./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 e04fb08f 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_cb226649-2b1e-495d-bdde-cec2c576fe6f/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb226649-2b1e-495d-bdde-cec2c576fe6f/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb226649-2b1e-495d-bdde-cec2c576fe6f/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb226649-2b1e-495d-bdde-cec2c576fe6f/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/eureka_05.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb226649-2b1e-495d-bdde-cec2c576fe6f/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb226649-2b1e-495d-bdde-cec2c576fe6f/bin/utaipan-Xvt2sAort0 --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-e04fb08 [2022-11-16 19:42:53,686 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 19:42:53,689 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 19:42:53,716 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 19:42:53,717 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 19:42:53,718 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 19:42:53,720 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 19:42:53,722 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 19:42:53,725 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 19:42:53,726 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 19:42:53,727 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 19:42:53,729 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 19:42:53,729 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 19:42:53,731 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 19:42:53,732 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 19:42:53,734 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 19:42:53,735 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 19:42:53,737 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 19:42:53,739 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 19:42:53,742 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 19:42:53,744 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 19:42:53,745 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 19:42:53,747 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 19:42:53,748 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 19:42:53,753 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 19:42:53,754 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 19:42:53,754 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 19:42:53,756 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 19:42:53,756 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 19:42:53,758 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 19:42:53,758 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 19:42:53,759 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 19:42:53,761 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 19:42:53,762 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 19:42:53,763 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 19:42:53,763 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 19:42:53,764 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 19:42:53,765 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 19:42:53,765 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 19:42:53,767 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 19:42:53,767 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 19:42:53,771 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb226649-2b1e-495d-bdde-cec2c576fe6f/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-16 19:42:53,813 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 19:42:53,821 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 19:42:53,822 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 19:42:53,823 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 19:42:53,824 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 19:42:53,824 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 19:42:53,824 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 19:42:53,825 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 19:42:53,825 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 19:42:53,825 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 19:42:53,826 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 19:42:53,827 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 19:42:53,827 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 19:42:53,827 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 19:42:53,827 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 19:42:53,828 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 19:42:53,828 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 19:42:53,828 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 19:42:53,829 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 19:42:53,829 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 19:42:53,829 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 19:42:53,830 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 19:42:53,830 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 19:42:53,830 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 19:42:53,830 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 19:42:53,831 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 19:42:53,831 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 19:42:53,831 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 19:42:53,831 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 19:42:53,832 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 19:42:53,832 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 19:42:53,832 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 19:42:53,833 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 19:42:53,833 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 19:42:53,833 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 19:42:53,833 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 19:42:53,834 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 19:42:53,834 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 19:42:53,834 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 19:42:53,834 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 19:42:53,835 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 19:42:53,835 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_cb226649-2b1e-495d-bdde-cec2c576fe6f/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb226649-2b1e-495d-bdde-cec2c576fe6f/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f12ca1e314a03dfb1c8beadd0c1a180c2d2339dd5f3109d5999df06d52395ab [2022-11-16 19:42:54,130 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 19:42:54,156 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 19:42:54,159 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 19:42:54,161 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 19:42:54,162 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 19:42:54,164 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb226649-2b1e-495d-bdde-cec2c576fe6f/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/loops/eureka_05.i [2022-11-16 19:42:54,241 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb226649-2b1e-495d-bdde-cec2c576fe6f/bin/utaipan-Xvt2sAort0/data/0c466b07a/3995c3219182444cba8292c29b940a8c/FLAGd0a48ea74 [2022-11-16 19:42:54,782 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 19:42:54,783 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb226649-2b1e-495d-bdde-cec2c576fe6f/sv-benchmarks/c/loops/eureka_05.i [2022-11-16 19:42:54,802 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb226649-2b1e-495d-bdde-cec2c576fe6f/bin/utaipan-Xvt2sAort0/data/0c466b07a/3995c3219182444cba8292c29b940a8c/FLAGd0a48ea74 [2022-11-16 19:42:55,132 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb226649-2b1e-495d-bdde-cec2c576fe6f/bin/utaipan-Xvt2sAort0/data/0c466b07a/3995c3219182444cba8292c29b940a8c [2022-11-16 19:42:55,139 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 19:42:55,142 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 19:42:55,147 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 19:42:55,148 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 19:42:55,152 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 19:42:55,153 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:42:55" (1/1) ... [2022-11-16 19:42:55,156 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a05e4bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:42:55, skipping insertion in model container [2022-11-16 19:42:55,157 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:42:55" (1/1) ... [2022-11-16 19:42:55,166 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 19:42:55,189 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 19:42:55,400 WARN L229 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_cb226649-2b1e-495d-bdde-cec2c576fe6f/sv-benchmarks/c/loops/eureka_05.i[810,823] [2022-11-16 19:42:55,417 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 19:42:55,427 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 19:42:55,439 WARN L229 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_cb226649-2b1e-495d-bdde-cec2c576fe6f/sv-benchmarks/c/loops/eureka_05.i[810,823] [2022-11-16 19:42:55,447 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 19:42:55,462 INFO L208 MainTranslator]: Completed