./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-random2d.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd95685c-3579-4c29-a448-6929f6590dfb/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd95685c-3579-4c29-a448-6929f6590dfb/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd95685c-3579-4c29-a448-6929f6590dfb/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd95685c-3579-4c29-a448-6929f6590dfb/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-random2d.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd95685c-3579-4c29-a448-6929f6590dfb/bin/utaipan-UbGMyvGFUs/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd95685c-3579-4c29-a448-6929f6590dfb/bin/utaipan-UbGMyvGFUs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 1978406b317087fc6936fcfda9d4ee773e4c87c61c4595e0ff4751e61b0b216a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 15:47:26,648 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 15:47:26,652 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 15:47:26,700 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 15:47:26,701 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 15:47:26,703 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 15:47:26,706 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 15:47:26,712 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 15:47:26,716 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 15:47:26,723 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 15:47:26,724 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 15:47:26,727 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 15:47:26,727 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 15:47:26,730 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 15:47:26,733 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 15:47:26,736 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 15:47:26,738 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 15:47:26,740 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 15:47:26,746 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 15:47:26,756 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 15:47:26,759 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 15:47:26,761 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 15:47:26,765 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 15:47:26,766 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 15:47:26,779 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 15:47:26,779 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 15:47:26,780 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 15:47:26,782 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 15:47:26,783 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 15:47:26,785 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 15:47:26,786 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 15:47:26,787 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 15:47:26,789 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 15:47:26,791 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 15:47:26,793 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 15:47:26,793 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 15:47:26,794 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 15:47:26,795 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 15:47:26,795 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 15:47:26,796 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 15:47:26,797 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 15:47:26,798 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd95685c-3579-4c29-a448-6929f6590dfb/bin/utaipan-UbGMyvGFUs/config/svcomp-Overflow-64bit-Taipan_Default.epf [2021-11-19 15:47:26,847 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 15:47:26,847 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 15:47:26,848 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 15:47:26,848 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 15:47:26,849 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 15:47:26,849 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 15:47:26,849 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 15:47:26,850 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 15:47:26,850 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 15:47:26,850 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 15:47:26,851 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 15:47:26,851 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 15:47:26,851 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 15:47:26,851 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 15:47:26,852 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 15:47:26,852 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 15:47:26,853 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 15:47:26,853 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-19 15:47:26,854 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 15:47:26,854 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 15:47:26,854 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 15:47:26,855 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 15:47:26,855 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 15:47:26,855 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-19 15:47:26,855 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 15:47:26,856 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 15:47:26,856 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 15:47:26,856 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 15:47:26,857 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 15:47:26,857 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:47:26,857 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 15:47:26,858 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 15:47:26,858 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 15:47:26,858 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 15:47:26,858 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 15:47:26,859 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 15:47:26,859 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 15:47:26,859 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 15:47:26,860 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd95685c-3579-4c29-a448-6929f6590dfb/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd95685c-3579-4c29-a448-6929f6590dfb/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1978406b317087fc6936fcfda9d4ee773e4c87c61c4595e0ff4751e61b0b216a [2021-11-19 15:47:27,250 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 15:47:27,294 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 15:47:27,297 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 15:47:27,299 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 15:47:27,300 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 15:47:27,301 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd95685c-3579-4c29-a448-6929f6590dfb/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-random2d.c [2021-11-19 15:47:27,383 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd95685c-3579-4c29-a448-6929f6590dfb/bin/utaipan-UbGMyvGFUs/data/8b5c3c0cc/3954885028b34d8593fabfc58ec85c65/FLAGbc20a1cff [2021-11-19 15:47:28,057 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 15:47:28,059 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd95685c-3579-4c29-a448-6929f6590dfb/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-random2d.c [2021-11-19 15:47:28,067 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd95685c-3579-4c29-a448-6929f6590dfb/bin/utaipan-UbGMyvGFUs/data/8b5c3c0cc/3954885028b34d8593fabfc58ec85c65/FLAGbc20a1cff [2021-11-19 15:47:28,410 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd95685c-3579-4c29-a448-6929f6590dfb/bin/utaipan-UbGMyvGFUs/data/8b5c3c0cc/3954885028b34d8593fabfc58ec85c65 [2021-11-19 15:47:28,413 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 15:47:28,415 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 15:47:28,417 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 15:47:28,417 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 15:47:28,424 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 15:47:28,425 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:47:28" (1/1) ... [2021-11-19 15:47:28,427 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@412f8711 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:47:28, skipping insertion in model container [2021-11-19 15:47:28,427 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:47:28" (1/1) ... [2021-11-19 15:47:28,437 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 15:47:28,464 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:47:28,695 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:47:28,699 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 15:47:28,738 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:47:28,753 INFO L208 MainTranslator]: Completed translation [2021-11-19 15:47:28,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:47:28 WrapperNode [2021-11-19 15:47:28,755 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 15:47:28,757 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 15:47:28,757 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 15:47:28,758 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 15:47:28,770 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:47:28" (1/1) ... [2021-11-19 15:47:28,775 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:47:28" (1/1) ... [2021-11-19 15:47:28,797 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 40 [2021-11-19 15:47:28,797 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 15:47:28,798 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 15:47:28,798 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 15:47:28,798 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 15:47:28,808 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:47:28" (1/1) ... [2021-11-19 15:47:28,809 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:47:28" (1/1) ... [2021-11-19 15:47:28,811 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:47:28" (1/1) ... [2021-11-19 15:47:28,811 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:47:28" (1/1) ... [2021-11-19 15:47:28,820 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:47:28" (1/1) ... [2021-11-19 15:47:28,831 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:47:28" (1/1) ... [2021-11-19 15:47:28,832 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:47:28" (1/1) ... [2021-11-19 15:47:28,834 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 15:47:28,836 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 15:47:28,836 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 15:47:28,836 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 15:47:28,837 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:47:28" (1/1) ... [2021-11-19 15:47:28,846 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:47:28,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd95685c-3579-4c29-a448-6929f6590dfb/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:47:28,874 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd95685c-3579-4c29-a448-6929f6590dfb/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 15:47:28,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd95685c-3579-4c29-a448-6929f6590dfb/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 15:47:28,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 15:47:28,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 15:47:29,004 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 15:47:29,007 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 15:47:29,248 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 15:47:29,271 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 15:47:29,271 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-19 15:47:29,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:47:29 BoogieIcfgContainer [2021-11-19 15:47:29,275 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 15:47:29,280 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 15:47:29,280 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 15:47:29,286 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 15:47:29,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 03:47:28" (1/3) ... [2021-11-19 15:47:29,287 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b768394 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 03:47:29, skipping insertion in model container [2021-11-19 15:47:29,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:47:28" (2/3) ... [2021-11-19 15:47:29,288 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b768394 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 03:47:29, skipping insertion in model container [2021-11-19 15:47:29,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:47:29" (3/3) ... [2021-11-19 15:47:29,291 INFO L111 eAbstractionObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-random2d.c [2021-11-19 15:47:29,298 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 15:47:29,299 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-19 15:47:29,378 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 15:47:29,393 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 15:47:29,393 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-19 15:47:29,418 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 27 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:47:29,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-19 15:47:29,425 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:47:29,426 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-19 15:47:29,427 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-19 15:47:29,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:47:29,441 INFO L85 PathProgramCache]: Analyzing trace with hash 94531, now seen corresponding path program 1 times [2021-11-19 15:47:29,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:47:29,455 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409651723] [2021-11-19 15:47:29,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:47:29,457 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:47:29,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:47:29,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:47:29,660 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:47:29,673 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409651723] [2021-11-19 15:47:29,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409651723] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:47:29,675 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:47:29,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-19 15:47:29,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148727277] [2021-11-19 15:47:29,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:47:29,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 15:47:29,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:47:29,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 15:47:29,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 15:47:29,769 INFO L87 Difference]: Start difference. First operand has 28 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 27 states have internal predecessors, (33), 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, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:47:29,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:47:29,849 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2021-11-19 15:47:29,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:47:29,852 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2021-11-19 15:47:29,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:47:29,870 INFO L225 Difference]: With dead ends: 33 [2021-11-19 15:47:29,871 INFO L226 Difference]: Without dead ends: 30 [2021-11-19 15:47:29,874 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 15:47:29,879 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 3 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:47:29,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 53 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 15:47:29,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-11-19 15:47:29,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2021-11-19 15:47:29,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 28 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:47:29,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2021-11-19 15:47:29,939 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 3 [2021-11-19 15:47:29,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:47:29,940 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2021-11-19 15:47:29,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:47:29,941 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2021-11-19 15:47:29,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-19 15:47:29,941 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:47:29,942 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-19 15:47:29,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 15:47:29,943 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-19 15:47:29,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:47:29,946 INFO L85 PathProgramCache]: Analyzing trace with hash 2930506, now seen corresponding path program 1 times [2021-11-19 15:47:29,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:47:29,947 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091693687] [2021-11-19 15:47:29,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:47:29,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:47:29,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:47:29,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:47:29,998 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:47:29,999 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091693687] [2021-11-19 15:47:29,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091693687] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:47:29,999 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:47:30,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-19 15:47:30,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200486495] [2021-11-19 15:47:30,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:47:30,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 15:47:30,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:47:30,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 15:47:30,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 15:47:30,006 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:47:30,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:47:30,045 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2021-11-19 15:47:30,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:47:30,048 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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 4 [2021-11-19 15:47:30,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:47:30,049 INFO L225 Difference]: With dead ends: 29 [2021-11-19 15:47:30,049 INFO L226 Difference]: Without dead ends: 28 [2021-11-19 15:47:30,050 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 15:47:30,052 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 27 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:47:30,053 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 26 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:47:30,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-11-19 15:47:30,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-11-19 15:47:30,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 19 states have (on average 1.736842105263158) internal successors, (33), 27 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:47:30,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2021-11-19 15:47:30,062 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 4 [2021-11-19 15:47:30,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:47:30,062 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2021-11-19 15:47:30,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:47:30,063 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2021-11-19 15:47:30,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-19 15:47:30,063 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:47:30,064 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:47:30,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-19 15:47:30,064 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-19 15:47:30,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:47:30,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1403406088, now seen corresponding path program 1 times [2021-11-19 15:47:30,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:47:30,066 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152796090] [2021-11-19 15:47:30,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:47:30,066 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:47:30,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:47:30,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:47:30,141 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:47:30,142 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152796090] [2021-11-19 15:47:30,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152796090] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:47:30,142 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:47:30,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-19 15:47:30,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864692753] [2021-11-19 15:47:30,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:47:30,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 15:47:30,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:47:30,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 15:47:30,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 15:47:30,145 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 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) [2021-11-19 15:47:30,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:47:30,192 INFO L93 Difference]: Finished difference Result 51 states and 63 transitions. [2021-11-19 15:47:30,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:47:30,193 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 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 [2021-11-19 15:47:30,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:47:30,195 INFO L225 Difference]: With dead ends: 51 [2021-11-19 15:47:30,195 INFO L226 Difference]: Without dead ends: 49 [2021-11-19 15:47:30,196 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 15:47:30,198 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 21 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:47:30,199 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 46 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:47:30,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-11-19 15:47:30,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 43. [2021-11-19 15:47:30,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 34 states have (on average 1.7352941176470589) internal successors, (59), 42 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:47:30,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 59 transitions. [2021-11-19 15:47:30,208 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 59 transitions. Word has length 7 [2021-11-19 15:47:30,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:47:30,209 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 59 transitions. [2021-11-19 15:47:30,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 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) [2021-11-19 15:47:30,209 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 59 transitions. [2021-11-19 15:47:30,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-19 15:47:30,210 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:47:30,210 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2021-11-19 15:47:30,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-19 15:47:30,211 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-19 15:47:30,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:47:30,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1403443247, now seen corresponding path program 1 times [2021-11-19 15:47:30,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:47:30,213 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311731495] [2021-11-19 15:47:30,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:47:30,213 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:47:30,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:47:30,249 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:47:30,249 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:47:30,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311731495] [2021-11-19 15:47:30,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311731495] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 15:47:30,250 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744141581] [2021-11-19 15:47:30,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:47:30,250 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 15:47:30,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd95685c-3579-4c29-a448-6929f6590dfb/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:47:30,253 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd95685c-3579-4c29-a448-6929f6590dfb/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 15:47:30,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd95685c-3579-4c29-a448-6929f6590dfb/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-19 15:47:30,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:47:30,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 15:47:30,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:47:30,411 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:47:30,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:47:30,505 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:47:30,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1744141581] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:47:30,506 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1494374224] [2021-11-19 15:47:30,539 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2021-11-19 15:47:30,539 INFO L166 IcfgInterpreter]: Building call graph [2021-11-19 15:47:30,551 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-19 15:47:30,559 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-19 15:47:30,560 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-19 15:47:30,625 INFO L180 QuantifierPusher]: treesize reduction 8, result has 80.5 percent of original size [2021-11-19 15:47:30,642 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-19 15:47:30,659 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:30,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:30,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:30,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:30,741 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:30,766 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:30,792 INFO L180 QuantifierPusher]: treesize reduction 23, result has 58.9 percent of original size [2021-11-19 15:47:30,804 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-19 15:47:30,824 INFO L180 QuantifierPusher]: treesize reduction 23, result has 58.9 percent of original size [2021-11-19 15:47:30,834 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-19 15:47:30,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:30,865 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:30,867 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:30,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:30,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:30,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:30,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:30,904 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-19 15:47:31,103 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 15:47:31,103 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 15:47:31,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2021-11-19 15:47:31,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242126309] [2021-11-19 15:47:31,104 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 15:47:31,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 15:47:31,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:47:31,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 15:47:31,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-11-19 15:47:31,106 INFO L87 Difference]: Start difference. First operand 43 states and 59 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 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) [2021-11-19 15:47:31,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:47:31,190 INFO L93 Difference]: Finished difference Result 146 states and 202 transitions. [2021-11-19 15:47:31,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 15:47:31,191 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 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) Word has length 7 [2021-11-19 15:47:31,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:47:31,194 INFO L225 Difference]: With dead ends: 146 [2021-11-19 15:47:31,197 INFO L226 Difference]: Without dead ends: 145 [2021-11-19 15:47:31,199 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-11-19 15:47:31,201 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 152 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:47:31,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 131 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:47:31,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-11-19 15:47:31,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 123. [2021-11-19 15:47:31,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 114 states have (on average 1.719298245614035) internal successors, (196), 122 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:47:31,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 196 transitions. [2021-11-19 15:47:31,248 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 196 transitions. Word has length 7 [2021-11-19 15:47:31,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:47:31,249 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 196 transitions. [2021-11-19 15:47:31,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 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) [2021-11-19 15:47:31,249 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 196 transitions. [2021-11-19 15:47:31,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-19 15:47:31,251 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:47:31,252 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:47:31,302 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd95685c-3579-4c29-a448-6929f6590dfb/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-19 15:47:31,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd95685c-3579-4c29-a448-6929f6590dfb/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 15:47:31,470 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-19 15:47:31,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:47:31,471 INFO L85 PathProgramCache]: Analyzing trace with hash 555915823, now seen corresponding path program 1 times [2021-11-19 15:47:31,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:47:31,471 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937968275] [2021-11-19 15:47:31,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:47:31,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:47:31,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:47:31,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:47:31,519 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:47:31,520 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937968275] [2021-11-19 15:47:31,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937968275] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:47:31,520 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:47:31,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-19 15:47:31,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690462197] [2021-11-19 15:47:31,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:47:31,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 15:47:31,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:47:31,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 15:47:31,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 15:47:31,523 INFO L87 Difference]: Start difference. First operand 123 states and 196 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:47:31,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:47:31,579 INFO L93 Difference]: Finished difference Result 212 states and 337 transitions. [2021-11-19 15:47:31,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:47:31,581 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2021-11-19 15:47:31,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:47:31,585 INFO L225 Difference]: With dead ends: 212 [2021-11-19 15:47:31,591 INFO L226 Difference]: Without dead ends: 210 [2021-11-19 15:47:31,591 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 15:47:31,593 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 20 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:47:31,594 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 46 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:47:31,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-11-19 15:47:31,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 205. [2021-11-19 15:47:31,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 196 states have (on average 1.663265306122449) internal successors, (326), 204 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:47:31,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 326 transitions. [2021-11-19 15:47:31,638 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 326 transitions. Word has length 8 [2021-11-19 15:47:31,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:47:31,638 INFO L470 AbstractCegarLoop]: Abstraction has 205 states and 326 transitions. [2021-11-19 15:47:31,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:47:31,639 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 326 transitions. [2021-11-19 15:47:31,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-19 15:47:31,640 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:47:31,640 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:47:31,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-19 15:47:31,641 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-19 15:47:31,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:47:31,641 INFO L85 PathProgramCache]: Analyzing trace with hash 53713073, now seen corresponding path program 1 times [2021-11-19 15:47:31,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:47:31,642 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094653200] [2021-11-19 15:47:31,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:47:31,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:47:31,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:47:31,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:47:31,684 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:47:31,685 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094653200] [2021-11-19 15:47:31,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094653200] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:47:31,685 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:47:31,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-19 15:47:31,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666705987] [2021-11-19 15:47:31,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:47:31,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 15:47:31,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:47:31,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 15:47:31,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 15:47:31,690 INFO L87 Difference]: Start difference. First operand 205 states and 326 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 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) [2021-11-19 15:47:31,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:47:31,730 INFO L93 Difference]: Finished difference Result 345 states and 546 transitions. [2021-11-19 15:47:31,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:47:31,731 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 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 [2021-11-19 15:47:31,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:47:31,735 INFO L225 Difference]: With dead ends: 345 [2021-11-19 15:47:31,735 INFO L226 Difference]: Without dead ends: 343 [2021-11-19 15:47:31,736 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 15:47:31,738 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 19 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:47:31,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 46 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:47:31,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2021-11-19 15:47:31,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 330. [2021-11-19 15:47:31,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 321 states have (on average 1.5763239875389408) internal successors, (506), 329 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:47:31,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 506 transitions. [2021-11-19 15:47:31,783 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 506 transitions. Word has length 9 [2021-11-19 15:47:31,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:47:31,783 INFO L470 AbstractCegarLoop]: Abstraction has 330 states and 506 transitions. [2021-11-19 15:47:31,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 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) [2021-11-19 15:47:31,783 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 506 transitions. [2021-11-19 15:47:31,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-19 15:47:31,784 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:47:31,784 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:47:31,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-19 15:47:31,785 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-19 15:47:31,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:47:31,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1665105336, now seen corresponding path program 1 times [2021-11-19 15:47:31,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:47:31,786 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810160836] [2021-11-19 15:47:31,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:47:31,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:47:31,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:47:31,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:47:31,828 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:47:31,828 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810160836] [2021-11-19 15:47:31,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810160836] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:47:31,828 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:47:31,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-19 15:47:31,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590148528] [2021-11-19 15:47:31,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:47:31,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 15:47:31,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:47:31,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 15:47:31,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 15:47:31,831 INFO L87 Difference]: Start difference. First operand 330 states and 506 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:47:31,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:47:31,871 INFO L93 Difference]: Finished difference Result 549 states and 840 transitions. [2021-11-19 15:47:31,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:47:31,872 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 [2021-11-19 15:47:31,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:47:31,877 INFO L225 Difference]: With dead ends: 549 [2021-11-19 15:47:31,877 INFO L226 Difference]: Without dead ends: 547 [2021-11-19 15:47:31,878 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 15:47:31,879 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 18 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:47:31,880 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 46 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:47:31,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2021-11-19 15:47:31,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 542. [2021-11-19 15:47:31,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 533 states have (on average 1.5159474671669793) internal successors, (808), 541 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:47:31,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 808 transitions. [2021-11-19 15:47:31,929 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 808 transitions. Word has length 10 [2021-11-19 15:47:31,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:47:31,935 INFO L470 AbstractCegarLoop]: Abstraction has 542 states and 808 transitions. [2021-11-19 15:47:31,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:47:31,936 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 808 transitions. [2021-11-19 15:47:31,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-19 15:47:31,938 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:47:31,938 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1] [2021-11-19 15:47:31,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-19 15:47:31,939 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-19 15:47:31,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:47:31,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1107964330, now seen corresponding path program 1 times [2021-11-19 15:47:31,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:47:31,944 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002702617] [2021-11-19 15:47:31,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:47:31,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:47:31,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:47:32,003 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:47:32,004 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:47:32,004 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002702617] [2021-11-19 15:47:32,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002702617] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 15:47:32,005 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402357123] [2021-11-19 15:47:32,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:47:32,005 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 15:47:32,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd95685c-3579-4c29-a448-6929f6590dfb/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:47:32,010 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd95685c-3579-4c29-a448-6929f6590dfb/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 15:47:32,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd95685c-3579-4c29-a448-6929f6590dfb/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-19 15:47:32,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:47:32,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 15:47:32,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:47:32,120 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:47:32,120 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:47:32,185 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:47:32,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402357123] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:47:32,186 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [740114752] [2021-11-19 15:47:32,189 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-19 15:47:32,190 INFO L166 IcfgInterpreter]: Building call graph [2021-11-19 15:47:32,190 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-19 15:47:32,191 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-19 15:47:32,191 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-19 15:47:32,244 INFO L180 QuantifierPusher]: treesize reduction 8, result has 80.5 percent of original size [2021-11-19 15:47:32,252 INFO L185 QuantifierPusher]: treesize reduction 3, result has 87.5 percent of original size 21 [2021-11-19 15:47:32,257 INFO L180 QuantifierPusher]: treesize reduction 25, result has 46.8 percent of original size [2021-11-19 15:47:32,260 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-19 15:47:32,268 INFO L180 QuantifierPusher]: treesize reduction 8, result has 81.8 percent of original size [2021-11-19 15:47:32,275 INFO L185 QuantifierPusher]: treesize reduction 3, result has 87.5 percent of original size 21 [2021-11-19 15:47:32,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:32,294 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:32,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:32,330 INFO L180 QuantifierPusher]: treesize reduction 39, result has 62.1 percent of original size [2021-11-19 15:47:32,341 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-11-19 15:47:32,352 INFO L180 QuantifierPusher]: treesize reduction 9, result has 90.0 percent of original size [2021-11-19 15:47:32,373 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-11-19 15:47:32,379 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:32,408 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:32,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:32,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:32,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:32,414 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:32,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:32,425 INFO L180 QuantifierPusher]: treesize reduction 23, result has 52.1 percent of original size [2021-11-19 15:47:32,428 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-19 15:47:32,431 INFO L180 QuantifierPusher]: treesize reduction 5, result has 89.4 percent of original size [2021-11-19 15:47:32,436 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-19 15:47:32,443 INFO L180 QuantifierPusher]: treesize reduction 23, result has 52.1 percent of original size [2021-11-19 15:47:32,445 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-19 15:47:32,446 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:32,449 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:32,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:32,457 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:32,465 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:32,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:32,473 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:32,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:32,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:32,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:32,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:32,494 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:32,520 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:47:32,539 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:47:32,552 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:47:32,565 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 144 [2021-11-19 15:47:32,575 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 161 [2021-11-19 15:47:32,581 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-19 15:47:33,336 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 15:47:33,336 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 15:47:33,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2021-11-19 15:47:33,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254118785] [2021-11-19 15:47:33,337 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 15:47:33,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 15:47:33,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:47:33,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 15:47:33,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-11-19 15:47:33,339 INFO L87 Difference]: Start difference. First operand 542 states and 808 transitions. Second operand has 6 states, 5 states have (on average 5.6) internal successors, (28), 5 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) [2021-11-19 15:47:33,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:47:33,429 INFO L93 Difference]: Finished difference Result 1046 states and 1607 transitions. [2021-11-19 15:47:33,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 15:47:33,429 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 5 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) Word has length 14 [2021-11-19 15:47:33,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:47:33,457 INFO L225 Difference]: With dead ends: 1046 [2021-11-19 15:47:33,457 INFO L226 Difference]: Without dead ends: 1044 [2021-11-19 15:47:33,459 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-11-19 15:47:33,460 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 122 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:47:33,460 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 112 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 15:47:33,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1044 states. [2021-11-19 15:47:33,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1044 to 903. [2021-11-19 15:47:33,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 903 states, 894 states have (on average 1.5279642058165548) internal successors, (1366), 902 states have internal predecessors, (1366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:47:33,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 903 states to 903 states and 1366 transitions. [2021-11-19 15:47:33,519 INFO L78 Accepts]: Start accepts. Automaton has 903 states and 1366 transitions. Word has length 14 [2021-11-19 15:47:33,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:47:33,520 INFO L470 AbstractCegarLoop]: Abstraction has 903 states and 1366 transitions. [2021-11-19 15:47:33,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 5 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) [2021-11-19 15:47:33,520 INFO L276 IsEmpty]: Start isEmpty. Operand 903 states and 1366 transitions. [2021-11-19 15:47:33,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-19 15:47:33,522 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:47:33,522 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:47:33,555 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd95685c-3579-4c29-a448-6929f6590dfb/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-19 15:47:33,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd95685c-3579-4c29-a448-6929f6590dfb/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-11-19 15:47:33,726 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-19 15:47:33,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:47:33,727 INFO L85 PathProgramCache]: Analyzing trace with hash 953294341, now seen corresponding path program 1 times [2021-11-19 15:47:33,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:47:33,727 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184125165] [2021-11-19 15:47:33,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:47:33,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:47:33,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:47:33,760 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:47:33,761 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:47:33,761 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184125165] [2021-11-19 15:47:33,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184125165] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 15:47:33,761 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646625359] [2021-11-19 15:47:33,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:47:33,762 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 15:47:33,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd95685c-3579-4c29-a448-6929f6590dfb/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:47:33,763 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd95685c-3579-4c29-a448-6929f6590dfb/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 15:47:33,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd95685c-3579-4c29-a448-6929f6590dfb/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-19 15:47:33,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:47:33,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 15:47:33,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:47:33,876 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:47:33,876 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:47:33,949 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:47:33,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [646625359] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:47:33,949 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [81545662] [2021-11-19 15:47:33,953 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2021-11-19 15:47:33,954 INFO L166 IcfgInterpreter]: Building call graph [2021-11-19 15:47:33,954 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-19 15:47:33,954 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-19 15:47:33,954 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-19 15:47:33,974 INFO L180 QuantifierPusher]: treesize reduction 8, result has 80.5 percent of original size [2021-11-19 15:47:33,980 INFO L185 QuantifierPusher]: treesize reduction 3, result has 87.5 percent of original size 21 [2021-11-19 15:47:33,984 INFO L180 QuantifierPusher]: treesize reduction 29, result has 43.1 percent of original size [2021-11-19 15:47:33,985 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-19 15:47:33,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:33,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:34,010 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:34,022 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.9 percent of original size [2021-11-19 15:47:34,033 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-11-19 15:47:34,044 INFO L180 QuantifierPusher]: treesize reduction 25, result has 75.0 percent of original size [2021-11-19 15:47:34,053 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-11-19 15:47:34,060 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:34,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:34,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:34,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:34,082 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:34,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:34,098 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:34,102 INFO L180 QuantifierPusher]: treesize reduction 17, result has 66.0 percent of original size [2021-11-19 15:47:34,107 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-19 15:47:34,111 INFO L180 QuantifierPusher]: treesize reduction 21, result has 58.8 percent of original size [2021-11-19 15:47:34,113 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-19 15:47:34,119 INFO L180 QuantifierPusher]: treesize reduction 17, result has 66.0 percent of original size [2021-11-19 15:47:34,122 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-19 15:47:34,137 INFO L180 QuantifierPusher]: treesize reduction 21, result has 58.8 percent of original size [2021-11-19 15:47:34,148 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-19 15:47:34,149 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:34,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:34,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:34,171 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:34,180 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-19 15:47:34,577 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 15:47:34,577 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 15:47:34,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2021-11-19 15:47:34,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626592670] [2021-11-19 15:47:34,578 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 15:47:34,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 15:47:34,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:47:34,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 15:47:34,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2021-11-19 15:47:34,580 INFO L87 Difference]: Start difference. First operand 903 states and 1366 transitions. Second operand has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:47:34,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:47:34,641 INFO L93 Difference]: Finished difference Result 1364 states and 2105 transitions. [2021-11-19 15:47:34,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 15:47:34,641 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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 16 [2021-11-19 15:47:34,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:47:34,651 INFO L225 Difference]: With dead ends: 1364 [2021-11-19 15:47:34,651 INFO L226 Difference]: Without dead ends: 1362 [2021-11-19 15:47:34,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2021-11-19 15:47:34,654 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 84 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:47:34,655 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 66 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:47:34,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1362 states. [2021-11-19 15:47:34,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1362 to 1060. [2021-11-19 15:47:34,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1060 states, 1052 states have (on average 1.518060836501901) internal successors, (1597), 1059 states have internal predecessors, (1597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:47:34,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1060 states to 1060 states and 1597 transitions. [2021-11-19 15:47:34,718 INFO L78 Accepts]: Start accepts. Automaton has 1060 states and 1597 transitions. Word has length 16 [2021-11-19 15:47:34,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:47:34,719 INFO L470 AbstractCegarLoop]: Abstraction has 1060 states and 1597 transitions. [2021-11-19 15:47:34,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:47:34,719 INFO L276 IsEmpty]: Start isEmpty. Operand 1060 states and 1597 transitions. [2021-11-19 15:47:34,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-19 15:47:34,721 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:47:34,722 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2021-11-19 15:47:34,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd95685c-3579-4c29-a448-6929f6590dfb/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-19 15:47:34,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd95685c-3579-4c29-a448-6929f6590dfb/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 15:47:34,940 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-19 15:47:34,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:47:34,940 INFO L85 PathProgramCache]: Analyzing trace with hash -2065182968, now seen corresponding path program 1 times [2021-11-19 15:47:34,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:47:34,940 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754958711] [2021-11-19 15:47:34,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:47:34,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:47:34,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:47:34,969 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:47:34,970 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:47:34,970 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754958711] [2021-11-19 15:47:34,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754958711] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 15:47:34,970 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488183236] [2021-11-19 15:47:34,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:47:34,971 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 15:47:34,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd95685c-3579-4c29-a448-6929f6590dfb/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:47:34,972 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd95685c-3579-4c29-a448-6929f6590dfb/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 15:47:34,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd95685c-3579-4c29-a448-6929f6590dfb/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-19 15:47:35,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:47:35,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 15:47:35,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:47:35,066 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:47:35,066 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:47:35,124 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:47:35,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1488183236] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:47:35,125 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [197692087] [2021-11-19 15:47:35,128 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2021-11-19 15:47:35,128 INFO L166 IcfgInterpreter]: Building call graph [2021-11-19 15:47:35,129 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-19 15:47:35,129 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-19 15:47:35,129 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-19 15:47:35,143 INFO L180 QuantifierPusher]: treesize reduction 8, result has 80.5 percent of original size [2021-11-19 15:47:35,149 INFO L185 QuantifierPusher]: treesize reduction 3, result has 87.5 percent of original size 21 [2021-11-19 15:47:35,160 INFO L180 QuantifierPusher]: treesize reduction 33, result has 40.0 percent of original size [2021-11-19 15:47:35,165 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-19 15:47:35,171 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:35,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:35,191 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:35,205 INFO L180 QuantifierPusher]: treesize reduction 7, result has 91.5 percent of original size [2021-11-19 15:47:35,214 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-11-19 15:47:35,219 INFO L180 QuantifierPusher]: treesize reduction 31, result has 69.6 percent of original size [2021-11-19 15:47:35,224 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-11-19 15:47:35,226 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:35,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:35,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:35,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:35,242 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:35,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:35,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:35,256 INFO L180 QuantifierPusher]: treesize reduction 17, result has 66.0 percent of original size [2021-11-19 15:47:35,260 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-19 15:47:35,263 INFO L180 QuantifierPusher]: treesize reduction 27, result has 50.9 percent of original size [2021-11-19 15:47:35,267 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-11-19 15:47:35,278 INFO L180 QuantifierPusher]: treesize reduction 17, result has 66.0 percent of original size [2021-11-19 15:47:35,282 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-19 15:47:35,290 INFO L180 QuantifierPusher]: treesize reduction 27, result has 50.9 percent of original size [2021-11-19 15:47:35,292 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-11-19 15:47:35,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:35,295 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:35,298 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:35,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:35,308 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-19 15:47:35,731 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 15:47:35,731 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 15:47:35,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2021-11-19 15:47:35,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107518835] [2021-11-19 15:47:35,732 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 15:47:35,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 15:47:35,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:47:35,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 15:47:35,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-11-19 15:47:35,733 INFO L87 Difference]: Start difference. First operand 1060 states and 1597 transitions. Second operand has 6 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:47:35,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:47:35,849 INFO L93 Difference]: Finished difference Result 2461 states and 3871 transitions. [2021-11-19 15:47:35,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 15:47:35,849 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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 18 [2021-11-19 15:47:35,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:47:35,868 INFO L225 Difference]: With dead ends: 2461 [2021-11-19 15:47:35,868 INFO L226 Difference]: Without dead ends: 2459 [2021-11-19 15:47:35,871 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-11-19 15:47:35,872 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 102 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:47:35,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 107 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 15:47:35,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2459 states. [2021-11-19 15:47:35,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2459 to 2129. [2021-11-19 15:47:35,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2129 states, 2121 states have (on average 1.5223950966525224) internal successors, (3229), 2128 states have internal predecessors, (3229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:47:35,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2129 states to 2129 states and 3229 transitions. [2021-11-19 15:47:35,975 INFO L78 Accepts]: Start accepts. Automaton has 2129 states and 3229 transitions. Word has length 18 [2021-11-19 15:47:35,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:47:35,976 INFO L470 AbstractCegarLoop]: Abstraction has 2129 states and 3229 transitions. [2021-11-19 15:47:35,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:47:35,976 INFO L276 IsEmpty]: Start isEmpty. Operand 2129 states and 3229 transitions. [2021-11-19 15:47:35,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-19 15:47:35,983 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:47:35,984 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1] [2021-11-19 15:47:36,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd95685c-3579-4c29-a448-6929f6590dfb/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-19 15:47:36,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd95685c-3579-4c29-a448-6929f6590dfb/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2021-11-19 15:47:36,197 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-19 15:47:36,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:47:36,198 INFO L85 PathProgramCache]: Analyzing trace with hash -492631821, now seen corresponding path program 2 times [2021-11-19 15:47:36,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:47:36,198 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125275541] [2021-11-19 15:47:36,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:47:36,198 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:47:36,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:47:36,231 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-19 15:47:36,231 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:47:36,232 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125275541] [2021-11-19 15:47:36,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125275541] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 15:47:36,234 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902349709] [2021-11-19 15:47:36,234 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 15:47:36,234 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 15:47:36,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd95685c-3579-4c29-a448-6929f6590dfb/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:47:36,236 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd95685c-3579-4c29-a448-6929f6590dfb/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 15:47:36,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd95685c-3579-4c29-a448-6929f6590dfb/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-19 15:47:36,261 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-11-19 15:47:36,262 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 15:47:36,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 15:47:36,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:47:36,322 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-19 15:47:36,322 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:47:36,382 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-19 15:47:36,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902349709] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:47:36,383 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [322677926] [2021-11-19 15:47:36,385 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2021-11-19 15:47:36,385 INFO L166 IcfgInterpreter]: Building call graph [2021-11-19 15:47:36,386 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-19 15:47:36,386 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-19 15:47:36,386 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-19 15:47:36,394 INFO L180 QuantifierPusher]: treesize reduction 8, result has 80.5 percent of original size [2021-11-19 15:47:36,398 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-19 15:47:36,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:36,409 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:36,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:36,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:36,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:36,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:36,420 INFO L180 QuantifierPusher]: treesize reduction 23, result has 58.9 percent of original size [2021-11-19 15:47:36,429 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-19 15:47:36,435 INFO L180 QuantifierPusher]: treesize reduction 23, result has 58.9 percent of original size [2021-11-19 15:47:36,438 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-19 15:47:36,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:36,446 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:36,447 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:36,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:36,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:36,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:36,455 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:36,458 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-19 15:47:36,605 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 15:47:36,605 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 15:47:36,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2021-11-19 15:47:36,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831466930] [2021-11-19 15:47:36,606 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 15:47:36,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 15:47:36,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:47:36,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 15:47:36,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-11-19 15:47:36,607 INFO L87 Difference]: Start difference. First operand 2129 states and 3229 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 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) [2021-11-19 15:47:36,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:47:36,677 INFO L93 Difference]: Finished difference Result 2129 states and 3229 transitions. [2021-11-19 15:47:36,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 15:47:36,677 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 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) Word has length 19 [2021-11-19 15:47:36,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:47:36,692 INFO L225 Difference]: With dead ends: 2129 [2021-11-19 15:47:36,693 INFO L226 Difference]: Without dead ends: 2128 [2021-11-19 15:47:36,695 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2021-11-19 15:47:36,696 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 51 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:47:36,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 50 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:47:36,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2128 states. [2021-11-19 15:47:36,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2128 to 1798. [2021-11-19 15:47:36,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1798 states, 1791 states have (on average 1.4874371859296482) internal successors, (2664), 1797 states have internal predecessors, (2664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:47:36,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1798 states to 1798 states and 2664 transitions. [2021-11-19 15:47:36,773 INFO L78 Accepts]: Start accepts. Automaton has 1798 states and 2664 transitions. Word has length 19 [2021-11-19 15:47:36,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:47:36,773 INFO L470 AbstractCegarLoop]: Abstraction has 1798 states and 2664 transitions. [2021-11-19 15:47:36,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 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) [2021-11-19 15:47:36,774 INFO L276 IsEmpty]: Start isEmpty. Operand 1798 states and 2664 transitions. [2021-11-19 15:47:36,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-19 15:47:36,774 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:47:36,775 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:47:36,824 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd95685c-3579-4c29-a448-6929f6590dfb/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-19 15:47:37,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd95685c-3579-4c29-a448-6929f6590dfb/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 15:47:37,001 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-19 15:47:37,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:47:37,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1112024197, now seen corresponding path program 1 times [2021-11-19 15:47:37,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:47:37,003 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485811855] [2021-11-19 15:47:37,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:47:37,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:47:37,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:47:37,057 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:47:37,057 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:47:37,057 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485811855] [2021-11-19 15:47:37,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485811855] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 15:47:37,058 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [467274910] [2021-11-19 15:47:37,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:47:37,058 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 15:47:37,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd95685c-3579-4c29-a448-6929f6590dfb/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:47:37,065 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd95685c-3579-4c29-a448-6929f6590dfb/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 15:47:37,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd95685c-3579-4c29-a448-6929f6590dfb/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-19 15:47:37,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:47:37,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 15:47:37,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:47:37,166 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:47:37,166 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:47:37,239 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:47:37,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [467274910] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:47:37,240 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1239397740] [2021-11-19 15:47:37,242 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2021-11-19 15:47:37,243 INFO L166 IcfgInterpreter]: Building call graph [2021-11-19 15:47:37,243 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-19 15:47:37,243 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-19 15:47:37,244 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-19 15:47:37,252 INFO L180 QuantifierPusher]: treesize reduction 8, result has 80.5 percent of original size [2021-11-19 15:47:37,263 INFO L185 QuantifierPusher]: treesize reduction 3, result has 87.5 percent of original size 21 [2021-11-19 15:47:37,266 INFO L180 QuantifierPusher]: treesize reduction 37, result has 37.3 percent of original size [2021-11-19 15:47:37,268 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-19 15:47:37,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:37,282 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:37,288 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:37,295 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.9 percent of original size [2021-11-19 15:47:37,304 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-11-19 15:47:37,309 INFO L180 QuantifierPusher]: treesize reduction 33, result has 69.4 percent of original size [2021-11-19 15:47:37,316 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-11-19 15:47:37,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:37,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:37,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:37,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:37,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:37,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:37,338 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:37,342 INFO L180 QuantifierPusher]: treesize reduction 17, result has 66.0 percent of original size [2021-11-19 15:47:37,344 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-19 15:47:37,348 INFO L180 QuantifierPusher]: treesize reduction 29, result has 50.8 percent of original size [2021-11-19 15:47:37,350 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-19 15:47:37,368 INFO L180 QuantifierPusher]: treesize reduction 17, result has 66.0 percent of original size [2021-11-19 15:47:37,371 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-19 15:47:37,382 INFO L180 QuantifierPusher]: treesize reduction 29, result has 50.8 percent of original size [2021-11-19 15:47:37,384 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-19 15:47:37,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:37,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:37,402 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:37,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:37,417 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-19 15:47:37,875 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 15:47:37,876 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 15:47:37,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2021-11-19 15:47:37,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276549463] [2021-11-19 15:47:37,876 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 15:47:37,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 15:47:37,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:47:37,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 15:47:37,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-11-19 15:47:37,878 INFO L87 Difference]: Start difference. First operand 1798 states and 2664 transitions. Second operand has 6 states, 5 states have (on average 8.0) internal successors, (40), 5 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) [2021-11-19 15:47:37,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:47:37,970 INFO L93 Difference]: Finished difference Result 3110 states and 4688 transitions. [2021-11-19 15:47:37,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 15:47:37,971 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 5 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) Word has length 20 [2021-11-19 15:47:37,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:47:37,993 INFO L225 Difference]: With dead ends: 3110 [2021-11-19 15:47:37,993 INFO L226 Difference]: Without dead ends: 3108 [2021-11-19 15:47:37,997 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-11-19 15:47:37,998 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 78 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:47:37,998 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 60 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:47:38,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3108 states. [2021-11-19 15:47:38,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3108 to 2295. [2021-11-19 15:47:38,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2295 states, 2289 states have (on average 1.4600262123197902) internal successors, (3342), 2294 states have internal predecessors, (3342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:47:38,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2295 states to 2295 states and 3342 transitions. [2021-11-19 15:47:38,125 INFO L78 Accepts]: Start accepts. Automaton has 2295 states and 3342 transitions. Word has length 20 [2021-11-19 15:47:38,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:47:38,125 INFO L470 AbstractCegarLoop]: Abstraction has 2295 states and 3342 transitions. [2021-11-19 15:47:38,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 5 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) [2021-11-19 15:47:38,126 INFO L276 IsEmpty]: Start isEmpty. Operand 2295 states and 3342 transitions. [2021-11-19 15:47:38,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-19 15:47:38,127 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:47:38,127 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 1, 1] [2021-11-19 15:47:38,170 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd95685c-3579-4c29-a448-6929f6590dfb/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-19 15:47:38,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd95685c-3579-4c29-a448-6929f6590dfb/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 15:47:38,342 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-19 15:47:38,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:47:38,342 INFO L85 PathProgramCache]: Analyzing trace with hash -923998945, now seen corresponding path program 1 times [2021-11-19 15:47:38,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:47:38,342 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321970474] [2021-11-19 15:47:38,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:47:38,343 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:47:38,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:47:38,385 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:47:38,385 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:47:38,386 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321970474] [2021-11-19 15:47:38,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321970474] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 15:47:38,386 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245268923] [2021-11-19 15:47:38,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:47:38,386 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 15:47:38,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd95685c-3579-4c29-a448-6929f6590dfb/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:47:38,387 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd95685c-3579-4c29-a448-6929f6590dfb/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 15:47:38,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd95685c-3579-4c29-a448-6929f6590dfb/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-19 15:47:38,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:47:38,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 15:47:38,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:47:38,527 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:47:38,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:47:38,633 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:47:38,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245268923] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:47:38,634 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1769788602] [2021-11-19 15:47:38,640 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-19 15:47:38,641 INFO L166 IcfgInterpreter]: Building call graph [2021-11-19 15:47:38,641 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-19 15:47:38,641 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-19 15:47:38,641 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-19 15:47:38,651 INFO L180 QuantifierPusher]: treesize reduction 8, result has 80.5 percent of original size [2021-11-19 15:47:38,655 INFO L185 QuantifierPusher]: treesize reduction 3, result has 87.5 percent of original size 21 [2021-11-19 15:47:38,657 INFO L180 QuantifierPusher]: treesize reduction 29, result has 43.1 percent of original size [2021-11-19 15:47:38,659 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-19 15:47:38,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:38,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:38,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:38,675 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.9 percent of original size [2021-11-19 15:47:38,685 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-11-19 15:47:38,691 INFO L180 QuantifierPusher]: treesize reduction 25, result has 75.0 percent of original size [2021-11-19 15:47:38,695 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-11-19 15:47:38,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:38,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:38,711 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:38,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:38,713 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:38,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:38,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:38,722 INFO L180 QuantifierPusher]: treesize reduction 17, result has 66.0 percent of original size [2021-11-19 15:47:38,725 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-19 15:47:38,727 INFO L180 QuantifierPusher]: treesize reduction 21, result has 58.8 percent of original size [2021-11-19 15:47:38,729 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-19 15:47:38,735 INFO L180 QuantifierPusher]: treesize reduction 17, result has 66.0 percent of original size [2021-11-19 15:47:38,737 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-19 15:47:38,743 INFO L180 QuantifierPusher]: treesize reduction 21, result has 58.8 percent of original size [2021-11-19 15:47:38,745 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-19 15:47:38,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:38,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:38,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:38,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:38,762 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-19 15:47:39,147 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 15:47:39,148 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 15:47:39,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2021-11-19 15:47:39,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039442051] [2021-11-19 15:47:39,148 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 15:47:39,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:47:39,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:47:39,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:47:39,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2021-11-19 15:47:39,150 INFO L87 Difference]: Start difference. First operand 2295 states and 3342 transitions. Second operand has 8 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:47:39,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:47:39,371 INFO L93 Difference]: Finished difference Result 6600 states and 9697 transitions. [2021-11-19 15:47:39,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 15:47:39,372 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 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 25 [2021-11-19 15:47:39,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:47:39,417 INFO L225 Difference]: With dead ends: 6600 [2021-11-19 15:47:39,418 INFO L226 Difference]: Without dead ends: 6599 [2021-11-19 15:47:39,424 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 59 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2021-11-19 15:47:39,425 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 156 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:47:39,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 141 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 15:47:39,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6599 states. [2021-11-19 15:47:39,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6599 to 5400. [2021-11-19 15:47:39,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5400 states, 5394 states have (on average 1.4556915090841676) internal successors, (7852), 5399 states have internal predecessors, (7852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:47:39,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5400 states to 5400 states and 7852 transitions. [2021-11-19 15:47:39,642 INFO L78 Accepts]: Start accepts. Automaton has 5400 states and 7852 transitions. Word has length 25 [2021-11-19 15:47:39,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:47:39,643 INFO L470 AbstractCegarLoop]: Abstraction has 5400 states and 7852 transitions. [2021-11-19 15:47:39,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:47:39,643 INFO L276 IsEmpty]: Start isEmpty. Operand 5400 states and 7852 transitions. [2021-11-19 15:47:39,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-19 15:47:39,645 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:47:39,645 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1] [2021-11-19 15:47:39,691 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd95685c-3579-4c29-a448-6929f6590dfb/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-19 15:47:39,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd95685c-3579-4c29-a448-6929f6590dfb/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2021-11-19 15:47:39,866 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-19 15:47:39,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:47:39,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1295272154, now seen corresponding path program 1 times [2021-11-19 15:47:39,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:47:39,866 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461079360] [2021-11-19 15:47:39,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:47:39,867 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:47:39,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:47:39,915 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:47:39,915 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:47:39,916 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461079360] [2021-11-19 15:47:39,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461079360] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 15:47:39,916 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460926176] [2021-11-19 15:47:39,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:47:39,916 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 15:47:39,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd95685c-3579-4c29-a448-6929f6590dfb/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:47:39,918 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd95685c-3579-4c29-a448-6929f6590dfb/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 15:47:39,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd95685c-3579-4c29-a448-6929f6590dfb/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-19 15:47:39,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:47:39,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 15:47:39,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:47:40,056 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:47:40,057 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:47:40,162 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:47:40,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1460926176] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:47:40,162 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1026192446] [2021-11-19 15:47:40,167 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2021-11-19 15:47:40,167 INFO L166 IcfgInterpreter]: Building call graph [2021-11-19 15:47:40,168 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-19 15:47:40,168 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-19 15:47:40,168 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-19 15:47:40,177 INFO L180 QuantifierPusher]: treesize reduction 8, result has 80.5 percent of original size [2021-11-19 15:47:40,199 INFO L185 QuantifierPusher]: treesize reduction 3, result has 87.5 percent of original size 21 [2021-11-19 15:47:40,202 INFO L180 QuantifierPusher]: treesize reduction 37, result has 37.3 percent of original size [2021-11-19 15:47:40,204 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-19 15:47:40,206 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:40,208 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:40,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:40,219 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.9 percent of original size [2021-11-19 15:47:40,225 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-11-19 15:47:40,230 INFO L180 QuantifierPusher]: treesize reduction 33, result has 69.4 percent of original size [2021-11-19 15:47:40,234 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-11-19 15:47:40,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:40,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:40,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:40,250 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:40,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:40,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:40,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:40,262 INFO L180 QuantifierPusher]: treesize reduction 17, result has 66.0 percent of original size [2021-11-19 15:47:40,265 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-19 15:47:40,271 INFO L180 QuantifierPusher]: treesize reduction 29, result has 50.8 percent of original size [2021-11-19 15:47:40,273 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-19 15:47:40,278 INFO L180 QuantifierPusher]: treesize reduction 17, result has 66.0 percent of original size [2021-11-19 15:47:40,280 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-19 15:47:40,298 INFO L180 QuantifierPusher]: treesize reduction 29, result has 50.8 percent of original size [2021-11-19 15:47:40,303 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-19 15:47:40,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:40,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:40,311 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:40,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:40,322 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-19 15:47:40,866 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 15:47:40,867 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 15:47:40,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2021-11-19 15:47:40,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811421548] [2021-11-19 15:47:40,867 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 15:47:40,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:47:40,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:47:40,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:47:40,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2021-11-19 15:47:40,869 INFO L87 Difference]: Start difference. First operand 5400 states and 7852 transitions. Second operand has 8 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:47:41,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:47:41,251 INFO L93 Difference]: Finished difference Result 15528 states and 22801 transitions. [2021-11-19 15:47:41,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 15:47:41,252 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 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 31 [2021-11-19 15:47:41,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:47:41,334 INFO L225 Difference]: With dead ends: 15528 [2021-11-19 15:47:41,334 INFO L226 Difference]: Without dead ends: 15527 [2021-11-19 15:47:41,349 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 73 SyntacticMatches, 6 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2021-11-19 15:47:41,350 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 140 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:47:41,350 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 141 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 15:47:41,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15527 states. [2021-11-19 15:47:41,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15527 to 12717. [2021-11-19 15:47:41,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12717 states, 12711 states have (on average 1.4511840138462748) internal successors, (18446), 12716 states have internal predecessors, (18446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:47:41,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12717 states to 12717 states and 18446 transitions. [2021-11-19 15:47:41,889 INFO L78 Accepts]: Start accepts. Automaton has 12717 states and 18446 transitions. Word has length 31 [2021-11-19 15:47:41,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:47:41,890 INFO L470 AbstractCegarLoop]: Abstraction has 12717 states and 18446 transitions. [2021-11-19 15:47:41,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:47:41,890 INFO L276 IsEmpty]: Start isEmpty. Operand 12717 states and 18446 transitions. [2021-11-19 15:47:41,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-19 15:47:41,892 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:47:41,892 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 1, 1] [2021-11-19 15:47:41,937 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd95685c-3579-4c29-a448-6929f6590dfb/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-19 15:47:42,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd95685c-3579-4c29-a448-6929f6590dfb/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable117 [2021-11-19 15:47:42,105 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-19 15:47:42,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:47:42,106 INFO L85 PathProgramCache]: Analyzing trace with hash 188182408, now seen corresponding path program 2 times [2021-11-19 15:47:42,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:47:42,106 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633004250] [2021-11-19 15:47:42,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:47:42,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:47:42,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:47:42,182 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:47:42,183 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:47:42,183 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633004250] [2021-11-19 15:47:42,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633004250] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 15:47:42,184 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478032028] [2021-11-19 15:47:42,184 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 15:47:42,184 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 15:47:42,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd95685c-3579-4c29-a448-6929f6590dfb/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:47:42,201 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd95685c-3579-4c29-a448-6929f6590dfb/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 15:47:42,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd95685c-3579-4c29-a448-6929f6590dfb/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-19 15:47:42,249 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-19 15:47:42,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 15:47:42,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 15:47:42,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:47:42,341 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:47:42,341 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:47:42,467 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:47:42,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1478032028] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:47:42,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [957732981] [2021-11-19 15:47:42,470 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-19 15:47:42,470 INFO L166 IcfgInterpreter]: Building call graph [2021-11-19 15:47:42,471 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-19 15:47:42,471 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-19 15:47:42,471 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-19 15:47:42,477 INFO L180 QuantifierPusher]: treesize reduction 8, result has 80.5 percent of original size [2021-11-19 15:47:42,479 INFO L185 QuantifierPusher]: treesize reduction 3, result has 87.5 percent of original size 21 [2021-11-19 15:47:42,482 INFO L180 QuantifierPusher]: treesize reduction 25, result has 46.8 percent of original size [2021-11-19 15:47:42,483 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-19 15:47:42,485 INFO L180 QuantifierPusher]: treesize reduction 8, result has 81.8 percent of original size [2021-11-19 15:47:42,488 INFO L185 QuantifierPusher]: treesize reduction 3, result has 87.5 percent of original size 21 [2021-11-19 15:47:42,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:42,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:42,498 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:42,565 INFO L180 QuantifierPusher]: treesize reduction 39, result has 62.1 percent of original size [2021-11-19 15:47:42,568 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-11-19 15:47:42,574 INFO L180 QuantifierPusher]: treesize reduction 9, result has 90.0 percent of original size [2021-11-19 15:47:42,586 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-11-19 15:47:42,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:42,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:42,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:42,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:42,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:42,606 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:42,609 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:42,613 INFO L180 QuantifierPusher]: treesize reduction 23, result has 52.1 percent of original size [2021-11-19 15:47:42,615 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-19 15:47:42,619 INFO L180 QuantifierPusher]: treesize reduction 5, result has 89.4 percent of original size [2021-11-19 15:47:42,625 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-19 15:47:42,630 INFO L180 QuantifierPusher]: treesize reduction 23, result has 52.1 percent of original size [2021-11-19 15:47:42,632 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-19 15:47:42,634 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:42,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:42,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:42,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:42,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:42,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:42,658 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:42,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:42,674 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:42,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:42,679 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:42,682 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:42,694 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:47:42,703 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:47:42,705 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:47:42,710 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:47:42,712 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:47:42,717 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-19 15:47:42,719 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 133 [2021-11-19 15:47:42,722 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 150 [2021-11-19 15:47:42,725 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-19 15:47:43,369 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 15:47:43,369 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 15:47:43,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2021-11-19 15:47:43,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725526884] [2021-11-19 15:47:43,370 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 15:47:43,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 15:47:43,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:47:43,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 15:47:43,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2021-11-19 15:47:43,371 INFO L87 Difference]: Start difference. First operand 12717 states and 18446 transitions. Second operand has 12 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:47:44,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:47:44,251 INFO L93 Difference]: Finished difference Result 43312 states and 64319 transitions. [2021-11-19 15:47:44,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 15:47:44,251 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 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 35 [2021-11-19 15:47:44,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:47:44,382 INFO L225 Difference]: With dead ends: 43312 [2021-11-19 15:47:44,383 INFO L226 Difference]: Without dead ends: 43310 [2021-11-19 15:47:44,415 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 86 SyntacticMatches, 5 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2021-11-19 15:47:44,416 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 325 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:47:44,417 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [325 Valid, 222 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 15:47:44,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43310 states. [2021-11-19 15:47:45,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43310 to 27375. [2021-11-19 15:47:45,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27375 states, 27369 states have (on average 1.4275274946106908) internal successors, (39070), 27374 states have internal predecessors, (39070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:47:45,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27375 states to 27375 states and 39070 transitions. [2021-11-19 15:47:45,963 INFO L78 Accepts]: Start accepts. Automaton has 27375 states and 39070 transitions. Word has length 35 [2021-11-19 15:47:45,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:47:45,964 INFO L470 AbstractCegarLoop]: Abstraction has 27375 states and 39070 transitions. [2021-11-19 15:47:45,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:47:45,965 INFO L276 IsEmpty]: Start isEmpty. Operand 27375 states and 39070 transitions. [2021-11-19 15:47:45,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-19 15:47:45,969 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:47:45,969 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1] [2021-11-19 15:47:46,016 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd95685c-3579-4c29-a448-6929f6590dfb/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-19 15:47:46,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd95685c-3579-4c29-a448-6929f6590dfb/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 15:47:46,189 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-19 15:47:46,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:47:46,190 INFO L85 PathProgramCache]: Analyzing trace with hash -14465935, now seen corresponding path program 2 times [2021-11-19 15:47:46,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:47:46,190 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596784509] [2021-11-19 15:47:46,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:47:46,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:47:46,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:47:46,323 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:47:46,323 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:47:46,324 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596784509] [2021-11-19 15:47:46,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596784509] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 15:47:46,324 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839250184] [2021-11-19 15:47:46,324 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 15:47:46,324 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 15:47:46,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd95685c-3579-4c29-a448-6929f6590dfb/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:47:46,326 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd95685c-3579-4c29-a448-6929f6590dfb/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 15:47:46,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd95685c-3579-4c29-a448-6929f6590dfb/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-19 15:47:46,373 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-19 15:47:46,374 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 15:47:46,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 15:47:46,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:47:46,522 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:47:46,522 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:47:46,712 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:47:46,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839250184] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:47:46,712 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1568145907] [2021-11-19 15:47:46,714 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2021-11-19 15:47:46,714 INFO L166 IcfgInterpreter]: Building call graph [2021-11-19 15:47:46,715 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-19 15:47:46,715 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-19 15:47:46,715 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-19 15:47:46,721 INFO L180 QuantifierPusher]: treesize reduction 8, result has 80.5 percent of original size [2021-11-19 15:47:46,723 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-19 15:47:46,726 INFO L180 QuantifierPusher]: treesize reduction 32, result has 45.8 percent of original size [2021-11-19 15:47:46,727 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-19 15:47:46,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:46,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:46,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:46,741 INFO L180 QuantifierPusher]: treesize reduction 12, result has 86.2 percent of original size [2021-11-19 15:47:46,746 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-11-19 15:47:46,749 INFO L180 QuantifierPusher]: treesize reduction 31, result has 69.6 percent of original size [2021-11-19 15:47:46,752 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-11-19 15:47:46,754 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:46,763 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:46,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:46,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:46,766 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:46,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:46,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:46,773 INFO L180 QuantifierPusher]: treesize reduction 17, result has 66.0 percent of original size [2021-11-19 15:47:46,775 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-19 15:47:46,777 INFO L180 QuantifierPusher]: treesize reduction 27, result has 50.9 percent of original size [2021-11-19 15:47:46,779 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-11-19 15:47:46,783 INFO L180 QuantifierPusher]: treesize reduction 17, result has 66.0 percent of original size [2021-11-19 15:47:46,785 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-19 15:47:46,792 INFO L180 QuantifierPusher]: treesize reduction 27, result has 50.9 percent of original size [2021-11-19 15:47:46,793 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-11-19 15:47:46,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:46,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:46,799 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:46,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:46,809 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-19 15:47:47,216 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 15:47:47,216 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 15:47:47,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2021-11-19 15:47:47,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317161953] [2021-11-19 15:47:47,217 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 15:47:47,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 15:47:47,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:47:47,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 15:47:47,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=346, Unknown=0, NotChecked=0, Total=462 [2021-11-19 15:47:47,220 INFO L87 Difference]: Start difference. First operand 27375 states and 39070 transitions. Second operand has 12 states, 11 states have (on average 8.181818181818182) internal successors, (90), 11 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:47:48,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:47:48,919 INFO L93 Difference]: Finished difference Result 93112 states and 136145 transitions. [2021-11-19 15:47:48,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 15:47:48,922 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.181818181818182) internal successors, (90), 11 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-11-19 15:47:48,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:47:49,300 INFO L225 Difference]: With dead ends: 93112 [2021-11-19 15:47:49,301 INFO L226 Difference]: Without dead ends: 93110 [2021-11-19 15:47:49,350 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=116, Invalid=346, Unknown=0, NotChecked=0, Total=462 [2021-11-19 15:47:49,351 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 319 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 15:47:49,351 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [319 Valid, 222 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 15:47:49,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93110 states. [2021-11-19 15:47:51,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93110 to 58897. [2021-11-19 15:47:51,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58897 states, 58891 states have (on average 1.4050703842692431) internal successors, (82746), 58896 states have internal predecessors, (82746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:47:52,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58897 states to 58897 states and 82746 transitions. [2021-11-19 15:47:52,312 INFO L78 Accepts]: Start accepts. Automaton has 58897 states and 82746 transitions. Word has length 45 [2021-11-19 15:47:52,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:47:52,321 INFO L470 AbstractCegarLoop]: Abstraction has 58897 states and 82746 transitions. [2021-11-19 15:47:52,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.181818181818182) internal successors, (90), 11 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:47:52,321 INFO L276 IsEmpty]: Start isEmpty. Operand 58897 states and 82746 transitions. [2021-11-19 15:47:52,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-19 15:47:52,335 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:47:52,335 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 1, 1] [2021-11-19 15:47:52,362 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd95685c-3579-4c29-a448-6929f6590dfb/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-19 15:47:52,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd95685c-3579-4c29-a448-6929f6590dfb/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 15:47:52,538 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-19 15:47:52,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:47:52,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1069468473, now seen corresponding path program 2 times [2021-11-19 15:47:52,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:47:52,539 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564314581] [2021-11-19 15:47:52,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:47:52,539 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:47:52,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:47:52,639 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:47:52,639 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:47:52,639 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564314581] [2021-11-19 15:47:52,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564314581] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 15:47:52,640 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276985188] [2021-11-19 15:47:52,640 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 15:47:52,640 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 15:47:52,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd95685c-3579-4c29-a448-6929f6590dfb/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:47:52,658 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd95685c-3579-4c29-a448-6929f6590dfb/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 15:47:52,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd95685c-3579-4c29-a448-6929f6590dfb/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-19 15:47:52,722 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-11-19 15:47:52,723 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 15:47:52,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 15:47:52,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:47:52,946 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:47:52,946 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:47:53,252 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:47:53,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [276985188] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:47:53,253 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [420358983] [2021-11-19 15:47:53,255 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-19 15:47:53,255 INFO L166 IcfgInterpreter]: Building call graph [2021-11-19 15:47:53,256 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-19 15:47:53,256 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-19 15:47:53,256 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-19 15:47:53,262 INFO L180 QuantifierPusher]: treesize reduction 8, result has 80.5 percent of original size [2021-11-19 15:47:53,265 INFO L185 QuantifierPusher]: treesize reduction 3, result has 87.5 percent of original size 21 [2021-11-19 15:47:53,267 INFO L180 QuantifierPusher]: treesize reduction 29, result has 43.1 percent of original size [2021-11-19 15:47:53,269 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-19 15:47:53,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:53,275 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:53,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:53,285 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.9 percent of original size [2021-11-19 15:47:53,291 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-11-19 15:47:53,294 INFO L180 QuantifierPusher]: treesize reduction 25, result has 75.0 percent of original size [2021-11-19 15:47:53,298 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-11-19 15:47:53,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:53,309 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:53,311 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:53,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:53,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:53,314 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:53,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:53,320 INFO L180 QuantifierPusher]: treesize reduction 17, result has 66.0 percent of original size [2021-11-19 15:47:53,328 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-19 15:47:53,331 INFO L180 QuantifierPusher]: treesize reduction 21, result has 58.8 percent of original size [2021-11-19 15:47:53,332 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-19 15:47:53,337 INFO L180 QuantifierPusher]: treesize reduction 17, result has 66.0 percent of original size [2021-11-19 15:47:53,339 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-19 15:47:53,345 INFO L180 QuantifierPusher]: treesize reduction 21, result has 58.8 percent of original size [2021-11-19 15:47:53,347 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-19 15:47:53,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:53,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:53,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:53,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:47:53,362 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-19 15:47:53,835 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 15:47:53,835 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 15:47:53,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2021-11-19 15:47:53,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373171720] [2021-11-19 15:47:53,836 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 15:47:53,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-19 15:47:53,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:47:53,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-19 15:47:53,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=399, Unknown=0, NotChecked=0, Total=552 [2021-11-19 15:47:53,838 INFO L87 Difference]: Start difference. First operand 58897 states and 82746 transitions. Second operand has 16 states, 15 states have (on average 7.6) internal successors, (114), 15 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:47:56,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:47:56,701 INFO L93 Difference]: Finished difference Result 207476 states and 294184 transitions. [2021-11-19 15:47:56,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-19 15:47:56,701 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 7.6) internal successors, (114), 15 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-19 15:47:56,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:47:57,619 INFO L225 Difference]: With dead ends: 207476 [2021-11-19 15:47:57,619 INFO L226 Difference]: Without dead ends: 207475 [2021-11-19 15:47:57,669 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 147 SyntacticMatches, 7 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=153, Invalid=399, Unknown=0, NotChecked=0, Total=552 [2021-11-19 15:47:57,671 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 674 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 674 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:47:57,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [674 Valid, 301 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 15:47:57,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207475 states. [2021-11-19 15:48:01,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207475 to 115067. [2021-11-19 15:48:01,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115067 states, 115061 states have (on average 1.3967895290324264) internal successors, (160716), 115066 states have internal predecessors, (160716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:48:01,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115067 states to 115067 states and 160716 transitions. [2021-11-19 15:48:01,815 INFO L78 Accepts]: Start accepts. Automaton has 115067 states and 160716 transitions. Word has length 57 [2021-11-19 15:48:01,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:48:01,815 INFO L470 AbstractCegarLoop]: Abstraction has 115067 states and 160716 transitions. [2021-11-19 15:48:01,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 7.6) internal successors, (114), 15 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:48:01,816 INFO L276 IsEmpty]: Start isEmpty. Operand 115067 states and 160716 transitions. [2021-11-19 15:48:01,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-19 15:48:01,829 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:48:01,829 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 1, 1] [2021-11-19 15:48:01,876 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd95685c-3579-4c29-a448-6929f6590dfb/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-19 15:48:02,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd95685c-3579-4c29-a448-6929f6590dfb/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable170 [2021-11-19 15:48:02,042 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-19 15:48:02,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:48:02,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1605996634, now seen corresponding path program 2 times [2021-11-19 15:48:02,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:48:02,043 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413872757] [2021-11-19 15:48:02,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:48:02,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:48:02,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:48:02,172 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:48:02,172 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:48:02,172 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413872757] [2021-11-19 15:48:02,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413872757] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 15:48:02,172 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651204583] [2021-11-19 15:48:02,172 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 15:48:02,173 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 15:48:02,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd95685c-3579-4c29-a448-6929f6590dfb/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:48:02,174 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd95685c-3579-4c29-a448-6929f6590dfb/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 15:48:02,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd95685c-3579-4c29-a448-6929f6590dfb/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-19 15:48:02,220 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-11-19 15:48:02,220 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 15:48:02,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 15:48:02,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:48:02,417 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:48:02,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:48:02,694 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:48:02,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [651204583] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:48:02,694 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1731754765] [2021-11-19 15:48:02,696 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2021-11-19 15:48:02,697 INFO L166 IcfgInterpreter]: Building call graph [2021-11-19 15:48:02,697 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-19 15:48:02,697 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-19 15:48:02,697 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-19 15:48:02,708 INFO L180 QuantifierPusher]: treesize reduction 8, result has 80.5 percent of original size [2021-11-19 15:48:02,725 INFO L185 QuantifierPusher]: treesize reduction 3, result has 87.5 percent of original size 21 [2021-11-19 15:48:02,728 INFO L180 QuantifierPusher]: treesize reduction 37, result has 37.3 percent of original size [2021-11-19 15:48:02,729 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-19 15:48:02,731 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:48:02,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:48:02,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:48:02,748 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.9 percent of original size [2021-11-19 15:48:02,751 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-11-19 15:48:02,758 INFO L180 QuantifierPusher]: treesize reduction 33, result has 69.4 percent of original size [2021-11-19 15:48:02,761 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-11-19 15:48:02,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:48:02,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:48:02,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:48:02,773 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:48:02,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:48:02,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:48:02,777 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:48:02,780 INFO L180 QuantifierPusher]: treesize reduction 17, result has 66.0 percent of original size [2021-11-19 15:48:02,782 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-19 15:48:02,784 INFO L180 QuantifierPusher]: treesize reduction 29, result has 50.8 percent of original size [2021-11-19 15:48:02,786 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-19 15:48:02,790 INFO L180 QuantifierPusher]: treesize reduction 17, result has 66.0 percent of original size [2021-11-19 15:48:02,792 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-19 15:48:02,799 INFO L180 QuantifierPusher]: treesize reduction 29, result has 50.8 percent of original size [2021-11-19 15:48:02,800 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-19 15:48:02,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:48:02,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:48:02,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:48:02,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:48:02,813 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-19 15:48:03,478 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 15:48:03,479 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 15:48:03,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2021-11-19 15:48:03,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179184220] [2021-11-19 15:48:03,479 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 15:48:03,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-19 15:48:03,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:48:03,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-19 15:48:03,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=439, Unknown=0, NotChecked=0, Total=600 [2021-11-19 15:48:03,481 INFO L87 Difference]: Start difference. First operand 115067 states and 160716 transitions. Second operand has 16 states, 15 states have (on average 9.466666666666667) internal successors, (142), 15 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:48:09,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:48:09,273 INFO L93 Difference]: Finished difference Result 405128 states and 571168 transitions. [2021-11-19 15:48:09,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-19 15:48:09,273 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 9.466666666666667) internal successors, (142), 15 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-19 15:48:09,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:48:10,119 INFO L225 Difference]: With dead ends: 405128 [2021-11-19 15:48:10,120 INFO L226 Difference]: Without dead ends: 405127 [2021-11-19 15:48:10,238 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 181 SyntacticMatches, 14 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 457 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=161, Invalid=439, Unknown=0, NotChecked=0, Total=600 [2021-11-19 15:48:10,240 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 320 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 15:48:10,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [320 Valid, 301 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 15:48:10,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405127 states. [2021-11-19 15:48:18,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405127 to 224757. [2021-11-19 15:48:18,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224757 states, 224751 states have (on average 1.3887635650119465) internal successors, (312126), 224756 states have internal predecessors, (312126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:48:18,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224757 states to 224757 states and 312126 transitions. [2021-11-19 15:48:18,987 INFO L78 Accepts]: Start accepts. Automaton has 224757 states and 312126 transitions. Word has length 71 [2021-11-19 15:48:18,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:48:18,988 INFO L470 AbstractCegarLoop]: Abstraction has 224757 states and 312126 transitions. [2021-11-19 15:48:18,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 9.466666666666667) internal successors, (142), 15 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:48:18,988 INFO L276 IsEmpty]: Start isEmpty. Operand 224757 states and 312126 transitions. [2021-11-19 15:48:19,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-19 15:48:19,002 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:48:19,002 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 10, 10, 1, 1] [2021-11-19 15:48:19,045 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd95685c-3579-4c29-a448-6929f6590dfb/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-11-19 15:48:19,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd95685c-3579-4c29-a448-6929f6590dfb/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 15:48:19,229 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-19 15:48:19,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:48:19,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1165827000, now seen corresponding path program 3 times [2021-11-19 15:48:19,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:48:19,230 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121487898] [2021-11-19 15:48:19,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:48:19,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:48:19,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:48:19,414 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 0 proven. 375 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:48:19,415 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:48:19,415 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121487898] [2021-11-19 15:48:19,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121487898] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 15:48:19,415 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179563631] [2021-11-19 15:48:19,416 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-19 15:48:19,416 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 15:48:19,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd95685c-3579-4c29-a448-6929f6590dfb/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:48:19,417 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd95685c-3579-4c29-a448-6929f6590dfb/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 15:48:19,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd95685c-3579-4c29-a448-6929f6590dfb/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-19 15:48:19,476 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-19 15:48:19,476 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 15:48:19,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-19 15:48:19,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:48:20,091 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 375 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:48:20,092 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:48:20,537 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 375 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:48:20,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [179563631] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:48:20,538 INFO L186 FreeRefinementEngine]: Found 2 perfect and 1 imperfect interpolant sequences. [2021-11-19 15:48:20,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [11] total 34 [2021-11-19 15:48:20,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95789458] [2021-11-19 15:48:20,539 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:48:20,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-19 15:48:20,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:48:20,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-19 15:48:20,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=298, Invalid=892, Unknown=0, NotChecked=0, Total=1190 [2021-11-19 15:48:20,541 INFO L87 Difference]: Start difference. First operand 224757 states and 312126 transitions. Second operand has 24 states, 24 states have (on average 6.208333333333333) internal successors, (149), 23 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:48:23,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:48:23,553 INFO L93 Difference]: Finished difference Result 243071 states and 336740 transitions. [2021-11-19 15:48:23,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-19 15:48:23,553 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 6.208333333333333) internal successors, (149), 23 states have internal predecessors, (149), 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 77 [2021-11-19 15:48:23,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:48:23,554 INFO L225 Difference]: With dead ends: 243071 [2021-11-19 15:48:23,554 INFO L226 Difference]: Without dead ends: 0 [2021-11-19 15:48:23,676 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 385 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=298, Invalid=892, Unknown=0, NotChecked=0, Total=1190 [2021-11-19 15:48:23,678 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 200 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 810 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:48:23,678 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [200 Valid, 810 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 15:48:23,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-19 15:48:23,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-19 15:48:23,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:48:23,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-19 15:48:23,682 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 77 [2021-11-19 15:48:23,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:48:23,682 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-19 15:48:23,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.208333333333333) internal successors, (149), 23 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:48:23,683 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-19 15:48:23,683 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-19 15:48:23,687 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 10 remaining) [2021-11-19 15:48:23,687 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2021-11-19 15:48:23,688 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2021-11-19 15:48:23,688 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2021-11-19 15:48:23,688 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2021-11-19 15:48:23,688 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2021-11-19 15:48:23,689 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2021-11-19 15:48:23,689 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2021-11-19 15:48:23,690 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2021-11-19 15:48:23,691 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 10 remaining) [2021-11-19 15:48:23,738 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd95685c-3579-4c29-a448-6929f6590dfb/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-11-19 15:48:23,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd95685c-3579-4c29-a448-6929f6590dfb/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable200 [2021-11-19 15:48:23,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.