./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/eureka_05.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45995abc-972f-4773-a9cb-6c85dda57de0/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45995abc-972f-4773-a9cb-6c85dda57de0/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45995abc-972f-4773-a9cb-6c85dda57de0/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45995abc-972f-4773-a9cb-6c85dda57de0/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/eureka_05.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45995abc-972f-4773-a9cb-6c85dda57de0/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45995abc-972f-4773-a9cb-6c85dda57de0/bin/utaipan-gh47qXpMRh --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 3f12ca1e314a03dfb1c8beadd0c1a180c2d2339dd5f3109d5999df06d52395ab --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 12:27:56,759 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 12:27:56,761 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 12:27:56,784 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 12:27:56,785 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 12:27:56,786 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 12:27:56,787 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 12:27:56,788 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 12:27:56,789 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 12:27:56,789 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 12:27:56,790 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 12:27:56,791 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 12:27:56,791 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 12:27:56,792 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 12:27:56,792 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 12:27:56,793 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 12:27:56,793 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 12:27:56,794 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 12:27:56,795 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 12:27:56,796 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 12:27:56,797 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 12:27:56,798 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 12:27:56,798 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 12:27:56,799 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 12:27:56,801 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 12:27:56,801 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 12:27:56,801 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 12:27:56,802 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 12:27:56,802 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 12:27:56,803 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 12:27:56,803 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 12:27:56,804 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 12:27:56,804 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 12:27:56,805 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 12:27:56,805 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 12:27:56,805 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 12:27:56,806 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 12:27:56,806 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 12:27:56,806 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 12:27:56,807 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 12:27:56,807 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 12:27:56,808 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45995abc-972f-4773-a9cb-6c85dda57de0/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 12:27:56,828 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 12:27:56,828 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 12:27:56,828 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 12:27:56,829 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 12:27:56,829 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 12:27:56,830 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 12:27:56,830 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 12:27:56,830 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 12:27:56,830 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 12:27:56,830 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 12:27:56,831 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 12:27:56,831 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 12:27:56,831 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 12:27:56,831 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 12:27:56,831 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 12:27:56,831 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 12:27:56,832 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 12:27:56,832 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 12:27:56,832 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 12:27:56,832 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 12:27:56,832 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 12:27:56,833 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 12:27:56,833 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 12:27:56,833 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 12:27:56,833 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 12:27:56,833 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 12:27:56,833 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 12:27:56,834 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 12:27:56,834 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 12:27:56,834 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 12:27:56,834 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 12:27:56,834 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 12:27:56,834 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 12:27:56,835 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 12:27:56,835 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 12:27:56,835 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 12:27:56,835 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 12:27:56,835 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 12:27:56,835 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 12:27:56,836 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 12:27:56,836 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 12:27:56,836 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45995abc-972f-4773-a9cb-6c85dda57de0/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45995abc-972f-4773-a9cb-6c85dda57de0/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f12ca1e314a03dfb1c8beadd0c1a180c2d2339dd5f3109d5999df06d52395ab [2022-12-14 12:27:56,997 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 12:27:57,014 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 12:27:57,016 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 12:27:57,017 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 12:27:57,017 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 12:27:57,018 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45995abc-972f-4773-a9cb-6c85dda57de0/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/loops/eureka_05.i [2022-12-14 12:27:59,670 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 12:27:59,807 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 12:27:59,808 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45995abc-972f-4773-a9cb-6c85dda57de0/sv-benchmarks/c/loops/eureka_05.i [2022-12-14 12:27:59,813 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45995abc-972f-4773-a9cb-6c85dda57de0/bin/utaipan-gh47qXpMRh/data/93ebb7b0c/106eb0c9681e4482aa13946ca3b73e2b/FLAGd3bb00aa5 [2022-12-14 12:27:59,825 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45995abc-972f-4773-a9cb-6c85dda57de0/bin/utaipan-gh47qXpMRh/data/93ebb7b0c/106eb0c9681e4482aa13946ca3b73e2b [2022-12-14 12:27:59,828 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 12:27:59,829 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 12:27:59,830 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 12:27:59,830 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 12:27:59,833 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 12:27:59,833 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 12:27:59" (1/1) ... [2022-12-14 12:27:59,834 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@532b974e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:27:59, skipping insertion in model container [2022-12-14 12:27:59,834 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 12:27:59" (1/1) ... [2022-12-14 12:27:59,840 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 12:27:59,853 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 12:27:59,978 WARN L237 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_45995abc-972f-4773-a9cb-6c85dda57de0/sv-benchmarks/c/loops/eureka_05.i[810,823] [2022-12-14 12:27:59,993 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 12:28:00,003 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 12:28:00,014 WARN L237 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_45995abc-972f-4773-a9cb-6c85dda57de0/sv-benchmarks/c/loops/eureka_05.i[810,823] [2022-12-14 12:28:00,021 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 12:28:00,034 INFO L208 MainTranslator]: Completed translation [2022-12-14 12:28:00,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:28:00 WrapperNode [2022-12-14 12:28:00,034 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 12:28:00,035 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 12:28:00,035 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 12:28:00,035 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 12:28:00,040 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:28:00" (1/1) ... [2022-12-14 12:28:00,045 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:28:00" (1/1) ... [2022-12-14 12:28:00,060 INFO L138 Inliner]: procedures = 16, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 84 [2022-12-14 12:28:00,061 