./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label01.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d0e477e-772e-49fb-a7ad-e64d3ea136f1/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d0e477e-772e-49fb-a7ad-e64d3ea136f1/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d0e477e-772e-49fb-a7ad-e64d3ea136f1/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d0e477e-772e-49fb-a7ad-e64d3ea136f1/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label01.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d0e477e-772e-49fb-a7ad-e64d3ea136f1/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d0e477e-772e-49fb-a7ad-e64d3ea136f1/bin/utaipan-SDwSMHVbGG --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 f974ef5ae084ca735facbee0c59fc65e3f1da96ae509150f8b1cec197fdee20c ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 06:00:54,525 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 06:00:54,527 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 06:00:54,572 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 06:00:54,573 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 06:00:54,574 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 06:00:54,576 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 06:00:54,579 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 06:00:54,582 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 06:00:54,583 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 06:00:54,585 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 06:00:54,587 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 06:00:54,587 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 06:00:54,589 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 06:00:54,591 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 06:00:54,593 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 06:00:54,594 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 06:00:54,595 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 06:00:54,598 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 06:00:54,601 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 06:00:54,604 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 06:00:54,605 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 06:00:54,607 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 06:00:54,609 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 06:00:54,613 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 06:00:54,614 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 06:00:54,615 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 06:00:54,616 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 06:00:54,617 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 06:00:54,618 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 06:00:54,619 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 06:00:54,620 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 06:00:54,621 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 06:00:54,622 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 06:00:54,623 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 06:00:54,624 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 06:00:54,625 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 06:00:54,625 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 06:00:54,625 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 06:00:54,626 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 06:00:54,627 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 06:00:54,629 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d0e477e-772e-49fb-a7ad-e64d3ea136f1/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-29 06:00:54,676 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 06:00:54,677 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 06:00:54,678 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 06:00:54,678 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 06:00:54,678 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 06:00:54,678 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 06:00:54,679 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 06:00:54,679 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 06:00:54,679 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 06:00:54,679 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 06:00:54,679 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 06:00:54,680 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 06:00:54,687 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 06:00:54,687 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 06:00:54,687 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 06:00:54,688 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 06:00:54,688 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 06:00:54,689 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 06:00:54,689 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 06:00:54,689 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 06:00:54,689 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 06:00:54,689 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 06:00:54,690 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 06:00:54,690 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 06:00:54,691 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 06:00:54,691 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 06:00:54,691 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 06:00:54,691 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 06:00:54,692 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 06:00:54,692 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 06:00:54,693 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 06:00:54,693 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 06:00:54,693 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 06:00:54,694 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 06:00:54,694 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 06:00:54,694 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 06:00:54,695 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 06:00:54,695 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 06:00:54,696 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 06:00:54,696 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_7d0e477e-772e-49fb-a7ad-e64d3ea136f1/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d0e477e-772e-49fb-a7ad-e64d3ea136f1/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f974ef5ae084ca735facbee0c59fc65e3f1da96ae509150f8b1cec197fdee20c [2021-10-29 06:00:54,985 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 06:00:55,010 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 06:00:55,013 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 06:00:55,014 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 06:00:55,015 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 06:00:55,016 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d0e477e-772e-49fb-a7ad-e64d3ea136f1/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/eca-rers2012/Problem01_label01.c [2021-10-29 06:00:55,140 