./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label24.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aad8c55-d37a-4b56-a8b2-bf39fcc50f74/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aad8c55-d37a-4b56-a8b2-bf39fcc50f74/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aad8c55-d37a-4b56-a8b2-bf39fcc50f74/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aad8c55-d37a-4b56-a8b2-bf39fcc50f74/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label24.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aad8c55-d37a-4b56-a8b2-bf39fcc50f74/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aad8c55-d37a-4b56-a8b2-bf39fcc50f74/bin/utaipan-aC7eJsxGYH --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 2a6634174770c2d78435b26741915661650ffd8b51b8148a319e19b0e5237d4f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 05:42:55,676 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:42:55,678 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:42:55,711 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:42:55,712 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:42:55,714 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:42:55,715 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:42:55,718 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:42:55,720 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:42:55,722 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:42:55,723 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:42:55,724 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:42:55,725 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:42:55,726 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:42:55,728 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:42:55,730 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:42:55,731 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:42:55,732 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:42:55,734 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:42:55,736 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:42:55,738 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:42:55,743 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:42:55,744 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:42:55,746 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:42:55,750 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:42:55,756 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:42:55,757 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:42:55,758 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:42:55,763 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:42:55,764 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:42:55,765 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:42:55,766 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:42:55,768 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:42:55,769 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:42:55,771 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:42:55,772 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:42:55,774 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:42:55,774 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:42:55,774 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:42:55,775 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:42:55,776 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:42:55,777 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aad8c55-d37a-4b56-a8b2-bf39fcc50f74/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 05:42:55,823 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:42:55,824 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:42:55,825 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:42:55,826 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:42:55,826 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:42:55,826 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:42:55,826 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 05:42:55,827 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:42:55,833 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:42:55,834 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 05:42:55,835 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 05:42:55,835 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:42:55,835 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 05:42:55,836 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 05:42:55,836 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 05:42:55,837 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:42:55,837 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 05:42:55,837 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 05:42:55,837 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 05:42:55,838 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:42:55,838 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 05:42:55,838 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:42:55,838 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 05:42:55,839 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:42:55,839 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 05:42:55,839 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 05:42:55,839 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:42:55,840 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 05:42:55,840 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:42:55,841 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:42:55,842 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:42:55,842 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:42:55,842 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:42:55,843 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 05:42:55,843 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 05:42:55,843 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 05:42:55,843 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 05:42:55,844 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:42:55,844 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:42:55,844 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_5aad8c55-d37a-4b56-a8b2-bf39fcc50f74/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aad8c55-d37a-4b56-a8b2-bf39fcc50f74/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2a6634174770c2d78435b26741915661650ffd8b51b8148a319e19b0e5237d4f [2021-11-03 05:42:56,147 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:42:56,176 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:42:56,178 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:42:56,180 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:42:56,180 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:42:56,181 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aad8c55-d37a-4b56-a8b2-bf39fcc50f74/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/eca-rers2012/Problem02_label24.c [2021-11-03 05:42:56,260 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aad8c55-d37a-4b56-a8b2-bf39fcc50f74/bin/utaipan-aC7eJsxGYH/data/0615219cd/f3517c91e17542cc9af4585c097ff5e0/FLAGc73fd7a59 [2021-11-03 05:42:56,863 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:42:56,864 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aad8c55-d37a-4b56-a8b2-bf39fcc50f74/sv-benchmarks/c/eca-rers2012/Problem02_label24.c [2021-11-03 05:42:56,889 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aad8c55-d37a-4b56-a8b2-bf39fcc50f74/bin/utaipan-aC7eJsxGYH/data/0615219cd/f3517c91e17542cc9af4585c097ff5e0/FLAGc73fd7a59 [2021-11-03 05:42:57,134 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aad8c55-d37a-4b56-a8b2-bf39fcc50f74/bin/utaipan-aC7eJsxGYH/data/0615219cd/f3517c91e17542cc9af4585c097ff5e0 [2021-11-03 05:42:57,137 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:42:57,138 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:42:57,144 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:42:57,144 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:42:57,148 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:42:57,149 