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 12:28:00,062 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 12:28:00,062 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 12:28:00,062 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 12:28:00,070 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:28:00" (1/1) ... [2022-12-14 12:28:00,071 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:28:00" (1/1) ... [2022-12-14 12:28:00,072 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:28:00" (1/1) ... [2022-12-14 12:28:00,073 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:28:00" (1/1) ... [2022-12-14 12:28:00,078 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:28:00" (1/1) ... [2022-12-14 12:28:00,082 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:28:00" (1/1) ... [2022-12-14 12:28:00,083 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:28:00" (1/1) ... [2022-12-14 12:28:00,084 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:28:00" (1/1) ... [2022-12-14 12:28:00,085 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 12:28:00,086 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 12:28:00,086 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 12:28:00,087 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 12:28:00,087 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:28:00" (1/1) ... [2022-12-14 12:28:00,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 12:28:00,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45995abc-972f-4773-a9cb-6c85dda57de0/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:28:00,115 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45995abc-972f-4773-a9cb-6c85dda57de0/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 12:28:00,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45995abc-972f-4773-a9cb-6c85dda57de0/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 12:28:00,150 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 12:28:00,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 12:28:00,150 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 12:28:00,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 12:28:00,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 12:28:00,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 12:28:00,151 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 12:28:00,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 12:28:00,211 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 12:28:00,213 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 12:28:00,313 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 12:28:00,343 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 12:28:00,343 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-14 12:28:00,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 12:28:00 BoogieIcfgContainer [2022-12-14 12:28:00,345 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 12:28:00,347 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 12:28:00,347 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 12:28:00,349 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 12:28:00,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 12:27:59" (1/3) ... [2022-12-14 12:28:00,350 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25bca549 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 12:28:00, skipping insertion in model container [2022-12-14 12:28:00,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:28:00" (2/3) ... [2022-12-14 12:28:00,350 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25bca549 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 12:28:00, skipping insertion in model container [2022-12-14 12:28:00,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 12:28:00" (3/3) ... [2022-12-14 12:28:00,351 INFO L112 eAbstractionObserver]: Analyzing ICFG eureka_05.i [2022-12-14 12:28:00,364 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 12:28:00,365 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 12:28:00,396 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 12:28:00,401 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2d196948, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 12:28:00,401 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 12:28:00,404 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.75) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:28:00,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 12:28:00,408 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:28:00,409 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-14 12:28:00,409 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:28:00,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:28:00,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1007146046, now seen corresponding path program 1 times [2022-12-14 12:28:00,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:28:00,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321742982] [2022-12-14 12:28:00,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:28:00,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:28:00,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:28:00,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:28:00,548 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:28:00,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321742982] [2022-12-14 12:28:00,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321742982] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:28:00,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:28:00,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 12:28:00,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807580626] [2022-12-14 12:28:00,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:28:00,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:28:00,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:28:00,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:28:00,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:28:00,580 INFO L87 Difference]: Start difference. First operand has 10 states, 8 states have (on average 1.75) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 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 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:28:00,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:28:00,615 INFO L93 Difference]: Finished difference Result 19 states and 27 transitions. [2022-12-14 12:28:00,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:28:00,618 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2022-12-14 12:28:00,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:28:00,625 INFO L225 Difference]: With dead ends: 19 [2022-12-14 12:28:00,625 INFO L226 Difference]: Without dead ends: 10 [2022-12-14 12:28:00,628 INFO L412 NwaCegarLoop]: 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 [2022-12-14 12:28:00,632 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:28:00,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:28:00,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2022-12-14 12:28:00,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2022-12-14 12:28:00,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:28:00,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2022-12-14 12:28:00,659 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 13 transitions. Word has length 6 [2022-12-14 12:28:00,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:28:00,659 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 13 transitions. [2022-12-14 12:28:00,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:28:00,660 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 13 transitions. [2022-12-14 12:28:00,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 12:28:00,660 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:28:00,660 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:28:00,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 12:28:00,661 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:28:00,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:28:00,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1307114414, now seen corresponding path program 1 times [2022-12-14 12:28:00,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:28:00,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529876483] [2022-12-14 12:28:00,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:28:00,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:28:00,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:28:00,737 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:28:00,737 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:28:00,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529876483] [2022-12-14 12:28:00,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529876483] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:28:00,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931582275] [2022-12-14 12:28:00,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:28:00,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:28:00,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45995abc-972f-4773-a9cb-6c85dda57de0/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:28:00,740 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45995abc-972f-4773-a9cb-6c85dda57de0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:28:00,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45995abc-972f-4773-a9cb-6c85dda57de0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 12:28:00,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:28:00,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 12:28:00,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:28:00,844 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:28:00,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:28:00,862 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:28:00,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [931582275] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:28:00,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [976288921] [2022-12-14 12:28:00,880 