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d0e477e-772e-49fb-a7ad-e64d3ea136f1/bin/utaipan-SDwSMHVbGG/data/68d3c2d6f/442a8b6cb0e14903a13ec0f057f5917b/FLAGd6e66655c [2021-10-29 06:00:55,761 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 06:00:55,762 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d0e477e-772e-49fb-a7ad-e64d3ea136f1/sv-benchmarks/c/eca-rers2012/Problem01_label01.c [2021-10-29 06:00:55,782 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d0e477e-772e-49fb-a7ad-e64d3ea136f1/bin/utaipan-SDwSMHVbGG/data/68d3c2d6f/442a8b6cb0e14903a13ec0f057f5917b/FLAGd6e66655c [2021-10-29 06:00:55,988 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d0e477e-772e-49fb-a7ad-e64d3ea136f1/bin/utaipan-SDwSMHVbGG/data/68d3c2d6f/442a8b6cb0e14903a13ec0f057f5917b [2021-10-29 06:00:55,991 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 06:00:55,992 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 06:00:56,004 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 06:00:56,005 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 06:00:56,008 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 06:00:56,009 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 06:00:55" (1/1) ... [2021-10-29 06:00:56,010 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@439efd64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:00:56, skipping insertion in model container [2021-10-29 06:00:56,010 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 06:00:55" (1/1) ... [2021-10-29 06:00:56,021 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 06:00:56,078 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 06:00:56,513 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_7d0e477e-772e-49fb-a7ad-e64d3ea136f1/sv-benchmarks/c/eca-rers2012/Problem01_label01.c[16869,16882] [2021-10-29 06:00:56,561 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 06:00:56,570 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 06:00:56,703 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_7d0e477e-772e-49fb-a7ad-e64d3ea136f1/sv-benchmarks/c/eca-rers2012/Problem01_label01.c[16869,16882] [2021-10-29 06:00:56,723 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 06:00:56,744 INFO L208 MainTranslator]: Completed translation [2021-10-29 06:00:56,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:00:56 WrapperNode [2021-10-29 06:00:56,744 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 06:00:56,745 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 06:00:56,745 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 06:00:56,745 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 06:00:56,752 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:00:56" (1/1) ... [2021-10-29 06:00:56,776 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:00:56" (1/1) ... [2021-10-29 06:00:56,858 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 06:00:56,859 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 06:00:56,859 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 06:00:56,859 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 06:00:56,876 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:00:56" (1/1) ... [2021-10-29 06:00:56,876 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:00:56" (1/1) ... [2021-10-29 06:00:56,888 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:00:56" (1/1) ... [2021-10-29 06:00:56,889 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:00:56" (1/1) ... [2021-10-29 06:00:56,934 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:00:56" (1/1) ... [2021-10-29 06:00:56,950 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:00:56" (1/1) ... [2021-10-29 06:00:56,955 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:00:56" (1/1) ... [2021-10-29 06:00:56,963 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 06:00:56,964 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 06:00:56,964 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 06:00:56,965 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 06:00:56,966 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:00:56" (1/1) ... [2021-10-29 06:00:56,974 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 06:00:56,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d0e477e-772e-49fb-a7ad-e64d3ea136f1/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 06:00:57,003 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d0e477e-772e-49fb-a7ad-e64d3ea136f1/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 06:00:57,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d0e477e-772e-49fb-a7ad-e64d3ea136f1/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 06:00:57,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 06:00:57,055 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 06:00:57,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 06:00:57,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 06:00:59,057 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 06:00:59,057 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-29 06:00:59,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 06:00:59 BoogieIcfgContainer [2021-10-29 06:00:59,060 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 06:00:59,063 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 06:00:59,063 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 06:00:59,067 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 06:00:59,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 06:00:55" (1/3) ... [2021-10-29 06:00:59,069 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55b27d11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 06:00:59, skipping insertion in model container [2021-10-29 06:00:59,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:00:56" (2/3) ... [2021-10-29 06:00:59,069 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55b27d11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 06:00:59, skipping insertion in model container [2021-10-29 06:00:59,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 06:00:59" (3/3) ... [2021-10-29 06:00:59,072 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label01.c [2021-10-29 06:00:59,081 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 06:00:59,081 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-29 06:00:59,154 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 06:00:59,163 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 [2021-10-29 06:00:59,163 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-29 06:00:59,184 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) [2021-10-29 06:00:59,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-10-29 06:00:59,197 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:00:59,198 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] [2021-10-29 06:00:59,199 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 06:00:59,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:00:59,216 INFO L85 PathProgramCache]: Analyzing trace with hash 379011006, now seen corresponding path program 1 times [2021-10-29 06:00:59,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 06:00:59,228 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620319700] [2021-10-29 