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:42:57" (1/1) ... [2021-11-03 05:42:57,150 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57aaea9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:42:57, skipping insertion in model container [2021-11-03 05:42:57,152 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:42:57" (1/1) ... [2021-11-03 05:42:57,161 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:42:57,234 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:42:57,604 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_5aad8c55-d37a-4b56-a8b2-bf39fcc50f74/sv-benchmarks/c/eca-rers2012/Problem02_label24.c[18375,18388] [2021-11-03 05:42:57,630 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:42:57,640 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 05:42:57,776 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_5aad8c55-d37a-4b56-a8b2-bf39fcc50f74/sv-benchmarks/c/eca-rers2012/Problem02_label24.c[18375,18388] [2021-11-03 05:42:57,788 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:42:57,811 INFO L208 MainTranslator]: Completed translation [2021-11-03 05:42:57,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:42:57 WrapperNode [2021-11-03 05:42:57,812 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:42:57,813 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 05:42:57,813 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 05:42:57,814 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 05:42:57,820 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:42:57" (1/1) ... [2021-11-03 05:42:57,839 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:42:57" (1/1) ... [2021-11-03 05:42:57,894 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 05:42:57,895 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 05:42:57,895 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 05:42:57,895 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 05:42:57,904 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:42:57" (1/1) ... [2021-11-03 05:42:57,904 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:42:57" (1/1) ... [2021-11-03 05:42:57,909 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:42:57" (1/1) ... [2021-11-03 05:42:57,910 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:42:57" (1/1) ... [2021-11-03 05:42:57,950 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:42:57" (1/1) ... [2021-11-03 05:42:57,987 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:42:57" (1/1) ... [2021-11-03 05:42:57,991 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:42:57" (1/1) ... [2021-11-03 05:42:57,998 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 05:42:57,999 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 05:42:57,999 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 05:42:57,999 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 05:42:58,000 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:42:57" (1/1) ... [2021-11-03 05:42:58,008 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:42:58,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aad8c55-d37a-4b56-a8b2-bf39fcc50f74/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:42:58,070 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aad8c55-d37a-4b56-a8b2-bf39fcc50f74/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 05:42:58,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aad8c55-d37a-4b56-a8b2-bf39fcc50f74/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 05:42:58,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 05:42:58,114 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 05:42:58,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 05:42:58,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 05:43:00,069 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 05:43:00,069 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-11-03 05:43:00,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:43:00 BoogieIcfgContainer [2021-11-03 05:43:00,073 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 05:43:00,075 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 05:43:00,075 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 05:43:00,079 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 05:43:00,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 05:42:57" (1/3) ... [2021-11-03 05:43:00,081 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10d0fcde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:43:00, skipping insertion in model container [2021-11-03 05:43:00,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:42:57" (2/3) ... [2021-11-03 05:43:00,081 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10d0fcde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:43:00, skipping insertion in model container [2021-11-03 05:43:00,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:43:00" (3/3) ... [2021-11-03 05:43:00,083 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label24.c [2021-11-03 05:43:00,089 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 05:43:00,089 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-03 05:43:00,157 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 05:43:00,167 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 05:43:00,167 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-03 05:43:00,189 INFO L276 IsEmpty]: Start isEmpty. Operand has 85 states, 83 states have (on average 1.9518072289156627) internal successors, (162), 84 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:00,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-03 05:43:00,201 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:43:00,202 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:43:00,203 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:43:00,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:43:00,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1814579991, now seen corresponding path program 1 times [2021-11-03 05:43:00,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:43:00,231 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323071223] [2021-11-03 05:43:00,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:43:00,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:43:00,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:43:00,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:43:00,718 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:43:00,719 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323071223] [2021-11-03 05:43:00,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323071223] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:43:00,720 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:43:00,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 05:43:00,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533378001] [2021-11-03 05:43:00,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:43:00,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:43:00,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:43:00,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:43:00,751 INFO L87 Difference]: Start difference. First operand has 85 states, 83 states have (on average 1.9518072289156627) internal successors, (162), 84 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:01,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:43:01,250 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2021-11-03 05:43:01,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:43:01,252 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-03 05:43:01,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:43:01,270 INFO L225 Difference]: With dead ends: 251 [2021-11-03 05:43:01,270 INFO L226 Difference]: Without dead ends: 163 [2021-11-03 05:43:01,275 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:43:01,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-11-03 05:43:01,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2021-11-03 05:43:01,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 1.9320987654320987) internal