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2022-12-14 12:28:00,880 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:28:00,884 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:28:00,889 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:28:00,889 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:28:00,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:00,997 INFO L321 Elim1Store]: treesize reduction 24, result has 38.5 percent of original size [2022-12-14 12:28:00,998 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 34 [2022-12-14 12:28:01,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:01,049 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-12-14 12:28:01,050 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2022-12-14 12:28:01,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:01,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:01,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:01,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:01,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:01,102 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 16 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 88 [2022-12-14 12:28:01,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:01,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:01,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:01,205 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 12:28:01,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:01,279 INFO L321 Elim1Store]: treesize reduction 254, result has 20.6 percent of original size [2022-12-14 12:28:01,280 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 15 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 14 case distinctions, treesize of input 313 treesize of output 303 [2022-12-14 12:28:01,428 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2022-12-14 12:28:01,436 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:28:01,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [976288921] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:28:01,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 12:28:01,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3, 3] total 7 [2022-12-14 12:28:01,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906132583] [2022-12-14 12:28:01,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:28:01,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 12:28:01,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:28:01,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 12:28:01,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-12-14 12:28:01,473 INFO L87 Difference]: Start difference. First operand 10 states and 13 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:28:01,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:28:01,508 INFO L93 Difference]: Finished difference Result 22 states and 27 transitions. [2022-12-14 12:28:01,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 12:28:01,509 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2022-12-14 12:28:01,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:28:01,509 INFO L225 Difference]: With dead ends: 22 [2022-12-14 12:28:01,509 INFO L226 Difference]: Without dead ends: 17 [2022-12-14 12:28:01,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-12-14 12:28:01,511 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 10 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:28:01,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 9 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:28:01,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-12-14 12:28:01,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 11. [2022-12-14 12:28:01,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:28:01,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 14 transitions. [2022-12-14 12:28:01,516 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 14 transitions. Word has length 7 [2022-12-14 12:28:01,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:28:01,517 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 14 transitions. [2022-12-14 12:28:01,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:28:01,517 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 14 transitions. [2022-12-14 12:28:01,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 12:28:01,517 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:28:01,517 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:28:01,522 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45995abc-972f-4773-a9cb-6c85dda57de0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 12:28:01,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45995abc-972f-4773-a9cb-6c85dda57de0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:28:01,719 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:28:01,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:28:01,720 INFO L85 PathProgramCache]: Analyzing trace with hash 314987987, now seen corresponding path program 1 times [2022-12-14 12:28:01,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:28:01,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193130786] [2022-12-14 12:28:01,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:28:01,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:28:01,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:28:01,873 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 12:28:01,874 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:28:01,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193130786] [2022-12-14 12:28:01,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193130786] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:28:01,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506068300] [2022-12-14 12:28:01,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:28:01,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:28:01,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45995abc-972f-4773-a9cb-6c85dda57de0/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:28:01,876 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45995abc-972f-4773-a9cb-6c85dda57de0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:28:01,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45995abc-972f-4773-a9cb-6c85dda57de0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 12:28:01,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:28:01,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 12:28:01,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:28:01,926 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 12:28:01,927 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:28:01,938 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 12:28:01,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [506068300] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:28:01,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1811565450] [2022-12-14 12:28:01,941 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-12-14 12:28:01,941 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:28:01,941 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:28:01,941 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:28:01,941 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:28:01,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:01,974 INFO L321 Elim1Store]: treesize reduction 24, result has 38.5 percent of original size [2022-12-14 12:28:01,975 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 34 [2022-12-14 12:28:01,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:02,008 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-12-14 12:28:02,009 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2022-12-14 12:28:02,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:02,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:02,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:02,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:02,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:02,033 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 16 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 88 [2022-12-14 12:28:02,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:02,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:02,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:02,113 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 12:28:02,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:02,176 INFO L321 Elim1Store]: treesize reduction 254, result has 20.6 percent of original size [2022-12-14 12:28:02,176 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 15 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 14 case distinctions, treesize of input 313 treesize of output 303 [2022-12-14 12:28:02,224 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2022-12-14 12:28:02,237 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 12:28:02,242 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:28:02,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1811565450] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:28:02,307 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 12:28:02,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3, 3, 3] total 8 [2022-12-14 12:28:02,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876976559] [2022-12-14 12:28:02,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:28:02,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 12:28:02,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:28:02,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 12:28:02,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-12-14 12:28:02,310 INFO L87 Difference]: Start difference. First operand 11 states and 14 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:28:02,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:28:02,345 INFO L93 Difference]: Finished difference Result 25 states and 32 transitions. [2022-12-14 12:28:02,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 12:28:02,345 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2022-12-14 12:28:02,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:28:02,346 