13:38,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e041ece-ce67-4d9d-8928-cbf5f731cf62/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:13:38,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 02:13:38,148 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:13:38,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:13:38,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:13:39,987 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:13:39,987 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-16 02:13:39,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:13:39 BoogieIcfgContainer [2021-10-16 02:13:39,991 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:13:39,997 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:13:39,997 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:13:40,000 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:13:40,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:13:37" (1/3) ... [2021-10-16 02:13:40,002 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@878b57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:13:40, skipping insertion in model container [2021-10-16 02:13:40,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:13:37" (2/3) ... [2021-10-16 02:13:40,002 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@878b57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:13:40, skipping insertion in model container [2021-10-16 02:13:40,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:13:39" (3/3) ... [2021-10-16 02:13:40,004 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label11.c [2021-10-16 02:13:40,014 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:13:40,014 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 02:13:40,081 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:13:40,087 INFO L339 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, mConcurrency=FINITE_AUTOMATA, 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, mLoopAccelerationTechnique=FAST_UPR [2021-10-16 02:13:40,087 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 02:13:40,103 INFO L276 IsEmpty]: Start isEmpty. Operand has 85 states, 83 states have (on average 1.9518072289156627) internal successors, (162), 84 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) [2021-10-16 02:13:40,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-16 02:13:40,111 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:13:40,112 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:13:40,113 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:13:40,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:13:40,118 INFO L82 PathProgramCache]: Analyzing trace with hash 1243324339, now seen corresponding path program 1 times [2021-10-16 02:13:40,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:13:40,128 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000616164] [2021-10-16 02:13:40,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:13:40,129 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:13:40,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:13:40,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:13:40,477 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:13:40,478 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000616164] [2021-10-16 02:13:40,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000616164] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:13:40,478 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:13:40,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 02:13:40,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586326002] [2021-10-16 02:13:40,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:13:40,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:13:40,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:13:40,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:13:40,506 INFO L87 Difference]: Start difference. First operand has 85 states, 83 states have (on average 1.9518072289156627) internal successors, (162), 84 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) Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:13:40,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:13:40,910 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2021-10-16 02:13:40,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:13:40,912 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-10-16 02:13:40,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:13:40,924 INFO L225 Difference]: With dead ends: 251 [2021-10-16 02:13:40,925 INFO L226 Difference]: Without dead ends: 163 [2021-10-16 02:13:40,928 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:13:40,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-10-16 02:13:40,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2021-10-16 02:13:40,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 1.8395061728395061) internal successors, (298), 162 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:13:40,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 298 transitions. [2021-10-16 02:13:40,978 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 298 transitions. Word has length 80 [2021-10-16 02:13:40,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:13:40,979 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 298 transitions. [2021-10-16 02:13:40,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:13:40,979 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 298 transitions. [2021-10-16 02:13:40,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-10-16 02:13:40,983 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:13:40,984 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:13:40,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 02:13:40,985 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:13:40,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:13:40,987 INFO L82 PathProgramCache]: Analyzing trace with hash 1833066408, now seen corresponding path program 1 times [2021-10-16 02:13:40,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:13:40,988 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411462399] [2021-10-16 02:13:40,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:13:40,988 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:13:41,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:13:41,097 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:13:41,097 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:13:41,098 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411462399] [2021-10-16 02:13:41,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411462399] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:13:41,098 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:13:41,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 02:13:41,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248877230] [2021-10-16 02:13:41,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:13:41,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:13:41,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:13:41,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:13:41,102 INFO L87 Difference]: Start difference. First operand 163 states and 298 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:13:41,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:13:41,492 INFO L93 Difference]: Finished difference Result 485 states and 891 transitions. [2021-10-16 02:13:41,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:13:41,493 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2021-10-16 02:13:41,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:13:41,496 INFO L225 Difference]: With dead ends: 485 [2021-10-16 02:13:41,496 INFO L226 Difference]: Without dead ends: 323 [2021-10-16 02:13:41,498 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:13:41,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2021-10-16 02:13:41,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2021-10-16 02:13:41,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 322 states have (on average 1.515527950310559) internal successors, (488), 322 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:13:41,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 488 transitions. [2021-10-16 02:13:41,523 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 488 transitions. Word has length 84 [2021-10-16 02:13:41,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:13:41,523 INFO L470 AbstractCegarLoop]: Abstraction has 323 states and 488 transitions. [2021-10-16 02:13:41,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:13:41,524 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 488 transitions. [2021-10-16 02:13:41,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-10-16 02:13:41,528 