successors, (313), 162 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:01,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 313 transitions. [2021-11-03 05:43:01,351 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 313 transitions. Word has length 80 [2021-11-03 05:43:01,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:43:01,353 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 313 transitions. [2021-11-03 05:43:01,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:01,353 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 313 transitions. [2021-11-03 05:43:01,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-03 05:43:01,359 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:43:01,360 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:43:01,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 05:43:01,361 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:43:01,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:43:01,364 INFO L85 PathProgramCache]: Analyzing trace with hash -329017879, now seen corresponding path program 1 times [2021-11-03 05:43:01,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:43:01,364 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184655698] [2021-11-03 05:43:01,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:43:01,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:43:01,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:43:01,484 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:43:01,485 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:43:01,485 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184655698] [2021-11-03 05:43:01,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184655698] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:43:01,486 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:43:01,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 05:43:01,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065711229] [2021-11-03 05:43:01,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:43:01,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:43:01,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:43:01,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:43:01,490 INFO L87 Difference]: Start difference. First operand 163 states and 313 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:01,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:43:01,930 INFO L93 Difference]: Finished difference Result 487 states and 937 transitions. [2021-11-03 05:43:01,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:43:01,932 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2021-11-03 05:43:01,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:43:01,936 INFO L225 Difference]: With dead ends: 487 [2021-11-03 05:43:01,936 INFO L226 Difference]: Without dead ends: 325 [2021-11-03 05:43:01,939 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:43:01,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2021-11-03 05:43:01,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 323. [2021-11-03 05:43:01,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 322 states have (on average 1.84472049689441) internal successors, (594), 322 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:01,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 594 transitions. [2021-11-03 05:43:01,986 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 594 transitions. Word has length 91 [2021-11-03 05:43:01,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:43:01,989 INFO L470 AbstractCegarLoop]: Abstraction has 323 states and 594 transitions. [2021-11-03 05:43:01,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:01,989 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 594 transitions. [2021-11-03 05:43:01,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-03 05:43:01,998 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:43:01,999 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:43:01,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 05:43:01,999 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:43:02,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:43:02,010 INFO L85 PathProgramCache]: Analyzing trace with hash -87620780, now seen corresponding path program 1 times [2021-11-03 05:43:02,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:43:02,011 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571483251] [2021-11-03 05:43:02,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:43:02,011 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:43:02,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:43:02,095 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-03 05:43:02,095 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:43:02,096 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571483251] [2021-11-03 05:43:02,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571483251] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:43:02,096 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:43:02,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 05:43:02,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24314200] [2021-11-03 05:43:02,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:43:02,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:43:02,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:43:02,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:43:02,099 INFO L87 Difference]: Start difference. First operand 323 states and 594 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:02,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:43:02,495 INFO L93 Difference]: Finished difference Result 885 states and 1638 transitions. [2021-11-03 05:43:02,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:43:02,496 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 0 states have call successors, (0), 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 95 [2021-11-03 05:43:02,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:43:02,500 INFO L225 Difference]: With dead ends: 885 [2021-11-03 05:43:02,500 INFO L226 Difference]: Without dead ends: 563 [2021-11-03 05:43:02,502 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:43:02,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2021-11-03 05:43:02,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 483. [2021-11-03 05:43:02,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 482 states have (on average 1.616182572614108) internal successors, (779), 482 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:02,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 779 transitions. [2021-11-03 05:43:02,520 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 779 transitions. Word has length 95 [2021-11-03 05:43:02,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:43:02,520 INFO L470 AbstractCegarLoop]: Abstraction has 483 states and 779 transitions. [2021-11-03 05:43:02,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:02,521 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 779 transitions. [2021-11-03 05:43:02,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-03 05:43:02,522 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:43:02,523 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:43:02,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-03 05:43:02,523 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:43:02,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:43:02,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1540150481, now seen corresponding path program 1 times [2021-11-03 05:43:02,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:43:02,524 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153378292] [2021-11-03 05:43:02,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:43:02,525 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:43:02,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:43:02,605 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-03 05:43:02,606 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:43:02,606 