INFO L225 Difference]: With dead ends: 25 [2022-12-14 12:28:02,346 INFO L226 Difference]: Without dead ends: 18 [2022-12-14 12:28:02,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-12-14 12:28:02,347 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 12 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:28:02,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 12 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:28:02,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-12-14 12:28:02,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 12. [2022-12-14 12:28:02,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:28:02,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 15 transitions. [2022-12-14 12:28:02,350 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 15 transitions. Word has length 9 [2022-12-14 12:28:02,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:28:02,350 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 15 transitions. [2022-12-14 12:28:02,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:28:02,351 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 15 transitions. [2022-12-14 12:28:02,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-14 12:28:02,351 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:28:02,351 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:28:02,355 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45995abc-972f-4773-a9cb-6c85dda57de0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 12:28:02,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45995abc-972f-4773-a9cb-6c85dda57de0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:28:02,553 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:28:02,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:28:02,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1257062237, now seen corresponding path program 1 times [2022-12-14 12:28:02,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:28:02,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571751846] [2022-12-14 12:28:02,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:28:02,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:28:02,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:28:02,703 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 12:28:02,703 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:28:02,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571751846] [2022-12-14 12:28:02,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571751846] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:28:02,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035173244] [2022-12-14 12:28:02,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:28:02,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:28:02,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45995abc-972f-4773-a9cb-6c85dda57de0/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:28:02,707 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45995abc-972f-4773-a9cb-6c85dda57de0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:28:02,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45995abc-972f-4773-a9cb-6c85dda57de0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 12:28:02,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:28:02,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 12:28:02,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:28:02,838 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 12:28:02,838 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:28:02,859 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 12:28:02,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1035173244] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:28:02,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [298560379] [2022-12-14 12:28:02,862 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-12-14 12:28:02,862 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:28:02,862 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:28:02,863 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:28:02,863 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:28:02,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:02,897 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-12-14 12:28:02,898 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2022-12-14 12:28:02,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:02,909 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2022-12-14 12:28:02,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:02,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:02,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:02,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:02,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:02,938 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 16 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 93 [2022-12-14 12:28:02,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:03,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:03,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:03,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:03,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:03,062 INFO L321 Elim1Store]: treesize reduction 297, result has 14.7 percent of original size [2022-12-14 12:28:03,062 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 17 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 13 case distinctions, treesize of input 318 treesize of output 302 [2022-12-14 12:28:03,114 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2022-12-14 12:28:03,169 INFO L321 Elim1Store]: treesize reduction 48, result has 20.0 percent of original size [2022-12-14 12:28:03,170 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 27 [2022-12-14 12:28:03,259 INFO L321 Elim1Store]: treesize reduction 48, result has 20.0 percent of original size [2022-12-14 12:28:03,259 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 27 [2022-12-14 12:28:03,309 INFO L321 Elim1Store]: treesize reduction 48, result has 20.0 percent of original size [2022-12-14 12:28:03,309 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 27 [2022-12-14 12:28:03,340 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:28:03,522 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '334#(and (= |ULTIMATE.start_main_~i~1#1| 0) (= 3 |~#array~0.base|) (<= 0 |ULTIMATE.start_main_~#array~1#1.base|) (= |ULTIMATE.start_main_#t~mem9#1| (select (select |#memory_int| |ULTIMATE.start_main_~#array~1#1.base|) (+ (* |ULTIMATE.start_main_~i~1#1| 4) |ULTIMATE.start_main_~#array~1#1.offset|))) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= ~n~0 |ULTIMATE.start_SelectionSort_~lh~0#1|) (= 5 ~n~0) (= (ite (= |ULTIMATE.start_main_#t~mem9#1| |ULTIMATE.start_main_~i~1#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |~#array~0.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start_main_~#array~1#1.offset| 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 12:28:03,522 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 12:28:03,522 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 12:28:03,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-12-14 12:28:03,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920866386] [2022-12-14 12:28:03,522 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 12:28:03,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 12:28:03,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:28:03,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 12:28:03,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-12-14 12:28:03,524 INFO L87 Difference]: Start difference. First operand 12 states and 15 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:28:03,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:28:03,546 INFO L93 Difference]: Finished difference Result 29 states and 37 transitions. [2022-12-14 12:28:03,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 12:28:03,547 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 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 10 [2022-12-14 12:28:03,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:28:03,547 INFO L225 Difference]: With dead ends: 29 [2022-12-14 12:28:03,547 INFO L226 Difference]: Without dead ends: 20 [2022-12-14 12:28:03,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-12-14 12:28:03,548 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 8 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:28:03,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 17 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:28:03,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-12-14 12:28:03,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 15. [2022-12-14 12:28:03,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:28:03,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2022-12-14 12:28:03,551 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 10 [2022-12-14 12:28:03,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:28:03,551 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 18 transitions. [2022-12-14 12:28:03,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:28:03,551 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2022-12-14 12:28:03,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-14 12:28:03,552 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:28:03,552 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:28:03,556 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45995abc-972f-4773-a9cb-6c85dda57de0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 12:28:03,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45995abc-972f-4773-a9cb-6c85dda57de0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:28:03,753 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:28:03,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:28:03,755 INFO L85 PathProgramCache]: Analyzing trace with hash 168656365, now seen corresponding path program 2 times [2022-12-14 12:28:03,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:28:03,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54350116] [2022-12-14 12:28:03,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:28:03,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:28:03,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:28:03,977 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 12:28:03,977 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:28:03,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54350116] [2022-12-14 12:28:03,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54350116] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:28:03,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159568032] [2022-12-14 12:28:03,978 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 12:28:03,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:28:03,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45995abc-972f-4773-a9cb-6c85dda57de0/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:28:03,979 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45995abc-972f-4773-a9cb-6c85dda57de0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:28:03,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45995abc-972f-4773-a9cb-6c85dda57de0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 12:28:04,020 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-14 12:28:04,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 12:28:04,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 12:28:04,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:28:04,050 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-14 12:28:04,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:28:04,077 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-14 12:28:04,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [159568032] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:28:04,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1896549889] [2022-12-14 12:28:04,079 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-12-14 12:28:04,079 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:28:04,079 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:28:04,079 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:28:04,080 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:28:04,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:04,113 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-12-14 12:28:04,114 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2022-12-14 12:28:04,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:04,125 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2022-12-14 12:28:04,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:04,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:04,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:04,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:04,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:04,145 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 16 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 88 [2022-12-14 12:28:04,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:04,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:04,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:04,202 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 12:28:04,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:04,262 INFO L321 Elim1Store]: treesize reduction 254, result has 20.6 percent of original size [2022-12-14 12:28:04,262 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 15 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 14 case distinctions, treesize of input 313 treesize of output 303 [2022-12-14 12:28:04,335 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2022-12-14 12:28:04,377 INFO L321 Elim1Store]: treesize reduction 48, result has 20.0 percent of original size [2022-12-14 12:28:04,377 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 27 [2022-12-14 12:28:04,448 INFO L321 Elim1Store]: treesize reduction 48, result has 20.0 percent of original size [2022-12-14 12:28:04,448 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 27 [2022-12-14 12:28:04,504 INFO L321 Elim1Store]: treesize reduction 48, result has 20.0 percent of original size [2022-12-14 12:28:04,504 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 27 [2022-12-14 12:28:04,537 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:28:04,726 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '497#(and (= |ULTIMATE.start_main_~i~1#1| 0) (= 3 |~#array~0.base|) (<= 0 |ULTIMATE.start_main_~#array~1#1.base|) (= |ULTIMATE.start_main_#t~mem9#1| (select (select |#memory_int| |ULTIMATE.start_main_~#array~1#1.base|) (+ (* |ULTIMATE.start_main_~i~1#1| 4) |ULTIMATE.start_main_~#array~1#1.offset|))) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= ~n~0 |ULTIMATE.start_SelectionSort_~lh~0#1|) (= 5 ~n~0) (= (ite (= |ULTIMATE.start_main_#t~mem9#1| |ULTIMATE.start_main_~i~1#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |~#array~0.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start_main_~#array~1#1.offset| 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 12:28:04,726 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 12:28:04,726 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 12:28:04,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 10 [2022-12-14 12:28:04,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991409045] [2022-12-14 12:28:04,727 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 12:28:04,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-14 12:28:04,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:28:04,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-14 12:28:04,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-12-14 12:28:04,728 INFO L87 Difference]: Start difference. First operand 15 states and 18 transitions. Second operand has 11 states, 11 states have (on average 2.0) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:28:04,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:28:04,791 INFO L93 Difference]: Finished difference Result 29 states and 41 transitions. [2022-12-14 12:28:04,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 12:28:04,792 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 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 13 [2022-12-14 12:28:04,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:28:04,792 INFO L225 Difference]: With dead ends: 29 [2022-12-14 12:28:04,792 INFO L226 Difference]: Without dead ends: 22 [2022-12-14 12:28:04,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2022-12-14 12:28:04,793 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 22 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:28:04,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 24 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:28:04,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-12-14 12:28:04,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-12-14 12:28:04,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 21 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:28:04,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 28 transitions. [2022-12-14 12:28:04,798 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 28 transitions. Word has length 13 [2022-12-14 12:28:04,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:28:04,798 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 28 transitions. [2022-12-14 12:28:04,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:28:04,798 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 28 transitions. [2022-12-14 12:28:04,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-12-14 12:28:04,799 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:28:04,799 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1] [2022-12-14 12:28:04,803 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45995abc-972f-4773-a9cb-6c85dda57de0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 12:28:04,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45995abc-972f-4773-a9cb-6c85dda57de0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:28:05,001 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:28:05,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:28:05,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1086529146, now seen corresponding path program 3 times [2022-12-14 12:28:05,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:28:05,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899306903] [2022-12-14 12:28:05,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:28:05,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:28:05,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:28:05,161 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 13 proven. 3 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-12-14 12:28:05,161 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:28:05,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899306903] [2022-12-14 12:28:05,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899306903] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:28:05,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570769545] [2022-12-14 12:28:05,162 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 12:28:05,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:28:05,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45995abc-972f-4773-a9cb-6c85dda57de0/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:28:05,163 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45995abc-972f-4773-a9cb-6c85dda57de0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:28:05,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45995abc-972f-4773-a9cb-6c85dda57de0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 12:28:05,218 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 12:28:05,218 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 12:28:05,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 12:28:05,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:28:05,262 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 12:28:05,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:28:05,298 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 12:28:05,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1570769545] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:28:05,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1931569557] [2022-12-14 12:28:05,300 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-12-14 12:28:05,300 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:28:05,300 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:28:05,300 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:28:05,300 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:28:05,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:05,336 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-12-14 12:28:05,337 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2022-12-14 12:28:05,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:05,351 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2022-12-14 12:28:05,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:05,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:05,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:05,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:05,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:05,371 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 16 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 88 [2022-12-14 12:28:05,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:05,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:05,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:05,430 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 12:28:05,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:05,488 INFO L321 Elim1Store]: treesize reduction 254, result has 20.6 percent of original size [2022-12-14 12:28:05,488 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 15 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 14 case distinctions, treesize of input 313 treesize of output 303 [2022-12-14 12:28:05,569 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2022-12-14 12:28:05,609 INFO L321 Elim1Store]: treesize reduction 31, result has 18.4 percent of original size [2022-12-14 12:28:05,610 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 22 [2022-12-14 12:28:05,684 INFO L321 Elim1Store]: treesize reduction 48, result has 20.0 percent of original size [2022-12-14 12:28:05,685 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 27 [2022-12-14 12:28:05,726 INFO L321 Elim1Store]: treesize reduction 48, result has 20.0 percent of original size [2022-12-14 12:28:05,726 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 27 [2022-12-14 12:28:05,755 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:28:05,949 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '728#(and (= |ULTIMATE.start_main_~i~1#1| 0) (= 3 |~#array~0.base|) (<= 0 |ULTIMATE.start_main_~#array~1#1.base|) (= |ULTIMATE.start_main_#t~mem9#1| (select (select |#memory_int| |ULTIMATE.start_main_~#array~1#1.base|) (+ (* |ULTIMATE.start_main_~i~1#1| 4) |ULTIMATE.start_main_~#array~1#1.offset|))) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= ~n~0 |ULTIMATE.start_SelectionSort_~lh~0#1|) (= 5 ~n~0) (= (ite (= |ULTIMATE.start_main_#t~mem9#1| |ULTIMATE.start_main_~i~1#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |~#array~0.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start_main_~#array~1#1.offset| 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 12:28:05,949 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 12:28:05,949 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 12:28:05,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 12 [2022-12-14 12:28:05,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493294176] [2022-12-14 12:28:05,950 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 12:28:05,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-14 12:28:05,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:28:05,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-14 12:28:05,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2022-12-14 12:28:05,951 INFO L87 Difference]: Start difference. First operand 22 states and 28 transitions. Second operand has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:28:06,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:28:06,105 INFO L93 Difference]: Finished difference Result 50 states and 70 transitions. [2022-12-14 12:28:06,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-14 12:28:06,106 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 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 20 [2022-12-14 12:28:06,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:28:06,106 INFO L225 Difference]: With dead ends: 50 [2022-12-14 12:28:06,106 INFO L226 Difference]: Without dead ends: 38 [2022-12-14 12:28:06,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 43 SyntacticMatches, 5 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=174, Invalid=582, Unknown=0, NotChecked=0, Total=756 [2022-12-14 12:28:06,107 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 43 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:28:06,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 48 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:28:06,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-12-14 12:28:06,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 30. [2022-12-14 12:28:06,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 29 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:28:06,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 38 transitions. [2022-12-14 12:28:06,113 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 38 transitions. Word has length 20 [2022-12-14 12:28:06,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:28:06,113 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 38 transitions. [2022-12-14 12:28:06,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:28:06,113 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 38 transitions. [2022-12-14 12:28:06,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-12-14 12:28:06,114 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:28:06,114 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2022-12-14 12:28:06,118 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45995abc-972f-4773-a9cb-6c85dda57de0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 12:28:06,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45995abc-972f-4773-a9cb-6c85dda57de0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:28:06,315 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:28:06,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:28:06,316 INFO L85 PathProgramCache]: Analyzing trace with hash -386742172, now seen corresponding path program 4 times [2022-12-14 12:28:06,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:28:06,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364942883] [2022-12-14 12:28:06,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:28:06,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:28:06,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:28:06,402 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 27 proven. 12 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-12-14 12:28:06,403 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:28:06,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364942883] [2022-12-14 12:28:06,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364942883] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:28:06,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42479642] [2022-12-14 12:28:06,403 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 12:28:06,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:28:06,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45995abc-972f-4773-a9cb-6c85dda57de0/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:28:06,404 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45995abc-972f-4773-a9cb-6c85dda57de0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:28:06,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45995abc-972f-4773-a9cb-6c85dda57de0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 12:28:06,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:28:06,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 12:28:06,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:28:06,482 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-12-14 12:28:06,482 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:28:06,504 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-12-14 12:28:06,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42479642] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:28:06,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1030552518] [2022-12-14 12:28:06,506 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-12-14 12:28:06,506 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:28:06,506 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:28:06,506 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:28:06,506 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:28:06,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:06,530 INFO L321 Elim1Store]: treesize reduction 24, result has 38.5 percent of original size [2022-12-14 12:28:06,531 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 34 [2022-12-14 12:28:06,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:06,555 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-12-14 12:28:06,555 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2022-12-14 12:28:06,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:06,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:06,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:06,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:06,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:06,576 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 16 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 93 [2022-12-14 12:28:06,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:06,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:06,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:06,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:06,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:06,676 INFO L321 Elim1Store]: treesize reduction 297, result has 14.7 percent of original size [2022-12-14 12:28:06,676 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 17 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 13 case distinctions, treesize of input 318 treesize of output 302 [2022-12-14 12:28:06,718 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2022-12-14 12:28:06,752 INFO L321 Elim1Store]: treesize reduction 31, result has 18.4 percent of original size [2022-12-14 12:28:06,752 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 22 [2022-12-14 12:28:06,817 INFO L321 Elim1Store]: treesize reduction 48, result has 20.0 percent of original size [2022-12-14 12:28:06,817 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 27 [2022-12-14 12:28:06,858 INFO L321 Elim1Store]: treesize reduction 48, result has 20.0 percent of original size [2022-12-14 12:28:06,858 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 27 [2022-12-14 12:28:06,888 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:28:07,094 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1050#(and (= |ULTIMATE.start_main_~i~1#1| 0) (= 3 |~#array~0.base|) (<= 0 |ULTIMATE.start_main_~#array~1#1.base|) (= |ULTIMATE.start_main_#t~mem9#1| (select (select |#memory_int| |ULTIMATE.start_main_~#array~1#1.base|) (+ (* |ULTIMATE.start_main_~i~1#1| 4) |ULTIMATE.start_main_~#array~1#1.offset|))) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= ~n~0 |ULTIMATE.start_SelectionSort_~lh~0#1|) (= 5 ~n~0) (= (ite (= |ULTIMATE.start_main_#t~mem9#1| |ULTIMATE.start_main_~i~1#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |~#array~0.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start_main_~#array~1#1.offset| 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 12:28:07,095 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 12:28:07,095 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 12:28:07,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-12-14 12:28:07,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481747909] [2022-12-14 12:28:07,095 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 12:28:07,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-14 12:28:07,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:28:07,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-14 12:28:07,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2022-12-14 12:28:07,096 INFO L87 Difference]: Start difference. First operand 30 states and 38 transitions. Second operand has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:28:07,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:28:07,230 INFO L93 Difference]: Finished difference Result 76 states and 93 transitions. [2022-12-14 12:28:07,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-14 12:28:07,230 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 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 24 [2022-12-14 12:28:07,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:28:07,231 INFO L225 Difference]: With dead ends: 76 [2022-12-14 12:28:07,231 INFO L226 Difference]: Without dead ends: 52 [2022-12-14 12:28:07,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 56 SyntacticMatches, 4 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=148, Invalid=608, Unknown=0, NotChecked=0, Total=756 [2022-12-14 12:28:07,232 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 39 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:28:07,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 84 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:28:07,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-12-14 12:28:07,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 32. [2022-12-14 12:28:07,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 31 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:28:07,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2022-12-14 12:28:07,239 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 24 [2022-12-14 12:28:07,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:28:07,239 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2022-12-14 12:28:07,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:28:07,239 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2022-12-14 12:28:07,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-12-14 12:28:07,239 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:28:07,239 INFO L195 NwaCegarLoop]: trace histogram [7, 5, 4, 4, 1, 1, 1, 1, 1, 1] [2022-12-14 12:28:07,244 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45995abc-972f-4773-a9cb-6c85dda57de0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-14 12:28:07,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45995abc-972f-4773-a9cb-6c85dda57de0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:28:07,441 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:28:07,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:28:07,441 INFO L85 PathProgramCache]: Analyzing trace with hash 412039452, now seen corresponding path program 5 times [2022-12-14 12:28:07,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:28:07,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111005018] [2022-12-14 12:28:07,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:28:07,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:28:07,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:28:07,541 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 30 proven. 19 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-12-14 12:28:07,541 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:28:07,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111005018] [2022-12-14 12:28:07,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111005018] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:28:07,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734946443] [2022-12-14 12:28:07,542 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 12:28:07,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:28:07,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45995abc-972f-4773-a9cb-6c85dda57de0/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:28:07,543 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45995abc-972f-4773-a9cb-6c85dda57de0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:28:07,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45995abc-972f-4773-a9cb-6c85dda57de0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 12:28:07,712 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-12-14 12:28:07,712 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 12:28:07,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 12:28:07,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:28:07,791 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-12-14 12:28:07,792 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:28:07,841 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-12-14 12:28:07,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1734946443] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:28:07,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [475299446] [2022-12-14 12:28:07,843 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-12-14 12:28:07,843 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:28:07,843 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:28:07,843 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:28:07,843 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:28:07,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:07,867 INFO L321 Elim1Store]: treesize reduction 24, result has 38.5 percent of original size [2022-12-14 12:28:07,868 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 34 [2022-12-14 12:28:07,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:07,894 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-12-14 12:28:07,895 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2022-12-14 12:28:07,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:07,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:07,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:07,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:07,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:07,919 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 16 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 88 [2022-12-14 12:28:07,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:07,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:07,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:07,965 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 12:28:07,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:08,013 INFO L321 Elim1Store]: treesize reduction 254, result has 20.6 percent of original size [2022-12-14 12:28:08,013 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 15 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 14 case distinctions, treesize of input 313 treesize of output 303 [2022-12-14 12:28:08,057 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2022-12-14 12:28:08,092 INFO L321 Elim1Store]: treesize reduction 48, result has 20.0 percent of original size [2022-12-14 12:28:08,092 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 27 [2022-12-14 12:28:08,169 INFO L321 Elim1Store]: treesize reduction 48, result has 20.0 percent of original size [2022-12-14 12:28:08,169 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 27 [2022-12-14 12:28:08,210 INFO L321 Elim1Store]: treesize reduction 48, result has 20.0 percent of original size [2022-12-14 12:28:08,210 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 27 [2022-12-14 12:28:08,235 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:28:08,379 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1436#(and (= |ULTIMATE.start_main_~i~1#1| 0) (= 3 |~#array~0.base|) (<= 0 |ULTIMATE.start_main_~#array~1#1.base|) (= |ULTIMATE.start_main_#t~mem9#1| (select (select |#memory_int| |ULTIMATE.start_main_~#array~1#1.base|) (+ (* |ULTIMATE.start_main_~i~1#1| 4) |ULTIMATE.start_main_~#array~1#1.offset|))) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= ~n~0 |ULTIMATE.start_SelectionSort_~lh~0#1|) (= 5 ~n~0) (= (ite (= |ULTIMATE.start_main_#t~mem9#1| |ULTIMATE.start_main_~i~1#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |~#array~0.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start_main_~#array~1#1.offset| 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 12:28:08,379 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 12:28:08,379 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 12:28:08,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2022-12-14 12:28:08,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374708551] [2022-12-14 12:28:08,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 12:28:08,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-14 12:28:08,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:28:08,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-14 12:28:08,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2022-12-14 12:28:08,381 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. Second operand has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:28:08,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:28:08,484 INFO L93 Difference]: Finished difference Result 58 states and 79 transitions. [2022-12-14 12:28:08,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-14 12:28:08,485 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 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 26 [2022-12-14 12:28:08,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:28:08,486 INFO L225 Difference]: With dead ends: 58 [2022-12-14 12:28:08,486 INFO L226 Difference]: Without dead ends: 43 [2022-12-14 12:28:08,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 60 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=281, Invalid=775, Unknown=0, NotChecked=0, Total=1056 [2022-12-14 12:28:08,488 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 21 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:28:08,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 20 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:28:08,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-12-14 12:28:08,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 37. [2022-12-14 12:28:08,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.2777777777777777) internal successors, (46), 36 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:28:08,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 46 transitions. [2022-12-14 12:28:08,499 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 46 transitions. Word has length 26 [2022-12-14 12:28:08,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:28:08,499 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 46 transitions. [2022-12-14 12:28:08,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:28:08,499 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 46 transitions. [2022-12-14 12:28:08,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-12-14 12:28:08,500 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:28:08,500 INFO L195 NwaCegarLoop]: trace histogram [10, 5, 5, 5, 1, 1, 1, 1, 1, 1] [2022-12-14 12:28:08,504 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45995abc-972f-4773-a9cb-6c85dda57de0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-14 12:28:08,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45995abc-972f-4773-a9cb-6c85dda57de0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:28:08,702 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:28:08,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:28:08,703 INFO L85 PathProgramCache]: Analyzing trace with hash 2015253715, now seen corresponding path program 6 times [2022-12-14 12:28:08,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:28:08,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023184683] [2022-12-14 12:28:08,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:28:08,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:28:08,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:28:09,243 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-12-14 12:28:09,243 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:28:09,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023184683] [2022-12-14 12:28:09,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023184683] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:28:09,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1087596746] [2022-12-14 12:28:09,244 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 12:28:09,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:28:09,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45995abc-972f-4773-a9cb-6c85dda57de0/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:28:09,245 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45995abc-972f-4773-a9cb-6c85dda57de0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:28:09,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45995abc-972f-4773-a9cb-6c85dda57de0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-14 12:28:09,462 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 12:28:09,462 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 12:28:09,465 WARN L261 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 114 conjunts are in the unsatisfiable core [2022-12-14 12:28:09,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:28:09,483 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 12:28:09,504 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2022-12-14 12:28:09,530 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 12:28:09,530 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 47 [2022-12-14 12:28:09,567 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 12:28:09,567 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 64 [2022-12-14 12:28:09,621 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 12:28:09,621 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 72 treesize of output 80 [2022-12-14 12:28:10,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:10,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:10,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:10,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:10,933 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 12:28:10,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:10,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:10,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:10,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:10,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:10,938 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 12:28:10,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:10,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:10,940 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 12:28:10,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:10,942 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 12:28:10,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:10,943 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 12:28:11,187 INFO L321 Elim1Store]: treesize reduction 462, result has 31.1 percent of original size [2022-12-14 12:28:11,187 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 10 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 66 case distinctions, treesize of input 812 treesize of output 453 [2022-12-14 12:28:13,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:13,635 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 12:28:13,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:13,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:13,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:13,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:13,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:13,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:13,640 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 12:28:13,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:13,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:13,642 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 12:28:13,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:13,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:13,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:13,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:13,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:13,645 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 12:28:13,646 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 12:28:13,878 INFO L321 Elim1Store]: treesize reduction 432, result has 35.8 percent of original size [2022-12-14 12:28:13,879 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 10 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 66 case distinctions, treesize of input 485 treesize of output 390 [2022-12-14 12:28:18,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:18,378 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 12:28:18,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:18,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:18,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:18,381 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 12:28:18,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:18,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:18,385 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 12:28:18,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:28:32,110 WARN L233 SmtUtils]: Spent 13.72s on a formula simplification. DAG size of input: 1362 DAG size of output: 493 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-12-14 12:28:32,112 INFO L321 Elim1Store]: treesize reduction 5216, result has 29.7 percent of original size [2022-12-14 12:28:32,113 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 27 select indices, 27 select index equivalence classes, 6 disjoint index pairs (out of 351 index pairs), introduced 27 new quantified variables, introduced 379 case distinctions, treesize of input 670 treesize of output 2474