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:13:41,528 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:13:41,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-16 02:13:41,529 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:13:41,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:13:41,529 INFO L82 PathProgramCache]: Analyzing trace with hash -2045181715, now seen corresponding path program 1 times [2021-10-16 02:13:41,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:13:41,530 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419347772] [2021-10-16 02:13:41,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:13:41,530 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:13:41,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:13:41,615 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:13:41,616 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:13:41,616 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419347772] [2021-10-16 02:13:41,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419347772] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:13:41,617 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:13:41,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:13:41,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326697221] [2021-10-16 02:13:41,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:13:41,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:13:41,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:13:41,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:13:41,622 INFO L87 Difference]: Start difference. First operand 323 states and 488 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:13:42,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:13:42,033 INFO L93 Difference]: Finished difference Result 805 states and 1271 transitions. [2021-10-16 02:13:42,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:13:42,034 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2021-10-16 02:13:42,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:13:42,037 INFO L225 Difference]: With dead ends: 805 [2021-10-16 02:13:42,039 INFO L226 Difference]: Without dead ends: 483 [2021-10-16 02:13:42,040 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:13:42,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2021-10-16 02:13:42,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 483. [2021-10-16 02:13:42,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 482 states have (on average 1.4066390041493777) internal successors, (678), 482 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:13:42,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 678 transitions. [2021-10-16 02:13:42,069 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 678 transitions. Word has length 89 [2021-10-16 02:13:42,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:13:42,069 INFO L470 AbstractCegarLoop]: Abstraction has 483 states and 678 transitions. [2021-10-16 02:13:42,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:13:42,070 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 678 transitions. [2021-10-16 02:13:42,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-10-16 02:13:42,074 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:13:42,075 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:13:42,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-16 02:13:42,075 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:13:42,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:13:42,076 INFO L82 PathProgramCache]: Analyzing trace with hash 2122121410, now seen corresponding path program 1 times [2021-10-16 02:13:42,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:13:42,076 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047075354] [2021-10-16 02:13:42,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:13:42,077 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:13:42,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:13:42,150 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-16 02:13:42,150 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:13:42,151 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047075354] [2021-10-16 02:13:42,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047075354] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:13:42,151 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:13:42,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 02:13:42,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462027546] [2021-10-16 02:13:42,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:13:42,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:13:42,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:13:42,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:13:42,153 INFO L87 Difference]: Start difference. First operand 483 states and 678 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:13:42,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:13:42,503 INFO L93 Difference]: Finished difference Result 1205 states and 1746 transitions. [2021-10-16 02:13:42,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:13:42,503 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 0 states have call successors, (0), 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 89 [2021-10-16 02:13:42,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:13:42,508 INFO L225 Difference]: With dead ends: 1205 [2021-10-16 02:13:42,509 INFO L226 Difference]: Without dead ends: 723 [2021-10-16 02:13:42,510 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:13:42,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2021-10-16 02:13:42,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 723. [2021-10-16 02:13:42,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 723 states, 722 states have (on average 1.389196675900277) internal successors, (1003), 722 states have internal predecessors, (1003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:13:42,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 1003 transitions. [2021-10-16 02:13:42,539 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 1003 transitions. Word has length 89 [2021-10-16 02:13:42,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:13:42,539 INFO L470 AbstractCegarLoop]: Abstraction has 723 states and 1003 transitions. [2021-10-16 02:13:42,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:13:42,540 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 1003 transitions. [2021-10-16 02:13:42,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-10-16 02:13:42,545 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:13:42,545 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:13:42,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-16 02:13:42,546 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:13:42,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:13:42,547 INFO L82 PathProgramCache]: Analyzing trace with hash 588889584, now seen corresponding path program 1 times [2021-10-16 02:13:42,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:13:42,547 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500084793] [2021-10-16 02:13:42,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:13:42,548 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:13:42,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:13:42,606 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:13:42,606 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:13:42,607 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500084793] [2021-10-16 02:13:42,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500084793] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:13:42,607 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:13:42,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:13:42,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049414165] [2021-10-16 02:13:42,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:13:42,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:13:42,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:13:42,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:13:42,610 INFO L87 Difference]: Start difference. First operand 723 states and 1003 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:13:42,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:13:42,960 INFO L93 Difference]: Finished difference Result 1365 states and 1915 transitions. [2021-10-16 02:13:42,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:13:42,961 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2021-10-16 02:13:42,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:13:42,966 INFO L225 Difference]: With dead ends: 1365 [2021-10-16 02:13:42,966 INFO L226 Difference]: Without dead ends: 643 [2021-10-16 02:13:42,968 