06:00:59,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:00:59,229 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 06:00:59,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:00:59,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:00:59,676 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 06:00:59,677 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620319700] [2021-10-29 06:00:59,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620319700] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 06:00:59,678 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 06:00:59,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 06:00:59,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333669473] [2021-10-29 06:00:59,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 06:00:59,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 06:00:59,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 06:00:59,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 06:00:59,702 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) [2021-10-29 06:01:00,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:01:00,256 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2021-10-29 06:01:00,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 06:01:00,258 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 [2021-10-29 06:01:00,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:01:00,270 INFO L225 Difference]: With dead ends: 224 [2021-10-29 06:01:00,271 INFO L226 Difference]: Without dead ends: 145 [2021-10-29 06:01:00,274 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 [2021-10-29 06:01:00,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-10-29 06:01:00,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2021-10-29 06:01:00,342 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) [2021-10-29 06:01:00,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 271 transitions. [2021-10-29 06:01:00,346 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 271 transitions. Word has length 71 [2021-10-29 06:01:00,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:01:00,353 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 271 transitions. [2021-10-29 06:01:00,354 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) [2021-10-29 06:01:00,354 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 271 transitions. [2021-10-29 06:01:00,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-10-29 06:01:00,359 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:01:00,359 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] [2021-10-29 06:01:00,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-29 06:01:00,360 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 06:01:00,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:01:00,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1708118006, now seen corresponding path program 1 times [2021-10-29 06:01:00,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 06:01:00,370 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570973611] [2021-10-29 06:01:00,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:01:00,370 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 06:01:00,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:01:00,482 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:01:00,483 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 06:01:00,483 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570973611] [2021-10-29 06:01:00,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570973611] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 06:01:00,483 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 06:01:00,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 06:01:00,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943017316] [2021-10-29 06:01:00,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 06:01:00,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 06:01:00,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 06:01:00,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 06:01:00,489 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) [2021-10-29 06:01:00,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:01:00,885 INFO L93 Difference]: Finished difference Result 431 states and 810 transitions. [2021-10-29 06:01:00,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 06:01:00,886 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 [2021-10-29 06:01:00,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:01:00,891 INFO L225 Difference]: With dead ends: 431 [2021-10-29 06:01:00,891 INFO L226 Difference]: Without dead ends: 287 [2021-10-29 06:01:00,893 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 [2021-10-29 06:01:00,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-10-29 06:01:00,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2021-10-29 06:01:00,922 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) [2021-10-29 06:01:00,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 504 transitions. [2021-10-29 06:01:00,926 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 504 transitions. Word has length 76 [2021-10-29 06:01:00,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:01:00,926 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 504 transitions. [2021-10-29 06:01:00,926 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) [2021-10-29 06:01:00,927 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 504 transitions. [2021-10-29 06:01:00,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-10-29 06:01:00,932 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:01:00,932 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] [2021-10-29 06:01:00,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-29 06:01:00,933 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 06:01:00,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:01:00,934 INFO L85 PathProgramCache]: Analyzing trace with hash 714029725, now seen corresponding path program 1 times [2021-10-29 06:01:00,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 06:01:00,934 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319274961] [2021-10-29 06:01:00,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:01:00,935 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 06:01:00,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:01:01,024 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:01:01,026 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 06:01:01,026 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319274961] [2021-10-29 06:01:01,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319274961] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 06:01:01,027 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 06:01:01,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 06:01:01,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975090626] [2021-10-29 06:01:01,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 06:01:01,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 06:01:01,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 06:01:01,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 06:01:01,036 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) [2021-10-29 06:01:01,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:01:01,429 INFO L93 Difference]: Finished difference Result 786 states and 1371 transitions. [2021-10-29 06:01:01,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 06:01:01,430 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 [2021-10-29 06:01:01,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:01:01,435 INFO L225 Difference]: With dead ends: 786 [2021-10-29 06:01:01,435 INFO L226 Difference]: Without dead ends: 500 [2021-10-29 06:01:01,437 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 [2021-10-29 06:01:01,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2021-10-29 06:01:01,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 500. [2021-10-29 06:01:01,471 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) [2021-10-29 06:01:01,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 766 transitions. [2021-10-29 06:01:01,487 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 766 transitions. Word has length 86 [2021-10-29 06:01:01,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:01:01,487 INFO L470 AbstractCegarLoop]: Abstraction has 500 states and 766 transitions. [2021-10-29 06:01:01,488 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) [2021-10-29 06:01:01,488 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 766 transitions. [2021-10-29 06:01:01,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-10-29 06:01:01,494 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:01:01,495 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] [2021-10-29 06:01:01,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-29 06:01:01,495 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 06:01:01,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:01:01,496 INFO L85 PathProgramCache]: Analyzing trace with hash 763839021, now seen corresponding path program 1 times [2021-10-29 06:01:01,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 06:01:01,497 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487490326] [2021-10-29 06:01:01,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:01:01,497 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 06:01:01,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:01:01,580 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-29 06:01:01,580 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 06:01:01,580 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487490326] [2021-10-29 06:01:01,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487490326] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 06:01:01,581 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 06:01:01,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 06:01:01,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861408294] [2021-10-29 06:01:01,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 06:01:01,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 06:01:01,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 06:01:01,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 06:01:01,584 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) [2021-10-29 06:01:01,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:01:01,925 INFO L93 Difference]: Finished difference Result 1141 states and 1764 transitions. [2021-10-29 06:01:01,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 06:01:01,925 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 [2021-10-29 06:01:01,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:01:01,930 INFO L225 Difference]: With dead ends: 1141 [2021-10-29 06:01:01,930 INFO L226 Difference]: Without dead ends: 642 [2021-10-29 06:01:01,932 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 [2021-10-29 06:01:01,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2021-10-29 06:01:01,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 642. [2021-10-29 06:01:01,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 641 states have (on average 1.4648985959438376) internal successors, (939), 641 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:01,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 939 transitions. [2021-10-29 06:01:01,960 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 939 transitions. Word has length 87 [2021-10-29 06:01:01,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:01:01,960 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 939 transitions. [2021-10-29 06:01:01,961 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) [2021-10-29 06:01:01,961 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 939 transitions. [2021-10-29 06:01:01,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-10-29 06:01:01,965 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:01:01,965 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] [2021-10-29 06:01:01,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-29 06:01:01,966 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 06:01:01,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:01:01,966 INFO L85 PathProgramCache]: Analyzing trace with hash -2013622939, now seen corresponding path program 1 times [2021-10-29 06:01:01,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 06:01:01,967 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369423939] [2021-10-29 06:01:01,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:01:01,967 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 06:01:01,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:01:02,096 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:01:02,096 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 06:01:02,097 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369423939] [2021-10-29 06:01:02,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369423939] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 06:01:02,097 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 06:01:02,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 06:01:02,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133352063] [2021-10-29 06:01:02,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 06:01:02,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 06:01:02,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 06:01:02,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 06:01:02,100 INFO L87 Difference]: Start difference. First operand 642 states and 939 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) [2021-10-29 06:01:02,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:01:02,641 INFO L93 Difference]: Finished difference Result 1567 states and 2269 transitions. [2021-10-29 06:01:02,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 06:01:02,642 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 [2021-10-29 06:01:02,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:01:02,648 INFO L225 Difference]: With dead ends: 1567 [2021-10-29 06:01:02,648 INFO L226 Difference]: Without dead ends: 926 [2021-10-29 06:01:02,649 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 [2021-10-29 06:01:02,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2021-10-29 06:01:02,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 855. [2021-10-29 06:01:02,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 854 states have (on average 1.4262295081967213) internal successors, (1218), 854 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:02,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1218 transitions. [2021-10-29 06:01:02,684 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1218 transitions. Word has length 90 [2021-10-29 06:01:02,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:01:02,684 INFO L470 AbstractCegarLoop]: Abstraction has 855 states and 1218 transitions. [2021-10-29 06:01:02,685 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) [2021-10-29 06:01:02,685 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1218 transitions. [2021-10-29 06:01:02,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-10-29 06:01:02,687 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:01:02,687 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] [2021-10-29 06:01:02,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-29 06:01:02,688 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 06:01:02,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:01:02,689 INFO L85 PathProgramCache]: Analyzing trace with hash 683568038, now seen corresponding path program 1 times [2021-10-29 06:01:02,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 06:01:02,689 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215389827] [2021-10-29 06:01:02,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:01:02,690 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 06:01:02,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:01:02,804 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:01:02,805 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 06:01:02,805 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215389827] [2021-10-29 06:01:02,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215389827] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 06:01:02,805 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 06:01:02,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 06:01:02,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734181458] [2021-10-29 06:01:02,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 06:01:02,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 06:01:02,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 06:01:02,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 06:01:02,808 INFO L87 Difference]: Start difference. First operand 855 states and 1218 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) [2021-10-29 06:01:03,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:01:03,121 INFO L93 Difference]: Finished difference Result 999 states and 1409 transitions. [2021-10-29 06:01:03,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 06:01:03,122 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 [2021-10-29 06:01:03,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:01:03,131 INFO L225 Difference]: With dead ends: 999 [2021-10-29 06:01:03,131 INFO L226 Difference]: Without dead ends: 997 [2021-10-29 06:01:03,132 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 [2021-10-29 06:01:03,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2021-10-29 06:01:03,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 784. [2021-10-29 06:01:03,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 784 states, 783 states have (on average 1.4533844189016603) internal successors, (1138), 783 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:03,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1138 transitions. [2021-10-29 06:01:03,161 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1138 transitions. Word has length 108 [2021-10-29 06:01:03,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:01:03,161 INFO L470 AbstractCegarLoop]: Abstraction has 784 states and 1138 transitions. [2021-10-29 06:01:03,162 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) [2021-10-29 06:01:03,162 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1138 transitions. [2021-10-29 06:01:03,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-10-29 06:01:03,172 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:01:03,172 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 06:01:03,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-29 06:01:03,173 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 06:01:03,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:01:03,173 INFO L85 PathProgramCache]: Analyzing trace with hash 851744718, now seen corresponding path program 1 times [2021-10-29 06:01:03,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 06:01:03,178 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871707830] [2021-10-29 06:01:03,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:01:03,179 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 06:01:03,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:01:03,326 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-10-29 06:01:03,327 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 06:01:03,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871707830] [2021-10-29 06:01:03,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871707830] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 06:01:03,328 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 06:01:03,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 06:01:03,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869218203] [2021-10-29 06:01:03,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 06:01:03,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 06:01:03,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 06:01:03,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 06:01:03,330 INFO L87 Difference]: Start difference. First operand 784 states and 1138 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:03,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:01:03,936 INFO L93 Difference]: Finished difference Result 1780 states and 2584 transitions. [2021-10-29 06:01:03,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 06:01:03,937 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 163 [2021-10-29 06:01:03,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:01:03,944 INFO L225 Difference]: With dead ends: 1780 [2021-10-29 06:01:03,944 INFO L226 Difference]: Without dead ends: 997 [2021-10-29 06:01:03,945 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 [2021-10-29 06:01:03,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2021-10-29 06:01:03,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 926. [2021-10-29 06:01:03,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 926 states, 925 states have (on average 1.3578378378378377) internal successors, (1256), 925 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:03,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1256 transitions. [2021-10-29 06:01:03,975 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1256 transitions. Word has length 163 [2021-10-29 06:01:03,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:01:03,976 INFO L470 AbstractCegarLoop]: Abstraction has 926 states and 1256 transitions. [2021-10-29 06:01:03,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:03,976 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1256 transitions. [2021-10-29 06:01:03,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-10-29 06:01:03,980 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:01:03,980 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 06:01:03,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-29 06:01:03,981 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 06:01:03,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:01:03,981 INFO L85 PathProgramCache]: Analyzing trace with hash -280568081, now seen corresponding path program 1 times [2021-10-29 06:01:03,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 06:01:03,982 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627528359] [2021-10-29 06:01:03,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:01:03,982 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 06:01:04,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:01:04,084 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 138 proven. 11 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-10-29 06:01:04,084 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 06:01:04,084 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627528359] [2021-10-29 06:01:04,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627528359] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 06:01:04,085 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039227542] [2021-10-29 06:01:04,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:01:04,085 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 06:01:04,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d0e477e-772e-49fb-a7ad-e64d3ea136f1/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 06:01:04,087 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d0e477e-772e-49fb-a7ad-e64d3ea136f1/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 06:01:04,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d0e477e-772e-49fb-a7ad-e64d3ea136f1/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-29 06:01:04,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:01:04,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 06:01:04,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 06:01:04,938 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-10-29 06:01:04,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 06:01:05,479 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-10-29 06:01:05,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2039227542] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 06:01:05,480 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-29 06:01:05,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 5 [2021-10-29 06:01:05,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60261674] [2021-10-29 06:01:05,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 06:01:05,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 06:01:05,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 06:01:05,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-29 06:01:05,482 INFO L87 Difference]: Start difference. First operand 926 states and 1256 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:05,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:01:05,817 INFO L93 Difference]: Finished difference Result 1849 states and 2510 transitions. [2021-10-29 06:01:05,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 06:01:05,818 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 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 176 [2021-10-29 06:01:05,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:01:05,820 INFO L225 Difference]: With dead ends: 1849 [2021-10-29 06:01:05,820 INFO L226 Difference]: Without dead ends: 0 [2021-10-29 06:01:05,822 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 350 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-29 06:01:05,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-29 06:01:05,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-29 06:01:05,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:05,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-29 06:01:05,823 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 176 [2021-10-29 06:01:05,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:01:05,824 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-29 06:01:05,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 06:01:05,824 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-29 06:01:05,824 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-29 06:01:05,827 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 06:01:05,877 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d0e477e-772e-49fb-a7ad-e64d3ea136f1/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-29 06:01:06,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d0e477e-772e-49fb-a7ad-e64d3ea136f1/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-10-29 06:01:06,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-29 06:01:06,059 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:01:06,076 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:01:06,077 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 06:01:06,229 INFO L857 garLoopResultBuilder]: For program point L102(lines 102 400) no Hoare annotation was computed. [2021-10-29 06:01:06,230 INFO L857 garLoopResultBuilder]: For program point L598(line 598) no Hoare annotation was computed. [2021-10-29 06:01:06,230 INFO L857 garLoopResultBuilder]: For program point L334(lines 334 400) no Hoare annotation was computed. [2021-10-29 06:01:06,230 INFO L857 garLoopResultBuilder]: For program point L302(lines 302 400) no Hoare annotation was computed. [2021-10-29 06:01:06,230 INFO L857 garLoopResultBuilder]: For program point L170(lines 170 400) no Hoare annotation was computed. [2021-10-29 06:01:06,230 INFO L857 garLoopResultBuilder]: For program point L204(lines 204 400) no Hoare annotation was computed. [2021-10-29 06:01:06,231 INFO L857 garLoopResultBuilder]: For program point L72(lines 72 400) no Hoare annotation was computed. [2021-10-29 06:01:06,231 INFO L857 garLoopResultBuilder]: For program point L271(lines 271 400) no Hoare annotation was computed. [2021-10-29 06:01:06,231 INFO L857 garLoopResultBuilder]: For program point L139(lines 139 400) no Hoare annotation was computed. [2021-10-29 06:01:06,231 INFO L857 garLoopResultBuilder]: For program point L371(lines 371 400) no Hoare annotation was computed. [2021-10-29 06:01:06,232 INFO L857 garLoopResultBuilder]: For program point L107(lines 107 400) no Hoare annotation was computed. [2021-10-29 06:01:06,232 INFO L857 garLoopResultBuilder]: For program point L41(lines 41 400) no Hoare annotation was computed. [2021-10-29 06:01:06,232 INFO L857 garLoopResultBuilder]: For program point L339(lines 339 400) no Hoare annotation was computed. [2021-10-29 06:01:06,232 INFO L857 garLoopResultBuilder]: For program point