translation [2022-11-16 19:42:55,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:42:55 WrapperNode [2022-11-16 19:42:55,463 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 19:42:55,464 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 19:42:55,464 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 19:42:55,464 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 19:42:55,472 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:42:55" (1/1) ... [2022-11-16 19:42:55,480 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:42:55" (1/1) ... [2022-11-16 19:42:55,501 INFO L138 Inliner]: procedures = 16, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 84 [2022-11-16 19:42:55,501 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 19:42:55,502 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 19:42:55,502 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 19:42:55,502 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 19:42:55,512 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:42:55" (1/1) ... [2022-11-16 19:42:55,512 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:42:55" (1/1) ... [2022-11-16 19:42:55,514 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:42:55" (1/1) ... [2022-11-16 19:42:55,514 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:42:55" (1/1) ... [2022-11-16 19:42:55,520 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:42:55" (1/1) ... [2022-11-16 19:42:55,524 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:42:55" (1/1) ... [2022-11-16 19:42:55,526 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:42:55" (1/1) ... [2022-11-16 19:42:55,527 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:42:55" (1/1) ... [2022-11-16 19:42:55,528 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 19:42:55,529 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 19:42:55,530 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 19:42:55,530 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 19:42:55,531 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:42:55" (1/1) ... [2022-11-16 19:42:55,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 19:42:55,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb226649-2b1e-495d-bdde-cec2c576fe6f/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:42:55,579 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb226649-2b1e-495d-bdde-cec2c576fe6f/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 19:42:55,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb226649-2b1e-495d-bdde-cec2c576fe6f/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 19:42:55,623 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 19:42:55,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 19:42:55,624 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 19:42:55,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 19:42:55,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 19:42:55,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 19:42:55,624 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 19:42:55,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 19:42:55,704 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 19:42:55,706 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 19:42:55,990 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 19:42:56,084 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 19:42:56,085 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-16 19:42:56,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 07:42:56 BoogieIcfgContainer [2022-11-16 19:42:56,104 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 19:42:56,107 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 19:42:56,107 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 19:42:56,111 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 19:42:56,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 07:42:55" (1/3) ... [2022-11-16 19:42:56,112 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@636391b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:42:56, skipping insertion in model container [2022-11-16 19:42:56,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:42:55" (2/3) ... [2022-11-16 19:42:56,112 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@636391b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:42:56, skipping insertion in model container [2022-11-16 19:42:56,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 07:42:56" (3/3) ... [2022-11-16 19:42:56,114 INFO L112 eAbstractionObserver]: Analyzing ICFG eureka_05.i [2022-11-16 19:42:56,152 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 19:42:56,165 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 19:42:56,259 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 19:42:56,274 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;@7e3857b7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 19:42:56,274 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 19:42:56,279 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) [2022-11-16 19:42:56,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-16 19:42:56,288 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:42:56,289 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-16 19:42:56,290 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:42:56,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:42:56,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1007146046, now seen corresponding path program 1 times [2022-11-16 19:42:56,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:42:56,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997911232] [2022-11-16 19:42:56,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:42:56,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:42:56,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:42:56,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:42:56,630 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:42:56,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997911232] [2022-11-16 19:42:56,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997911232] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:42:56,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:42:56,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 19:42:56,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263402438] [2022-11-16 19:42:56,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:42:56,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 19:42:56,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:42:56,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 19:42:56,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 19:42:56,694 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) [2022-11-16 19:42:56,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:42:56,788 INFO L93 Difference]: Finished difference Result 19 states and 27 transitions. [2022-11-16 19:42:56,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 19:42:56,791 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 [2022-11-16 19:42:56,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:42:56,801 INFO L225 Difference]: With dead ends: 19 [2022-11-16 19:42:56,802 INFO L226 Difference]: Without dead ends: 10 [2022-11-16 19:42:56,809 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 [2022-11-16 19:42:56,822 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 19:42:56,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 19:42:56,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2022-11-16 19:42:56,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2022-11-16 19:42:56,879 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) [2022-11-16 19:42:56,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2022-11-16 19:42:56,882 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 13 transitions. Word has length 6 [2022-11-16 19:42:56,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:42:56,883 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 13 transitions. [2022-11-16 19:42:56,884 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) [2022-11-16 19:42:56,884 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 13 transitions. [2022-11-16 19:42:56,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-16 19:42:56,885 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:42:56,886 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:42:56,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 19:42:56,887 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:42:56,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:42:56,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1307114414, now seen corresponding path program 1 times [2022-11-16 19:42:56,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:42:56,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860872907] [2022-11-16 19:42:56,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:42:56,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:42:56,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:42:56,995 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:42:56,996 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:42:56,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860872907] [2022-11-16 19:42:56,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860872907] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 