./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label49.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3165e49a-84a9-44e3-bf87-1406e187ec38/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3165e49a-84a9-44e3-bf87-1406e187ec38/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3165e49a-84a9-44e3-bf87-1406e187ec38/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3165e49a-84a9-44e3-bf87-1406e187ec38/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label49.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3165e49a-84a9-44e3-bf87-1406e187ec38/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3165e49a-84a9-44e3-bf87-1406e187ec38/bin/utaipan-UUZaoUuFF8 --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 0a3248fe507879b589534990871f4662b2d97c2767e532585e632d27fc18c598 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 00:53:24,570 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 00:53:24,573 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 00:53:24,620 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 00:53:24,621 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 00:53:24,622 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 00:53:24,624 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 00:53:24,636 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 00:53:24,640 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 00:53:24,648 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 00:53:24,649 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 00:53:24,651 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 00:53:24,652 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 00:53:24,654 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 00:53:24,658 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 00:53:24,664 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 00:53:24,665 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 00:53:24,666 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 00:53:24,669 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 00:53:24,671 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 00:53:24,673 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 00:53:24,677 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 00:53:24,680 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 00:53:24,681 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 00:53:24,691 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 00:53:24,692 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 00:53:24,692 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 00:53:24,694 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 00:53:24,695 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 00:53:24,697 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 00:53:24,697 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 00:53:24,698 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 00:53:24,700 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 00:53:24,701 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 00:53:24,703 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 00:53:24,703 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 00:53:24,704 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 00:53:24,705 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 00:53:24,705 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 00:53:24,706 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 00:53:24,706 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 00:53:24,707 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3165e49a-84a9-44e3-bf87-1406e187ec38/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 00:53:24,755 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 00:53:24,756 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 00:53:24,758 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 00:53:24,759 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 00:53:24,759 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 00:53:24,759 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 00:53:24,759 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 00:53:24,760 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 00:53:24,765 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 00:53:24,765 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 00:53:24,765 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 00:53:24,765 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 00:53:24,766 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 00:53:24,766 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 00:53:24,766 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 00:53:24,767 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 00:53:24,767 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 00:53:24,767 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 00:53:24,767 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 00:53:24,768 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 00:53:24,768 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 00:53:24,768 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 00:53:24,768 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 00:53:24,768 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 00:53:24,769 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 00:53:24,769 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 00:53:24,769 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 00:53:24,769 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 00:53:24,770 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 00:53:24,770 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 00:53:24,770 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:53:24,770 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 00:53:24,770 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 00:53:24,771 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 00:53:24,771 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 00:53:24,771 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 00:53:24,771 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 00:53:24,771 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 00:53:24,771 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 00:53:24,772 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_3165e49a-84a9-44e3-bf87-1406e187ec38/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3165e49a-84a9-44e3-bf87-1406e187ec38/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0a3248fe507879b589534990871f4662b2d97c2767e532585e632d27fc18c598 [2021-11-07 00:53:25,047 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 00:53:25,076 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 00:53:25,079 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 00:53:25,080 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 00:53:25,081 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 00:53:25,083 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3165e49a-84a9-44e3-bf87-1406e187ec38/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/eca-rers2012/Problem01_label49.c [2021-11-07 00:53:25,160 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3165e49a-84a9-44e3-bf87-1406e187ec38/bin/utaipan-UUZaoUuFF8/data/58bc15c0a/a6c999faf33c4707b38d13bd88c0739b/FLAG83ac187bb [2021-11-07 00:53:25,740 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 00:53:25,741 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3165e49a-84a9-44e3-bf87-1406e187ec38/sv-benchmarks/c/eca-rers2012/Problem01_label49.c [2021-11-07 00:53:25,755 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3165e49a-84a9-44e3-bf87-1406e187ec38/bin/utaipan-UUZaoUuFF8/data/58bc15c0a/a6c999faf33c4707b38d13bd88c0739b/FLAG83ac187bb [2021-11-07 00:53:25,973 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3165e49a-84a9-44e3-bf87-1406e187ec38/bin/utaipan-UUZaoUuFF8/data/58bc15c0a/a6c999faf33c4707b38d13bd88c0739b [2021-11-07 00:53:25,976 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 00:53:25,979 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 00:53:25,981 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 00:53:25,982 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 00:53:25,986 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 00:53:25,987 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:53:25" (1/1) ... [2021-11-07 00:53:25,988 