L207(lines 207 400) no Hoare annotation was computed. [2021-10-29 06:01:06,232 INFO L857 garLoopResultBuilder]: For program point L75(lines 75 400) no Hoare annotation was computed. [2021-10-29 06:01:06,233 INFO L857 garLoopResultBuilder]: For program point L373(lines 373 400) no Hoare annotation was computed. [2021-10-29 06:01:06,233 INFO L857 garLoopResultBuilder]: For program point L241(lines 241 400) no Hoare annotation was computed. [2021-10-29 06:01:06,233 INFO L857 garLoopResultBuilder]: For program point L175(lines 175 400) no Hoare annotation was computed. [2021-10-29 06:01:06,233 INFO L857 garLoopResultBuilder]: For program point L275(lines 275 400) no Hoare annotation was computed. [2021-10-29 06:01:06,233 INFO L857 garLoopResultBuilder]: For program point L375(lines 375 400) no Hoare annotation was computed. [2021-10-29 06:01:06,234 INFO L857 garLoopResultBuilder]: For program point L309(lines 309 400) no Hoare annotation was computed. [2021-10-29 06:01:06,234 INFO L857 garLoopResultBuilder]: For program point L45(lines 45 400) no Hoare annotation was computed. [2021-10-29 06:01:06,234 INFO L857 garLoopResultBuilder]: For program point L343(lines 343 400) no Hoare annotation was computed. [2021-10-29 06:01:06,234 INFO L857 garLoopResultBuilder]: For program point L112(lines 112 400) no Hoare annotation was computed. [2021-10-29 06:01:06,234 INFO L857 garLoopResultBuilder]: For program point L278(lines 278 400) no Hoare annotation was computed. [2021-10-29 06:01:06,235 INFO L857 garLoopResultBuilder]: For program point L146(lines 146 400) no Hoare annotation was computed. [2021-10-29 06:01:06,235 INFO L857 garLoopResultBuilder]: For program point L213(lines 213 400) no Hoare annotation was computed. [2021-10-29 06:01:06,235 INFO L857 garLoopResultBuilder]: For program point L82(lines 82 400) no Hoare annotation was computed. [2021-10-29 06:01:06,235 INFO L857 garLoopResultBuilder]: For program point L347(lines 347 400) no Hoare annotation was computed. [2021-10-29 06:01:06,235 INFO L857 garLoopResultBuilder]: For program point L248(lines 248 400) no Hoare annotation was computed. [2021-10-29 06:01:06,236 INFO L857 garLoopResultBuilder]: For program point L183(lines 183 400) no Hoare annotation was computed. [2021-10-29 06:01:06,236 INFO L857 garLoopResultBuilder]: For program point L150(lines 150 400) no Hoare annotation was computed. [2021-10-29 06:01:06,236 INFO L857 garLoopResultBuilder]: For program point L382(lines 382 400) no Hoare annotation was computed. [2021-10-29 06:01:06,236 INFO L857 garLoopResultBuilder]: For program point L316(lines 316 400) no Hoare annotation was computed. [2021-10-29 06:01:06,236 INFO L857 garLoopResultBuilder]: For program point L283(lines 283 400) no Hoare annotation was computed. [2021-10-29 06:01:06,237 INFO L857 garLoopResultBuilder]: For program point L118(lines 118 400) no Hoare annotation was computed. [2021-10-29 06:01:06,237 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-29 06:01:06,237 INFO L857 garLoopResultBuilder]: For program point L218(lines 218 400) no Hoare annotation was computed. [2021-10-29 06:01:06,237 INFO L857 garLoopResultBuilder]: For program point L53(lines 53 400) no Hoare annotation was computed. [2021-10-29 06:01:06,237 INFO L857 garLoopResultBuilder]: For program point L154(lines 154 400) no Hoare annotation was computed. [2021-10-29 06:01:06,238 INFO L853 garLoopResultBuilder]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse0 (= ~a21~0 1)) (.cse2 (<= ~a21~0 0)) (.cse1 (<= ~a16~0 5))) (or (and .cse0 .cse1) (and .cse2 (= ~a20~0 1)) (and (not (= ~a7~0 1)) .cse0) (and .cse2 (= ~a17~0 1) .cse1))) [2021-10-29 06:01:06,238 INFO L857 garLoopResultBuilder]: For program point L188(lines 188 400) no Hoare annotation was computed. [2021-10-29 06:01:06,238 INFO L857 garLoopResultBuilder]: For program point L387(lines 387 400) no Hoare annotation was computed. [2021-10-29 06:01:06,239 INFO L857 garLoopResultBuilder]: For program point L288(lines 288 400) no Hoare annotation was computed. [2021-10-29 06:01:06,239 INFO L857 garLoopResultBuilder]: For program point L255(lines 255 400) no Hoare annotation was computed. [2021-10-29 06:01:06,239 INFO L857 garLoopResultBuilder]: For program point L90(lines 90 400) no Hoare annotation was computed. [2021-10-29 06:01:06,239 INFO L857 garLoopResultBuilder]: For program point L355(lines 355 400) no Hoare annotation was computed. [2021-10-29 06:01:06,239 INFO L857 garLoopResultBuilder]: For program point L322(lines 322 400) no Hoare annotation was computed. [2021-10-29 06:01:06,240 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-29 06:01:06,240 INFO L857 garLoopResultBuilder]: For program point L124(lines 124 400) no Hoare annotation was computed. [2021-10-29 06:01:06,240 INFO L860 garLoopResultBuilder]: At program point L587(lines 587 604) the Hoare annotation is: true [2021-10-29 06:01:06,240 INFO L857 garLoopResultBuilder]: For program point L455-1(lines 40 585) no Hoare annotation was computed. [2021-10-29 06:01:06,240 INFO L857 garLoopResultBuilder]: For program point L224(lines 224 400) no Hoare annotation was computed. [2021-10-29 06:01:06,241 INFO L857 garLoopResultBuilder]: For program point L158(lines 158 400) no Hoare annotation was computed. [2021-10-29 06:01:06,241 INFO L857 garLoopResultBuilder]: For program point L59(lines 59 400) no Hoare annotation was computed. [2021-10-29 06:01:06,241 INFO L857 garLoopResultBuilder]: For program point L94(lines 94 400) no Hoare annotation was computed. [2021-10-29 06:01:06,241 INFO L857 garLoopResultBuilder]: For program point L458-1(lines 40 585) no Hoare annotation was computed. [2021-10-29 06:01:06,241 INFO L857 garLoopResultBuilder]: For program point L392(lines 392 400) no Hoare annotation was computed. [2021-10-29 06:01:06,242 INFO L857 garLoopResultBuilder]: For program point L326(lines 326 400) no Hoare annotation was computed. [2021-10-29 06:01:06,242 INFO L857 garLoopResultBuilder]: For program point L260(lines 260 400) no Hoare annotation was computed. [2021-10-29 06:01:06,242 INFO L857 garLoopResultBuilder]: For program point L459(line 459) no Hoare annotation was computed. [2021-10-29 06:01:06,242 INFO L857 garLoopResultBuilder]: For program point L228(lines 228 400) no Hoare annotation was computed. [2021-10-29 06:01:06,242 INFO L857 garLoopResultBuilder]: For program point L162(lines 162 400) no Hoare annotation was computed. [2021-10-29 06:01:06,242 INFO L857 garLoopResultBuilder]: For program point L129(lines 129 400) no Hoare annotation was computed. [2021-10-29 06:01:06,243 INFO L857 garLoopResultBuilder]: For program point L328(lines 328 400) no Hoare annotation was computed. [2021-10-29 06:01:06,243 INFO L857 garLoopResultBuilder]: For program point L196(lines 196 400) no Hoare annotation was computed. [2021-10-29 06:01:06,243 INFO L857 garLoopResultBuilder]: For program point L64(lines 64 400) no Hoare annotation was computed. [2021-10-29 06:01:06,243 INFO L853 garLoopResultBuilder]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse0 (= ~a21~0 1)) (.cse2 (<= ~a21~0 0)) (.cse1 (<= ~a16~0 5))) (or (and .cse0 .cse1) (and .cse2 (= ~a20~0 1)) (and (not (= ~a7~0 