19:42:56,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363229155] [2022-11-16 19:42:56,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:42:56,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:42:56,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb226649-2b1e-495d-bdde-cec2c576fe6f/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:42:57,001 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb226649-2b1e-495d-bdde-cec2c576fe6f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:42:57,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb226649-2b1e-495d-bdde-cec2c576fe6f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 19:42:57,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:42:57,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 19:42:57,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:42:57,134 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:42:57,134 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:42:57,160 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:42:57,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1363229155] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:42:57,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1965142176] [2022-11-16 19:42:57,181 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2022-11-16 19:42:57,181 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 19:42:57,185 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 19:42:57,214 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 19:42:57,215 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 19:42:57,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:42:57,425 INFO L321 Elim1Store]: treesize reduction 24, result has 38.5 percent of original size [2022-11-16 19:42:57,426 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 [2022-11-16 19:42:57,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:42:57,496 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-16 19:42:57,499 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 [2022-11-16 19:42:57,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:42:57,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:42:57,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:42:57,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:42:57,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:42:57,618 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 [2022-11-16 19:42:57,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:42:57,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:42:57,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:42:57,824 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:42:57,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:42:57,930 INFO L321 Elim1Store]: treesize reduction 254, result has 20.6 percent of original size [2022-11-16 19:42:57,931 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 [2022-11-16 19:42:58,255 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 [2022-11-16 19:42:58,273 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 19:42:58,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1965142176] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:42:58,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-16 19:42:58,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3, 3] total 7 [2022-11-16 19:42:58,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870748468] [2022-11-16 19:42:58,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:42:58,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 19:42:58,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:42:58,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 19:42:58,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-16 19:42:58,345 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) [2022-11-16 19:42:58,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:42:58,396 INFO L93 Difference]: Finished difference Result 22 states and 27 transitions. [2022-11-16 19:42:58,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 19:42:58,397 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 [2022-11-16 19:42:58,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:42:58,398 INFO L225 Difference]: With dead ends: 22 [2022-11-16 19:42:58,398 INFO L226 Difference]: Without dead ends: 17 [2022-11-16 19:42:58,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-16 19:42:58,401 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 11 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 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 [2022-11-16 19:42:58,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 9 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 19:42:58,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-16 19:42:58,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 11. [2022-11-16 19:42:58,418 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) [2022-11-16 19:42:58,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 14 transitions. [2022-11-16 19:42:58,420 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 14 transitions. Word has length 7 [2022-11-16 19:42:58,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:42:58,420 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 14 transitions. [2022-11-16 19:42:58,420 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) [2022-11-16 19:42:58,421 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 14 transitions. [2022-11-16 19:42:58,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-16 19:42:58,422 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:42:58,422 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:42:58,434 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb226649-2b1e-495d-bdde-cec2c576fe6f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 19:42:58,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb226649-2b1e-495d-bdde-cec2c576fe6f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:42:58,629 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:42:58,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:42:58,629 INFO L85 PathProgramCache]: Analyzing trace with hash 314987987, now seen corresponding path program 1 times [2022-11-16 19:42:58,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:42:58,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935702157] [2022-11-16 19:42:58,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:42:58,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:42:58,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:42:58,718 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 19:42:58,718 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:42:58,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935702157] [2022-11-16 19:42:58,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935702157] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 19:42:58,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23503438] [2022-11-16 19:42:58,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:42:58,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:42:58,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb226649-2b1e-495d-bdde-cec2c576fe6f/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:42:58,721 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb226649-2b1e-495d-bdde-cec2c576fe6f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:42:58,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb226649-2b1e-495d-bdde-cec2c576fe6f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 19:42:58,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:42:58,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 19:42:58,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:42:58,835 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 19:42:58,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:42:58,856 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 19:42:58,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23503438] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:42:58,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1164770362] [2022-11-16 19:42:58,872 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-16 19:42:58,872 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 19:42:58,872 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 19:42:58,873 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 19:42:58,873 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 19:42:58,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:42:58,937 INFO L321 Elim1Store]: treesize reduction 24, result has 38.5 percent of original size [2022-11-16 19:42:58,937 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 [2022-11-16 19:42:58,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:42:59,022 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-16 19:42:59,022 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 [2022-11-16 19:42:59,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:42:59,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:42:59,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:42:59,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:42:59,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:42:59,078 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 [2022-11-16 19:42:59,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:42:59,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:42:59,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:42:59,252 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:42:59,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:42:59,362 INFO L321 Elim1Store]: treesize reduction 254, result has 20.6 percent of original size [2022-11-16 19:42:59,363 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 [2022-11-16 19:42:59,468 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 [2022-11-16 19:42:59,495 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-16 19:42:59,503 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 19:42:59,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1164770362] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:42:59,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-16 19:42:59,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3, 3, 3] total 8 [2022-11-16 19:42:59,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199491883] [2022-11-16 19:42:59,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:42:59,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 19:42:59,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:42:59,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 19:42:59,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-16 19:42:59,634 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) [2022-11-16 19:42:59,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:42:59,706 INFO L93 Difference]: Finished difference Result 25 states and 32 transitions. [2022-11-16 19:42:59,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 19:42:59,710 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 [2022-11-16 19:42:59,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:42:59,711 INFO L225 Difference]: With dead ends: 25 [2022-11-16 19:42:59,711 INFO L226 Difference]: Without dead ends: 18 [2022-11-16 19:42:59,711 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 [2022-11-16 19:42:59,713 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 15 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 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, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 19:42:59,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 12 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 19:42:59,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-11-16 19:42:59,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 12. [2022-11-16 19:42:59,742 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) [2022-11-16 19:42:59,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 15 transitions. [2022-11-16 19:42:59,744 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 15 transitions. Word has length 9 [2022-11-16 19:42:59,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:42:59,744 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 15 transitions. [2022-11-16 19:42:59,745 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) [2022-11-16 19:42:59,747 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 15 transitions. [2022-11-16 19:42:59,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-16 19:42:59,748 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:42:59,748 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:42:59,754 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb226649-2b1e-495d-bdde-cec2c576fe6f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 19:42:59,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb226649-2b1e-495d-bdde-cec2c576fe6f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:42:59,954 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:42:59,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:42:59,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1257062237, now seen corresponding path program 1 times [2022-11-16 19:42:59,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:42:59,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737527454] [2022-11-16 19:42:59,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:42:59,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:42:59,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:43:00,081 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 19:43:00,081 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:43:00,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737527454] [2022-11-16 19:43:00,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737527454] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 19:43:00,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565684491] [2022-11-16 19:43:00,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:43:00,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:43:00,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb226649-2b1e-495d-bdde-cec2c576fe6f/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:43:00,084 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb226649-2b1e-495d-bdde-cec2c576fe6f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:43:00,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb226649-2b1e-495d-bdde-cec2c576fe6f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 19:43:00,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:43:00,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 19:43:00,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:43:00,173 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 19:43:00,174 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:43:00,201 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 19:43:00,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [565684491] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:43:00,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2136962243] [2022-11-16 19:43:00,208 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-16 19:43:00,208 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 19:43:00,209 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 19:43:00,209 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 19:43:00,209 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 19:43:00,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:43:00,300 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-16 19:43:00,300 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 [2022-11-16 19:43:00,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:43:00,329 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 [2022-11-16 19:43:00,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:43:00,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:43:00,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:43:00,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:43:00,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:43:00,375 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 [2022-11-16 19:43:00,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:43:00,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:43:00,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:43:00,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:43:00,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:43:00,580 INFO L321 Elim1Store]: treesize reduction 297, result has 14.7 percent of original size [2022-11-16 19:43:00,581 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 [2022-11-16 19:43:00,665 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 [2022-11-16 19:43:00,797 INFO L321 Elim1Store]: treesize reduction 48, result has 20.0 percent of original size [2022-11-16 19:43:00,798 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 [2022-11-16 19:43:00,963 INFO L321 Elim1Store]: treesize reduction 48, result has 20.0 percent of original size [2022-11-16 19:43:00,963 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 [2022-11-16 19:43:01,045 INFO L321 Elim1Store]: treesize reduction 48, result has 20.0 percent of original size [2022-11-16 19:43:01,046 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 [2022-11-16 19:43:01,104 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 19:43:01,463 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 [2022-11-16 19:43:01,464 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 19:43:01,464 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 19:43:01,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-11-16 19:43:01,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112627945] [2022-11-16 19:43:01,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 19:43:01,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 19:43:01,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:43:01,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 19:43:01,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-11-16 19:43:01,467 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) [2022-11-16 19:43:01,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:43:01,529 INFO L93 Difference]: Finished difference Result 29 states and 37 transitions. [2022-11-16 19:43:01,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 19:43:01,530 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 [2022-11-16 19:43:01,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:43:01,531 INFO L225 Difference]: With dead ends: 29 [2022-11-16 19:43:01,531 INFO L226 Difference]: Without dead ends: 20 [2022-11-16 19:43:01,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-11-16 19:43:01,539 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 8 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 19:43:01,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 17 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 19:43:01,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-16 19:43:01,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 15. [2022-11-16 19:43:01,545 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) [2022-11-16 19:43:01,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2022-11-16 19:43:01,549 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 10 [2022-11-16 19:43:01,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:43:01,549 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 18 transitions. [2022-11-16 19:43:01,550 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) [2022-11-16 19:43:01,550 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2022-11-16 19:43:01,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-16 19:43:01,550 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:43:01,551 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:43:01,562 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb226649-2b1e-495d-bdde-cec2c576fe6f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 19:43:01,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb226649-2b1e-495d-bdde-cec2c576fe6f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:43:01,757 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:43:01,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:43:01,757 INFO L85 PathProgramCache]: Analyzing trace with hash 168656365, now seen corresponding path program 2 times [2022-11-16 19:43:01,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:43:01,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081846040] [2022-11-16 19:43:01,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:43:01,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:43:01,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:43:01,992 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 19:43:01,993 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:43:01,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081846040] [2022-11-16 19:43:01,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081846040] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 19:43:01,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208029196] [2022-11-16 19:43:01,993 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 19:43:01,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:43:01,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb226649-2b1e-495d-bdde-cec2c576fe6f/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:43:01,995 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb226649-2b1e-495d-bdde-cec2c576fe6f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:43:02,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb226649-2b1e-495d-bdde-cec2c576fe6f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 19:43:02,063 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-16 19:43:02,063 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 19:43:02,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 19:43:02,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:43:02,116 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-16 19:43:02,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:43:02,162 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-16 19:43:02,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1208029196] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:43:02,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1025860457] [2022-11-16 19:43:02,164 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-16 19:43:02,165 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 19:43:02,165 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 19:43:02,165 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 19:43:02,165 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 19:43:02,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:43:02,215 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-16 19:43:02,215 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 [2022-11-16 19:43:02,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:43:02,234 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 [2022-11-16 19:43:02,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:43:02,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:43:02,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:43:02,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:43:02,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:43:02,264 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 [2022-11-16 19:43:02,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:43:02,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:43:02,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:43:02,352 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:43:02,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:43:02,437 INFO L321 Elim1Store]: treesize reduction 254, result has 20.6 percent of original size [2022-11-16 19:43:02,437 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 [2022-11-16 19:43:02,547 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 [2022-11-16 19:43:02,640 INFO L321 Elim1Store]: treesize reduction 48, result has 20.0 percent of original size [2022-11-16 19:43:02,641 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 [2022-11-16 19:43:02,776 INFO L321 Elim1Store]: treesize reduction 48, result has 20.0 percent of original size [2022-11-16 19:43:02,777 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 [2022-11-16 19:43:02,849 INFO L321 Elim1Store]: treesize reduction 48, result has 20.0 percent of original size [2022-11-16 19:43:02,850 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 [2022-11-16 19:43:02,897 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 19:43:03,215 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 [2022-11-16 19:43:03,215 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 19:43:03,215 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 19:43:03,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 10 [2022-11-16 19:43:03,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717683801] [2022-11-16 19:43:03,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 19:43:03,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 19:43:03,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:43:03,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 19:43:03,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-16 19:43:03,217 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) [2022-11-16 19:43:03,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:43:03,341 INFO L93 Difference]: Finished difference Result 29 states and 41 transitions. [2022-11-16 19:43:03,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 19:43:03,342 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 [2022-11-16 19:43:03,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:43:03,343 INFO L225 Difference]: With dead ends: 29 [2022-11-16 19:43:03,343 INFO L226 Difference]: Without dead ends: 22 [2022-11-16 19:43:03,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2022-11-16 19:43:03,345 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 27 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 19:43:03,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 24 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 19:43:03,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-11-16 19:43:03,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-11-16 19:43:03,355 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) [2022-11-16 19:43:03,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 28 transitions. [2022-11-16 19:43:03,356 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 28 transitions. Word has length 13 [2022-11-16 19:43:03,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:43:03,356 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 28 transitions. [2022-11-16 19:43:03,356 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) [2022-11-16 19:43:03,356 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 28 transitions. [2022-11-16 19:43:03,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-16 19:43:03,357 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:43:03,357 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1] [2022-11-16 19:43:03,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb226649-2b1e-495d-bdde-cec2c576fe6f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 19:43:03,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb226649-2b1e-495d-bdde-cec2c576fe6f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:43:03,564 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:43:03,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:43:03,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1086529146, now seen corresponding path program 3 times [2022-11-16 19:43:03,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:43:03,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988433570] [2022-11-16 19:43:03,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:43:03,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:43:03,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:43:03,710 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 13 proven. 3 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-16 19:43:03,710 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:43:03,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988433570] [2022-11-16 19:43:03,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988433570] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 19:43:03,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933878513] [2022-11-16 19:43:03,711 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 19:43:03,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:43:03,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb226649-2b1e-495d-bdde-cec2c576fe6f/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:43:03,712 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb226649-2b1e-495d-bdde-cec2c576fe6f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:43:03,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb226649-2b1e-495d-bdde-cec2c576fe6f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 19:43:03,812 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 19:43:03,812 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 19:43:03,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 19:43:03,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:43:03,872 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-16 19:43:03,872 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:43:03,927 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-16 19:43:03,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933878513] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:43:03,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1124253899] [2022-11-16 19:43:03,930 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-16 19:43:03,930 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 19:43:03,930 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 19:43:03,931 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 19:43:03,931 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 19:43:03,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:43:03,975 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-16 19:43:03,976 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 [2022-11-16 19:43:03,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:43:03,990 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 [2022-11-16 19:43:04,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:43:04,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:43:04,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:43:04,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:43:04,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:43:04,024 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 [2022-11-16 19:43:04,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:43:04,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:43:04,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:43:04,130 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:43:04,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:43:04,211 INFO L321 Elim1Store]: treesize reduction 254, result has 20.6 percent of original size [2022-11-16 19:43:04,212 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 [2022-11-16 19:43:04,316 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 [2022-11-16 19:43:04,368 INFO L321 Elim1Store]: treesize reduction 31, result has 18.4 percent of original size [2022-11-16 19:43:04,369 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 [2022-11-16 19:43:04,515 INFO L321 Elim1Store]: treesize reduction 48, result has 20.0 percent of original size [2022-11-16 19:43:04,515 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 [2022-11-16 19:43:04,582 INFO L321 Elim1Store]: treesize reduction 48, result has 20.0 percent of original size [2022-11-16 19:43:04,583 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 [2022-11-16 19:43:04,632 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 19:43:04,945 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 [2022-11-16 19:43:04,945 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 19:43:04,945 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 19:43:04,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 12 [2022-11-16 19:43:04,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100738090] [2022-11-16 19:43:04,946 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 19:43:04,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 19:43:04,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:43:04,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 19:43:04,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2022-11-16 19:43:04,947 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) [2022-11-16 19:43:05,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:43:05,278 INFO L93 Difference]: Finished difference Result 50 states and 70 transitions. [2022-11-16 19:43:05,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 19:43:05,279 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 [2022-11-16 19:43:05,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:43:05,280 INFO L225 Difference]: With dead ends: 50 [2022-11-16 19:43:05,280 INFO L226 Difference]: Without dead ends: 38 [2022-11-16 19:43:05,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 43 SyntacticMatches, 5 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=174, Invalid=582, Unknown=0, NotChecked=0, Total=756 [2022-11-16 19:43:05,282 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 50 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 19:43:05,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 48 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 19:43:05,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-11-16 19:43:05,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 30. [2022-11-16 19:43:05,296 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) [2022-11-16 19:43:05,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 38 transitions. [2022-11-16 19:43:05,298 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 38 transitions. Word has length 20 [2022-11-16 19:43:05,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:43:05,298 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 38 transitions. [2022-11-16 19:43:05,298 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) [2022-11-16 19:43:05,298 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 38 transitions. [2022-11-16 19:43:05,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-16 19:43:05,299 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:43:05,299 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2022-11-16 19:43:05,306 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb226649-2b1e-495d-bdde-cec2c576fe6f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 19:43:05,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb226649-2b1e-495d-bdde-cec2c576fe6f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:43:05,506 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:43:05,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:43:05,506 INFO L85 PathProgramCache]: Analyzing trace with hash -386742172, now seen corresponding path program 4 times [2022-11-16 19:43:05,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:43:05,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736050192] [2022-11-16 19:43:05,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:43:05,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:43:05,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:43:05,743 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 27 proven. 12 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-16 19:43:05,743 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:43:05,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736050192] [2022-11-16 19:43:05,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736050192] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 19:43:05,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2000719634] [2022-11-16 19:43:05,744 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-16 19:43:05,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:43:05,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb226649-2b1e-495d-bdde-cec2c576fe6f/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:43:05,745 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb226649-2b1e-495d-bdde-cec2c576fe6f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:43:05,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb226649-2b1e-495d-bdde-cec2c576fe6f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 19:43:05,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:43:05,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 19:43:05,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:43:05,924 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-16 19:43:05,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:43:05,976 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-16 19:43:05,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2000719634] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:43:05,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1451282390] [2022-11-16 19:43:05,979 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-16 19:43:05,979 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 19:43:05,980 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 19:43:05,980 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 19:43:05,980 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 19:43:06,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:43:06,048 INFO L321 Elim1Store]: treesize reduction 24, result has 38.5 percent of original size [2022-11-16 19:43:06,049 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 [2022-11-16 19:43:06,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:43:06,102 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-16 19:43:06,102 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 [2022-11-16 19:43:06,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:43:06,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:43:06,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:43:06,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:43:06,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:43:06,138 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 [2022-11-16 19:43:06,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:43:06,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:43:06,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:43:06,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:43:06,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:43:06,311 INFO L321 Elim1Store]: treesize reduction 297, result has 14.7 percent of original size [2022-11-16 19:43:06,311 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 [2022-11-16 19:43:06,380 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 [2022-11-16 19:43:06,432 INFO L321 Elim1Store]: treesize reduction 31, result has 18.4 percent of original size [2022-11-16 19:43:06,433 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 [2022-11-16 19:43:06,539 INFO L321 Elim1Store]: treesize reduction 48, result has 20.0 percent of original size [2022-11-16 19:43:06,539 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 [2022-11-16 19:43:06,631 INFO L321 Elim1Store]: treesize reduction 48, result has 20.0 percent of original size [2022-11-16 19:43:06,632 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 [2022-11-16 19:43:06,684 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 19:43:07,010 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 [2022-11-16 19:43:07,010 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 19:43:07,010 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 19:43:07,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-11-16 19:43:07,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692034356] [2022-11-16 19:43:07,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 19:43:07,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 19:43:07,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:43:07,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 19:43:07,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2022-11-16 19:43:07,012 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) [2022-11-16 19:43:07,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:43:07,261 INFO L93 Difference]: Finished difference Result 76 states and 93 transitions. [2022-11-16 19:43:07,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 19:43:07,262 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 [2022-11-16 19:43:07,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:43:07,262 INFO L225 Difference]: With dead ends: 76 [2022-11-16 19:43:07,262 INFO L226 Difference]: Without dead ends: 52 [2022-11-16 19:43:07,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 56 SyntacticMatches, 4 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=148, Invalid=608, Unknown=0, NotChecked=0, Total=756 [2022-11-16 19:43:07,264 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 48 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 19:43:07,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 84 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 19:43:07,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-11-16 19:43:07,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 32. [2022-11-16 19:43:07,279 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) [2022-11-16 19:43:07,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2022-11-16 19:43:07,280 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 24 [2022-11-16 19:43:07,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:43:07,280 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2022-11-16 19:43:07,280 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) [2022-11-16 19:43:07,281 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2022-11-16 19:43:07,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-16 19:43:07,281 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:43:07,282 INFO L195 NwaCegarLoop]: trace histogram [7, 5, 4, 4, 1, 1, 1, 1, 1, 1] [2022-11-16 19:43:07,293 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb226649-2b1e-495d-bdde-cec2c576fe6f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 19:43:07,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb226649-2b1e-495d-bdde-cec2c576fe6f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:43:07,488 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:43:07,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:43:07,489 INFO L85 PathProgramCache]: Analyzing trace with hash 412039452, now seen corresponding path program 5 times [2022-11-16 19:43:07,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:43:07,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219421504] [2022-11-16 19:43:07,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:43:07,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:43:07,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:43:07,630 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 30 proven. 19 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-16 19:43:07,631 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:43:07,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219421504] [2022-11-16 19:43:07,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219421504] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 19:43:07,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42202402] [2022-11-16 19:43:07,632 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 19:43:07,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:43:07,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb226649-2b1e-495d-bdde-cec2c576fe6f/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:43:07,634 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb226649-2b1e-495d-bdde-cec2c576fe6f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:43:07,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb226649-2b1e-495d-bdde-cec2c576fe6f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 19:43:07,904 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-11-16 19:43:07,904 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 19:43:07,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 19:43:07,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:43:08,063 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-16 19:43:08,063 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:43:08,166 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-16 19:43:08,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42202402] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:43:08,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1400283593] [2022-11-16 19:43:08,168 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-16 19:43:08,169 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 19:43:08,169 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 19:43:08,169 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 19:43:08,170 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 19:43:08,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:43:08,212 INFO L321 Elim1Store]: treesize reduction 24, result has 38.5 percent of original size [2022-11-16 19:43:08,213 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 [2022-11-16 19:43:08,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:43:08,262 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-16 19:43:08,263 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 [2022-11-16 19:43:08,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:43:08,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:43:08,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:43:08,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:43:08,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:43:08,328 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 [2022-11-16 19:43:08,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:43:08,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:43:08,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:43:08,422 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:43:08,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:43:08,516 INFO L321 Elim1Store]: treesize reduction 254, result has 20.6 percent of original size [2022-11-16 19:43:08,517 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 [2022-11-16 19:43:08,602 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 [2022-11-16 19:43:08,665 INFO L321 Elim1Store]: treesize reduction 48, result has 20.0 percent of original size [2022-11-16 19:43:08,665 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 [2022-11-16 19:43:08,817 INFO L321 Elim1Store]: treesize reduction 48, result has 20.0 percent of original size [2022-11-16 19:43:08,818 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 [2022-11-16 19:43:08,895 INFO L321 Elim1Store]: treesize reduction 48, result has 20.0 percent of original size [2022-11-16 19:43:08,895 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 [2022-11-16 19:43:08,967 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 19:43:09,329 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 [2022-11-16 19:43:09,330 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 19:43:09,330 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 19:43:09,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2022-11-16 19:43:09,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224525672] [2022-11-16 19:43:09,331 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 19:43:09,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-16 19:43:09,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:43:09,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-16 19:43:09,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2022-11-16 19:43:09,333 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) [2022-11-16 19:43:09,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:43:09,657 INFO L93 Difference]: Finished difference Result 58 states and 79 transitions. [2022-11-16 19:43:09,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 19:43:09,658 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 [2022-11-16 19:43:09,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:43:09,666 INFO L225 Difference]: With dead ends: 58 [2022-11-16 19:43:09,667 INFO L226 Difference]: Without dead ends: 43 [2022-11-16 19:43:09,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 60 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=281, Invalid=775, Unknown=0, NotChecked=0, Total=1056 [2022-11-16 19:43:09,669 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 59 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 19:43:09,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 20 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 19:43:09,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-11-16 19:43:09,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 37. [2022-11-16 19:43:09,694 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) [2022-11-16 19:43:09,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 46 transitions. [2022-11-16 19:43:09,696 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 46 transitions. Word has length 26 [2022-11-16 19:43:09,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:43:09,696 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 46 transitions. [2022-11-16 19:43:09,699 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) [2022-11-16 19:43:09,699 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 46 transitions. [2022-11-16 19:43:09,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-16 19:43:09,702 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:43:09,702 INFO L195 NwaCegarLoop]: trace histogram [10, 5, 5, 5, 1, 1, 1, 1, 1, 1] [2022-11-16 19:43:09,715 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb226649-2b1e-495d-bdde-cec2c576fe6f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 19:43:09,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb226649-2b1e-495d-bdde-cec2c576fe6f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:43:09,909 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:43:09,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:43:09,910 INFO L85 PathProgramCache]: Analyzing trace with hash 2015253715, now seen corresponding path program 6 times [2022-11-16 19:43:09,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:43:09,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054103771] [2022-11-16 19:43:09,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:43:09,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:43:10,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:43:10,908 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-11-16 19:43:10,908 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:43:10,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054103771] [2022-11-16 19:43:10,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054103771] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 19:43:10,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807515720] [2022-11-16 19:43:10,909 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 19:43:10,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:43:10,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb226649-2b1e-495d-bdde-cec2c576fe6f/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:43:10,910 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb226649-2b1e-495d-bdde-cec2c576fe6f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:43:10,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb226649-2b1e-495d-bdde-cec2c576fe6f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 19:43:11,212 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 19:43:11,213 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 19:43:11,217 WARN L261 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 114 conjunts are in the unsatisfiable core [2022-11-16 19:43:11,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:43:11,246 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 [2022-11-16 19:43:11,280 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 [2022-11-16 19:43:11,329 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 19:43:11,331 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 [2022-11-16 19:43:11,386 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 19:43:11,386 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 [2022-11-16 19:43:11,464 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 19:43:11,464 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 [2022-11-16 19:43:13,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:43:13,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:43:13,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:43:13,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:43:13,689 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:43:13,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:43:13,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:43:13,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:43:13,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:43:13,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:43:13,698 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:43:13,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:43:13,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:43:13,704 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:43:13,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:43:13,707 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:43:13,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:43:13,711 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:43:14,121 INFO L321 Elim1Store]: treesize reduction 462, result has 31.1 percent of original size [2022-11-16 19:43:14,121 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 [2022-11-16 19:43:18,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:43:18,275 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:43:18,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:43:18,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:43:18,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:43:18,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:43:18,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:43:18,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:43:18,285 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:43:18,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:43:18,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:43:18,289 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:43:18,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:43:18,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:43:18,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:43:18,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:43:18,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:43:18,300 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:43:18,301 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:43:18,694 INFO L321 Elim1Store]: treesize reduction 432, result has 35.8 percent of original size [2022-11-16 19:43:18,696 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 [2022-11-16 19:43:26,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:43:26,347 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:43:26,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:43:26,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:43:26,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:43:26,355 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:43:26,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:43:26,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:43:26,364 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:43:26,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:43:47,720 WARN L233 SmtUtils]: Spent 21.34s 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) [2022-11-16 19:43:47,725 INFO L321 Elim1Store]: treesize reduction 5216, result has 29.7 percent of original size [2022-11-16 19:43:47,726 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