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153378292] [2021-11-03 05:43:02,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153378292] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:43:02,606 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:43:02,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 05:43:02,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130745778] [2021-11-03 05:43:02,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:43:02,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:43:02,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:43:02,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:43:02,608 INFO L87 Difference]: Start difference. First operand 483 states and 779 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:03,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:43:03,004 INFO L93 Difference]: Finished difference Result 1205 states and 2008 transitions. [2021-11-03 05:43:03,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:43:03,005 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) 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 100 [2021-11-03 05:43:03,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:43:03,009 INFO L225 Difference]: With dead ends: 1205 [2021-11-03 05:43:03,009 INFO L226 Difference]: Without dead ends: 723 [2021-11-03 05:43:03,010 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:43:03,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2021-11-03 05:43:03,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 643. [2021-11-03 05:43:03,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 642 states have (on average 1.5093457943925233) internal successors, (969), 642 states have internal predecessors, (969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:03,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 969 transitions. [2021-11-03 05:43:03,029 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 969 transitions. Word has length 100 [2021-11-03 05:43:03,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:43:03,029 INFO L470 AbstractCegarLoop]: Abstraction has 643 states and 969 transitions. [2021-11-03 05:43:03,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:03,030 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 969 transitions. [2021-11-03 05:43:03,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-03 05:43:03,032 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:43:03,032 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:43:03,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-03 05:43:03,032 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:43:03,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:43:03,033 INFO L85 PathProgramCache]: Analyzing trace with hash -163973979, now seen corresponding path program 1 times [2021-11-03 05:43:03,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:43:03,033 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586713383] [2021-11-03 05:43:03,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:43:03,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:43:03,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:43:03,083 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-03 05:43:03,086 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:43:03,087 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586713383] [2021-11-03 05:43:03,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586713383] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:43:03,087 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:43:03,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 05:43:03,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614645364] [2021-11-03 05:43:03,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:43:03,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:43:03,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:43:03,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:43:03,092 INFO L87 Difference]: Start difference. First operand 643 states and 969 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:03,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:43:03,426 INFO L93 Difference]: Finished difference Result 1765 states and 2719 transitions. [2021-11-03 05:43:03,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:43:03,427 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 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 101 [2021-11-03 05:43:03,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:43:03,434 INFO L225 Difference]: With dead ends: 1765 [2021-11-03 05:43:03,434 INFO L226 Difference]: Without dead ends: 1123 [2021-11-03 05:43:03,435 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:43:03,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2021-11-03 05:43:03,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 1123. [2021-11-03 05:43:03,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1123 states, 1122 states have (on average 1.4536541889483066) internal successors, (1631), 1122 states have internal predecessors, (1631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:03,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1631 transitions. [2021-11-03 05:43:03,477 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1631 transitions. Word has length 101 [2021-11-03 05:43:03,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:43:03,477 INFO L470 AbstractCegarLoop]: Abstraction has 1123 states and 1631 transitions. [2021-11-03 05:43:03,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:03,477 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1631 transitions. [2021-11-03 05:43:03,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-03 05:43:03,480 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:43:03,480 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:43:03,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-03 05:43:03,481 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:43:03,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:43:03,481 INFO L85 PathProgramCache]: Analyzing trace with hash -742241849, now seen corresponding path program 1 times [2021-11-03 05:43:03,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:43:03,482 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950890272] [2021-11-03 05:43:03,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:43:03,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:43:03,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:43:03,547 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-03 05:43:03,550 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:43:03,550 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950890272] [2021-11-03 05:43:03,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950890272] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:43:03,552 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:43:03,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 05:43:03,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391902036] [2021-11-03 05:43:03,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:43:03,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:43:03,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:43:03,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:43:03,559 INFO L87 Difference]: Start difference. First operand 1123 states and 1631 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:03,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:43:03,929 INFO L93 Difference]: Finished difference Result 2645 states and 3802 transitions. [2021-11-03 05:43:03,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:43:03,930 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 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 104 [2021-11-03 05:43:03,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:43:03,938 INFO L225 Difference]: With dead ends: 2645 [2021-11-03 05:43:03,938 INFO L226 Difference]: Without dead ends: 1523 [2021-11-03 05:43:03,940 