1)) .cse0) (and .cse2 (= ~a17~0 1) .cse1))) [2021-10-29 06:01:06,244 INFO L857 garLoopResultBuilder]: For program point L296(lines 296 400) no Hoare annotation was computed. [2021-10-29 06:01:06,244 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 459) no Hoare annotation was computed. [2021-10-29 06:01:06,244 INFO L857 garLoopResultBuilder]: For program point L363(lines 363 400) no Hoare annotation was computed. [2021-10-29 06:01:06,244 INFO L857 garLoopResultBuilder]: For program point L199(lines 199 400) no Hoare annotation was computed. [2021-10-29 06:01:06,244 INFO L857 garLoopResultBuilder]: For program point L365(lines 365 400) no Hoare annotation was computed. [2021-10-29 06:01:06,245 INFO L857 garLoopResultBuilder]: For program point L266(lines 266 400) no Hoare annotation was computed. [2021-10-29 06:01:06,245 INFO L857 garLoopResultBuilder]: For program point L233(lines 233 400) no Hoare annotation was computed. [2021-10-29 06:01:06,245 INFO L857 garLoopResultBuilder]: For program point L134(lines 134 400) no Hoare annotation was computed. [2021-10-29 06:01:06,248 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 06:01:06,250 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 06:01:06,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 06:01:06 BoogieIcfgContainer [2021-10-29 06:01:06,266 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 06:01:06,267 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 06:01:06,267 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 06:01:06,267 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 06:01:06,268 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 06:00:59" (3/4) ... [2021-10-29 06:01:06,271 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-29 06:01:06,293 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 109 nodes and edges [2021-10-29 06:01:06,295 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2021-10-29 06:01:06,297 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-10-29 06:01:06,299 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-29 06:01:06,475 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d0e477e-772e-49fb-a7ad-e64d3ea136f1/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 06:01:06,475 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 06:01:06,477 INFO L168 Benchmark]: Toolchain (without parser) took 10483.82 ms. Allocated memory was 113.2 MB in the beginning and 190.8 MB in the end (delta: 77.6 MB). Free memory was 77.9 MB in the beginning and 91.5 MB in the end (delta: -13.7 MB). Peak memory consumption was 63.8 MB. Max. memory is 16.1 GB. [2021-10-29 06:01:06,478 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 113.2 MB. Free memory is still 66.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 06:01:06,479 INFO L168 Benchmark]: CACSL2BoogieTranslator took 739.95 ms. Allocated memory is still 113.2 MB. Free memory was 77.9 MB in the beginning and 70.5 MB in the end (delta: 7.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-29 06:01:06,479 INFO L168 Benchmark]: Boogie Procedure Inliner took 113.24 ms. Allocated memory is still 113.2 MB. Free memory was 70.5 MB in the beginning and 64.7 MB in the end (delta: 5.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-29 06:01:06,479 INFO L168 Benchmark]: Boogie Preprocessor took 104.27 ms. Allocated memory is still 113.2 MB. Free memory was 64.7 MB in the beginning and 60.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-29 06:01:06,480 INFO L168 Benchmark]: RCFGBuilder took 2096.48 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 60.5 MB in the beginning and 70.2 MB in the end (delta: -9.7 MB). Peak memory consumption was 46.6 MB. Max. memory is 16.1 GB. [2021-10-29 06:01:06,480 INFO L168 Benchmark]: TraceAbstraction took 7202.93 ms. Allocated memory was 136.3 MB in the beginning and 190.8 MB in the end (delta: 54.5 MB). Free memory was 70.2 MB in the beginning and 107.3 MB in the end (delta: -37.0 MB). Peak memory consumption was 17.5 MB. Max. memory is 16.1 GB. [2021-10-29 06:01:06,481 INFO L168 Benchmark]: Witness Printer took 208.91 ms. Allocated memory is still 190.8 MB. Free memory was 107.3 MB in the beginning and 91.5 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-29 06:01:06,483 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 113.2 MB. Free memory is still 66.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 739.95 ms. Allocated memory is still 113.2 MB. Free memory was 77.9 MB in the beginning and 70.5 MB in the end (delta: 7.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 113.24 ms. Allocated memory is still 113.2 MB. Free memory was 70.5 MB in the beginning and 64.7 MB in the end (delta: 5.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 104.27 ms. Allocated memory is still 113.2 MB. Free memory was 64.7 MB in the beginning and 60.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2096.48 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 60.5 MB in the beginning and 70.2 MB in the end (delta: -9.7 MB). Peak memory consumption was 46.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7202.93 ms. Allocated memory was 136.3 MB in the beginning and 190.8 MB in the end (delta: 54.5 MB). Free memory was 70.2 MB in the beginning and 107.3 MB in the end (delta: -37.0 MB). Peak memory consumption was 17.5 MB. Max. memory is 16.1 GB. * Witness Printer took 208.91 ms. Allocated memory is still 190.8 MB. Free memory was 107.3 MB in the beginning and 91.5 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 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: 459]: 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: 7.0s, OverallIterations: 8, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 380 SDtfs, 610 SDslu, 35 SDs, 0 SdLazy, 2031 SolverSat, 569 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 371 GetRequests, 358 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=926occurred in iteration=7, InterpolantAutomatonStates: 26, 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, 8 MinimizatonAttempts, 355 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 31 NumberOfFragments, 67 HoareAnnotationTreeSize, 3 FomulaSimplifications, 464 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 156 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 1033 NumberOfCodeBlocks, 1033 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 1199 ConstructedInterpolants, 0 QuantifiedInterpolants, 2742 SizeOfPredicates, 0 NumberOfNonLiveVariables, 426 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 10 InterpolantComputations, 9 PerfectInterpolantSequences, 903/914 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 && a16 <= 5) || (a21 <= 0 && a20 == 1)) || (!(a7 == 1) && a21 == 1)) || ((a21 <= 0 && a17 == 1) && a16 <= 5) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: (((a21 == 1 && a16 <= 5) || (a21 <= 0 && a20 == 1)) || (!(a7 == 1) && a21 == 1)) || ((a21 <= 0 && a17 == 1) && a16 <= 5) RESULT: Ultimate proved your program to be correct! [2021-10-29 06:01:06,544 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d0e477e-772e-49fb-a7ad-e64d3ea136f1/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...