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:13:42,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2021-10-16 02:13:42,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 643. [2021-10-16 02:13:43,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 642 states have (on average 1.3442367601246106) internal successors, (863), 642 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:13:43,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 863 transitions. [2021-10-16 02:13:43,003 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 863 transitions. Word has length 113 [2021-10-16 02:13:43,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:13:43,004 INFO L470 AbstractCegarLoop]: Abstraction has 643 states and 863 transitions. [2021-10-16 02:13:43,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:13:43,004 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 863 transitions. [2021-10-16 02:13:43,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-10-16 02:13:43,008 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:13:43,009 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:13:43,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-16 02:13:43,009 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:13:43,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:13:43,010 INFO L82 PathProgramCache]: Analyzing trace with hash -966269180, now seen corresponding path program 1 times [2021-10-16 02:13:43,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:13:43,010 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986324496] [2021-10-16 02:13:43,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:13:43,011 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:13:43,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:13:43,162 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:13:43,163 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:13:43,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986324496] [2021-10-16 02:13:43,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986324496] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:13:43,163 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:13:43,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:13:43,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17591936] [2021-10-16 02:13:43,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:13:43,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:13:43,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:13:43,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:13:43,166 INFO L87 Difference]: Start difference. First operand 643 states and 863 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:13:43,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:13:43,568 INFO L93 Difference]: Finished difference Result 1525 states and 2020 transitions. [2021-10-16 02:13:43,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:13:43,569 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2021-10-16 02:13:43,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:13:43,576 INFO L225 Difference]: With dead ends: 1525 [2021-10-16 02:13:43,576 INFO L226 Difference]: Without dead ends: 883 [2021-10-16 02:13:43,577 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:13:43,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2021-10-16 02:13:43,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 883. [2021-10-16 02:13:43,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 882 states have (on average 1.2732426303854876) internal successors, (1123), 882 states have internal predecessors, (1123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:13:43,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1123 transitions. [2021-10-16 02:13:43,607 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1123 transitions. Word has length 121 [2021-10-16 02:13:43,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:13:43,607 INFO L470 AbstractCegarLoop]: Abstraction has 883 states and 1123 transitions. [2021-10-16 02:13:43,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:13:43,608 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1123 transitions. [2021-10-16 02:13:43,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-10-16 02:13:43,611 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:13:43,611 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:13:43,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-16 02:13:43,612 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:13:43,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:13:43,612 INFO L82 PathProgramCache]: Analyzing trace with hash 1360778009, now seen corresponding path program 1 times [2021-10-16 02:13:43,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:13:43,613 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808313895] [2021-10-16 02:13:43,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:13:43,613 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:13:43,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:13:43,672 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-10-16 02:13:43,672 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:13:43,672 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808313895] [2021-10-16 02:13:43,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808313895] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:13:43,673 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:13:43,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:13:43,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352186206] [2021-10-16 02:13:43,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:13:43,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:13:43,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:13:43,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:13:43,675 INFO L87 Difference]: Start difference. First operand 883 states and 1123 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:13:44,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:13:44,049 INFO L93 Difference]: Finished difference Result 1765 states and 2245 transitions. [2021-10-16 02:13:44,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:13:44,050 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 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 135 [2021-10-16 02:13:44,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:13:44,057 INFO L225 Difference]: With dead ends: 1765 [2021-10-16 02:13:44,057 INFO L226 Difference]: Without dead ends: 883 [2021-10-16 02:13:44,059 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:13:44,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2021-10-16 02:13:44,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 883. [2021-10-16 02:13:44,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 882 states have (on average 1.2392290249433107) internal successors, (1093), 882 states have internal predecessors, (1093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:13:44,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1093 transitions. [2021-10-16 02:13:44,090 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1093 transitions. Word has length 135 [2021-10-16 02:13:44,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:13:44,090 INFO L470 AbstractCegarLoop]: Abstraction has 883 states and 1093 transitions. [2021-10-16 02:13:44,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:13:44,091 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1093 transitions. [2021-10-16 02:13:44,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-10-16 02:13:44,094 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:13:44,094 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-16 02:13:44,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-16 02:13:44,095 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:13:44,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:13:44,096 INFO L82 PathProgramCache]: Analyzing trace with hash 443080427, now seen corresponding path program 1 times [2021-10-16 02:13:44,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:13:44,096 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211593648] [2021-10-16 02:13:44,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:13:44,097 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:13:44,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:13:44,210 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:13:44,211 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:13:44,211 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211593648] [2021-10-16 02:13:44,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211593648] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:13:44,212 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:13:44,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 02:13:44,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69440258] [2021-10-16 02:13:44,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:13:44,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:13:44,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:13:44,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:13:44,214 INFO L87 Difference]: Start difference. First operand 883 states and 1093 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 2 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) [2021-10-16 02:13:44,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:13:44,638 INFO L93 Difference]: Finished difference Result 2325 states and 2921 transitions. [2021-10-16 02:13:44,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:13:44,639 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 2 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2021-10-16 02:13:44,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:13:44,649 INFO L225 Difference]: With dead ends: 2325 [2021-10-16 02:13:44,650 INFO L226 Difference]: Without dead ends: 1443 [2021-10-16 02:13:44,651 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:13:44,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1443 states. [2021-10-16 02:13:44,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1443 to 1443. [2021-10-16 02:13:44,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1443 states, 1442 states have (on average 1.2295423023578362) internal successors, (1773), 1442 states have internal predecessors, (1773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:13:44,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1443 states to 1443 states and 1773 transitions. [2021-10-16 02:13:44,695 INFO L78 Accepts]: Start accepts. Automaton has 1443 states and 1773 transitions. Word has length 141 [2021-10-16 02:13:44,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:13:44,695 INFO L470 AbstractCegarLoop]: Abstraction has 1443 states and 1773 transitions. [2021-10-16 02:13:44,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 2 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) [2021-10-16 02:13:44,696 INFO L276 IsEmpty]: Start isEmpty. Operand 1443 states and 1773 transitions. [2021-10-16 02:13:44,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-10-16 02:13:44,701 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:13:44,701 INFO L512 BasicCegarLoop]: trace histogram [4, 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, 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] [2021-10-16 02:13:44,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-16 02:13:44,702 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:13:44,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:13:44,703 INFO L82 PathProgramCache]: Analyzing trace with hash 56929703, now seen corresponding path program 1 times [2021-10-16 02:13:44,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:13:44,703 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034209366] [2021-10-16 02:13:44,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:13:44,704 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:13:44,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:13:44,825 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-16 02:13:44,825 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:13:44,825 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034209366] [2021-10-16 02:13:44,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034209366] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:13:44,826 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:13:44,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:13:44,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734556200] [2021-10-16 02:13:44,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:13:44,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:13:44,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:13:44,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:13:44,833 INFO L87 Difference]: Start difference. First operand 1443 states and 1773 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:13:45,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:13:45,283 INFO L93 Difference]: Finished difference Result 3525 states and 4456 transitions. [2021-10-16 02:13:45,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:13:45,294 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 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 146 [2021-10-16 02:13:45,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:13:45,310 INFO L225 Difference]: With dead ends: 3525 [2021-10-16 02:13:45,311 INFO L226 Difference]: Without dead ends: 2083 [2021-10-16 02:13:45,318 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:13:45,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2083 states. [2021-10-16 02:13:45,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2083 to 2083. [2021-10-16 02:13:45,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2083 states, 2082 states have (on average 1.245437079731028) internal successors, (2593), 2082 states have internal predecessors, (2593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:13:45,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2083 states to 2083 states and 2593 transitions. [2021-10-16 02:13:45,386 INFO L78 Accepts]: Start accepts. Automaton has 2083 states and 2593 transitions. Word has length 146 [2021-10-16 02:13:45,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:13:45,386 INFO L470 AbstractCegarLoop]: Abstraction has 2083 states and 2593 transitions. [2021-10-16 02:13:45,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:13:45,387 INFO L276 IsEmpty]: Start isEmpty. Operand 2083 states and 2593 transitions. [2021-10-16 02:13:45,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-10-16 02:13:45,393 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:13:45,394 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:13:45,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-16 02:13:45,394 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:13:45,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:13:45,395 INFO L82 PathProgramCache]: Analyzing trace with hash -619232363, now seen corresponding path program 1 times [2021-10-16 02:13:45,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:13:45,397 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335906085] [2021-10-16 02:13:45,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:13:45,398 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:13:45,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:13:45,508 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-16 02:13:45,508 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:13:45,508 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335906085] [2021-10-16 02:13:45,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335906085] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:13:45,509 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:13:45,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:13:45,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515150220] [2021-10-16 02:13:45,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:13:45,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:13:45,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:13:45,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:13:45,512 INFO L87 Difference]: Start difference. First operand 2083 states and 2593 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 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) [2021-10-16 02:13:45,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:13:45,972 INFO L93 Difference]: Finished difference Result 4565 states and 5660 transitions. [2021-10-16 02:13:45,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:13:45,973 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 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 155 [2021-10-16 02:13:45,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:13:45,984 INFO L225 Difference]: With dead ends: 4565 [2021-10-16 02:13:45,984 INFO L226 Difference]: Without dead ends: 1763 [2021-10-16 02:13:45,987 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:13:45,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1763 states. [2021-10-16 02:13:46,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1763 to 1763. [2021-10-16 02:13:46,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1763 states, 1762 states have (on average 1.2145289443813847) internal successors, (2140), 1762 states have internal predecessors, (2140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:13:46,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1763 states to 1763 states and 2140 transitions. [2021-10-16 02:13:46,042 INFO L78 Accepts]: Start accepts. Automaton has 1763 states and 2140 transitions. Word has length 155 [2021-10-16 02:13:46,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:13:46,042 INFO L470 AbstractCegarLoop]: Abstraction has 1763 states and 2140 transitions. [2021-10-16 02:13:46,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 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) [2021-10-16 02:13:46,043 INFO L276 IsEmpty]: Start isEmpty. Operand 1763 states and 2140 transitions. [2021-10-16 02:13:46,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-10-16 02:13:46,049 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:13:46,049 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:13:46,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-16 02:13:46,050 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:13:46,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:13:46,050 INFO L82 PathProgramCache]: Analyzing trace with hash 1119650218, now seen corresponding path program 1 times [2021-10-16 02:13:46,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:13:46,053 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297687016] [2021-10-16 02:13:46,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:13:46,054 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:13:46,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:13:46,116 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-10-16 02:13:46,116 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:13:46,116 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297687016] [2021-10-16 02:13:46,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297687016] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:13:46,117 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:13:46,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 02:13:46,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433744184] [2021-10-16 02:13:46,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:13:46,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:13:46,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:13:46,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:13:46,120 INFO L87 Difference]: Start difference. First operand 1763 states and 2140 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:13:46,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:13:46,288 INFO L93 Difference]: Finished difference Result 3205 states and 3915 transitions. [2021-10-16 02:13:46,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:13:46,289 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 0 states have call successors, (0), 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 187 [2021-10-16 02:13:46,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:13:46,296 INFO L225 Difference]: With dead ends: 3205 [2021-10-16 02:13:46,297 INFO L226 Difference]: Without dead ends: 1123 [2021-10-16 02:13:46,300 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:13:46,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2021-10-16 02:13:46,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 643. [2021-10-16 02:13:46,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 642 states have (on average 1.1121495327102804) internal successors, (714), 642 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:13:46,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 714 transitions. [2021-10-16 02:13:46,329 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 714 transitions. Word has length 187 [2021-10-16 02:13:46,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:13:46,329 INFO L470 AbstractCegarLoop]: Abstraction has 643 states and 714 transitions. [2021-10-16 02:13:46,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:13:46,330 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 714 transitions. [2021-10-16 02:13:46,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-10-16 02:13:46,334 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:13:46,334 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:13:46,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-16 02:13:46,335 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:13:46,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:13:46,336 INFO L82 PathProgramCache]: Analyzing trace with hash -595191763, now seen corresponding path program 1 times [2021-10-16 02:13:46,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:13:46,336 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581416543] [2021-10-16 02:13:46,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:13:46,341 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:13:46,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:13:46,482 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 242 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:13:46,483 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:13:46,483 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581416543] [2021-10-16 02:13:46,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581416543] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:13:46,489 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:13:46,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-16 02:13:46,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566623601] [2021-10-16 02:13:46,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:13:46,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:13:46,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:13:46,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:13:46,497 INFO L87 Difference]: Start difference. First operand 643 states and 714 transitions. Second operand has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:13:46,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:13:46,922 INFO L93 Difference]: Finished difference Result 1205 states and 1344 transitions. [2021-10-16 02:13:46,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:13:46,923 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 0 states have call successors, (0), 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 213 [2021-10-16 02:13:46,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:13:46,928 INFO L225 Difference]: With dead ends: 1205 [2021-10-16 02:13:46,928 INFO L226 Difference]: Without dead ends: 643 [2021-10-16 02:13:46,930 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:13:46,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2021-10-16 02:13:46,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 643. [2021-10-16 02:13:46,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 642 states have (on average 1.102803738317757) internal successors, (708), 642 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:13:46,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 708 transitions. [2021-10-16 02:13:46,952 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 708 transitions. Word has length 213 [2021-10-16 02:13:46,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:13:46,953 INFO L470 AbstractCegarLoop]: Abstraction has 643 states and 708 transitions. [2021-10-16 02:13:46,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:13:46,953 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 708 transitions. [2021-10-16 02:13:46,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2021-10-16 02:13:46,957 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:13:46,958 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:13:46,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-16 02:13:46,958 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:13:46,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:13:46,959 INFO L82 PathProgramCache]: Analyzing trace with hash -890425798, now seen corresponding path program 1 times [2021-10-16 02:13:46,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:13:46,959 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287743429] [2021-10-16 02:13:46,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:13:46,960 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:13:46,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:13:47,061 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 245 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-10-16 02:13:47,061 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:13:47,061 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287743429] [2021-10-16 02:13:47,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287743429] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:13:47,062 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:13:47,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-16 02:13:47,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632901491] [2021-10-16 02:13:47,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:13:47,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:13:47,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:13:47,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:13:47,064 INFO L87 Difference]: Start difference. First operand 643 states and 708 transitions. Second operand has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:13:47,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:13:47,441 INFO L93 Difference]: Finished difference Result 1205 states and 1332 transitions. [2021-10-16 02:13:47,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:13:47,442 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 0 states have call successors, (0), 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 226 [2021-10-16 02:13:47,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:13:47,446 INFO L225 Difference]: With dead ends: 1205 [2021-10-16 02:13:47,446 INFO L226 Difference]: Without dead ends: 643 [2021-10-16 02:13:47,447 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:13:47,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2021-10-16 02:13:47,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 643. [2021-10-16 02:13:47,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 642 states have (on average 1.0981308411214954) internal successors, (705), 642 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:13:47,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 705 transitions. [2021-10-16 02:13:47,465 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 705 transitions. Word has length 226 [2021-10-16 02:13:47,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:13:47,466 INFO L470 AbstractCegarLoop]: Abstraction has 643 states and 705 transitions. [2021-10-16 02:13:47,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:13:47,467 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 705 transitions. [2021-10-16 02:13:47,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2021-10-16 02:13:47,471 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:13:47,471 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 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] [2021-10-16 02:13:47,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-16 02:13:47,472 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:13:47,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:13:47,472 INFO L82 PathProgramCache]: Analyzing trace with hash 775708772, now seen corresponding path program 1 times [2021-10-16 02:13:47,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:13:47,473 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875199913] [2021-10-16 02:13:47,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:13:47,473 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:13:47,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:13:47,669 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 167 proven. 94 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-10-16 02:13:47,669 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:13:47,670 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875199913] [2021-10-16 02:13:47,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875199913] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 02:13:47,670 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168762672] [2021-10-16 02:13:47,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:13:47,671 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:13:47,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e041ece-ce67-4d9d-8928-cbf5f731cf62/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:13:47,675 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e041ece-ce67-4d9d-8928-cbf5f731cf62/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:13:47,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e041ece-ce67-4d9d-8928-cbf5f731cf62/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-16 02:13:47,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:13:47,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:13:47,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:13:48,721 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2021-10-16 02:13:48,721 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:13:49,482 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2021-10-16 02:13:49,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1168762672] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:13:49,482 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-16 02:13:49,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [4] total 5 [2021-10-16 02:13:49,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906918732] [2021-10-16 02:13:49,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:13:49,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:13:49,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:13:49,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:13:49,486 INFO L87 Difference]: Start difference. First operand 643 states and 705 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:13:49,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:13:49,597 INFO L93 Difference]: Finished difference Result 643 states and 705 transitions. [2021-10-16 02:13:49,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:13:49,598 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 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 248 [2021-10-16 02:13:49,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:13:49,599 INFO L225 Difference]: With dead ends: 643 [2021-10-16 02:13:49,599 INFO L226 Difference]: Without dead ends: 0 [2021-10-16 02:13:49,600 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 499 GetRequests, 494 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.5ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:13:49,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-16 02:13:49,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-16 02:13:49,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:13:49,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-16 02:13:49,601 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 248 [2021-10-16 02:13:49,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:13:49,601 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-16 02:13:49,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:13:49,602 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-16 02:13:49,602 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-16 02:13:49,605 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:13:49,644 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e041ece-ce67-4d9d-8928-cbf5f731cf62/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:13:49,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e041ece-ce67-4d9d-8928-cbf5f731cf62/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-10-16 02:13:49,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-16 02:13:49,823 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:13:49,842 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:13:49,843 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:13:50,197 INFO L857 garLoopResultBuilder]: For program point L301(lines 301 423) no Hoare annotation was computed. [2021-10-16 02:13:50,197 INFO L857 garLoopResultBuilder]: For program point L235(lines 235 423) no Hoare annotation was computed. [2021-10-16 02:13:50,197 INFO L857 garLoopResultBuilder]: For program point L169(lines 169 423) no Hoare annotation was computed. [2021-10-16 02:13:50,197 INFO L857 garLoopResultBuilder]: For program point L303(lines 303 423) no Hoare annotation was computed. [2021-10-16 02:13:50,197 INFO L857 garLoopResultBuilder]: For program point L105(lines 105 423) no Hoare annotation was computed. [2021-10-16 02:13:50,197 INFO L857 garLoopResultBuilder]: For program point L502-1(lines 39 608) no Hoare annotation was computed. [2021-10-16 02:13:50,197 INFO L857 garLoopResultBuilder]: For program point L40(lines 40 423) no Hoare annotation was computed. [2021-10-16 02:13:50,197 INFO L857 garLoopResultBuilder]: For program point L371(lines 371 423) no Hoare annotation was computed. [2021-10-16 02:13:50,197 INFO L857 garLoopResultBuilder]: For program point L505-1(lines 39 608) no Hoare annotation was computed. [2021-10-16 02:13:50,198 INFO L857 garLoopResultBuilder]: For program point L307(lines 307 423) no Hoare annotation was computed. [2021-10-16 02:13:50,198 INFO L857 garLoopResultBuilder]: For program point L175(lines 175 423) no Hoare annotation was computed. [2021-10-16 02:13:50,198 INFO L857 garLoopResultBuilder]: For program point L109(lines 109 423) no Hoare annotation was computed. [2021-10-16 02:13:50,198 INFO L857 garLoopResultBuilder]: For program point L506(line 506) no Hoare annotation was computed. [2021-10-16 02:13:50,198 INFO L857 garLoopResultBuilder]: For program point L242(lines 242 423) no Hoare annotation was computed. [2021-10-16 02:13:50,198 INFO L857 garLoopResultBuilder]: For program point L45(lines 45 423) no Hoare annotation was computed. [2021-10-16 02:13:50,198 INFO L857 garLoopResultBuilder]: For program point L244(lines 244 423) no Hoare annotation was computed. [2021-10-16 02:13:50,198 INFO L857 garLoopResultBuilder]: For program point L179(lines 179 423) no Hoare annotation was computed. [2021-10-16 02:13:50,198 INFO L857 garLoopResultBuilder]: For program point L378(lines 378 423) no Hoare annotation was computed. [2021-10-16 02:13:50,198 INFO L857 garLoopResultBuilder]: For program point L48(lines 48 423) no Hoare annotation was computed. [2021-10-16 02:13:50,199 INFO L857 garLoopResultBuilder]: For program point L247(lines 247 423) no Hoare annotation was computed. [2021-10-16 02:13:50,199 INFO L857 garLoopResultBuilder]: For program point L116(lines 116 423) no Hoare annotation was computed. [2021-10-16 02:13:50,199 INFO L857 garLoopResultBuilder]: For program point L52(lines 52 423) no Hoare annotation was computed. [2021-10-16 02:13:50,199 INFO L857 garLoopResultBuilder]: For program point L185(lines 185 423) no Hoare annotation was computed. [2021-10-16 02:13:50,199 INFO L857 garLoopResultBuilder]: For program point L385(lines 385 423) no Hoare annotation was computed. [2021-10-16 02:13:50,199 INFO L857 garLoopResultBuilder]: For program point L319(lines 319 423) no Hoare annotation was computed. [2021-10-16 02:13:50,199 INFO L857 garLoopResultBuilder]: For program point L189(lines 189 423) no Hoare annotation was computed. [2021-10-16 02:13:50,199 INFO L857 garLoopResultBuilder]: For program point L123(lines 123 423) no Hoare annotation was computed. [2021-10-16 02:13:50,199 INFO L857 garLoopResultBuilder]: For program point L57(lines 57 423) no Hoare annotation was computed. [2021-10-16 02:13:50,199 INFO L857 garLoopResultBuilder]: For program point L388(lines 388 423) no Hoare annotation was computed. [2021-10-16 02:13:50,199 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-16 02:13:50,200 INFO L857 garLoopResultBuilder]: For program point L390(lines 390 423) no Hoare annotation was computed. [2021-10-16 02:13:50,200 INFO L857 garLoopResultBuilder]: For program point L324(lines 324 423) no Hoare annotation was computed. [2021-10-16 02:13:50,200 INFO L857 garLoopResultBuilder]: For program point L258(lines 258 423) no Hoare annotation was computed. [2021-10-16 02:13:50,200 INFO L857 garLoopResultBuilder]: For program point L60(lines 60 423) no Hoare annotation was computed. [2021-10-16 02:13:50,200 INFO L857 garLoopResultBuilder]: For program point L195(lines 195 423) no Hoare annotation was computed. [2021-10-16 02:13:50,200 INFO L857 garLoopResultBuilder]: For program point L129(lines 129 423) no Hoare annotation was computed. [2021-10-16 02:13:50,200 INFO L857 garLoopResultBuilder]: For program point L64(lines 64 423) no Hoare annotation was computed. [2021-10-16 02:13:50,200 INFO L857 garLoopResultBuilder]: For program point L263(lines 263 423) no Hoare annotation was computed. [2021-10-16 02:13:50,200 INFO L857 garLoopResultBuilder]: For program point L197(lines 197 423) no Hoare annotation was computed. [2021-10-16 02:13:50,200 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 506) no Hoare annotation was computed. [2021-10-16 02:13:50,201 INFO L857 garLoopResultBuilder]: For program point L199(lines 199 423) no Hoare annotation was computed. [2021-10-16 02:13:50,201 INFO L857 garLoopResultBuilder]: For program point L133(lines 133 423) no Hoare annotation was computed. [2021-10-16 02:13:50,201 INFO L857 garLoopResultBuilder]: For program point L399(lines 399 423) no Hoare annotation was computed. [2021-10-16 02:13:50,201 INFO L857 garLoopResultBuilder]: For program point L201(lines 201 423) no Hoare annotation was computed. [2021-10-16 02:13:50,201 INFO L857 garLoopResultBuilder]: For program point L69(lines 69 423) no Hoare annotation was computed. [2021-10-16 02:13:50,201 INFO L857 garLoopResultBuilder]: For program point L269(lines 269 423) no Hoare annotation was computed. [2021-10-16 02:13:50,201 INFO L857 garLoopResultBuilder]: For program point L204(lines 204 423) no Hoare annotation was computed. [2021-10-16 02:13:50,201 INFO L857 garLoopResultBuilder]: For program point L271(lines 271 423) no Hoare annotation was computed. [2021-10-16 02:13:50,201 INFO L857 garLoopResultBuilder]: For program point L404(lines 404 423) no Hoare annotation was computed. [2021-10-16 02:13:50,201 INFO L857 garLoopResultBuilder]: For program point L338(lines 338 423) no Hoare annotation was computed. [2021-10-16 02:13:50,202 INFO L857 garLoopResultBuilder]: For program point L140(lines 140 423) no Hoare annotation was computed. [2021-10-16 02:13:50,202 INFO L857 garLoopResultBuilder]: For program point L75(lines 75 423) no Hoare annotation was computed. [2021-10-16 02:13:50,202 INFO L857 garLoopResultBuilder]: For program point L208(lines 208 423) no Hoare annotation was computed. [2021-10-16 02:13:50,202 INFO L857 garLoopResultBuilder]: For program point L341(lines 341 423) no Hoare annotation was computed. [2021-10-16 02:13:50,202 INFO L857 garLoopResultBuilder]: For program point L408(lines 408 423) no Hoare annotation was computed. [2021-10-16 02:13:50,202 INFO L857 garLoopResultBuilder]: For program point L144(lines 144 423) no Hoare annotation was computed. [2021-10-16 02:13:50,202 INFO L853 garLoopResultBuilder]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse6 (<= 8 ~a17~0)) (.cse7 (<= ~a17~0 8)) (.cse3 (<= ~a28~0 10)) (.cse4 (= ~a25~0 0)) (.cse0 (<= 9 ~a28~0)) (.cse5 (= ~a25~0 1)) (.cse1 (<= ~a17~0 7)) (.cse2 (= ~a11~0 0)) (.cse8 (= ~a19~0 1))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse5 .cse6 .cse7 .cse3) (and .cse6 .cse7 .cse3 .cse4) (and (<= 10 ~a28~0) .cse1 .cse3 .cse4) (and (= ~a25~0 ~a11~0) .cse5 .cse1 .cse8 (<= ~a28~0 7)) (and .cse5 .cse6 .cse7 .cse8) (and .cse0 .cse5 .cse1 .cse3) (and .cse1 .cse8 .cse4) (and .cse0 .cse5 .cse1 .cse2 .cse8))) [2021-10-16 02:13:50,203 INFO L857 garLoopResultBuilder]: For program point L79(lines 79 423) no Hoare annotation was computed. [2021-10-16 02:13:50,203 INFO L857 garLoopResultBuilder]: For program point L212(lines 212 423) no Hoare annotation was computed. [2021-10-16 02:13:50,203 INFO L860 garLoopResultBuilder]: At program point L610(lines 610 627) the Hoare annotation is: true [2021-10-16 02:13:50,203 INFO L857 garLoopResultBuilder]: For program point L412(lines 412 423) no Hoare annotation was computed. [2021-10-16 02:13:50,203 INFO L857 garLoopResultBuilder]: For program point L347(lines 347 423) no Hoare annotation was computed. [2021-10-16 02:13:50,203 INFO L857 garLoopResultBuilder]: For program point L149(lines 149 423) no Hoare annotation was computed. [2021-10-16 02:13:50,203 INFO L857 garLoopResultBuilder]: For program point L414(lines 414 423) no Hoare annotation was computed. [2021-10-16 02:13:50,203 INFO L857 garLoopResultBuilder]: For program point L84(lines 84 423) no Hoare annotation was computed. [2021-10-16 02:13:50,203 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-16 02:13:50,203 INFO L857 garLoopResultBuilder]: For program point L417(lines 417 423) no Hoare annotation was computed. [2021-10-16 02:13:50,203 INFO L857 garLoopResultBuilder]: For program point L153(lines 153 423) no Hoare annotation was computed. [2021-10-16 02:13:50,204 INFO L853 garLoopResultBuilder]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse6 (<= 8 ~a17~0)) (.cse7 (<= ~a17~0 8)) (.cse3 (<= ~a28~0 10)) (.cse4 (= ~a25~0 0)) (.cse0 (<= 9 ~a28~0)) (.cse5 (= ~a25~0 1)) (.cse1 (<= ~a17~0 7)) (.cse2 (= ~a11~0 0)) (.cse8 (= ~a19~0 1))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse5 .cse6 .cse7 .cse3) (and .cse6 .cse7 .cse3 .cse4) (and (<= 10 ~a28~0) .cse1 .cse3 .cse4) (and (= ~a25~0 ~a11~0) .cse5 .cse1 .cse8 (<= ~a28~0 7)) (and .cse5 .cse6 .cse7 .cse8) (and .cse0 .cse5 .cse1 .cse3) (and .cse1 .cse8 .cse4) (and .cse0 .cse5 .cse1 .cse2 .cse8))) [2021-10-16 02:13:50,204 INFO L857 garLoopResultBuilder]: For program point L286(lines 286 423) no Hoare annotation was computed. [2021-10-16 02:13:50,204 INFO L857 garLoopResultBuilder]: For program point L419(lines 419 423) no Hoare annotation was computed. [2021-10-16 02:13:50,204 INFO L857 garLoopResultBuilder]: For program point L222(lines 222 423) no Hoare annotation was computed. [2021-10-16 02:13:50,204 INFO L857 garLoopResultBuilder]: For program point L290(lines 290 423) no Hoare annotation was computed. [2021-10-16 02:13:50,204 INFO L857 garLoopResultBuilder]: For program point L158(lines 158 423) no Hoare annotation was computed. [2021-10-16 02:13:50,204 INFO L857 garLoopResultBuilder]: For program point L92(lines 92 423) no Hoare annotation was computed. [2021-10-16 02:13:50,204 INFO L857 garLoopResultBuilder]: For program point L621(line 621) no Hoare annotation was computed. [2021-10-16 02:13:50,204 INFO L857 garLoopResultBuilder]: For program point L225(lines 225 423) no Hoare annotation was computed. [2021-10-16 02:13:50,205 INFO L857 garLoopResultBuilder]: For program point L359(lines 359 423) no Hoare annotation was computed. [2021-10-16 02:13:50,205 INFO L857 garLoopResultBuilder]: For program point L293(lines 293 423) no Hoare annotation was computed. [2021-10-16 02:13:50,205 INFO L857 garLoopResultBuilder]: For program point L228(lines 228 423) no Hoare annotation was computed. [2021-10-16 02:13:50,205 INFO L857 garLoopResultBuilder]: For program point L296(lines 296 423) no Hoare annotation was computed. [2021-10-16 02:13:50,205 INFO L857 garLoopResultBuilder]: For program point L164(lines 164 423) no Hoare annotation was computed. [2021-10-16 02:13:50,205 INFO L857 garLoopResultBuilder]: For program point L364(lines 364 423) no Hoare annotation was computed. [2021-10-16 02:13:50,205 INFO L857 garLoopResultBuilder]: For program point L233(lines 233 423) no Hoare annotation was computed. [2021-10-16 02:13:50,205 INFO L857 garLoopResultBuilder]: For program point L101(lines 101 423) no Hoare annotation was computed. [2021-10-16 02:13:50,211 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:13:50,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:13:50 BoogieIcfgContainer [2021-10-16 02:13:50,244 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:13:50,244 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:13:50,244 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:13:50,245 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:13:50,245 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:13:39" (3/4) ... [2021-10-16 02:13:50,248 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-16 02:13:50,283 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 114 nodes and edges [2021-10-16 02:13:50,298 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2021-10-16 02:13:50,300 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-16 02:13:50,302 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-16 02:13:50,450 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e041ece-ce67-4d9d-8928-cbf5f731cf62/bin/utaipan-mTDlp9Zugs/witness.graphml [2021-10-16 02:13:50,450 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:13:50,452 INFO L168 Benchmark]: Toolchain (without parser) took 13172.49 ms. Allocated memory was 132.1 MB in the beginning and 226.5 MB in the end (delta: 94.4 MB). Free memory was 97.2 MB in the beginning and 180.4 MB in the end (delta: -83.2 MB). Peak memory consumption was 127.6 MB. Max. memory is 16.1 GB. [2021-10-16 02:13:50,452 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 92.3 MB. Free memory is still 46.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:13:50,453 INFO L168 Benchmark]: CACSL2BoogieTranslator took 580.09 ms. Allocated memory is still 132.1 MB. Free memory was 96.8 MB in the beginning and 93.0 MB in the end (delta: 3.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:13:50,453 INFO L168 Benchmark]: Boogie Procedure Inliner took 93.62 ms. Allocated memory is still 132.1 MB. Free memory was 93.0 MB in the beginning and 87.2 MB in the end (delta: 5.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-16 02:13:50,454 INFO L168 Benchmark]: Boogie Preprocessor took 98.34 ms. Allocated memory is still 132.1 MB. Free memory was 87.2 MB in the beginning and 83.0 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-16 02:13:50,454 INFO L168 Benchmark]: RCFGBuilder took 1936.42 ms. Allocated memory is still 132.1 MB. Free memory was 83.0 MB in the beginning and 83.9 MB in the end (delta: -906.5 kB). Peak memory consumption was 58.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:13:50,455 INFO L168 Benchmark]: TraceAbstraction took 10247.09 ms. Allocated memory was 132.1 MB in the beginning and 226.5 MB in the end (delta: 94.4 MB). Free memory was 83.3 MB in the beginning and 67.9 MB in the end (delta: 15.5 MB). Peak memory consumption was 110.9 MB. Max. memory is 16.1 GB. [2021-10-16 02:13:50,455 INFO L168 Benchmark]: Witness Printer took 205.93 ms. Allocated memory is still 226.5 MB. Free memory was 67.9 MB in the beginning and 180.4 MB in the end (delta: -112.5 MB). Peak memory consumption was 2.8 MB. Max. memory is 16.1 GB. [2021-10-16 02:13:50,457 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 92.3 MB. Free memory is still 46.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 580.09 ms. Allocated memory is still 132.1 MB. Free memory was 96.8 MB in the beginning and 93.0 MB in the end (delta: 3.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 93.62 ms. Allocated memory is still 132.1 MB. Free memory was 93.0 MB in the beginning and 87.2 MB in the end (delta: 5.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 98.34 ms. Allocated memory is still 132.1 MB. Free memory was 87.2 MB in the beginning and 83.0 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1936.42 ms. Allocated memory is still 132.1 MB. Free memory was 83.0 MB in the beginning and 83.9 MB in the end (delta: -906.5 kB). Peak memory consumption was 58.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 10247.09 ms. Allocated memory was 132.1 MB in the beginning and 226.5 MB in the end (delta: 94.4 MB). Free memory was 83.3 MB in the beginning and 67.9 MB in the end (delta: 15.5 MB). Peak memory consumption was 110.9 MB. Max. memory is 16.1 GB. * Witness Printer took 205.93 ms. Allocated memory is still 226.5 MB. Free memory was 67.9 MB in the beginning and 180.4 MB in the end (delta: -112.5 MB). Peak memory consumption was 2.8 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 506]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 10131.1ms, OverallIterations: 14, TraceHistogramMax: 6, EmptinessCheckTime: 69.5ms, AutomataDifference: 5289.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 378.2ms, InitialAbstractionConstructionTime: 11.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1153 SDtfs, 916 SDslu, 95 SDs, 0 SdLazy, 3286 SolverSat, 646 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3652.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 535 GetRequests, 515 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 75.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=2083occurred in iteration=9, InterpolantAutomatonStates: 44, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 444.5ms AutomataMinimizationTime, 14 MinimizatonAttempts, 480 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 47 NumberOfFragments, 249 HoareAnnotationTreeSize, 3 FomulaSimplifications, 626 FormulaSimplificationTreeSizeReduction, 38.8ms HoareSimplificationTime, 3 FomulaSimplificationsInter, 158 FormulaSimplificationTreeSizeReductionInter, 331.8ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 153.4ms SsaConstructionTime, 469.9ms SatisfiabilityAnalysisTime, 2757.4ms InterpolantComputationTime, 2275 NumberOfCodeBlocks, 2275 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 2507 ConstructedInterpolants, 0 QuantifiedInterpolants, 6883 SizeOfPredicates, 0 NumberOfNonLiveVariables, 431 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 16 InterpolantComputations, 15 PerfectInterpolantSequences, 2031/2125 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 616]: Loop Invariant Derived loop invariant: (((((((((((9 <= a28 && a17 <= 7) && a11 == 0) && a28 <= 10) && a25 == 0) || (((a25 == 1 && 8 <= a17) && a17 <= 8) && a28 <= 10)) || (((8 <= a17 && a17 <= 8) && a28 <= 10) && a25 == 0)) || (((10 <= a28 && a17 <= 7) && a28 <= 10) && a25 == 0)) || ((((a25 == a11 && a25 == 1) && a17 <= 7) && a19 == 1) && a28 <= 7)) || (((a25 == 1 && 8 <= a17) && a17 <= 8) && a19 == 1)) || (((9 <= a28 && a25 == 1) && a17 <= 7) && a28 <= 10)) || ((a17 <= 7 && a19 == 1) && a25 == 0)) || ((((9 <= a28 && a25 == 1) && a17 <= 7) && a11 == 0) && a19 == 1) - InvariantResult [Line: 610]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: (((((((((((9 <= a28 && a17 <= 7) && a11 == 0) && a28 <= 10) && a25 == 0) || (((a25 == 1 && 8 <= a17) && a17 <= 8) && a28 <= 10)) || (((8 <= a17 && a17 <= 8) && a28 <= 10) && a25 == 0)) || (((10 <= a28 && a17 <= 7) && a28 <= 10) && a25 == 0)) || ((((a25 == a11 && a25 == 1) && a17 <= 7) && a19 == 1) && a28 <= 7)) || (((a25 == 1 && 8 <= a17) && a17 <= 8) && a19 == 1)) || (((9 <= a28 && a25 == 1) && a17 <= 7) && a28 <= 10)) || ((a17 <= 7 && a19 == 1) && a25 == 0)) || ((((9 <= a28 && a25 == 1) && a17 <= 7) && a11 == 0) && a19 == 1) RESULT: Ultimate proved your program to be correct! [2021-10-16 02:13:50,528 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e041ece-ce67-4d9d-8928-cbf5f731cf62/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...