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:43:03,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1523 states. [2021-11-03 05:43:03,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1523 to 1443. [2021-11-03 05:43:03,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1443 states, 1442 states have (on average 1.3703190013869626) internal successors, (1976), 1442 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:03,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1443 states to 1443 states and 1976 transitions. [2021-11-03 05:43:03,994 INFO L78 Accepts]: Start accepts. Automaton has 1443 states and 1976 transitions. Word has length 104 [2021-11-03 05:43:03,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:43:03,995 INFO L470 AbstractCegarLoop]: Abstraction has 1443 states and 1976 transitions. [2021-11-03 05:43:03,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:03,995 INFO L276 IsEmpty]: Start isEmpty. Operand 1443 states and 1976 transitions. [2021-11-03 05:43:03,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-03 05:43:03,998 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:43:03,999 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:43:03,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-03 05:43:03,999 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:43:03,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:43:04,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1486178021, now seen corresponding path program 1 times [2021-11-03 05:43:04,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:43:04,000 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033882125] [2021-11-03 05:43:04,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:43:04,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:43:04,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:43:04,065 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-03 05:43:04,066 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:43:04,066 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033882125] [2021-11-03 05:43:04,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033882125] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:43:04,067 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:43:04,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 05:43:04,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612745755] [2021-11-03 05:43:04,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:43:04,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:43:04,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:43:04,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:43:04,069 INFO L87 Difference]: Start difference. First operand 1443 states and 1976 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:04,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:43:04,375 INFO L93 Difference]: Finished difference Result 2885 states and 3951 transitions. [2021-11-03 05:43:04,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:43:04,376 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2021-11-03 05:43:04,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:43:04,385 INFO L225 Difference]: With dead ends: 2885 [2021-11-03 05:43:04,385 INFO L226 Difference]: Without dead ends: 1443 [2021-11-03 05:43:04,387 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:43:04,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1443 states. [2021-11-03 05:43:04,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1443 to 1443. [2021-11-03 05:43:04,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1443 states, 1442 states have (on average 1.3044382801664356) internal successors, (1881), 1442 states have internal predecessors, (1881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:04,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1443 states to 1443 states and 1881 transitions. [2021-11-03 05:43:04,428 INFO L78 Accepts]: Start accepts. Automaton has 1443 states and 1881 transitions. Word has length 135 [2021-11-03 05:43:04,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:43:04,428 INFO L470 AbstractCegarLoop]: Abstraction has 1443 states and 1881 transitions. [2021-11-03 05:43:04,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:04,429 INFO L276 IsEmpty]: Start isEmpty. Operand 1443 states and 1881 transitions. [2021-11-03 05:43:04,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-03 05:43:04,432 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:43:04,433 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:43:04,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-03 05:43:04,433 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:43:04,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:43:04,434 INFO L85 PathProgramCache]: Analyzing trace with hash 497086565, now seen corresponding path program 1 times [2021-11-03 05:43:04,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:43:04,434 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405784950] [2021-11-03 05:43:04,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:43:04,435 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:43:04,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:43:04,485 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-03 05:43:04,485 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:43:04,486 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405784950] [2021-11-03 05:43:04,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405784950] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:43:04,486 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:43:04,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 05:43:04,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325292656] [2021-11-03 05:43:04,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:43:04,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:43:04,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:43:04,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:43:04,488 INFO L87 Difference]: Start difference. First operand 1443 states and 1881 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:04,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:43:04,840 INFO L93 Difference]: Finished difference Result 3205 states and 4261 transitions. [2021-11-03 05:43:04,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:43:04,840 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 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 139 [2021-11-03 05:43:04,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:43:04,851 INFO L225 Difference]: With dead ends: 3205 [2021-11-03 05:43:04,851 INFO L226 Difference]: Without dead ends: 1763 [2021-11-03 05:43:04,853 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:43:04,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1763 states. [2021-11-03 05:43:04,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1763 to 1683. [2021-11-03 05:43:04,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1683 states, 1682 states have (on average 1.2841854934601664) internal successors, (2160), 1682 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:04,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1683 states to 1683 states and 2160 transitions. [2021-11-03 05:43:04,927 INFO L78 Accepts]: Start accepts. Automaton has 1683 states and 2160 transitions. Word has length 139 [2021-11-03 05:43:04,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:43:04,928 INFO L470 AbstractCegarLoop]: Abstraction has 1683 states and 2160 transitions. [2021-11-03 05:43:04,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:04,928 INFO L276 IsEmpty]: Start isEmpty. Operand 1683 states and 2160 transitions. [2021-11-03 05:43:04,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-11-03 05:43:04,933 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:43:04,934 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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] [2021-11-03 05:43:04,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-03 05:43:04,934 