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cb0990f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:25, skipping insertion in model container [2021-11-07 00:53:25,990 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:53:25" (1/1) ... [2021-11-07 00:53:25,997 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 00:53:26,060 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 00:53:26,391 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_3165e49a-84a9-44e3-bf87-1406e187ec38/sv-benchmarks/c/eca-rers2012/Problem01_label49.c[18854,18867] [2021-11-07 00:53:26,422 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:53:26,432 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 00:53:26,558 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_3165e49a-84a9-44e3-bf87-1406e187ec38/sv-benchmarks/c/eca-rers2012/Problem01_label49.c[18854,18867] [2021-11-07 00:53:26,569 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:53:26,584 INFO L208 MainTranslator]: Completed translation [2021-11-07 00:53:26,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:26 WrapperNode [2021-11-07 00:53:26,585 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 00:53:26,586 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 00:53:26,587 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 00:53:26,587 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 00:53:26,594 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:26" (1/1) ... [2021-11-07 00:53:26,613 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:26" (1/1) ... [2021-11-07 00:53:26,660 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 00:53:26,661 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 00:53:26,661 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 00:53:26,661 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 00:53:26,669 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:26" (1/1) ... [2021-11-07 00:53:26,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:26" (1/1) ... [2021-11-07 00:53:26,674 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:26" (1/1) ... [2021-11-07 00:53:26,674 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:26" (1/1) ... [2021-11-07 00:53:26,697 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:26" (1/1) ... [2021-11-07 00:53:26,719 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:26" (1/1) ... [2021-11-07 00:53:26,723 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:26" (1/1) ... [2021-11-07 00:53:26,729 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 00:53:26,730 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 00:53:26,731 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 00:53:26,731 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 00:53:26,732 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:26" (1/1) ... [2021-11-07 00:53:26,756 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:53:26,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3165e49a-84a9-44e3-bf87-1406e187ec38/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 00:53:26,793 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3165e49a-84a9-44e3-bf87-1406e187ec38/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 00:53:26,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3165e49a-84a9-44e3-bf87-1406e187ec38/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 00:53:26,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 00:53:26,832 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 00:53:26,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 00:53:26,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 00:53:28,553 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 00:53:28,554 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-11-07 00:53:28,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:53:28 BoogieIcfgContainer [2021-11-07 00:53:28,556 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 00:53:28,558 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 00:53:28,558 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 00:53:28,561 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 00:53:28,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:53:25" (1/3) ... [2021-11-07 00:53:28,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64dbefbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:53:28, skipping insertion in model container [2021-11-07 00:53:28,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:26" (2/3) ... [2021-11-07 00:53:28,563 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64dbefbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:53:28, skipping insertion in model container [2021-11-07 00:53:28,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:53:28" (3/3) ... [2021-11-07 00:53:28,566 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label49.c [2021-11-07 00:53:28,575 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 00:53:28,575 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 00:53:28,639 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 00:53:28,647 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, mAutomataTypeConcurrency=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 [2021-11-07 00:53:28,647 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 00:53:28,666 INFO L276 IsEmpty]: Start isEmpty. Operand has 76 states, 74 states have (on average 1.945945945945946) internal successors, (144), 75 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) [2021-11-07 00:53:28,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-07 00:53:28,677 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:53:28,678 INFO L513 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] [2021-11-07 00:53:28,678 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 00:53:28,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:53:28,692 INFO L85 PathProgramCache]: Analyzing trace with hash 379023751, now seen corresponding path program 1 times [2021-11-07 00:53:28,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 00:53:28,705 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117869706] [2021-11-07 00:53:28,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:53:28,706 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 00:53:28,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:53:29,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:53:29,121 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 00:53:29,121 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117869706] [2021-11-07 00:53:29,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117869706] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 00:53:29,122 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:53:29,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 00:53:29,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363520890] [2021-11-07 00:53:29,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 00:53:29,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 00:53:29,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 00:53:29,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 00:53:29,153 INFO L87 Difference]: Start difference. First operand has 76 states, 74 states have (on average 1.945945945945946) internal successors, (144), 75 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) Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:29,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:53:29,608 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2021-11-07 00:53:29,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 00:53:29,610 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2021-11-07 00:53:29,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:53:29,622 INFO L225 Difference]: With dead ends: 224 [2021-11-07 00:53:29,622 INFO L226 Difference]: Without dead ends: 145 [2021-11-07 00:53:29,625 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 00:53:29,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-11-07 00:53:29,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2021-11-07 00:53:29,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.8819444444444444) internal successors, (271), 144 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:29,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 271 transitions. [2021-11-07 00:53:29,673 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 271 transitions. Word has length 71 [2021-11-07 00:53:29,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:53:29,674 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 271 transitions. [2021-11-07 00:53:29,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:29,675 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 271 transitions. [2021-11-07 00:53:29,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-07 00:53:29,679 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:53:29,679 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 00:53:29,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 00:53:29,680 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 00:53:29,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:53:29,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1708130751, now seen corresponding path program 1 times [2021-11-07 00:53:29,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 00:53:29,681 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433510317] [2021-11-07 00:53:29,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:53:29,682 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 00:53:29,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:53:29,731 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:53:29,731 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 00:53:29,731 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433510317] [2021-11-07 00:53:29,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433510317] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 00:53:29,732 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:53:29,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 00:53:29,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875479101] [2021-11-07 00:53:29,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 00:53:29,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 00:53:29,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 00:53:29,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 00:53:29,736 INFO L87 Difference]: Start difference. First operand 145 states and 271 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:30,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:53:30,106 INFO L93 Difference]: Finished difference Result 431 states and 810 transitions. [2021-11-07 00:53:30,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 00:53:30,107 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2021-11-07 00:53:30,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:53:30,110 INFO L225 Difference]: With dead ends: 431 [2021-11-07 00:53:30,111 INFO L226 Difference]: Without dead ends: 287 [2021-11-07 00:53:30,112 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 00:53:30,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-11-07 00:53:30,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2021-11-07 00:53:30,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 1.7622377622377623) internal successors, (504), 286 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:30,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 504 transitions. [2021-11-07 00:53:30,139 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 504 transitions. Word has length 76 [2021-11-07 00:53:30,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:53:30,140 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 504 transitions. [2021-11-07 00:53:30,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:30,140 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 504 transitions. [2021-11-07 00:53:30,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-07 00:53:30,144 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:53:30,144 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 00:53:30,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 00:53:30,145 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 00:53:30,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:53:30,146 INFO L85 PathProgramCache]: Analyzing trace with hash 714042470, now seen corresponding path program 1 times [2021-11-07 00:53:30,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 00:53:30,146 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903413242] [2021-11-07 00:53:30,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:53:30,147 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 00:53:30,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:53:30,249 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:53:30,250 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 00:53:30,250 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903413242] [2021-11-07 00:53:30,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903413242] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 00:53:30,251 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:53:30,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 00:53:30,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644953794] [2021-11-07 00:53:30,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 00:53:30,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 00:53:30,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 00:53:30,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 00:53:30,261 INFO L87 Difference]: Start difference. First operand 287 states and 504 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:30,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:53:30,601 INFO L93 Difference]: Finished difference Result 786 states and 1371 transitions. [2021-11-07 00:53:30,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 00:53:30,602 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2021-11-07 00:53:30,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:53:30,606 INFO L225 Difference]: With dead ends: 786 [2021-11-07 00:53:30,606 INFO L226 Difference]: Without dead ends: 500 [2021-11-07 00:53:30,608 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 00:53:30,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2021-11-07 00:53:30,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 500. [2021-11-07 00:53:30,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 499 states have (on average 1.535070140280561) internal successors, (766), 499 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:30,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 766 transitions. [2021-11-07 00:53:30,641 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 766 transitions. Word has length 86 [2021-11-07 00:53:30,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:53:30,641 INFO L470 AbstractCegarLoop]: Abstraction has 500 states and 766 transitions. [2021-11-07 00:53:30,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:30,642 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 766 transitions. [2021-11-07 00:53:30,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-07 00:53:30,647 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:53:30,647 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2021-11-07 00:53:30,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 00:53:30,647 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 00:53:30,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:53:30,648 INFO L85 PathProgramCache]: Analyzing trace with hash 763851766, now seen corresponding path program 1 times [2021-11-07 00:53:30,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 00:53:30,649 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251504469] [2021-11-07 00:53:30,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:53:30,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 00:53:30,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:53:30,709 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 00:53:30,709 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 00:53:30,710 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251504469] [2021-11-07 00:53:30,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251504469] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 00:53:30,710 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:53:30,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 00:53:30,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566175662] [2021-11-07 00:53:30,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 00:53:30,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 00:53:30,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 00:53:30,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 00:53:30,714 INFO L87 Difference]: Start difference. First operand 500 states and 766 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:31,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:53:31,052 INFO L93 Difference]: Finished difference Result 1141 states and 1764 transitions. [2021-11-07 00:53:31,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 00:53:31,053 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 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 87 [2021-11-07 00:53:31,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:53:31,057 INFO L225 Difference]: With dead ends: 1141 [2021-11-07 00:53:31,057 INFO L226 Difference]: Without dead ends: 642 [2021-11-07 00:53:31,061 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 00:53:31,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2021-11-07 00:53:31,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 642. [2021-11-07 00:53:31,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 641 states have (on average 1.4555382215288613) internal successors, (933), 641 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:31,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 933 transitions. [2021-11-07 00:53:31,099 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 933 transitions. Word has length 87 [2021-11-07 00:53:31,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:53:31,100 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 933 transitions. [2021-11-07 00:53:31,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:31,100 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 933 transitions. [2021-11-07 00:53:31,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-07 00:53:31,103 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:53:31,104 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:53:31,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 00:53:31,104 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 00:53:31,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:53:31,114 INFO L85 PathProgramCache]: Analyzing trace with hash -2013610194, now seen corresponding path program 1 times [2021-11-07 00:53:31,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 00:53:31,115 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030285450] [2021-11-07 00:53:31,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:53:31,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 00:53:31,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:53:31,242 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:53:31,242 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 00:53:31,243 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030285450] [2021-11-07 00:53:31,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030285450] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 00:53:31,243 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:53:31,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 00:53:31,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998639139] [2021-11-07 00:53:31,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 00:53:31,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 00:53:31,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 00:53:31,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 00:53:31,247 INFO L87 Difference]: Start difference. First operand 642 states and 933 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:31,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:53:31,728 INFO L93 Difference]: Finished difference Result 1709 states and 2514 transitions. [2021-11-07 00:53:31,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 00:53:31,729 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 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 90 [2021-11-07 00:53:31,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:53:31,735 INFO L225 Difference]: With dead ends: 1709 [2021-11-07 00:53:31,735 INFO L226 Difference]: Without dead ends: 1068 [2021-11-07 00:53:31,736 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 00:53:31,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2021-11-07 00:53:31,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 997. [2021-11-07 00:53:31,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 997 states, 996 states have (on average 1.4086345381526104) internal successors, (1403), 996 states have internal predecessors, (1403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:31,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1403 transitions. [2021-11-07 00:53:31,786 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1403 transitions. Word has length 90 [2021-11-07 00:53:31,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:53:31,786 INFO L470 AbstractCegarLoop]: Abstraction has 997 states and 1403 transitions. [2021-11-07 00:53:31,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:31,787 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1403 transitions. [2021-11-07 00:53:31,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-07 00:53:31,790 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:53:31,790 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:53:31,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 00:53:31,791 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 00:53:31,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:53:31,791 INFO L85 PathProgramCache]: Analyzing trace with hash 683580783, now seen corresponding path program 1 times [2021-11-07 00:53:31,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 00:53:31,792 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53521838] [2021-11-07 00:53:31,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:53:31,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 00:53:31,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:53:31,960 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:53:31,963 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 00:53:31,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53521838] [2021-11-07 00:53:31,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53521838] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 00:53:31,964 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:53:31,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 00:53:31,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021720845] [2021-11-07 00:53:31,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 00:53:31,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 00:53:31,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 00:53:31,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 00:53:31,970 INFO L87 Difference]: Start difference. First operand 997 states and 1403 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:32,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:53:32,307 INFO L93 Difference]: Finished difference Result 1993 states and 2805 transitions. [2021-11-07 00:53:32,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 00:53:32,308 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2021-11-07 00:53:32,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:53:32,316 INFO L225 Difference]: With dead ends: 1993 [2021-11-07 00:53:32,316 INFO L226 Difference]: Without dead ends: 997 [2021-11-07 00:53:32,318 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 00:53:32,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2021-11-07 00:53:32,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 784. [2021-11-07 00:53:32,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 784 states, 783 states have (on average 1.301404853128991) internal successors, (1019), 783 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:32,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1019 transitions. [2021-11-07 00:53:32,345 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1019 transitions. Word has length 108 [2021-11-07 00:53:32,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:53:32,345 INFO L470 AbstractCegarLoop]: Abstraction has 784 states and 1019 transitions. [2021-11-07 00:53:32,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:32,346 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1019 transitions. [2021-11-07 00:53:32,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-11-07 00:53:32,348 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:53:32,349 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:53:32,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 00:53:32,349 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 00:53:32,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:53:32,350 INFO L85 PathProgramCache]: Analyzing trace with hash -927437010, now seen corresponding path program 1 times [2021-11-07 00:53:32,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 00:53:32,351 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366735135] [2021-11-07 00:53:32,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:53:32,351 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 00:53:32,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:53:32,450 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:53:32,451 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 00:53:32,451 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366735135] [2021-11-07 00:53:32,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366735135] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 00:53:32,451 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:53:32,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 00:53:32,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250782540] [2021-11-07 00:53:32,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 00:53:32,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 00:53:32,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 00:53:32,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 00:53:32,453 INFO L87 Difference]: Start difference. First operand 784 states and 1019 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:32,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:53:32,748 INFO L93 Difference]: Finished difference Result 1780 states and 2334 transitions. [2021-11-07 00:53:32,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 00:53:32,748 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 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 [2021-11-07 00:53:32,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:53:32,753 INFO L225 Difference]: With dead ends: 1780 [2021-11-07 00:53:32,753 INFO L226 Difference]: Without dead ends: 997 [2021-11-07 00:53:32,754 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 00:53:32,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2021-11-07 00:53:32,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 997. [2021-11-07 00:53:32,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 997 states, 996 states have (on average 1.2730923694779117) internal successors, (1268), 996 states have internal predecessors, (1268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:32,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1268 transitions. [2021-11-07 00:53:32,784 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1268 transitions. Word has length 155 [2021-11-07 00:53:32,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:53:32,784 INFO L470 AbstractCegarLoop]: Abstraction has 997 states and 1268 transitions. [2021-11-07 00:53:32,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:32,785 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1268 transitions. [2021-11-07 00:53:32,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-11-07 00:53:32,788 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:53:32,788 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-07 00:53:32,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 00:53:32,789 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 00:53:32,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:53:32,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1653686198, now seen corresponding path program 1 times [2021-11-07 00:53:32,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 00:53:32,790 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243124178] [2021-11-07 00:53:32,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:53:32,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 00:53:32,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:53:32,885 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-07 00:53:32,885 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 00:53:32,885 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243124178] [2021-11-07 00:53:32,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243124178] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 00:53:32,886 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:53:32,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 00:53:32,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651182838] [2021-11-07 00:53:32,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 00:53:32,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 00:53:32,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 00:53:32,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 00:53:32,888 INFO L87 Difference]: Start difference. First operand 997 states and 1268 transitions. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:33,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:53:33,378 INFO L93 Difference]: Finished difference Result 1993 states and 2535 transitions. [2021-11-07 00:53:33,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 00:53:33,378 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 158 [2021-11-07 00:53:33,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:53:33,384 INFO L225 Difference]: With dead ends: 1993 [2021-11-07 00:53:33,384 INFO L226 Difference]: Without dead ends: 997 [2021-11-07 00:53:33,386 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 00:53:33,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2021-11-07 00:53:33,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 997. [2021-11-07 00:53:33,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 997 states, 996 states have (on average 1.2188755020080322) internal successors, (1214), 996 states have internal predecessors, (1214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:33,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1214 transitions. [2021-11-07 00:53:33,413 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1214 transitions. Word has length 158 [2021-11-07 00:53:33,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:53:33,414 INFO L470 AbstractCegarLoop]: Abstraction has 997 states and 1214 transitions. [2021-11-07 00:53:33,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:33,414 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1214 transitions. [2021-11-07 00:53:33,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-11-07 00:53:33,417 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:53:33,417 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:53:33,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-07 00:53:33,418 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 00:53:33,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:53:33,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1252271355, now seen corresponding path program 1 times [2021-11-07 00:53:33,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 00:53:33,419 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096040914] [2021-11-07 00:53:33,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:53:33,419 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 00:53:33,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:53:33,578 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 104 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:53:33,579 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 00:53:33,579 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096040914] [2021-11-07 00:53:33,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096040914] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 00:53:33,580 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100528450] [2021-11-07 00:53:33,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:53:33,584 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 00:53:33,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3165e49a-84a9-44e3-bf87-1406e187ec38/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 00:53:33,593 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3165e49a-84a9-44e3-bf87-1406e187ec38/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 00:53:33,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3165e49a-84a9-44e3-bf87-1406e187ec38/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 00:53:33,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:53:33,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 00:53:33,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:53:34,361 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2021-11-07 00:53:34,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:53:34,850 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2021-11-07 00:53:34,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100528450] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:53:34,854 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-11-07 00:53:34,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [4] total 5 [2021-11-07 00:53:34,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484095796] [2021-11-07 00:53:34,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 00:53:34,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 00:53:34,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 00:53:34,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 00:53:34,858 INFO L87 Difference]: Start difference. First operand 997 states and 1214 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 2 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:35,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:53:35,120 INFO L93 Difference]: Finished difference Result 1212 states and 1464 transitions. [2021-11-07 00:53:35,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 00:53:35,121 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 2 states have internal predecessors, (74), 0 states have call successors, (0), 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 177 [2021-11-07 00:53:35,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:53:35,128 INFO L225 Difference]: With dead ends: 1212 [2021-11-07 00:53:35,128 INFO L226 Difference]: Without dead ends: 1210 [2021-11-07 00:53:35,130 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 352 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 00:53:35,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2021-11-07 00:53:35,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 997. [2021-11-07 00:53:35,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 997 states, 996 states have (on average 1.2178714859437751) internal successors, (1213), 996 states have internal predecessors, (1213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:35,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1213 transitions. [2021-11-07 00:53:35,158 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1213 transitions. Word has length 177 [2021-11-07 00:53:35,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:53:35,159 INFO L470 AbstractCegarLoop]: Abstraction has 997 states and 1213 transitions. [2021-11-07 00:53:35,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 2 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:35,159 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1213 transitions. [2021-11-07 00:53:35,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2021-11-07 00:53:35,164 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:53:35,164 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:53:35,205 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3165e49a-84a9-44e3-bf87-1406e187ec38/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-07 00:53:35,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3165e49a-84a9-44e3-bf87-1406e187ec38/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 00:53:35,381 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 00:53:35,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:53:35,381 INFO L85 PathProgramCache]: Analyzing trace with hash 460277784, now seen corresponding path program 1 times [2021-11-07 00:53:35,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 00:53:35,382 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208077378] [2021-11-07 00:53:35,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:53:35,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 00:53:35,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:53:35,679 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 270 proven. 114 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-07 00:53:35,679 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 00:53:35,680 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208077378] [2021-11-07 00:53:35,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208077378] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 00:53:35,680 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148172298] [2021-11-07 00:53:35,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:53:35,680 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 00:53:35,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3165e49a-84a9-44e3-bf87-1406e187ec38/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 00:53:35,681 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3165e49a-84a9-44e3-bf87-1406e187ec38/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 00:53:35,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3165e49a-84a9-44e3-bf87-1406e187ec38/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 00:53:35,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:53:35,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 00:53:35,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:53:36,605 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 250 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2021-11-07 00:53:36,606 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:53:37,186 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 250 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2021-11-07 00:53:37,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [148172298] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:53:37,186 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-11-07 00:53:37,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 7 [2021-11-07 00:53:37,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944458801] [2021-11-07 00:53:37,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 00:53:37,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 00:53:37,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 00:53:37,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 00:53:37,210 INFO L87 Difference]: Start difference. First operand 997 states and 1213 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:37,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:53:37,507 INFO L93 Difference]: Finished difference Result 2204 states and 2673 transitions. [2021-11-07 00:53:37,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 00:53:37,508 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 265 [2021-11-07 00:53:37,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:53:37,508 INFO L225 Difference]: With dead ends: 2204 [2021-11-07 00:53:37,509 INFO L226 Difference]: Without dead ends: 0 [2021-11-07 00:53:37,511 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 534 GetRequests, 528 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 00:53:37,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-07 00:53:37,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-07 00:53:37,511 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) [2021-11-07 00:53:37,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-07 00:53:37,512 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 265 [2021-11-07 00:53:37,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:53:37,512 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-07 00:53:37,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:53:37,512 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-07 00:53:37,512 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-07 00:53:37,515 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 00:53:37,551 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3165e49a-84a9-44e3-bf87-1406e187ec38/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-07 00:53:37,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3165e49a-84a9-44e3-bf87-1406e187ec38/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-07 00:53:37,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-07 00:53:37,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:53:37,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:53:37,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:53:37,978 INFO L857 garLoopResultBuilder]: For program point L102(lines 102 400) no Hoare annotation was computed. [2021-11-07 00:53:37,978 INFO L857 garLoopResultBuilder]: For program point L598(line 598) no Hoare annotation was computed. [2021-11-07 00:53:37,979 INFO L857 garLoopResultBuilder]: For program point L334(lines 334 400) no Hoare annotation was computed. [2021-11-07 00:53:37,979 INFO L857 garLoopResultBuilder]: For program point L302(lines 302 400) no Hoare annotation was computed. [2021-11-07 00:53:37,979 INFO L857 garLoopResultBuilder]: For program point L170(lines 170 400) no Hoare annotation was computed. [2021-11-07 00:53:37,979 INFO L857 garLoopResultBuilder]: For program point L204(lines 204 400) no Hoare annotation was computed. [2021-11-07 00:53:37,979 INFO L857 garLoopResultBuilder]: For program point L72(lines 72 400) no Hoare annotation was computed. [2021-11-07 00:53:37,979 INFO L857 garLoopResultBuilder]: For program point L271(lines 271 400) no Hoare annotation was computed. [2021-11-07 00:53:37,979 INFO L857 garLoopResultBuilder]: For program point L139(lines 139 400) no Hoare annotation was computed. [2021-11-07 00:53:37,979 INFO L857 garLoopResultBuilder]: For program point L503-1(lines 40 585) no Hoare annotation was computed. [2021-11-07 00:53:37,979 INFO L857 garLoopResultBuilder]: For program point L371(lines 371 400) no Hoare annotation was computed. [2021-11-07 00:53:37,980 INFO L857 garLoopResultBuilder]: For program point L107(lines 107 400) no Hoare annotation was computed. [2021-11-07 00:53:37,980 INFO L857 garLoopResultBuilder]: For program point L41(lines 41 400) no Hoare annotation was computed. [2021-11-07 00:53:37,980 INFO L857 garLoopResultBuilder]: For program point L339(lines 339 400) no Hoare annotation was computed. [2021-11-07 00:53:37,980 INFO L857 garLoopResultBuilder]: For program point L207(lines 207 400) no Hoare annotation was computed. [2021-11-07 00:53:37,980 INFO L857 garLoopResultBuilder]: For program point L75(lines 75 400) no Hoare annotation was computed. [2021-11-07 00:53:37,980 INFO L857 garLoopResultBuilder]: For program point L373(lines 373 400) no Hoare annotation was computed. [2021-11-07 00:53:37,980 INFO L857 garLoopResultBuilder]: For program point L241(lines 241 400) no Hoare annotation was computed. [2021-11-07 00:53:37,980 INFO L857 garLoopResultBuilder]: For program point L175(lines 175 400) no Hoare annotation was computed. [2021-11-07 00:53:37,980 INFO L857 garLoopResultBuilder]: For program point L506-1(lines 40 585) no Hoare annotation was computed. [2021-11-07 00:53:37,981 INFO L857 garLoopResultBuilder]: For program point L275(lines 275 400) no Hoare annotation was computed. [2021-11-07 00:53:37,981 INFO L857 garLoopResultBuilder]: For program point L507(line 507) no Hoare annotation was computed. [2021-11-07 00:53:37,981 INFO L857 garLoopResultBuilder]: For program point L375(lines 375 400) no Hoare annotation was computed. [2021-11-07 00:53:37,982 INFO L857 garLoopResultBuilder]: For program point L309(lines 309 400) no Hoare annotation was computed. [2021-11-07 00:53:37,982 INFO L857 garLoopResultBuilder]: For program point L45(lines 45 400) no Hoare annotation was computed. [2021-11-07 00:53:37,982 INFO L857 garLoopResultBuilder]: For program point L343(lines 343 400) no Hoare annotation was computed. [2021-11-07 00:53:37,982 INFO L857 garLoopResultBuilder]: For program point L112(lines 112 400) no Hoare annotation was computed. [2021-11-07 00:53:37,982 INFO L857 garLoopResultBuilder]: For program point L278(lines 278 400) no Hoare annotation was computed. [2021-11-07 00:53:37,982 INFO L857 garLoopResultBuilder]: For program point L146(lines 146 400) no Hoare annotation was computed. [2021-11-07 00:53:37,982 INFO L857 garLoopResultBuilder]: For program point L213(lines 213 400) no Hoare annotation was computed. [2021-11-07 00:53:37,983 INFO L857 garLoopResultBuilder]: For program point L82(lines 82 400) no Hoare annotation was computed. [2021-11-07 00:53:37,983 INFO L857 garLoopResultBuilder]: For program point L347(lines 347 400) no Hoare annotation was computed. [2021-11-07 00:53:37,983 INFO L857 garLoopResultBuilder]: For program point L248(lines 248 400) no Hoare annotation was computed. [2021-11-07 00:53:37,983 INFO L857 garLoopResultBuilder]: For program point L183(lines 183 400) no Hoare annotation was computed. [2021-11-07 00:53:37,983 INFO L857 garLoopResultBuilder]: For program point L150(lines 150 400) no Hoare annotation was computed. [2021-11-07 00:53:37,983 INFO L857 garLoopResultBuilder]: For program point L382(lines 382 400) no Hoare annotation was computed. [2021-11-07 00:53:37,984 INFO L857 garLoopResultBuilder]: For program point L316(lines 316 400) no Hoare annotation was computed. [2021-11-07 00:53:37,984 INFO L857 garLoopResultBuilder]: For program point L283(lines 283 400) no Hoare annotation was computed. [2021-11-07 00:53:37,984 INFO L857 garLoopResultBuilder]: For program point L118(lines 118 400) no Hoare annotation was computed. [2021-11-07 00:53:37,984 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-07 00:53:37,984 INFO L857 garLoopResultBuilder]: For program point L218(lines 218 400) no Hoare annotation was computed. [2021-11-07 00:53:37,984 INFO L857 garLoopResultBuilder]: For program point L53(lines 53 400) no Hoare annotation was computed. [2021-11-07 00:53:37,985 INFO L857 garLoopResultBuilder]: For program point L154(lines 154 400) no Hoare annotation was computed. [2021-11-07 00:53:37,985 INFO L853 garLoopResultBuilder]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse2 (<= 15 ~a8~0)) (.cse3 (= ~a17~0 0)) (.cse5 (<= ~a8~0 13)) (.cse0 (= ~a21~0 1)) (.cse1 (= ~a17~0 1)) (.cse4 (<= ~a16~0 5)) (.cse6 (= ~a20~0 1))) (or (and .cse0 .cse1 .cse2) (and .cse0 .cse2 .cse3) (and .cse0 .cse4 .cse3) (and .cse5 .cse1 .cse4) (and .cse5 .cse3) (and .cse5 .cse0 .cse1 .cse6) (and .cse0 .cse1 .cse4 .cse6))) [2021-11-07 00:53:37,985 INFO L857 garLoopResultBuilder]: For program point L188(lines 188 400) no Hoare annotation was computed. [2021-11-07 00:53:37,985 INFO L857 garLoopResultBuilder]: For program point L387(lines 387 400) no Hoare annotation was computed. [2021-11-07 00:53:37,986 INFO L857 garLoopResultBuilder]: For program point L288(lines 288 400) no Hoare annotation was computed. [2021-11-07 00:53:37,986 INFO L857 garLoopResultBuilder]: For program point L255(lines 255 400) no Hoare annotation was computed. [2021-11-07 00:53:37,986 INFO L857 garLoopResultBuilder]: For program point L90(lines 90 400) no Hoare annotation was computed. [2021-11-07 00:53:37,986 INFO L857 garLoopResultBuilder]: For program point L355(lines 355 400) no Hoare annotation was computed. [2021-11-07 00:53:37,986 INFO L857 garLoopResultBuilder]: For program point L322(lines 322 400) no Hoare annotation was computed. [2021-11-07 00:53:37,986 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-07 00:53:37,986 INFO L857 garLoopResultBuilder]: For program point L124(lines 124 400) no Hoare annotation was computed. [2021-11-07 00:53:37,987 INFO L860 garLoopResultBuilder]: At program point L587(lines 587 604) the Hoare annotation is: true [2021-11-07 00:53:37,987 INFO L857 garLoopResultBuilder]: For program point L224(lines 224 400) no Hoare annotation was computed. [2021-11-07 00:53:37,987 INFO L857 garLoopResultBuilder]: For program point L158(lines 158 400) no Hoare annotation was computed. [2021-11-07 00:53:37,987 INFO L857 garLoopResultBuilder]: For program point L59(lines 59 400) no Hoare annotation was computed. [2021-11-07 00:53:37,987 INFO L857 garLoopResultBuilder]: For program point L94(lines 94 400) no Hoare annotation was computed. [2021-11-07 00:53:37,987 INFO L857 garLoopResultBuilder]: For program point L392(lines 392 400) no Hoare annotation was computed. [2021-11-07 00:53:37,988 INFO L857 garLoopResultBuilder]: For program point L326(lines 326 400) no Hoare annotation was computed. [2021-11-07 00:53:37,988 INFO L857 garLoopResultBuilder]: For program point L260(lines 260 400) no Hoare annotation was computed. [2021-11-07 00:53:37,988 INFO L857 garLoopResultBuilder]: For program point L228(lines 228 400) no Hoare annotation was computed. [2021-11-07 00:53:37,988 INFO L857 garLoopResultBuilder]: For program point L162(lines 162 400) no Hoare annotation was computed. [2021-11-07 00:53:37,988 INFO L857 garLoopResultBuilder]: For program point L129(lines 129 400) no Hoare annotation was computed. [2021-11-07 00:53:37,988 INFO L857 garLoopResultBuilder]: For program point L328(lines 328 400) no Hoare annotation was computed. [2021-11-07 00:53:37,989 INFO L857 garLoopResultBuilder]: For program point L196(lines 196 400) no Hoare annotation was computed. [2021-11-07 00:53:37,989 INFO L857 garLoopResultBuilder]: For program point L64(lines 64 400) no Hoare annotation was computed. [2021-11-07 00:53:37,989 INFO L853 garLoopResultBuilder]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse2 (<= 15 ~a8~0)) (.cse3 (= ~a17~0 0)) (.cse5 (<= ~a8~0 13)) (.cse0 (= ~a21~0 1)) (.cse1 (= ~a17~0 1)) (.cse4 (<= ~a16~0 5)) (.cse6 (= ~a20~0 1))) (or (and .cse0 .cse1 .cse2) (and .cse0 .cse2 .cse3) (and .cse0 .cse4 .cse3) (and .cse5 .cse1 .cse4) (and .cse5 .cse3) (and .cse5 .cse0 .cse1 .cse6) (and .cse0 .cse1 .cse4 .cse6))) [2021-11-07 00:53:37,989 INFO L857 garLoopResultBuilder]: For program point L296(lines 296 400) no Hoare annotation was computed. [2021-11-07 00:53:37,989 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 507) no Hoare annotation was computed. [2021-11-07 00:53:37,990 INFO L857 garLoopResultBuilder]: For program point L363(lines 363 400) no Hoare annotation was computed. [2021-11-07 00:53:37,990 INFO L857 garLoopResultBuilder]: For program point L199(lines 199 400) no Hoare annotation was computed. [2021-11-07 00:53:37,990 INFO L857 garLoopResultBuilder]: For program point L365(lines 365 400) no Hoare annotation was computed. [2021-11-07 00:53:37,990 INFO L857 garLoopResultBuilder]: For program point L266(lines 266 400) no Hoare annotation was computed. [2021-11-07 00:53:37,990 INFO L857 garLoopResultBuilder]: For program point L233(lines 233 400) no Hoare annotation was computed. [2021-11-07 00:53:37,990 INFO L857 garLoopResultBuilder]: For program point L134(lines 134 400) no Hoare annotation was computed. [2021-11-07 00:53:37,994 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:53:37,995 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 00:53:38,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:53:38 BoogieIcfgContainer [2021-11-07 00:53:38,012 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 00:53:38,012 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 00:53:38,013 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 00:53:38,013 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 00:53:38,013 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:53:28" (3/4) ... [2021-11-07 00:53:38,016 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-07 00:53:38,038 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 108 nodes and edges [2021-11-07 00:53:38,039 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2021-11-07 00:53:38,041 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-11-07 00:53:38,043 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-07 00:53:38,159 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3165e49a-84a9-44e3-bf87-1406e187ec38/bin/utaipan-UUZaoUuFF8/witness.graphml [2021-11-07 00:53:38,160 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 00:53:38,161 INFO L168 Benchmark]: Toolchain (without parser) took 12181.60 ms. Allocated memory was 102.8 MB in the beginning and 218.1 MB in the end (delta: 115.3 MB). Free memory was 68.3 MB in the beginning and 113.8 MB in the end (delta: -45.5 MB). Peak memory consumption was 70.4 MB. Max. memory is 16.1 GB. [2021-11-07 00:53:38,162 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 102.8 MB. Free memory is still 56.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 00:53:38,162 INFO L168 Benchmark]: CACSL2BoogieTranslator took 604.15 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 68.3 MB in the beginning and 81.2 MB in the end (delta: -12.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-07 00:53:38,162 INFO L168 Benchmark]: Boogie Procedure Inliner took 73.67 ms. Allocated memory is still 123.7 MB. Free memory was 81.2 MB in the beginning and 75.5 MB in the end (delta: 5.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-11-07 00:53:38,163 INFO L168 Benchmark]: Boogie Preprocessor took 69.09 ms. Allocated memory is still 123.7 MB. Free memory was 75.5 MB in the beginning and 71.3 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-11-07 00:53:38,163 INFO L168 Benchmark]: RCFGBuilder took 1825.96 ms. Allocated memory is still 123.7 MB. Free memory was 71.3 MB in the beginning and 57.1 MB in the end (delta: 14.2 MB). Peak memory consumption was 43.1 MB. Max. memory is 16.1 GB. [2021-11-07 00:53:38,164 INFO L168 Benchmark]: TraceAbstraction took 9454.05 ms. Allocated memory was 123.7 MB in the beginning and 218.1 MB in the end (delta: 94.4 MB). Free memory was 57.1 MB in the beginning and 129.7 MB in the end (delta: -72.7 MB). Peak memory consumption was 21.4 MB. Max. memory is 16.1 GB. [2021-11-07 00:53:38,164 INFO L168 Benchmark]: Witness Printer took 147.23 ms. Allocated memory is still 218.1 MB. Free memory was 129.7 MB in the beginning and 113.8 MB in the end (delta: 15.9 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-11-07 00:53:38,166 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 102.8 MB. Free memory is still 56.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 604.15 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 68.3 MB in the beginning and 81.2 MB in the end (delta: -12.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 73.67 ms. Allocated memory is still 123.7 MB. Free memory was 81.2 MB in the beginning and 75.5 MB in the end (delta: 5.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 69.09 ms. Allocated memory is still 123.7 MB. Free memory was 75.5 MB in the beginning and 71.3 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1825.96 ms. Allocated memory is still 123.7 MB. Free memory was 71.3 MB in the beginning and 57.1 MB in the end (delta: 14.2 MB). Peak memory consumption was 43.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9454.05 ms. Allocated memory was 123.7 MB in the beginning and 218.1 MB in the end (delta: 94.4 MB). Free memory was 57.1 MB in the beginning and 129.7 MB in the end (delta: -72.7 MB). Peak memory consumption was 21.4 MB. Max. memory is 16.1 GB. * Witness Printer took 147.23 ms. Allocated memory is still 218.1 MB. Free memory was 129.7 MB in the beginning and 113.8 MB in the end (delta: 15.9 MB). Peak memory consumption was 16.8 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, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 507]: 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, 76 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 9.3s, OverallIterations: 10, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 610 SDtfs, 647 SDslu, 42 SDs, 0 SdLazy, 2410 SolverSat, 709 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 911 GetRequests, 891 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=997occurred in iteration=5, InterpolantAutomatonStates: 32, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 497 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 39 NumberOfFragments, 149 HoareAnnotationTreeSize, 3 FomulaSimplifications, 756 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 282 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 1715 NumberOfCodeBlocks, 1715 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 2143 ConstructedInterpolants, 0 QuantifiedInterpolants, 7260 SizeOfPredicates, 0 NumberOfNonLiveVariables, 897 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 14 InterpolantComputations, 12 PerfectInterpolantSequences, 1881/2042 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: 593]: Loop Invariant Derived loop invariant: (((((((a21 == 1 && a17 == 1) && 15 <= a8) || ((a21 == 1 && 15 <= a8) && a17 == 0)) || ((a21 == 1 && a16 <= 5) && a17 == 0)) || ((a8 <= 13 && a17 == 1) && a16 <= 5)) || (a8 <= 13 && a17 == 0)) || (((a8 <= 13 && a21 == 1) && a17 == 1) && a20 == 1)) || (((a21 == 1 && a17 == 1) && a16 <= 5) && a20 == 1) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: (((((((a21 == 1 && a17 == 1) && 15 <= a8) || ((a21 == 1 && 15 <= a8) && a17 == 0)) || ((a21 == 1 && a16 <= 5) && a17 == 0)) || ((a8 <= 13 && a17 == 1) && a16 <= 5)) || (a8 <= 13 && a17 == 0)) || (((a8 <= 13 && a21 == 1) && a17 == 1) && a20 == 1)) || (((a21 == 1 && a17 == 1) && a16 <= 5) && a20 == 1) RESULT: Ultimate proved your program to be correct! [2021-11-07 00:53:38,217 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3165e49a-84a9-44e3-bf87-1406e187ec38/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE