./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/HarrisLalNoriRajamani-SAS2010-Fig1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feee4952-3e8d-47e4-a0b6-fdc76f7f4bcc/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feee4952-3e8d-47e4-a0b6-fdc76f7f4bcc/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feee4952-3e8d-47e4-a0b6-fdc76f7f4bcc/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feee4952-3e8d-47e4-a0b6-fdc76f7f4bcc/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/HarrisLalNoriRajamani-SAS2010-Fig1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feee4952-3e8d-47e4-a0b6-fdc76f7f4bcc/bin/utaipan-UUZaoUuFF8/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feee4952-3e8d-47e4-a0b6-fdc76f7f4bcc/bin/utaipan-UUZaoUuFF8 --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 de331d1f778f147a4d32c0286c0018cb5b5cf61f2b6c0952b6bed68b0f715eaf --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:08:31,857 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:08:31,860 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:08:31,898 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:08:31,899 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:08:31,901 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:08:31,904 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:08:31,907 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:08:31,910 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:08:31,912 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:08:31,914 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:08:31,916 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:08:31,917 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:08:31,919 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:08:31,922 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:08:31,924 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:08:31,926 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:08:31,927 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:08:31,931 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:08:31,934 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:08:31,937 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:08:31,939 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:08:31,941 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:08:31,943 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:08:31,948 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:08:31,948 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:08:31,949 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:08:31,951 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:08:31,952 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:08:31,953 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:08:31,954 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:08:31,956 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:08:31,957 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:08:31,959 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:08:31,961 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:08:31,961 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:08:31,962 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:08:31,963 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:08:31,963 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:08:31,965 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:08:31,966 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:08:31,967 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feee4952-3e8d-47e4-a0b6-fdc76f7f4bcc/bin/utaipan-UUZaoUuFF8/config/svcomp-Overflow-64bit-Taipan_Default.epf [2021-11-07 02:08:32,000 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:08:32,000 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:08:32,002 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:08:32,002 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:08:32,002 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:08:32,003 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:08:32,003 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 02:08:32,003 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:08:32,003 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:08:32,004 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 02:08:32,004 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 02:08:32,004 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:08:32,005 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 02:08:32,005 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 02:08:32,005 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 02:08:32,006 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:08:32,007 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-07 02:08:32,007 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 02:08:32,007 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:08:32,008 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:08:32,008 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:08:32,008 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:08:32,009 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-07 02:08:32,009 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:08:32,009 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:08:32,009 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:08:32,010 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:08:32,010 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:08:32,010 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:08:32,011 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:08:32,011 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:08:32,011 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:08:32,012 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 02:08:32,012 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 02:08:32,012 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:08:32,013 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:08:32,013 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:08:32,013 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_feee4952-3e8d-47e4-a0b6-fdc76f7f4bcc/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feee4952-3e8d-47e4-a0b6-fdc76f7f4bcc/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de331d1f778f147a4d32c0286c0018cb5b5cf61f2b6c0952b6bed68b0f715eaf [2021-11-07 02:08:32,315 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:08:32,342 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:08:32,346 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:08:32,348 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:08:32,350 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:08:32,351 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feee4952-3e8d-47e4-a0b6-fdc76f7f4bcc/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/termination-crafted-lit/HarrisLalNoriRajamani-SAS2010-Fig1.c [2021-11-07 02:08:32,476 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feee4952-3e8d-47e4-a0b6-fdc76f7f4bcc/bin/utaipan-UUZaoUuFF8/data/80eba4e30/12a861b5da4941cba4cf51803be47986/FLAG6e17043e4 [2021-11-07 02:08:33,102 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:08:33,102 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feee4952-3e8d-47e4-a0b6-fdc76f7f4bcc/sv-benchmarks/c/termination-crafted-lit/HarrisLalNoriRajamani-SAS2010-Fig1.c [2021-11-07 02:08:33,110 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feee4952-3e8d-47e4-a0b6-fdc76f7f4bcc/bin/utaipan-UUZaoUuFF8/data/80eba4e30/12a861b5da4941cba4cf51803be47986/FLAG6e17043e4 [2021-11-07 02:08:33,490 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feee4952-3e8d-47e4-a0b6-fdc76f7f4bcc/bin/utaipan-UUZaoUuFF8/data/80eba4e30/12a861b5da4941cba4cf51803be47986 [2021-11-07 02:08:33,506 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:08:33,508 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:08:33,521 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:08:33,521 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:08:33,525 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:08:33,525 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:08:33" (1/1) ... [2021-11-07 02:08:33,527 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@207e3797 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:33, skipping insertion in model container [2021-11-07 02:08:33,527 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:08:33" (1/1) ... [2021-11-07 02:08:33,536 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:08:33,554 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:08:33,777 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:08:33,781 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 02:08:33,798 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:08:33,813 INFO L208 MainTranslator]: Completed translation [2021-11-07 02:08:33,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:33 WrapperNode [2021-11-07 02:08:33,814 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:08:33,815 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 02:08:33,815 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 02:08:33,815 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 02:08:33,825 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:33" (1/1) ... [2021-11-07 02:08:33,832 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:33" (1/1) ... [2021-11-07 02:08:33,878 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 02:08:33,879 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 02:08:33,879 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 02:08:33,879 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 02:08:33,891 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:33" (1/1) ... [2021-11-07 02:08:33,891 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:33" (1/1) ... [2021-11-07 02:08:33,893 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:33" (1/1) ... [2021-11-07 02:08:33,893 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:33" (1/1) ... [2021-11-07 02:08:33,897 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:33" (1/1) ... [2021-11-07 02:08:33,903 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:33" (1/1) ... [2021-11-07 02:08:33,905 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:33" (1/1) ... [2021-11-07 02:08:33,907 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 02:08:33,908 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 02:08:33,908 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 02:08:33,909 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 02:08:33,910 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:33" (1/1) ... [2021-11-07 02:08:33,920 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:08:33,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feee4952-3e8d-47e4-a0b6-fdc76f7f4bcc/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:08:33,950 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feee4952-3e8d-47e4-a0b6-fdc76f7f4bcc/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 02:08:33,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feee4952-3e8d-47e4-a0b6-fdc76f7f4bcc/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 02:08:34,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 02:08:34,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 02:08:34,408 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 02:08:34,409 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-11-07 02:08:34,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:08:34 BoogieIcfgContainer [2021-11-07 02:08:34,428 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 02:08:34,430 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 02:08:34,430 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 02:08:34,436 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 02:08:34,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:08:33" (1/3) ... [2021-11-07 02:08:34,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c93f77e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:08:34, skipping insertion in model container [2021-11-07 02:08:34,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:08:33" (2/3) ... [2021-11-07 02:08:34,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c93f77e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:08:34, skipping insertion in model container [2021-11-07 02:08:34,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:08:34" (3/3) ... [2021-11-07 02:08:34,449 INFO L111 eAbstractionObserver]: Analyzing ICFG HarrisLalNoriRajamani-SAS2010-Fig1.c [2021-11-07 02:08:34,456 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 02:08:34,456 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2021-11-07 02:08:34,522 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 02:08:34,531 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 [2021-11-07 02:08:34,531 INFO L340 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2021-11-07 02:08:34,558 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 43 states have internal predecessors, (52), 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) [2021-11-07 02:08:34,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-07 02:08:34,564 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:08:34,565 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-07 02:08:34,566 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-07 02:08:34,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:08:34,581 INFO L85 PathProgramCache]: Analyzing trace with hash 29681062, now seen corresponding path program 1 times [2021-11-07 02:08:34,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 02:08:34,593 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588978294] [2021-11-07 02:08:34,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:34,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 02:08:34,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:34,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:34,755 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 02:08:34,756 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588978294] [2021-11-07 02:08:34,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588978294] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 02:08:34,757 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:08:34,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 02:08:34,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156250162] [2021-11-07 02:08:34,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:08:34,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 02:08:34,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:08:34,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:08:34,785 INFO L87 Difference]: Start difference. First operand has 44 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 43 states have internal predecessors, (52), 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 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2021-11-07 02:08:34,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:08:34,951 INFO L93 Difference]: Finished difference Result 80 states and 97 transitions. [2021-11-07 02:08:34,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:08:34,953 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2021-11-07 02:08:34,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:08:34,963 INFO L225 Difference]: With dead ends: 80 [2021-11-07 02:08:34,964 INFO L226 Difference]: Without dead ends: 72 [2021-11-07 02:08:34,966 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:08:34,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-11-07 02:08:34,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 62. [2021-11-07 02:08:35,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 46 states have (on average 1.7608695652173914) internal successors, (81), 61 states have internal predecessors, (81), 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) [2021-11-07 02:08:35,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 81 transitions. [2021-11-07 02:08:35,005 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 81 transitions. Word has length 5 [2021-11-07 02:08:35,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:08:35,006 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 81 transitions. [2021-11-07 02:08:35,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2021-11-07 02:08:35,006 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 81 transitions. [2021-11-07 02:08:35,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-07 02:08:35,007 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:08:35,007 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-07 02:08:35,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 02:08:35,008 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-07 02:08:35,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:08:35,009 INFO L85 PathProgramCache]: Analyzing trace with hash 920112974, now seen corresponding path program 1 times [2021-11-07 02:08:35,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 02:08:35,010 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866597125] [2021-11-07 02:08:35,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:35,011 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 02:08:35,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:35,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:35,044 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 02:08:35,044 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866597125] [2021-11-07 02:08:35,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866597125] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 02:08:35,045 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:08:35,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 02:08:35,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136527427] [2021-11-07 02:08:35,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:08:35,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 02:08:35,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:08:35,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:08:35,050 INFO L87 Difference]: Start difference. First operand 62 states and 81 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:35,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:08:35,106 INFO L93 Difference]: Finished difference Result 104 states and 139 transitions. [2021-11-07 02:08:35,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:08:35,107 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-07 02:08:35,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:08:35,109 INFO L225 Difference]: With dead ends: 104 [2021-11-07 02:08:35,109 INFO L226 Difference]: Without dead ends: 100 [2021-11-07 02:08:35,111 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:08:35,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-11-07 02:08:35,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 92. [2021-11-07 02:08:35,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 78 states have (on average 1.705128205128205) internal successors, (133), 91 states have internal predecessors, (133), 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) [2021-11-07 02:08:35,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 133 transitions. [2021-11-07 02:08:35,127 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 133 transitions. Word has length 6 [2021-11-07 02:08:35,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:08:35,128 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 133 transitions. [2021-11-07 02:08:35,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:35,128 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 133 transitions. [2021-11-07 02:08:35,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-07 02:08:35,129 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:08:35,129 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:08:35,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 02:08:35,130 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-07 02:08:35,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:08:35,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1538395946, now seen corresponding path program 1 times [2021-11-07 02:08:35,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 02:08:35,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072693057] [2021-11-07 02:08:35,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:35,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 02:08:35,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:35,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:35,195 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 02:08:35,195 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072693057] [2021-11-07 02:08:35,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072693057] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 02:08:35,196 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:08:35,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 02:08:35,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883360192] [2021-11-07 02:08:35,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:08:35,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 02:08:35,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:08:35,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:08:35,199 INFO L87 Difference]: Start difference. First operand 92 states and 133 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:35,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:08:35,237 INFO L93 Difference]: Finished difference Result 92 states and 133 transitions. [2021-11-07 02:08:35,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:08:35,238 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-07 02:08:35,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:08:35,241 INFO L225 Difference]: With dead ends: 92 [2021-11-07 02:08:35,241 INFO L226 Difference]: Without dead ends: 91 [2021-11-07 02:08:35,242 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:08:35,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-11-07 02:08:35,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2021-11-07 02:08:35,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 78 states have (on average 1.6538461538461537) internal successors, (129), 90 states have internal predecessors, (129), 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) [2021-11-07 02:08:35,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 129 transitions. [2021-11-07 02:08:35,256 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 129 transitions. Word has length 7 [2021-11-07 02:08:35,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:08:35,257 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 129 transitions. [2021-11-07 02:08:35,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:35,257 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 129 transitions. [2021-11-07 02:08:35,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-07 02:08:35,258 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:08:35,258 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:08:35,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 02:08:35,259 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-07 02:08:35,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:08:35,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1538395595, now seen corresponding path program 1 times [2021-11-07 02:08:35,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 02:08:35,260 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907414746] [2021-11-07 02:08:35,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:35,261 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 02:08:35,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:35,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:35,343 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 02:08:35,344 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907414746] [2021-11-07 02:08:35,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907414746] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 02:08:35,344 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:08:35,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 02:08:35,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618744260] [2021-11-07 02:08:35,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:08:35,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 02:08:35,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:08:35,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:08:35,347 INFO L87 Difference]: Start difference. First operand 91 states and 129 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:35,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:08:35,404 INFO L93 Difference]: Finished difference Result 91 states and 129 transitions. [2021-11-07 02:08:35,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:08:35,406 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-07 02:08:35,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:08:35,410 INFO L225 Difference]: With dead ends: 91 [2021-11-07 02:08:35,410 INFO L226 Difference]: Without dead ends: 90 [2021-11-07 02:08:35,411 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:08:35,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-11-07 02:08:35,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2021-11-07 02:08:35,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 78 states have (on average 1.6025641025641026) internal successors, (125), 89 states have internal predecessors, (125), 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) [2021-11-07 02:08:35,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 125 transitions. [2021-11-07 02:08:35,438 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 125 transitions. Word has length 7 [2021-11-07 02:08:35,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:08:35,445 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 125 transitions. [2021-11-07 02:08:35,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:35,446 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 125 transitions. [2021-11-07 02:08:35,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-07 02:08:35,446 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:08:35,446 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:08:35,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 02:08:35,447 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-07 02:08:35,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:08:35,448 INFO L85 PathProgramCache]: Analyzing trace with hash 27918859, now seen corresponding path program 1 times [2021-11-07 02:08:35,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 02:08:35,448 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721232161] [2021-11-07 02:08:35,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:35,449 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 02:08:35,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:35,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:35,485 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 02:08:35,486 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721232161] [2021-11-07 02:08:35,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721232161] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 02:08:35,486 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:08:35,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 02:08:35,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883880836] [2021-11-07 02:08:35,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:08:35,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 02:08:35,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:08:35,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:08:35,489 INFO L87 Difference]: Start difference. First operand 90 states and 125 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:35,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:08:35,530 INFO L93 Difference]: Finished difference Result 105 states and 147 transitions. [2021-11-07 02:08:35,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:08:35,531 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-07 02:08:35,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:08:35,533 INFO L225 Difference]: With dead ends: 105 [2021-11-07 02:08:35,533 INFO L226 Difference]: Without dead ends: 104 [2021-11-07 02:08:35,533 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:08:35,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-11-07 02:08:35,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 96. [2021-11-07 02:08:35,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 84 states have (on average 1.5833333333333333) internal successors, (133), 95 states have internal predecessors, (133), 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) [2021-11-07 02:08:35,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 133 transitions. [2021-11-07 02:08:35,544 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 133 transitions. Word has length 7 [2021-11-07 02:08:35,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:08:35,544 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 133 transitions. [2021-11-07 02:08:35,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:35,545 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 133 transitions. [2021-11-07 02:08:35,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-07 02:08:35,546 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:08:35,546 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:08:35,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 02:08:35,547 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-07 02:08:35,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:08:35,547 INFO L85 PathProgramCache]: Analyzing trace with hash 27918508, now seen corresponding path program 1 times [2021-11-07 02:08:35,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 02:08:35,548 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512727018] [2021-11-07 02:08:35,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:35,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 02:08:35,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:35,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:35,612 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 02:08:35,613 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512727018] [2021-11-07 02:08:35,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512727018] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 02:08:35,613 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:08:35,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 02:08:35,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102528064] [2021-11-07 02:08:35,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:08:35,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 02:08:35,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:08:35,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:08:35,616 INFO L87 Difference]: Start difference. First operand 96 states and 133 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:35,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:08:35,678 INFO L93 Difference]: Finished difference Result 99 states and 133 transitions. [2021-11-07 02:08:35,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:08:35,679 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-07 02:08:35,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:08:35,684 INFO L225 Difference]: With dead ends: 99 [2021-11-07 02:08:35,684 INFO L226 Difference]: Without dead ends: 98 [2021-11-07 02:08:35,685 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:08:35,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-11-07 02:08:35,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2021-11-07 02:08:35,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 84 states have (on average 1.5595238095238095) internal successors, (131), 95 states have internal predecessors, (131), 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) [2021-11-07 02:08:35,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 131 transitions. [2021-11-07 02:08:35,698 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 131 transitions. Word has length 7 [2021-11-07 02:08:35,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:08:35,699 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 131 transitions. [2021-11-07 02:08:35,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:35,699 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 131 transitions. [2021-11-07 02:08:35,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 02:08:35,700 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:08:35,700 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2021-11-07 02:08:35,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 02:08:35,701 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-07 02:08:35,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:08:35,702 INFO L85 PathProgramCache]: Analyzing trace with hash -534693424, now seen corresponding path program 1 times [2021-11-07 02:08:35,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 02:08:35,702 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555062779] [2021-11-07 02:08:35,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:35,703 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 02:08:35,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:35,770 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:35,771 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 02:08:35,771 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555062779] [2021-11-07 02:08:35,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555062779] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 02:08:35,772 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901311336] [2021-11-07 02:08:35,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:35,773 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:08:35,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feee4952-3e8d-47e4-a0b6-fdc76f7f4bcc/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:08:35,775 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feee4952-3e8d-47e4-a0b6-fdc76f7f4bcc/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:08:35,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feee4952-3e8d-47e4-a0b6-fdc76f7f4bcc/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 02:08:35,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:35,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:08:35,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:08:35,894 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:35,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:08:35,954 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:35,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1901311336] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:08:35,955 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [519166891] [2021-11-07 02:08:35,985 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2021-11-07 02:08:35,986 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 02:08:36,000 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 02:08:36,008 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 02:08:36,009 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 02:08:36,089 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:36,098 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-07 02:08:36,111 INFO L180 QuantifierPusher]: treesize reduction 4, result has 93.2 percent of original size [2021-11-07 02:08:36,116 INFO L185 QuantifierPusher]: treesize reduction 5, result has 86.5 percent of original size 32 [2021-11-07 02:08:36,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:36,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:36,178 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:36,216 INFO L180 QuantifierPusher]: treesize reduction 9, result has 92.4 percent of original size [2021-11-07 02:08:36,228 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 135 [2021-11-07 02:08:36,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:36,284 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:36,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:36,288 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:36,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:36,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:36,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:36,311 INFO L180 QuantifierPusher]: treesize reduction 6, result has 89.3 percent of original size [2021-11-07 02:08:36,316 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-11-07 02:08:36,324 INFO L180 QuantifierPusher]: treesize reduction 6, result has 89.3 percent of original size [2021-11-07 02:08:36,329 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-11-07 02:08:36,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:36,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:36,351 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:36,364 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:36,386 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 02:08:36,781 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 02:08:36,782 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 02:08:36,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2021-11-07 02:08:36,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265055653] [2021-11-07 02:08:36,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 02:08:36,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 02:08:36,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 02:08:36,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-11-07 02:08:36,784 INFO L87 Difference]: Start difference. First operand 96 states and 131 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:36,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:08:36,955 INFO L93 Difference]: Finished difference Result 246 states and 332 transitions. [2021-11-07 02:08:36,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 02:08:36,956 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-07 02:08:36,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:08:36,958 INFO L225 Difference]: With dead ends: 246 [2021-11-07 02:08:36,958 INFO L226 Difference]: Without dead ends: 242 [2021-11-07 02:08:36,960 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-11-07 02:08:36,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-11-07 02:08:36,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 114. [2021-11-07 02:08:36,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 102 states have (on average 1.5196078431372548) internal successors, (155), 113 states have internal predecessors, (155), 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) [2021-11-07 02:08:36,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 155 transitions. [2021-11-07 02:08:36,995 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 155 transitions. Word has length 8 [2021-11-07 02:08:36,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:08:36,996 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 155 transitions. [2021-11-07 02:08:36,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:36,996 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 155 transitions. [2021-11-07 02:08:36,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 02:08:36,997 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:08:36,999 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:08:37,043 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feee4952-3e8d-47e4-a0b6-fdc76f7f4bcc/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-07 02:08:37,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feee4952-3e8d-47e4-a0b6-fdc76f7f4bcc/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:08:37,200 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-07 02:08:37,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:08:37,201 INFO L85 PathProgramCache]: Analyzing trace with hash -445633999, now seen corresponding path program 1 times [2021-11-07 02:08:37,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 02:08:37,201 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364349748] [2021-11-07 02:08:37,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:37,202 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 02:08:37,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:37,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:37,254 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 02:08:37,254 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364349748] [2021-11-07 02:08:37,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364349748] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 02:08:37,255 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:08:37,255 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 02:08:37,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885308242] [2021-11-07 02:08:37,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:08:37,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 02:08:37,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:08:37,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:08:37,258 INFO L87 Difference]: Start difference. First operand 114 states and 155 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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) [2021-11-07 02:08:37,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:08:37,297 INFO L93 Difference]: Finished difference Result 118 states and 159 transitions. [2021-11-07 02:08:37,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:08:37,298 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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 [2021-11-07 02:08:37,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:08:37,301 INFO L225 Difference]: With dead ends: 118 [2021-11-07 02:08:37,302 INFO L226 Difference]: Without dead ends: 117 [2021-11-07 02:08:37,302 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:08:37,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-11-07 02:08:37,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 113. [2021-11-07 02:08:37,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 102 states have (on average 1.4803921568627452) internal successors, (151), 112 states have internal predecessors, (151), 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) [2021-11-07 02:08:37,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 151 transitions. [2021-11-07 02:08:37,317 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 151 transitions. Word has length 8 [2021-11-07 02:08:37,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:08:37,317 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 151 transitions. [2021-11-07 02:08:37,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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) [2021-11-07 02:08:37,318 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 151 transitions. [2021-11-07 02:08:37,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 02:08:37,320 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:08:37,320 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:08:37,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-07 02:08:37,321 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-07 02:08:37,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:08:37,323 INFO L85 PathProgramCache]: Analyzing trace with hash -445623108, now seen corresponding path program 1 times [2021-11-07 02:08:37,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 02:08:37,324 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049605966] [2021-11-07 02:08:37,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:37,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 02:08:37,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:37,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:37,382 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 02:08:37,387 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049605966] [2021-11-07 02:08:37,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049605966] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 02:08:37,387 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:08:37,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 02:08:37,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737357562] [2021-11-07 02:08:37,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:08:37,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 02:08:37,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:08:37,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:08:37,390 INFO L87 Difference]: Start difference. First operand 113 states and 151 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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) [2021-11-07 02:08:37,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:08:37,436 INFO L93 Difference]: Finished difference Result 113 states and 151 transitions. [2021-11-07 02:08:37,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:08:37,439 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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 [2021-11-07 02:08:37,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:08:37,440 INFO L225 Difference]: With dead ends: 113 [2021-11-07 02:08:37,441 INFO L226 Difference]: Without dead ends: 112 [2021-11-07 02:08:37,441 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:08:37,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-11-07 02:08:37,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2021-11-07 02:08:37,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 102 states have (on average 1.4411764705882353) internal successors, (147), 111 states have internal predecessors, (147), 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) [2021-11-07 02:08:37,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 147 transitions. [2021-11-07 02:08:37,446 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 147 transitions. Word has length 8 [2021-11-07 02:08:37,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:08:37,447 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 147 transitions. [2021-11-07 02:08:37,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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) [2021-11-07 02:08:37,447 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 147 transitions. [2021-11-07 02:08:37,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 02:08:37,449 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:08:37,449 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:08:37,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-07 02:08:37,450 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-07 02:08:37,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:08:37,455 INFO L85 PathProgramCache]: Analyzing trace with hash 865484763, now seen corresponding path program 1 times [2021-11-07 02:08:37,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 02:08:37,455 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174334681] [2021-11-07 02:08:37,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:37,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 02:08:37,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:37,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:37,512 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 02:08:37,513 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174334681] [2021-11-07 02:08:37,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174334681] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 02:08:37,513 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:08:37,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 02:08:37,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283572284] [2021-11-07 02:08:37,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:08:37,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 02:08:37,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:08:37,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:08:37,517 INFO L87 Difference]: Start difference. First operand 112 states and 147 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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) [2021-11-07 02:08:37,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:08:37,549 INFO L93 Difference]: Finished difference Result 112 states and 147 transitions. [2021-11-07 02:08:37,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:08:37,550 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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 [2021-11-07 02:08:37,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:08:37,552 INFO L225 Difference]: With dead ends: 112 [2021-11-07 02:08:37,552 INFO L226 Difference]: Without dead ends: 111 [2021-11-07 02:08:37,553 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 02:08:37,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-11-07 02:08:37,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2021-11-07 02:08:37,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 102 states have (on average 1.4019607843137254) internal successors, (143), 110 states have internal predecessors, (143), 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) [2021-11-07 02:08:37,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 143 transitions. [2021-11-07 02:08:37,557 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 143 transitions. Word has length 8 [2021-11-07 02:08:37,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:08:37,564 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 143 transitions. [2021-11-07 02:08:37,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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) [2021-11-07 02:08:37,565 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 143 transitions. [2021-11-07 02:08:37,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 02:08:37,571 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:08:37,572 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:08:37,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-07 02:08:37,572 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-07 02:08:37,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:08:37,573 INFO L85 PathProgramCache]: Analyzing trace with hash 865473872, now seen corresponding path program 1 times [2021-11-07 02:08:37,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 02:08:37,574 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529816111] [2021-11-07 02:08:37,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:37,574 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 02:08:37,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:37,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:37,615 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 02:08:37,619 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529816111] [2021-11-07 02:08:37,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529816111] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 02:08:37,619 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:08:37,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 02:08:37,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811430253] [2021-11-07 02:08:37,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:08:37,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 02:08:37,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:08:37,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:08:37,622 INFO L87 Difference]: Start difference. First operand 111 states and 143 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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) [2021-11-07 02:08:37,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:08:37,670 INFO L93 Difference]: Finished difference Result 117 states and 149 transitions. [2021-11-07 02:08:37,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:08:37,671 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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 [2021-11-07 02:08:37,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:08:37,674 INFO L225 Difference]: With dead ends: 117 [2021-11-07 02:08:37,674 INFO L226 Difference]: Without dead ends: 116 [2021-11-07 02:08:37,675 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 02:08:37,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-11-07 02:08:37,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 110. [2021-11-07 02:08:37,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 102 states have (on average 1.3627450980392157) internal successors, (139), 109 states have internal predecessors, (139), 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) [2021-11-07 02:08:37,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 139 transitions. [2021-11-07 02:08:37,681 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 139 transitions. Word has length 8 [2021-11-07 02:08:37,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:08:37,682 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 139 transitions. [2021-11-07 02:08:37,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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) [2021-11-07 02:08:37,682 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 139 transitions. [2021-11-07 02:08:37,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-07 02:08:37,686 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:08:37,686 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:08:37,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-07 02:08:37,687 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-07 02:08:37,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:08:37,687 INFO L85 PathProgramCache]: Analyzing trace with hash 968012283, now seen corresponding path program 1 times [2021-11-07 02:08:37,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 02:08:37,688 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693791655] [2021-11-07 02:08:37,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:37,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 02:08:37,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:37,775 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:37,776 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 02:08:37,776 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693791655] [2021-11-07 02:08:37,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693791655] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 02:08:37,776 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211852004] [2021-11-07 02:08:37,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:37,777 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:08:37,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feee4952-3e8d-47e4-a0b6-fdc76f7f4bcc/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:08:37,779 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feee4952-3e8d-47e4-a0b6-fdc76f7f4bcc/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:08:37,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feee4952-3e8d-47e4-a0b6-fdc76f7f4bcc/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 02:08:37,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:37,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:08:37,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:08:37,968 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:37,969 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:08:38,027 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:38,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [211852004] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-07 02:08:38,027 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:08:38,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 3] total 8 [2021-11-07 02:08:38,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177337213] [2021-11-07 02:08:38,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:08:38,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 02:08:38,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:08:38,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:08:38,030 INFO L87 Difference]: Start difference. First operand 110 states and 139 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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) [2021-11-07 02:08:38,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:08:38,072 INFO L93 Difference]: Finished difference Result 129 states and 163 transitions. [2021-11-07 02:08:38,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:08:38,073 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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 11 [2021-11-07 02:08:38,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:08:38,074 INFO L225 Difference]: With dead ends: 129 [2021-11-07 02:08:38,075 INFO L226 Difference]: Without dead ends: 128 [2021-11-07 02:08:38,075 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:08:38,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-11-07 02:08:38,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 103. [2021-11-07 02:08:38,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 96 states have (on average 1.3229166666666667) internal successors, (127), 102 states have internal predecessors, (127), 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) [2021-11-07 02:08:38,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 127 transitions. [2021-11-07 02:08:38,080 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 127 transitions. Word has length 11 [2021-11-07 02:08:38,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:08:38,080 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 127 transitions. [2021-11-07 02:08:38,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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) [2021-11-07 02:08:38,081 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 127 transitions. [2021-11-07 02:08:38,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-07 02:08:38,081 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:08:38,082 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:08:38,122 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feee4952-3e8d-47e4-a0b6-fdc76f7f4bcc/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-07 02:08:38,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feee4952-3e8d-47e4-a0b6-fdc76f7f4bcc/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-11-07 02:08:38,301 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-07 02:08:38,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:08:38,301 INFO L85 PathProgramCache]: Analyzing trace with hash -6406139, now seen corresponding path program 1 times [2021-11-07 02:08:38,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 02:08:38,301 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406745456] [2021-11-07 02:08:38,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:38,302 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 02:08:38,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:38,346 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:38,346 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 02:08:38,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406745456] [2021-11-07 02:08:38,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406745456] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 02:08:38,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880446309] [2021-11-07 02:08:38,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:38,348 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:08:38,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feee4952-3e8d-47e4-a0b6-fdc76f7f4bcc/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:08:38,349 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feee4952-3e8d-47e4-a0b6-fdc76f7f4bcc/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:08:38,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feee4952-3e8d-47e4-a0b6-fdc76f7f4bcc/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-07 02:08:38,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:38,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:08:38,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:08:38,569 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:38,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:08:38,658 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:38,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [880446309] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-07 02:08:38,659 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:08:38,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 3] total 8 [2021-11-07 02:08:38,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011540629] [2021-11-07 02:08:38,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:08:38,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 02:08:38,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:08:38,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:08:38,664 INFO L87 Difference]: Start difference. First operand 103 states and 127 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:38,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:08:38,697 INFO L93 Difference]: Finished difference Result 103 states and 127 transitions. [2021-11-07 02:08:38,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:08:38,698 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-07 02:08:38,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:08:38,699 INFO L225 Difference]: With dead ends: 103 [2021-11-07 02:08:38,700 INFO L226 Difference]: Without dead ends: 102 [2021-11-07 02:08:38,700 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:08:38,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-11-07 02:08:38,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2021-11-07 02:08:38,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 96 states have (on average 1.3020833333333333) internal successors, (125), 101 states have internal predecessors, (125), 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) [2021-11-07 02:08:38,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 125 transitions. [2021-11-07 02:08:38,706 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 125 transitions. Word has length 13 [2021-11-07 02:08:38,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:08:38,707 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 125 transitions. [2021-11-07 02:08:38,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:38,707 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 125 transitions. [2021-11-07 02:08:38,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-07 02:08:38,708 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:08:38,709 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-11-07 02:08:38,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feee4952-3e8d-47e4-a0b6-fdc76f7f4bcc/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-07 02:08:38,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feee4952-3e8d-47e4-a0b6-fdc76f7f4bcc/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-11-07 02:08:38,928 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-07 02:08:38,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:08:38,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1632870278, now seen corresponding path program 1 times [2021-11-07 02:08:38,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 02:08:38,929 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984108986] [2021-11-07 02:08:38,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:38,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 02:08:38,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:38,984 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:38,984 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 02:08:38,984 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984108986] [2021-11-07 02:08:38,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984108986] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 02:08:38,985 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629906028] [2021-11-07 02:08:38,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:38,985 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:08:38,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feee4952-3e8d-47e4-a0b6-fdc76f7f4bcc/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:08:38,987 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feee4952-3e8d-47e4-a0b6-fdc76f7f4bcc/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:08:39,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feee4952-3e8d-47e4-a0b6-fdc76f7f4bcc/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-07 02:08:39,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:39,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:08:39,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:08:39,141 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:39,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:08:39,208 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:39,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1629906028] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:08:39,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [168899951] [2021-11-07 02:08:39,212 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2021-11-07 02:08:39,212 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 02:08:39,212 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 02:08:39,213 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 02:08:39,213 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 02:08:39,223 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:39,227 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-07 02:08:39,234 INFO L180 QuantifierPusher]: treesize reduction 15, result has 75.4 percent of original size [2021-11-07 02:08:39,238 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-07 02:08:39,242 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:39,252 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-11-07 02:08:39,260 INFO L180 QuantifierPusher]: treesize reduction 8, result has 86.9 percent of original size [2021-11-07 02:08:39,270 INFO L185 QuantifierPusher]: treesize reduction 5, result has 89.8 percent of original size 44 [2021-11-07 02:08:39,274 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:39,280 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:39,298 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:39,330 INFO L180 QuantifierPusher]: treesize reduction 15, result has 85.6 percent of original size [2021-11-07 02:08:39,344 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-11-07 02:08:39,349 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:39,360 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-11-07 02:08:39,370 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.2 percent of original size [2021-11-07 02:08:39,380 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-07 02:08:39,384 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:39,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:39,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:39,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:39,419 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:39,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:39,434 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:39,446 INFO L180 QuantifierPusher]: treesize reduction 16, result has 74.2 percent of original size [2021-11-07 02:08:39,450 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-07 02:08:39,456 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:39,464 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-11-07 02:08:39,468 INFO L180 QuantifierPusher]: treesize reduction 3, result has 95.1 percent of original size [2021-11-07 02:08:39,473 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-11-07 02:08:39,484 INFO L180 QuantifierPusher]: treesize reduction 16, result has 74.2 percent of original size [2021-11-07 02:08:39,489 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-07 02:08:39,498 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:39,504 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-11-07 02:08:39,509 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 02:08:40,013 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 02:08:40,013 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 02:08:40,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2021-11-07 02:08:40,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594930407] [2021-11-07 02:08:40,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 02:08:40,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 02:08:40,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 02:08:40,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-11-07 02:08:40,016 INFO L87 Difference]: Start difference. First operand 102 states and 125 transitions. Second operand has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 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) [2021-11-07 02:08:40,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:08:40,094 INFO L93 Difference]: Finished difference Result 200 states and 251 transitions. [2021-11-07 02:08:40,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 02:08:40,095 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 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 [2021-11-07 02:08:40,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:08:40,097 INFO L225 Difference]: With dead ends: 200 [2021-11-07 02:08:40,097 INFO L226 Difference]: Without dead ends: 198 [2021-11-07 02:08:40,097 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 33 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-11-07 02:08:40,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-11-07 02:08:40,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2021-11-07 02:08:40,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 192 states have (on average 1.2447916666666667) internal successors, (239), 197 states have internal predecessors, (239), 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) [2021-11-07 02:08:40,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 239 transitions. [2021-11-07 02:08:40,105 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 239 transitions. Word has length 16 [2021-11-07 02:08:40,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:08:40,105 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 239 transitions. [2021-11-07 02:08:40,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 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) [2021-11-07 02:08:40,106 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 239 transitions. [2021-11-07 02:08:40,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-07 02:08:40,106 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:08:40,106 INFO L513 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1] [2021-11-07 02:08:40,135 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feee4952-3e8d-47e4-a0b6-fdc76f7f4bcc/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-07 02:08:40,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feee4952-3e8d-47e4-a0b6-fdc76f7f4bcc/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-11-07 02:08:40,320 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-07 02:08:40,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:08:40,321 INFO L85 PathProgramCache]: Analyzing trace with hash -748075738, now seen corresponding path program 2 times [2021-11-07 02:08:40,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 02:08:40,321 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537254341] [2021-11-07 02:08:40,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:40,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 02:08:40,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:40,347 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-07 02:08:40,347 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 02:08:40,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537254341] [2021-11-07 02:08:40,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537254341] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 02:08:40,348 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887952667] [2021-11-07 02:08:40,348 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 02:08:40,348 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:08:40,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feee4952-3e8d-47e4-a0b6-fdc76f7f4bcc/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:08:40,349 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feee4952-3e8d-47e4-a0b6-fdc76f7f4bcc/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:08:40,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feee4952-3e8d-47e4-a0b6-fdc76f7f4bcc/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-07 02:08:40,442 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-11-07 02:08:40,443 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 02:08:40,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:08:40,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:08:40,503 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-07 02:08:40,504 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:08:40,562 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-07 02:08:40,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1887952667] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:08:40,562 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1730331671] [2021-11-07 02:08:40,567 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2021-11-07 02:08:40,567 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 02:08:40,567 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 02:08:40,568 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 02:08:40,568 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 02:08:40,579 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:40,584 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-07 02:08:40,590 INFO L180 QuantifierPusher]: treesize reduction 4, result has 93.2 percent of original size [2021-11-07 02:08:40,594 INFO L185 QuantifierPusher]: treesize reduction 5, result has 86.5 percent of original size 32 [2021-11-07 02:08:40,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:40,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:40,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:40,634 INFO L180 QuantifierPusher]: treesize reduction 9, result has 92.4 percent of original size [2021-11-07 02:08:40,640 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 123 [2021-11-07 02:08:40,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:40,663 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:40,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:40,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:40,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:40,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:40,674 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:40,678 INFO L180 QuantifierPusher]: treesize reduction 6, result has 89.3 percent of original size [2021-11-07 02:08:40,686 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-11-07 02:08:40,697 INFO L180 QuantifierPusher]: treesize reduction 6, result has 89.3 percent of original size [2021-11-07 02:08:40,704 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-11-07 02:08:40,706 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:40,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:40,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:40,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:40,732 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 02:08:41,061 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 02:08:41,061 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 02:08:41,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2021-11-07 02:08:41,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333016625] [2021-11-07 02:08:41,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 02:08:41,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 02:08:41,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 02:08:41,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-11-07 02:08:41,063 INFO L87 Difference]: Start difference. First operand 198 states and 239 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 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) [2021-11-07 02:08:41,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:08:41,128 INFO L93 Difference]: Finished difference Result 278 states and 331 transitions. [2021-11-07 02:08:41,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 02:08:41,129 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 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 17 [2021-11-07 02:08:41,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:08:41,130 INFO L225 Difference]: With dead ends: 278 [2021-11-07 02:08:41,131 INFO L226 Difference]: Without dead ends: 276 [2021-11-07 02:08:41,131 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-11-07 02:08:41,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2021-11-07 02:08:41,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 194. [2021-11-07 02:08:41,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 190 states have (on average 1.236842105263158) internal successors, (235), 193 states have internal predecessors, (235), 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) [2021-11-07 02:08:41,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 235 transitions. [2021-11-07 02:08:41,137 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 235 transitions. Word has length 17 [2021-11-07 02:08:41,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:08:41,138 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 235 transitions. [2021-11-07 02:08:41,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 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) [2021-11-07 02:08:41,138 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 235 transitions. [2021-11-07 02:08:41,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-07 02:08:41,139 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:08:41,140 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:08:41,187 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feee4952-3e8d-47e4-a0b6-fdc76f7f4bcc/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-07 02:08:41,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feee4952-3e8d-47e4-a0b6-fdc76f7f4bcc/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-11-07 02:08:41,364 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-07 02:08:41,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:08:41,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1778236344, now seen corresponding path program 1 times [2021-11-07 02:08:41,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 02:08:41,365 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512992371] [2021-11-07 02:08:41,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:41,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 02:08:41,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:41,393 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 02:08:41,393 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 02:08:41,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512992371] [2021-11-07 02:08:41,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512992371] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 02:08:41,394 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:08:41,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 02:08:41,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148158577] [2021-11-07 02:08:41,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:08:41,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 02:08:41,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:08:41,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:08:41,396 INFO L87 Difference]: Start difference. First operand 194 states and 235 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 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) [2021-11-07 02:08:41,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:08:41,432 INFO L93 Difference]: Finished difference Result 274 states and 327 transitions. [2021-11-07 02:08:41,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:08:41,433 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 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 21 [2021-11-07 02:08:41,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:08:41,435 INFO L225 Difference]: With dead ends: 274 [2021-11-07 02:08:41,435 INFO L226 Difference]: Without dead ends: 272 [2021-11-07 02:08:41,436 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:08:41,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-11-07 02:08:41,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 92. [2021-11-07 02:08:41,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 90 states have (on average 1.1666666666666667) internal successors, (105), 91 states have internal predecessors, (105), 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) [2021-11-07 02:08:41,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 105 transitions. [2021-11-07 02:08:41,441 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 105 transitions. Word has length 21 [2021-11-07 02:08:41,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:08:41,442 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 105 transitions. [2021-11-07 02:08:41,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 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) [2021-11-07 02:08:41,442 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 105 transitions. [2021-11-07 02:08:41,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-07 02:08:41,443 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:08:41,444 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1] [2021-11-07 02:08:41,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-11-07 02:08:41,444 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-07 02:08:41,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:08:41,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1402566353, now seen corresponding path program 2 times [2021-11-07 02:08:41,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 02:08:41,445 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781415260] [2021-11-07 02:08:41,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:41,446 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 02:08:41,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:41,509 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:41,509 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 02:08:41,509 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781415260] [2021-11-07 02:08:41,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781415260] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 02:08:41,510 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777374955] [2021-11-07 02:08:41,510 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 02:08:41,510 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:08:41,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feee4952-3e8d-47e4-a0b6-fdc76f7f4bcc/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:08:41,511 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feee4952-3e8d-47e4-a0b6-fdc76f7f4bcc/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:08:41,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feee4952-3e8d-47e4-a0b6-fdc76f7f4bcc/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-07 02:08:41,632 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-07 02:08:41,633 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 02:08:41,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 02:08:41,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:08:41,752 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:41,753 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:08:41,933 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:41,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [777374955] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:08:41,933 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1033908146] [2021-11-07 02:08:41,936 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2021-11-07 02:08:41,936 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 02:08:41,937 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 02:08:41,937 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 02:08:41,937 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 02:08:41,943 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:41,947 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-07 02:08:41,953 INFO L180 QuantifierPusher]: treesize reduction 15, result has 75.4 percent of original size [2021-11-07 02:08:41,958 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-07 02:08:41,961 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:41,966 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-11-07 02:08:41,969 INFO L180 QuantifierPusher]: treesize reduction 8, result has 86.9 percent of original size [2021-11-07 02:08:41,972 INFO L185 QuantifierPusher]: treesize reduction 5, result has 89.8 percent of original size 44 [2021-11-07 02:08:41,974 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:41,983 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:41,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:42,015 INFO L180 QuantifierPusher]: treesize reduction 15, result has 85.6 percent of original size [2021-11-07 02:08:42,020 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-11-07 02:08:42,024 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:42,031 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-11-07 02:08:42,035 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.2 percent of original size [2021-11-07 02:08:42,041 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-07 02:08:42,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:42,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:42,060 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:42,061 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:42,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:42,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:42,067 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:42,072 INFO L180 QuantifierPusher]: treesize reduction 16, result has 74.2 percent of original size [2021-11-07 02:08:42,075 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-07 02:08:42,078 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:42,084 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-11-07 02:08:42,087 INFO L180 QuantifierPusher]: treesize reduction 3, result has 95.1 percent of original size [2021-11-07 02:08:42,089 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-11-07 02:08:42,095 INFO L180 QuantifierPusher]: treesize reduction 16, result has 74.2 percent of original size [2021-11-07 02:08:42,098 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-07 02:08:42,102 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:42,108 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-11-07 02:08:42,112 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 02:08:42,642 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 02:08:42,642 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 02:08:42,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2021-11-07 02:08:42,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177615995] [2021-11-07 02:08:42,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 02:08:42,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 02:08:42,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 02:08:42,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2021-11-07 02:08:42,646 INFO L87 Difference]: Start difference. First operand 92 states and 105 transitions. Second operand has 12 states, 11 states have (on average 6.090909090909091) internal successors, (67), 12 states have internal predecessors, (67), 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) [2021-11-07 02:08:42,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:08:42,763 INFO L93 Difference]: Finished difference Result 190 states and 225 transitions. [2021-11-07 02:08:42,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 02:08:42,763 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.090909090909091) internal successors, (67), 12 states have internal predecessors, (67), 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 34 [2021-11-07 02:08:42,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:08:42,765 INFO L225 Difference]: With dead ends: 190 [2021-11-07 02:08:42,765 INFO L226 Difference]: Without dead ends: 188 [2021-11-07 02:08:42,766 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 78 SyntacticMatches, 10 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2021-11-07 02:08:42,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-11-07 02:08:42,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2021-11-07 02:08:42,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 186 states have (on average 1.1451612903225807) internal successors, (213), 187 states have internal predecessors, (213), 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) [2021-11-07 02:08:42,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 213 transitions. [2021-11-07 02:08:42,771 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 213 transitions. Word has length 34 [2021-11-07 02:08:42,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:08:42,772 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 213 transitions. [2021-11-07 02:08:42,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.090909090909091) internal successors, (67), 12 states have internal predecessors, (67), 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) [2021-11-07 02:08:42,772 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 213 transitions. [2021-11-07 02:08:42,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-07 02:08:42,775 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:08:42,775 INFO L513 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 10, 1, 1, 1, 1, 1] [2021-11-07 02:08:42,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feee4952-3e8d-47e4-a0b6-fdc76f7f4bcc/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-07 02:08:42,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feee4952-3e8d-47e4-a0b6-fdc76f7f4bcc/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2021-11-07 02:08:42,988 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-07 02:08:42,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:08:42,989 INFO L85 PathProgramCache]: Analyzing trace with hash -540245799, now seen corresponding path program 3 times [2021-11-07 02:08:42,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 02:08:42,989 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302886797] [2021-11-07 02:08:42,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:42,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 02:08:43,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:43,250 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:43,250 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 02:08:43,250 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302886797] [2021-11-07 02:08:43,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302886797] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 02:08:43,251 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398464124] [2021-11-07 02:08:43,251 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 02:08:43,251 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:08:43,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feee4952-3e8d-47e4-a0b6-fdc76f7f4bcc/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:08:43,254 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feee4952-3e8d-47e4-a0b6-fdc76f7f4bcc/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:08:43,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feee4952-3e8d-47e4-a0b6-fdc76f7f4bcc/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-07 02:08:43,396 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 02:08:43,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 02:08:43,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-07 02:08:43,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:08:43,655 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:43,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:08:44,115 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:44,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398464124] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:08:44,115 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1062344248] [2021-11-07 02:08:44,118 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2021-11-07 02:08:44,118 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 02:08:44,119 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 02:08:44,119 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 02:08:44,119 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 02:08:44,125 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:44,129 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-07 02:08:44,141 INFO L180 QuantifierPusher]: treesize reduction 15, result has 75.4 percent of original size [2021-11-07 02:08:44,144 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-07 02:08:44,147 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:44,150 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-11-07 02:08:44,153 INFO L180 QuantifierPusher]: treesize reduction 8, result has 86.9 percent of original size [2021-11-07 02:08:44,155 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-07 02:08:44,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:44,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:44,167 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:44,178 INFO L180 QuantifierPusher]: treesize reduction 15, result has 86.2 percent of original size [2021-11-07 02:08:44,184 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-11-07 02:08:44,187 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:44,195 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 99 [2021-11-07 02:08:44,199 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.3 percent of original size [2021-11-07 02:08:44,203 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 110 [2021-11-07 02:08:44,206 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:44,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:44,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:44,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:44,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:44,221 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:44,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:44,228 INFO L180 QuantifierPusher]: treesize reduction 16, result has 74.2 percent of original size [2021-11-07 02:08:44,231 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-07 02:08:44,234 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:44,241 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-11-07 02:08:44,243 INFO L180 QuantifierPusher]: treesize reduction 3, result has 95.1 percent of original size [2021-11-07 02:08:44,245 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-11-07 02:08:44,251 INFO L180 QuantifierPusher]: treesize reduction 16, result has 74.2 percent of original size [2021-11-07 02:08:44,254 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-07 02:08:44,259 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:44,263 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-11-07 02:08:44,266 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 02:08:45,153 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 02:08:45,154 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 02:08:45,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2021-11-07 02:08:45,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264550052] [2021-11-07 02:08:45,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-07 02:08:45,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 02:08:45,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-07 02:08:45,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=343, Invalid=649, Unknown=0, NotChecked=0, Total=992 [2021-11-07 02:08:45,158 INFO L87 Difference]: Start difference. First operand 188 states and 213 transitions. Second operand has 24 states, 23 states have (on average 6.043478260869565) internal successors, (139), 24 states have internal predecessors, (139), 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) [2021-11-07 02:08:45,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:08:45,421 INFO L93 Difference]: Finished difference Result 382 states and 453 transitions. [2021-11-07 02:08:45,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-07 02:08:45,422 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 6.043478260869565) internal successors, (139), 24 states have internal predecessors, (139), 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 70 [2021-11-07 02:08:45,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:08:45,425 INFO L225 Difference]: With dead ends: 382 [2021-11-07 02:08:45,425 INFO L226 Difference]: Without dead ends: 380 [2021-11-07 02:08:45,426 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 168 SyntacticMatches, 22 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1039 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=343, Invalid=649, Unknown=0, NotChecked=0, Total=992 [2021-11-07 02:08:45,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2021-11-07 02:08:45,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 380. [2021-11-07 02:08:45,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 378 states have (on average 1.1349206349206349) internal successors, (429), 379 states have internal predecessors, (429), 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) [2021-11-07 02:08:45,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 429 transitions. [2021-11-07 02:08:45,438 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 429 transitions. Word has length 70 [2021-11-07 02:08:45,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:08:45,439 INFO L470 AbstractCegarLoop]: Abstraction has 380 states and 429 transitions. [2021-11-07 02:08:45,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 6.043478260869565) internal successors, (139), 24 states have internal predecessors, (139), 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) [2021-11-07 02:08:45,440 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 429 transitions. [2021-11-07 02:08:45,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-07 02:08:45,442 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:08:45,442 INFO L513 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 23, 22, 1, 1, 1, 1, 1] [2021-11-07 02:08:45,489 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feee4952-3e8d-47e4-a0b6-fdc76f7f4bcc/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-07 02:08:45,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feee4952-3e8d-47e4-a0b6-fdc76f7f4bcc/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:08:45,656 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-07 02:08:45,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:08:45,657 INFO L85 PathProgramCache]: Analyzing trace with hash -10237651, now seen corresponding path program 4 times [2021-11-07 02:08:45,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 02:08:45,657 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342809125] [2021-11-07 02:08:45,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:45,657 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 02:08:45,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:46,207 INFO L134 CoverageAnalysis]: Checked inductivity of 1518 backedges. 0 proven. 1518 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:46,207 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 02:08:46,207 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342809125] [2021-11-07 02:08:46,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342809125] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 02:08:46,208 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924783932] [2021-11-07 02:08:46,208 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 02:08:46,208 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:08:46,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feee4952-3e8d-47e4-a0b6-fdc76f7f4bcc/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:08:46,212 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feee4952-3e8d-47e4-a0b6-fdc76f7f4bcc/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:08:46,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feee4952-3e8d-47e4-a0b6-fdc76f7f4bcc/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-07 02:08:46,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:46,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-07 02:08:46,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:08:47,041 INFO L134 CoverageAnalysis]: Checked inductivity of 1518 backedges. 0 proven. 1518 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:47,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:08:48,467 INFO L134 CoverageAnalysis]: Checked inductivity of 1518 backedges. 0 proven. 1518 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:48,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924783932] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:08:48,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1040262478] [2021-11-07 02:08:48,471 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2021-11-07 02:08:48,471 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 02:08:48,471 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 02:08:48,472 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 02:08:48,472 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 02:08:48,478 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:48,482 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-07 02:08:48,500 INFO L180 QuantifierPusher]: treesize reduction 15, result has 75.4 percent of original size [2021-11-07 02:08:48,504 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-07 02:08:48,506 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:48,511 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-11-07 02:08:48,513 INFO L180 QuantifierPusher]: treesize reduction 8, result has 86.9 percent of original size [2021-11-07 02:08:48,517 INFO L185 QuantifierPusher]: treesize reduction 5, result has 89.8 percent of original size 44 [2021-11-07 02:08:48,519 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:48,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:48,530 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:48,543 INFO L180 QuantifierPusher]: treesize reduction 15, result has 85.6 percent of original size [2021-11-07 02:08:48,548 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-11-07 02:08:48,552 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:48,557 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-11-07 02:08:48,562 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.2 percent of original size [2021-11-07 02:08:48,565 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-07 02:08:48,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:48,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:48,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:48,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:48,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:48,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:48,589 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:48,593 INFO L180 QuantifierPusher]: treesize reduction 16, result has 74.2 percent of original size [2021-11-07 02:08:48,597 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-07 02:08:48,599 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:48,603 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-11-07 02:08:48,606 INFO L180 QuantifierPusher]: treesize reduction 3, result has 95.1 percent of original size [2021-11-07 02:08:48,608 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-11-07 02:08:48,614 INFO L180 QuantifierPusher]: treesize reduction 16, result has 74.2 percent of original size [2021-11-07 02:08:48,618 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-07 02:08:48,622 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:48,626 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-11-07 02:08:48,629 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 02:08:50,461 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 02:08:50,461 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 02:08:50,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2021-11-07 02:08:50,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99578050] [2021-11-07 02:08:50,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-11-07 02:08:50,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 02:08:50,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-11-07 02:08:50,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1243, Invalid=1837, Unknown=0, NotChecked=0, Total=3080 [2021-11-07 02:08:50,467 INFO L87 Difference]: Start difference. First operand 380 states and 429 transitions. Second operand has 48 states, 47 states have (on average 6.0212765957446805) internal successors, (283), 48 states have internal predecessors, (283), 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) [2021-11-07 02:08:51,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:08:51,246 INFO L93 Difference]: Finished difference Result 766 states and 909 transitions. [2021-11-07 02:08:51,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-11-07 02:08:51,247 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 6.0212765957446805) internal successors, (283), 48 states have internal predecessors, (283), 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 142 [2021-11-07 02:08:51,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:08:51,252 INFO L225 Difference]: With dead ends: 766 [2021-11-07 02:08:51,253 INFO L226 Difference]: Without dead ends: 764 [2021-11-07 02:08:51,255 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 448 GetRequests, 348 SyntacticMatches, 46 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3835 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1243, Invalid=1837, Unknown=0, NotChecked=0, Total=3080 [2021-11-07 02:08:51,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2021-11-07 02:08:51,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 764. [2021-11-07 02:08:51,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 764 states, 762 states have (on average 1.1299212598425197) internal successors, (861), 763 states have internal predecessors, (861), 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) [2021-11-07 02:08:51,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 764 states to 764 states and 861 transitions. [2021-11-07 02:08:51,275 INFO L78 Accepts]: Start accepts. Automaton has 764 states and 861 transitions. Word has length 142 [2021-11-07 02:08:51,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:08:51,276 INFO L470 AbstractCegarLoop]: Abstraction has 764 states and 861 transitions. [2021-11-07 02:08:51,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 6.0212765957446805) internal successors, (283), 48 states have internal predecessors, (283), 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) [2021-11-07 02:08:51,277 INFO L276 IsEmpty]: Start isEmpty. Operand 764 states and 861 transitions. [2021-11-07 02:08:51,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2021-11-07 02:08:51,281 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:08:51,281 INFO L513 BasicCegarLoop]: trace histogram [47, 47, 47, 47, 47, 46, 1, 1, 1, 1, 1] [2021-11-07 02:08:51,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feee4952-3e8d-47e4-a0b6-fdc76f7f4bcc/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-07 02:08:51,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feee4952-3e8d-47e4-a0b6-fdc76f7f4bcc/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2021-11-07 02:08:51,508 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-07 02:08:51,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:08:51,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1320829483, now seen corresponding path program 5 times [2021-11-07 02:08:51,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 02:08:51,509 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875284974] [2021-11-07 02:08:51,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:51,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 02:08:51,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:08:53,213 INFO L134 CoverageAnalysis]: Checked inductivity of 6486 backedges. 0 proven. 6486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:53,214 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 02:08:53,214 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875284974] [2021-11-07 02:08:53,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875284974] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 02:08:53,214 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539189258] [2021-11-07 02:08:53,214 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 02:08:53,215 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:08:53,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feee4952-3e8d-47e4-a0b6-fdc76f7f4bcc/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:08:53,220 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feee4952-3e8d-47e4-a0b6-fdc76f7f4bcc/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:08:53,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feee4952-3e8d-47e4-a0b6-fdc76f7f4bcc/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-07 02:08:53,752 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2021-11-07 02:08:53,753 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 02:08:53,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 816 conjuncts, 48 conjunts are in the unsatisfiable core [2021-11-07 02:08:53,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:08:54,765 INFO L134 CoverageAnalysis]: Checked inductivity of 6486 backedges. 0 proven. 6486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:54,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:08:59,116 INFO L134 CoverageAnalysis]: Checked inductivity of 6486 backedges. 0 proven. 6486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:59,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539189258] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:08:59,117 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [58404937] [2021-11-07 02:08:59,128 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2021-11-07 02:08:59,128 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 02:08:59,129 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 02:08:59,129 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 02:08:59,129 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 02:08:59,142 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:59,146 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-07 02:08:59,153 INFO L180 QuantifierPusher]: treesize reduction 15, result has 75.4 percent of original size [2021-11-07 02:08:59,156 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-07 02:08:59,158 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:59,165 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-11-07 02:08:59,167 INFO L180 QuantifierPusher]: treesize reduction 8, result has 86.9 percent of original size [2021-11-07 02:08:59,169 INFO L185 QuantifierPusher]: treesize reduction 5, result has 89.8 percent of original size 44 [2021-11-07 02:08:59,171 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:59,179 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:59,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:59,198 INFO L180 QuantifierPusher]: treesize reduction 15, result has 85.6 percent of original size [2021-11-07 02:08:59,202 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-11-07 02:08:59,205 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:59,211 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-11-07 02:08:59,215 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.2 percent of original size [2021-11-07 02:08:59,218 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-07 02:08:59,222 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:59,235 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:59,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:59,237 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:59,238 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:59,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:59,243 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:08:59,247 INFO L180 QuantifierPusher]: treesize reduction 16, result has 74.2 percent of original size [2021-11-07 02:08:59,250 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-07 02:08:59,256 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:59,259 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-11-07 02:08:59,264 INFO L180 QuantifierPusher]: treesize reduction 3, result has 95.1 percent of original size [2021-11-07 02:08:59,266 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-11-07 02:08:59,272 INFO L180 QuantifierPusher]: treesize reduction 16, result has 74.2 percent of original size [2021-11-07 02:08:59,278 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-07 02:08:59,282 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:08:59,286 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-11-07 02:08:59,289 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 02:09:03,834 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 02:09:03,834 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 02:09:03,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 95 [2021-11-07 02:09:03,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418421543] [2021-11-07 02:09:03,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2021-11-07 02:09:03,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 02:09:03,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2021-11-07 02:09:03,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4771, Invalid=5941, Unknown=0, NotChecked=0, Total=10712 [2021-11-07 02:09:03,846 INFO L87 Difference]: Start difference. First operand 764 states and 861 transitions. Second operand has 96 states, 95 states have (on average 6.010526315789473) internal successors, (571), 96 states have internal predecessors, (571), 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) [2021-11-07 02:09:08,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:09:08,180 INFO L93 Difference]: Finished difference Result 1534 states and 1821 transitions. [2021-11-07 02:09:08,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-11-07 02:09:08,180 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 6.010526315789473) internal successors, (571), 96 states have internal predecessors, (571), 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 286 [2021-11-07 02:09:08,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:09:08,190 INFO L225 Difference]: With dead ends: 1534 [2021-11-07 02:09:08,190 INFO L226 Difference]: Without dead ends: 1532 [2021-11-07 02:09:08,198 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 904 GetRequests, 708 SyntacticMatches, 94 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14611 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=4771, Invalid=5941, Unknown=0, NotChecked=0, Total=10712 [2021-11-07 02:09:08,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1532 states. [2021-11-07 02:09:08,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1532 to 1532. [2021-11-07 02:09:08,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1532 states, 1530 states have (on average 1.1274509803921569) internal successors, (1725), 1531 states have internal predecessors, (1725), 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) [2021-11-07 02:09:08,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1532 states to 1532 states and 1725 transitions. [2021-11-07 02:09:08,238 INFO L78 Accepts]: Start accepts. Automaton has 1532 states and 1725 transitions. Word has length 286 [2021-11-07 02:09:08,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:09:08,239 INFO L470 AbstractCegarLoop]: Abstraction has 1532 states and 1725 transitions. [2021-11-07 02:09:08,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 6.010526315789473) internal successors, (571), 96 states have internal predecessors, (571), 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) [2021-11-07 02:09:08,240 INFO L276 IsEmpty]: Start isEmpty. Operand 1532 states and 1725 transitions. [2021-11-07 02:09:08,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 575 [2021-11-07 02:09:08,257 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:09:08,258 INFO L513 BasicCegarLoop]: trace histogram [95, 95, 95, 95, 95, 94, 1, 1, 1, 1, 1] [2021-11-07 02:09:08,295 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feee4952-3e8d-47e4-a0b6-fdc76f7f4bcc/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-07 02:09:08,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feee4952-3e8d-47e4-a0b6-fdc76f7f4bcc/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:09:08,475 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-07 02:09:08,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:09:08,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1376204581, now seen corresponding path program 6 times [2021-11-07 02:09:08,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 02:09:08,476 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071447964] [2021-11-07 02:09:08,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:09:08,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 02:09:08,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:09:13,778 INFO L134 CoverageAnalysis]: Checked inductivity of 26790 backedges. 0 proven. 26790 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:09:13,778 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 02:09:13,779 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071447964] [2021-11-07 02:09:13,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071447964] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 02:09:13,779 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390825027] [2021-11-07 02:09:13,779 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 02:09:13,779 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:09:13,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feee4952-3e8d-47e4-a0b6-fdc76f7f4bcc/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:09:13,781 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feee4952-3e8d-47e4-a0b6-fdc76f7f4bcc/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:09:13,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feee4952-3e8d-47e4-a0b6-fdc76f7f4bcc/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-07 02:09:14,539 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 02:09:14,539 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 02:09:14,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 1632 conjuncts, 96 conjunts are in the unsatisfiable core [2021-11-07 02:09:14,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:09:16,643 INFO L134 CoverageAnalysis]: Checked inductivity of 26790 backedges. 0 proven. 26790 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:09:16,644 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:09:29,115 INFO L134 CoverageAnalysis]: Checked inductivity of 26790 backedges. 0 proven. 26790 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:09:29,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [390825027] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:09:29,116 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [438686080] [2021-11-07 02:09:29,118 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2021-11-07 02:09:29,119 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 02:09:29,119 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 02:09:29,119 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 02:09:29,120 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 02:09:29,136 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:09:29,139 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-07 02:09:29,145 INFO L180 QuantifierPusher]: treesize reduction 15, result has 75.4 percent of original size [2021-11-07 02:09:29,147 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-07 02:09:29,149 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:09:29,152 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-11-07 02:09:29,154 INFO L180 QuantifierPusher]: treesize reduction 8, result has 86.9 percent of original size [2021-11-07 02:09:29,156 INFO L185 QuantifierPusher]: treesize reduction 5, result has 89.8 percent of original size 44 [2021-11-07 02:09:29,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:09:29,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:09:29,167 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:09:29,177 INFO L180 QuantifierPusher]: treesize reduction 15, result has 85.6 percent of original size [2021-11-07 02:09:29,180 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-11-07 02:09:29,183 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:09:29,187 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-11-07 02:09:29,190 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.2 percent of original size [2021-11-07 02:09:29,194 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-07 02:09:29,197 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:09:29,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:09:29,208 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:09:29,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:09:29,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:09:29,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:09:29,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:09:29,221 INFO L180 QuantifierPusher]: treesize reduction 16, result has 74.2 percent of original size [2021-11-07 02:09:29,224 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-07 02:09:29,226 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:09:29,231 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-11-07 02:09:29,233 INFO L180 QuantifierPusher]: treesize reduction 3, result has 95.1 percent of original size [2021-11-07 02:09:29,235 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-11-07 02:09:29,241 INFO L180 QuantifierPusher]: treesize reduction 16, result has 74.2 percent of original size [2021-11-07 02:09:29,244 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-07 02:09:29,247 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:09:29,251 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-11-07 02:09:29,254 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 02:09:43,450 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 02:09:43,450 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 02:09:43,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96, 96] total 191 [2021-11-07 02:09:43,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392543997] [2021-11-07 02:09:43,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2021-11-07 02:09:43,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 02:09:43,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2021-11-07 02:09:43,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18739, Invalid=21061, Unknown=0, NotChecked=0, Total=39800 [2021-11-07 02:09:43,476 INFO L87 Difference]: Start difference. First operand 1532 states and 1725 transitions. Second operand has 192 states, 191 states have (on average 6.005235602094241) internal successors, (1147), 192 states have internal predecessors, (1147), 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) [2021-11-07 02:10:28,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:10:28,115 INFO L93 Difference]: Finished difference Result 3070 states and 3645 transitions. [2021-11-07 02:10:28,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2021-11-07 02:10:28,117 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 191 states have (on average 6.005235602094241) internal successors, (1147), 192 states have internal predecessors, (1147), 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 574 [2021-11-07 02:10:28,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:10:28,136 INFO L225 Difference]: With dead ends: 3070 [2021-11-07 02:10:28,136 INFO L226 Difference]: Without dead ends: 3068 [2021-11-07 02:10:28,145 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1816 GetRequests, 1428 SyntacticMatches, 190 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56899 ImplicationChecksByTransitivity, 29.0s TimeCoverageRelationStatistics Valid=18739, Invalid=21061, Unknown=0, NotChecked=0, Total=39800 [2021-11-07 02:10:28,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3068 states. [2021-11-07 02:10:28,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3068 to 3068. [2021-11-07 02:10:28,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3068 states, 3066 states have (on average 1.1262230919765166) internal successors, (3453), 3067 states have internal predecessors, (3453), 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) [2021-11-07 02:10:28,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3068 states to 3068 states and 3453 transitions. [2021-11-07 02:10:28,233 INFO L78 Accepts]: Start accepts. Automaton has 3068 states and 3453 transitions. Word has length 574 [2021-11-07 02:10:28,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:10:28,235 INFO L470 AbstractCegarLoop]: Abstraction has 3068 states and 3453 transitions. [2021-11-07 02:10:28,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 191 states have (on average 6.005235602094241) internal successors, (1147), 192 states have internal predecessors, (1147), 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) [2021-11-07 02:10:28,237 INFO L276 IsEmpty]: Start isEmpty. Operand 3068 states and 3453 transitions. [2021-11-07 02:10:28,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1151 [2021-11-07 02:10:28,310 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:10:28,311 INFO L513 BasicCegarLoop]: trace histogram [191, 191, 191, 191, 191, 190, 1, 1, 1, 1, 1] [2021-11-07 02:10:28,361 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feee4952-3e8d-47e4-a0b6-fdc76f7f4bcc/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-07 02:10:28,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feee4952-3e8d-47e4-a0b6-fdc76f7f4bcc/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:10:28,524 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-07 02:10:28,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:10:28,525 INFO L85 PathProgramCache]: Analyzing trace with hash 2030070213, now seen corresponding path program 7 times [2021-11-07 02:10:28,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 02:10:28,525 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542075104] [2021-11-07 02:10:28,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:10:28,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 02:10:30,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:10:47,139 INFO L134 CoverageAnalysis]: Checked inductivity of 108870 backedges. 0 proven. 108870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:10:47,140 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 02:10:47,140 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542075104] [2021-11-07 02:10:47,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542075104] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 02:10:47,142 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933916313] [2021-11-07 02:10:47,143 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 02:10:47,143 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:10:47,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feee4952-3e8d-47e4-a0b6-fdc76f7f4bcc/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:10:47,144 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feee4952-3e8d-47e4-a0b6-fdc76f7f4bcc/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:10:47,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_feee4952-3e8d-47e4-a0b6-fdc76f7f4bcc/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-07 02:10:48,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:10:48,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 3264 conjuncts, 192 conjunts are in the unsatisfiable core [2021-11-07 02:10:48,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:10:52,566 INFO L134 CoverageAnalysis]: Checked inductivity of 108870 backedges. 0 proven. 108870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:10:52,566 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:11:41,222 INFO L134 CoverageAnalysis]: Checked inductivity of 108870 backedges. 0 proven. 108870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:11:41,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1933916313] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:11:41,222 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [300377231] [2021-11-07 02:11:41,225 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2021-11-07 02:11:41,226 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 02:11:41,226 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 02:11:41,227 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 02:11:41,227 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 02:11:41,242 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:11:41,246 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-07 02:11:41,251 INFO L180 QuantifierPusher]: treesize reduction 15, result has 75.4 percent of original size [2021-11-07 02:11:41,254 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-07 02:11:41,256 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:11:41,260 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-11-07 02:11:41,263 INFO L180 QuantifierPusher]: treesize reduction 8, result has 86.9 percent of original size [2021-11-07 02:11:41,266 INFO L185 QuantifierPusher]: treesize reduction 5, result has 89.8 percent of original size 44 [2021-11-07 02:11:41,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:11:41,275 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:11:41,280 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:11:41,289 INFO L180 QuantifierPusher]: treesize reduction 15, result has 85.6 percent of original size [2021-11-07 02:11:41,292 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-11-07 02:11:41,295 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:11:41,299 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-11-07 02:11:41,302 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.2 percent of original size [2021-11-07 02:11:41,304 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-07 02:11:41,307 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:11:41,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:11:41,318 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:11:41,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:11:41,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:11:41,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:11:41,323 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:11:41,326 INFO L180 QuantifierPusher]: treesize reduction 16, result has 74.2 percent of original size [2021-11-07 02:11:41,329 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-07 02:11:41,331 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:11:41,333 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-11-07 02:11:41,335 INFO L180 QuantifierPusher]: treesize reduction 3, result has 95.1 percent of original size [2021-11-07 02:11:41,337 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-11-07 02:11:41,342 INFO L180 QuantifierPusher]: treesize reduction 16, result has 74.2 percent of original size [2021-11-07 02:11:41,345 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-07 02:11:41,348 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:11:41,351 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-11-07 02:11:41,354 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 02:12:34,633 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 02:12:34,633 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 02:12:34,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [192, 192, 192] total 383 [2021-11-07 02:12:34,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988733889] [2021-11-07 02:12:34,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 384 states [2021-11-07 02:12:34,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 02:12:34,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 384 interpolants. [2021-11-07 02:12:34,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74323, Invalid=78949, Unknown=0, NotChecked=0, Total=153272 [2021-11-07 02:12:34,685 INFO L87 Difference]: Start difference. First operand 3068 states and 3453 transitions. Second operand has 384 states, 383 states have (on average 6.002610966057441) internal successors, (2299), 384 states have internal predecessors, (2299), 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)