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:43:04,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:43:04,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1123873355, now seen corresponding path program 1 times [2021-11-03 05:43:04,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:43:04,935 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646915552] [2021-11-03 05:43:04,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:43:04,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:43:04,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:43:05,014 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 118 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 05:43:05,014 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:43:05,014 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646915552] [2021-11-03 05:43:05,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646915552] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:43:05,015 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:43:05,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 05:43:05,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995664870] [2021-11-03 05:43:05,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:43:05,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:43:05,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:43:05,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:43:05,017 INFO L87 Difference]: Start difference. First operand 1683 states and 2160 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:05,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:43:05,363 INFO L93 Difference]: Finished difference Result 3845 states and 5034 transitions. [2021-11-03 05:43:05,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:43:05,364 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 166 [2021-11-03 05:43:05,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:43:05,375 INFO L225 Difference]: With dead ends: 3845 [2021-11-03 05:43:05,375 INFO L226 Difference]: Without dead ends: 2163 [2021-11-03 05:43:05,377 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:43:05,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2163 states. [2021-11-03 05:43:05,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2163 to 2163. [2021-11-03 05:43:05,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2163 states, 2162 states have (on average 1.2719703977798336) internal successors, (2750), 2162 states have internal predecessors, (2750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:05,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2163 states to 2163 states and 2750 transitions. [2021-11-03 05:43:05,431 INFO L78 Accepts]: Start accepts. Automaton has 2163 states and 2750 transitions. Word has length 166 [2021-11-03 05:43:05,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:43:05,432 INFO L470 AbstractCegarLoop]: Abstraction has 2163 states and 2750 transitions. [2021-11-03 05:43:05,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:05,432 INFO L276 IsEmpty]: Start isEmpty. Operand 2163 states and 2750 transitions. [2021-11-03 05:43:05,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-11-03 05:43:05,437 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:43:05,438 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-03 05:43:05,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-03 05:43:05,438 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:43:05,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:43:05,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1505145455, now seen corresponding path program 1 times [2021-11-03 05:43:05,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:43:05,440 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209889142] [2021-11-03 05:43:05,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:43:05,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:43:05,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:43:05,497 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-03 05:43:05,498 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:43:05,498 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209889142] [2021-11-03 05:43:05,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209889142] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:43:05,499 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:43:05,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 05:43:05,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807902610] [2021-11-03 05:43:05,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:43:05,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:43:05,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:43:05,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:43:05,501 INFO L87 Difference]: Start difference. First operand 2163 states and 2750 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:05,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:43:05,708 INFO L93 Difference]: Finished difference Result 3763 states and 4780 transitions. [2021-11-03 05:43:05,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:43:05,709 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 0 states have call successors, (0), 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 172 [2021-11-03 05:43:05,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:43:05,710 INFO L225 Difference]: With dead ends: 3763 [2021-11-03 05:43:05,710 INFO L226 Difference]: Without dead ends: 0 [2021-11-03 05:43:05,714 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:43:05,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-03 05:43:05,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-03 05:43:05,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:05,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-03 05:43:05,715 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 172 [2021-11-03 05:43:05,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:43:05,715 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-03 05:43:05,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:43:05,716 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-03 05:43:05,716 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-03 05:43:05,719 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 05:43:05,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-03 05:43:05,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-03 05:43:05,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:43:05,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:43:05,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:43:05,896 INFO L857 garLoopResultBuilder]: For program point L301(lines 301 423) no Hoare annotation was computed. [2021-11-03 05:43:05,897 INFO L857 garLoopResultBuilder]: For program point L235(lines 235 423) no Hoare annotation was computed. [2021-11-03 05:43:05,897 INFO L857 garLoopResultBuilder]: For program point L169(lines 169 423) no Hoare annotation was computed. [2021-11-03 05:43:05,897 INFO L857 garLoopResultBuilder]: For program point L303(lines 303 423) no Hoare annotation was computed. [2021-11-03 05:43:05,897 INFO L857 garLoopResultBuilder]: For program point L105(lines 105 423) no Hoare annotation was computed. [2021-11-03 05:43:05,897 INFO L857 garLoopResultBuilder]: For program point L40(lines 40 423) no Hoare annotation was computed. [2021-11-03 05:43:05,897 INFO L857 garLoopResultBuilder]: For program point L371(lines 371 423) no Hoare annotation was computed. [2021-11-03 05:43:05,898 INFO L857 garLoopResultBuilder]: For program point L307(lines 307 423) no Hoare annotation was computed. [2021-11-03 05:43:05,898 INFO L857 garLoopResultBuilder]: For program point L175(lines 175 423) no Hoare annotation was computed. [2021-11-03 05:43:05,898 INFO L857 garLoopResultBuilder]: For program point L109(lines 109 423) no Hoare annotation was computed. [2021-11-03 05:43:05,898 INFO L857 garLoopResultBuilder]: For program point L242(lines 242 423) no Hoare annotation was computed. [2021-11-03 05:43:05,898 INFO L857 garLoopResultBuilder]: For program point L45(lines 45 423) no Hoare annotation was computed. [2021-11-03 05:43:05,898 INFO L857 garLoopResultBuilder]: For program point L244(lines 244 423) no Hoare annotation was computed. [2021-11-03 05:43:05,898 INFO L857 garLoopResultBuilder]: For program point L179(lines 179 423) no Hoare annotation was computed. [2021-11-03 05:43:05,898 INFO L857 garLoopResultBuilder]: For program point L378(lines 378 423) no Hoare annotation was computed. [2021-11-03 05:43:05,899 INFO L857 garLoopResultBuilder]: For program point L48(lines 48 423) no Hoare annotation was computed. [2021-11-03 05:43:05,899 INFO L857 garLoopResultBuilder]: For program point L247(lines 247 423) no Hoare annotation was computed. [2021-11-03 05:43:05,899 INFO L857 garLoopResultBuilder]: For program point L116(lines 116 423) no Hoare annotation was computed. [2021-11-03 05:43:05,899 INFO L857 garLoopResultBuilder]: For program point L52(lines 52 423) no Hoare annotation was computed. [2021-11-03 05:43:05,899 INFO L857 garLoopResultBuilder]: For program point L185(lines 185 423) no Hoare annotation was computed. [2021-11-03 05:43:05,899 INFO L857 garLoopResultBuilder]: For program point L385(lines 385 423) no Hoare annotation was computed. [2021-11-03 05:43:05,899 INFO L857 garLoopResultBuilder]: For program point L319(lines 319 423) no Hoare annotation was computed. [2021-11-03 05:43:05,899 INFO L857 garLoopResultBuilder]: For program point L189(lines 189 423) no Hoare annotation was computed. [2021-11-03 05:43:05,900 INFO L857 garLoopResultBuilder]: For program point L123(lines 123 423) no Hoare annotation was computed. [2021-11-03 05:43:05,900 INFO L857 garLoopResultBuilder]: For program point L57(lines 57 423) no Hoare annotation was computed. [2021-11-03 05:43:05,900 INFO L857 garLoopResultBuilder]: For program point L520-1(lines 39 608) no Hoare annotation was computed. [2021-11-03 05:43:05,900 INFO L857 garLoopResultBuilder]: For program point L388(lines 388 423) no Hoare annotation was computed. [2021-11-03 05:43:05,900 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-03 05:43:05,900 INFO L857 garLoopResultBuilder]: For program point L390(lines 390 423) no Hoare annotation was computed. [2021-11-03 05:43:05,900 INFO L857 garLoopResultBuilder]: For program point L324(lines 324 423) no Hoare annotation was computed. [2021-11-03 05:43:05,900 INFO L857 garLoopResultBuilder]: For program point L258(lines 258 423) no Hoare annotation was computed. [2021-11-03 05:43:05,901 INFO L857 garLoopResultBuilder]: For program point L60(lines 60 423) no Hoare annotation was computed. [2021-11-03 05:43:05,901 INFO L857 garLoopResultBuilder]: For program point L523-1(lines 39 608) no Hoare annotation was computed. [2021-11-03 05:43:05,901 INFO L857 garLoopResultBuilder]: For program point L524(line 524) no Hoare annotation was computed. [2021-11-03 05:43:05,901 INFO L857 garLoopResultBuilder]: For program point L195(lines 195 423) no Hoare annotation was computed. [2021-11-03 05:43:05,901 INFO L857 garLoopResultBuilder]: For program point L129(lines 129 423) no Hoare annotation was computed. [2021-11-03 05:43:05,901 INFO L857 garLoopResultBuilder]: For program point L64(lines 64 423) no Hoare annotation was computed. [2021-11-03 05:43:05,901 INFO L857 garLoopResultBuilder]: For program point L263(lines 263 423) no Hoare annotation was computed. [2021-11-03 05:43:05,901 INFO L857 garLoopResultBuilder]: For program point L197(lines 197 423) no Hoare annotation was computed. [2021-11-03 05:43:05,902 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 524) no Hoare annotation was computed. [2021-11-03 05:43:05,902 INFO L857 garLoopResultBuilder]: For program point L199(lines 199 423) no Hoare annotation was computed. [2021-11-03 05:43:05,902 INFO L857 garLoopResultBuilder]: For program point L133(lines 133 423) no Hoare annotation was computed. [2021-11-03 05:43:05,902 INFO L857 garLoopResultBuilder]: For program point L399(lines 399 423) no Hoare annotation was computed. [2021-11-03 05:43:05,902 INFO L857 garLoopResultBuilder]: For program point L201(lines 201 423) no Hoare annotation was computed. [2021-11-03 05:43:05,902 INFO L857 garLoopResultBuilder]: For program point L69(lines 69 423) no Hoare annotation was computed. [2021-11-03 05:43:05,902 INFO L857 garLoopResultBuilder]: For program point L269(lines 269 423) no Hoare annotation was computed. [2021-11-03 05:43:05,902 INFO L857 garLoopResultBuilder]: For program point L204(lines 204 423) no Hoare annotation was computed. [2021-11-03 05:43:05,903 INFO L857 garLoopResultBuilder]: For program point L271(lines 271 423) no Hoare annotation was computed. [2021-11-03 05:43:05,903 INFO L857 garLoopResultBuilder]: For program point L404(lines 404 423) no Hoare annotation was computed. [2021-11-03 05:43:05,903 INFO L857 garLoopResultBuilder]: For program point L338(lines 338 423) no Hoare annotation was computed. [2021-11-03 05:43:05,903 INFO L857 garLoopResultBuilder]: For program point L140(lines 140 423) no Hoare annotation was computed. [2021-11-03 05:43:05,903 INFO L857 garLoopResultBuilder]: For program point L75(lines 75 423) no Hoare annotation was computed. [2021-11-03 05:43:05,903 INFO L857 garLoopResultBuilder]: For program point L208(lines 208 423) no Hoare annotation was computed. [2021-11-03 05:43:05,903 INFO L857 garLoopResultBuilder]: For program point L341(lines 341 423) no Hoare annotation was computed. [2021-11-03 05:43:05,903 INFO L857 garLoopResultBuilder]: For program point L408(lines 408 423) no Hoare annotation was computed. [2021-11-03 05:43:05,904 INFO L857 garLoopResultBuilder]: For program point L144(lines 144 423) no Hoare annotation was computed. [2021-11-03 05:43:05,904 INFO L853 garLoopResultBuilder]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse1 (<= 8 ~a17~0)) (.cse4 (<= ~a28~0 10)) (.cse0 (= ~a25~0 1)) (.cse2 (<= ~a17~0 8)) (.cse3 (= ~a19~0 1))) (or (and .cse0 .cse1 .cse2 .cse3) (and (<= 10 ~a28~0) .cse2 .cse4) (and .cse0 .cse2 .cse4) (and .cse1 .cse2 .cse4) (and .cse0 (= ~a11~0 0) .cse2 .cse3))) [2021-11-03 05:43:05,904 INFO L857 garLoopResultBuilder]: For program point L79(lines 79 423) no Hoare annotation was computed. [2021-11-03 05:43:05,904 INFO L857 garLoopResultBuilder]: For program point L212(lines 212 423) no Hoare annotation was computed. [2021-11-03 05:43:05,904 INFO L860 garLoopResultBuilder]: At program point L610(lines 610 627) the Hoare annotation is: true [2021-11-03 05:43:05,904 INFO L857 garLoopResultBuilder]: For program point L412(lines 412 423) no Hoare annotation was computed. [2021-11-03 05:43:05,905 INFO L857 garLoopResultBuilder]: For program point L347(lines 347 423) no Hoare annotation was computed. [2021-11-03 05:43:05,905 INFO L857 garLoopResultBuilder]: For program point L149(lines 149 423) no Hoare annotation was computed. [2021-11-03 05:43:05,905 INFO L857 garLoopResultBuilder]: For program point L414(lines 414 423) no Hoare annotation was computed. [2021-11-03 05:43:05,905 INFO L857 garLoopResultBuilder]: For program point L84(lines 84 423) no Hoare annotation was computed. [2021-11-03 05:43:05,905 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-03 05:43:05,905 INFO L857 garLoopResultBuilder]: For program point L417(lines 417 423) no Hoare annotation was computed. [2021-11-03 05:43:05,905 INFO L857 garLoopResultBuilder]: For program point L153(lines 153 423) no Hoare annotation was computed. [2021-11-03 05:43:05,906 INFO L853 garLoopResultBuilder]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse1 (<= 8 ~a17~0)) (.cse4 (<= ~a28~0 10)) (.cse0 (= ~a25~0 1)) (.cse2 (<= ~a17~0 8)) (.cse3 (= ~a19~0 1))) (or (and .cse0 .cse1 .cse2 .cse3) (and (<= 10 ~a28~0) .cse2 .cse4) (and .cse0 .cse2 .cse4) (and .cse1 .cse2 .cse4) (and .cse0 (= ~a11~0 0) .cse2 .cse3))) [2021-11-03 05:43:05,906 INFO L857 garLoopResultBuilder]: For program point L286(lines 286 423) no Hoare annotation was computed. [2021-11-03 05:43:05,906 INFO L857 garLoopResultBuilder]: For program point L419(lines 419 423) no Hoare annotation was computed. [2021-11-03 05:43:05,906 INFO L857 garLoopResultBuilder]: For program point L222(lines 222 423) no Hoare annotation was computed. [2021-11-03 05:43:05,906 INFO L857 garLoopResultBuilder]: For program point L290(lines 290 423) no Hoare annotation was computed. [2021-11-03 05:43:05,906 INFO L857 garLoopResultBuilder]: For program point L158(lines 158 423) no Hoare annotation was computed. [2021-11-03 05:43:05,906 INFO L857 garLoopResultBuilder]: For program point L92(lines 92 423) no Hoare annotation was computed. [2021-11-03 05:43:05,906 INFO L857 garLoopResultBuilder]: For program point L621(line 621) no Hoare annotation was computed. [2021-11-03 05:43:05,907 INFO L857 garLoopResultBuilder]: For program point L225(lines 225 423) no Hoare annotation was computed. [2021-11-03 05:43:05,907 INFO L857 garLoopResultBuilder]: For program point L359(lines 359 423) no Hoare annotation was computed. [2021-11-03 05:43:05,907 INFO L857 garLoopResultBuilder]: For program point L293(lines 293 423) no Hoare annotation was computed. [2021-11-03 05:43:05,907 INFO L857 garLoopResultBuilder]: For program point L228(lines 228 423) no Hoare annotation was computed. [2021-11-03 05:43:05,907 INFO L857 garLoopResultBuilder]: For program point L296(lines 296 423) no Hoare annotation was computed. [2021-11-03 05:43:05,907 INFO L857 garLoopResultBuilder]: For program point L164(lines 164 423) no Hoare annotation was computed. [2021-11-03 05:43:05,907 INFO L857 garLoopResultBuilder]: For program point L364(lines 364 423) no Hoare annotation was computed. [2021-11-03 05:43:05,908 INFO L857 garLoopResultBuilder]: For program point L233(lines 233 423) no Hoare annotation was computed. [2021-11-03 05:43:05,908 INFO L857 garLoopResultBuilder]: For program point L101(lines 101 423) no Hoare annotation was computed. [2021-11-03 05:43:05,913 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:43:05,914 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-03 05:43:05,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 05:43:05 BoogieIcfgContainer [2021-11-03 05:43:05,930 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-03 05:43:05,931 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-03 05:43:05,931 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-03 05:43:05,931 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-03 05:43:05,932 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:43:00" (3/4) ... [2021-11-03 05:43:05,935 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-03 05:43:05,957 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 115 nodes and edges [2021-11-03 05:43:05,959 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2021-11-03 05:43:05,961 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-11-03 05:43:05,963 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-03 05:43:06,081 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aad8c55-d37a-4b56-a8b2-bf39fcc50f74/bin/utaipan-aC7eJsxGYH/witness.graphml [2021-11-03 05:43:06,081 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-03 05:43:06,082 INFO L168 Benchmark]: Toolchain (without parser) took 8943.08 ms. Allocated memory was 96.5 MB in the beginning and 211.8 MB in the end (delta: 115.3 MB). Free memory was 61.2 MB in the beginning and 137.0 MB in the end (delta: -75.8 MB). Peak memory consumption was 39.4 MB. Max. memory is 16.1 GB. [2021-11-03 05:43:06,083 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 96.5 MB. Free memory is still 51.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:43:06,083 INFO L168 Benchmark]: CACSL2BoogieTranslator took 667.90 ms. Allocated memory is still 96.5 MB. Free memory was 61.0 MB in the beginning and 54.0 MB in the end (delta: 7.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-03 05:43:06,083 INFO L168 Benchmark]: Boogie Procedure Inliner took 80.92 ms. Allocated memory is still 96.5 MB. Free memory was 53.7 MB in the beginning and 48.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-11-03 05:43:06,084 INFO L168 Benchmark]: Boogie Preprocessor took 103.19 ms. Allocated memory was 96.5 MB in the beginning and 125.8 MB in the end (delta: 29.4 MB). Free memory was 48.2 MB in the beginning and 98.7 MB in the end (delta: -50.4 MB). Peak memory consumption was 10.7 MB. Max. memory is 16.1 GB. [2021-11-03 05:43:06,084 INFO L168 Benchmark]: RCFGBuilder took 2074.30 ms. Allocated memory is still 125.8 MB. Free memory was 98.6 MB in the beginning and 52.6 MB in the end (delta: 46.0 MB). Peak memory consumption was 68.2 MB. Max. memory is 16.1 GB. [2021-11-03 05:43:06,085 INFO L168 Benchmark]: TraceAbstraction took 5855.31 ms. Allocated memory was 125.8 MB in the beginning and 211.8 MB in the end (delta: 86.0 MB). Free memory was 51.6 MB in the beginning and 152.8 MB in the end (delta: -101.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:43:06,085 INFO L168 Benchmark]: Witness Printer took 150.08 ms. Allocated memory is still 211.8 MB. Free memory was 152.8 MB in the beginning and 137.0 MB in the end (delta: 15.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-11-03 05:43:06,087 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 96.5 MB. Free memory is still 51.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 667.90 ms. Allocated memory is still 96.5 MB. Free memory was 61.0 MB in the beginning and 54.0 MB in the end (delta: 7.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 80.92 ms. Allocated memory is still 96.5 MB. Free memory was 53.7 MB in the beginning and 48.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 103.19 ms. Allocated memory was 96.5 MB in the beginning and 125.8 MB in the end (delta: 29.4 MB). Free memory was 48.2 MB in the beginning and 98.7 MB in the end (delta: -50.4 MB). Peak memory consumption was 10.7 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2074.30 ms. Allocated memory is still 125.8 MB. Free memory was 98.6 MB in the beginning and 52.6 MB in the end (delta: 46.0 MB). Peak memory consumption was 68.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5855.31 ms. Allocated memory was 125.8 MB in the beginning and 211.8 MB in the end (delta: 86.0 MB). Free memory was 51.6 MB in the beginning and 152.8 MB in the end (delta: -101.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 150.08 ms. Allocated memory is still 211.8 MB. Free memory was 152.8 MB in the beginning and 137.0 MB in the end (delta: 15.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 524]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.7s, OverallIterations: 10, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 716 SDtfs, 803 SDslu, 45 SDs, 0 SdLazy, 2284 SolverSat, 607 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2163occurred in iteration=9, InterpolantAutomatonStates: 30, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 10 MinimizatonAttempts, 322 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 45 NumberOfFragments, 115 HoareAnnotationTreeSize, 3 FomulaSimplifications, 698 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 38 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 1183 NumberOfCodeBlocks, 1183 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 1173 ConstructedInterpolants, 0 QuantifiedInterpolants, 1699 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 571/571 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 616]: Loop Invariant Derived loop invariant: ((((((a25 == 1 && 8 <= a17) && a17 <= 8) && a19 == 1) || ((10 <= a28 && a17 <= 8) && a28 <= 10)) || ((a25 == 1 && a17 <= 8) && a28 <= 10)) || ((8 <= a17 && a17 <= 8) && a28 <= 10)) || (((a25 == 1 && a11 == 0) && a17 <= 8) && a19 == 1) - InvariantResult [Line: 610]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: ((((((a25 == 1 && 8 <= a17) && a17 <= 8) && a19 == 1) || ((10 <= a28 && a17 <= 8) && a28 <= 10)) || ((a25 == 1 && a17 <= 8) && a28 <= 10)) || ((8 <= a17 && a17 <= 8) && a28 <= 10)) || (((a25 == 1 && a11 == 0) && a17 <= 8) && a19 == 1) RESULT: Ultimate proved your program to be correct! [2021-11-03 05:43:06,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5aad8c55-d37a-4b56-a8b2-bf39fcc50f74/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE