./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/Benghazi.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fdd0b0-e596-4924-acb3-a75bd2c1311d/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fdd0b0-e596-4924-acb3-a75bd2c1311d/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fdd0b0-e596-4924-acb3-a75bd2c1311d/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fdd0b0-e596-4924-acb3-a75bd2c1311d/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted/Benghazi.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fdd0b0-e596-4924-acb3-a75bd2c1311d/bin/utaipan-SDwSMHVbGG/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fdd0b0-e596-4924-acb3-a75bd2c1311d/bin/utaipan-SDwSMHVbGG --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 9edf84ee73e15e033440f38035e679f46457b07702832d589a58530a086e57e5 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 05:33:17,846 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:33:17,848 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:33:17,879 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:33:17,880 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:33:17,882 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:33:17,883 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:33:17,886 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:33:17,888 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:33:17,889 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:33:17,890 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:33:17,892 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:33:17,892 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:33:17,894 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:33:17,895 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:33:17,897 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:33:17,898 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:33:17,899 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:33:17,902 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:33:17,905 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:33:17,907 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:33:17,919 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:33:17,921 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:33:17,922 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:33:17,928 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:33:17,934 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:33:17,934 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:33:17,936 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:33:17,936 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:33:17,938 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:33:17,940 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:33:17,941 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:33:17,943 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:33:17,944 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:33:17,946 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:33:17,947 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:33:17,948 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:33:17,948 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:33:17,949 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:33:17,950 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:33:17,950 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:33:17,951 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fdd0b0-e596-4924-acb3-a75bd2c1311d/bin/utaipan-SDwSMHVbGG/config/svcomp-Overflow-64bit-Taipan_Default.epf [2021-10-29 05:33:17,987 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:33:17,988 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:33:17,989 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:33:17,989 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:33:17,989 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:33:17,989 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:33:17,990 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 05:33:17,990 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:33:17,990 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:33:17,990 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 05:33:17,991 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 05:33:17,991 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:33:17,991 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 05:33:17,991 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 05:33:17,991 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 05:33:17,992 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:33:17,993 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-29 05:33:17,993 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 05:33:17,993 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:33:17,993 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 05:33:17,994 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:33:17,994 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 05:33:17,994 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-29 05:33:17,994 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 05:33:17,994 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:33:17,995 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 05:33:17,995 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:33:17,995 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:33:17,995 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:33:17,996 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:33:17,996 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:33:17,996 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 05:33:17,996 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 05:33:17,997 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 05:33:17,997 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 05:33:17,997 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:33:17,997 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:33:17,998 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_62fdd0b0-e596-4924-acb3-a75bd2c1311d/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fdd0b0-e596-4924-acb3-a75bd2c1311d/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9edf84ee73e15e033440f38035e679f46457b07702832d589a58530a086e57e5 [2021-10-29 05:33:18,293 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:33:18,329 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:33:18,332 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:33:18,334 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:33:18,335 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:33:18,336 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fdd0b0-e596-4924-acb3-a75bd2c1311d/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/termination-crafted/Benghazi.c [2021-10-29 05:33:18,407 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fdd0b0-e596-4924-acb3-a75bd2c1311d/bin/utaipan-SDwSMHVbGG/data/ecd6c374a/2112c9c5a0af4f77802c918dc7cfd98d/FLAG6ab01b5e2 [2021-10-29 05:33:18,910 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:33:18,911 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fdd0b0-e596-4924-acb3-a75bd2c1311d/sv-benchmarks/c/termination-crafted/Benghazi.c [2021-10-29 05:33:18,921 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fdd0b0-e596-4924-acb3-a75bd2c1311d/bin/utaipan-SDwSMHVbGG/data/ecd6c374a/2112c9c5a0af4f77802c918dc7cfd98d/FLAG6ab01b5e2 [2021-10-29 05:33:19,282 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fdd0b0-e596-4924-acb3-a75bd2c1311d/bin/utaipan-SDwSMHVbGG/data/ecd6c374a/2112c9c5a0af4f77802c918dc7cfd98d [2021-10-29 05:33:19,285 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:33:19,286 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:33:19,295 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:33:19,295 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:33:19,298 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:33:19,299 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:33:19" (1/1) ... [2021-10-29 05:33:19,300 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bdcd26d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:33:19, skipping insertion in model container [2021-10-29 05:33:19,301 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:33:19" (1/1) ... [2021-10-29 05:33:19,308 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:33:19,319 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:33:19,537 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:33:19,541 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:33:19,565 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:33:19,580 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:33:19,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:33:19 WrapperNode [2021-10-29 05:33:19,581 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:33:19,583 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:33:19,583 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:33:19,583 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:33:19,591 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:33:19" (1/1) ... [2021-10-29 05:33:19,596 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:33:19" (1/1) ... [2021-10-29 05:33:19,618 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:33:19,619 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:33:19,620 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:33:19,620 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:33:19,628 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:33:19" (1/1) ... [2021-10-29 05:33:19,629 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:33:19" (1/1) ... [2021-10-29 05:33:19,630 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:33:19" (1/1) ... [2021-10-29 05:33:19,631 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:33:19" (1/1) ... [2021-10-29 05:33:19,634 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:33:19" (1/1) ... [2021-10-29 05:33:19,638 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:33:19" (1/1) ... [2021-10-29 05:33:19,643 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:33:19" (1/1) ... [2021-10-29 05:33:19,644 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:33:19,646 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:33:19,647 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:33:19,647 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:33:19,648 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:33:19" (1/1) ... [2021-10-29 05:33:19,656 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:33:19,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fdd0b0-e596-4924-acb3-a75bd2c1311d/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:33:19,688 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fdd0b0-e596-4924-acb3-a75bd2c1311d/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:33:19,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fdd0b0-e596-4924-acb3-a75bd2c1311d/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:33:19,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:33:19,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:33:19,996 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:33:19,997 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-29 05:33:20,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:33:20 BoogieIcfgContainer [2021-10-29 05:33:20,000 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:33:20,002 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:33:20,002 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:33:20,006 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:33:20,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:33:19" (1/3) ... [2021-10-29 05:33:20,010 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d0bd7fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:33:20, skipping insertion in model container [2021-10-29 05:33:20,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:33:19" (2/3) ... [2021-10-29 05:33:20,010 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d0bd7fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:33:20, skipping insertion in model container [2021-10-29 05:33:20,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:33:20" (3/3) ... [2021-10-29 05:33:20,028 INFO L111 eAbstractionObserver]: Analyzing ICFG Benghazi.c [2021-10-29 05:33:20,034 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:33:20,034 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-10-29 05:33:20,083 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:33:20,090 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 [2021-10-29 05:33:20,090 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-29 05:33:20,123 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 8 states have (on average 1.875) internal successors, (15), 14 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) [2021-10-29 05:33:20,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-29 05:33:20,128 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:33:20,129 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-29 05:33:20,130 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-29 05:33:20,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:33:20,150 INFO L85 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2021-10-29 05:33:20,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:33:20,160 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141893214] [2021-10-29 05:33:20,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:33:20,162 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:33:20,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:33:20,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:33:20,353 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:33:20,354 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141893214] [2021-10-29 05:33:20,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141893214] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:33:20,356 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:33:20,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-29 05:33:20,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577789387] [2021-10-29 05:33:20,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 05:33:20,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:33:20,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 05:33:20,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:33:20,386 INFO L87 Difference]: Start difference. First operand has 15 states, 8 states have (on average 1.875) internal successors, (15), 14 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) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:33:20,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:33:20,459 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2021-10-29 05:33:20,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:33:20,461 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-29 05:33:20,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:33:20,471 INFO L225 Difference]: With dead ends: 20 [2021-10-29 05:33:20,472 INFO L226 Difference]: Without dead ends: 17 [2021-10-29 05:33:20,476 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:33:20,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-10-29 05:33:20,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2021-10-29 05:33:20,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 10 states have (on average 1.6) internal successors, (16), 15 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:33:20,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-10-29 05:33:20,512 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 3 [2021-10-29 05:33:20,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:33:20,512 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-10-29 05:33:20,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:33:20,514 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-10-29 05:33:20,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-29 05:33:20,514 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:33:20,515 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-29 05:33:20,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-29 05:33:20,516 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-29 05:33:20,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:33:20,520 INFO L85 PathProgramCache]: Analyzing trace with hash 963307, now seen corresponding path program 1 times [2021-10-29 05:33:20,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:33:20,521 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450099743] [2021-10-29 05:33:20,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:33:20,521 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:33:20,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:33:20,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:33:20,582 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:33:20,583 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450099743] [2021-10-29 05:33:20,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450099743] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:33:20,583 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:33:20,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 05:33:20,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037215156] [2021-10-29 05:33:20,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:33:20,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:33:20,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:33:20,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:33:20,591 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:33:20,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:33:20,631 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2021-10-29 05:33:20,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 05:33:20,632 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-29 05:33:20,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:33:20,633 INFO L225 Difference]: With dead ends: 22 [2021-10-29 05:33:20,633 INFO L226 Difference]: Without dead ends: 21 [2021-10-29 05:33:20,634 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:33:20,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-10-29 05:33:20,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 17. [2021-10-29 05:33:20,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 16 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:33:20,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2021-10-29 05:33:20,638 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 4 [2021-10-29 05:33:20,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:33:20,639 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2021-10-29 05:33:20,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:33:20,639 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2021-10-29 05:33:20,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-29 05:33:20,640 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:33:20,640 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-29 05:33:20,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-29 05:33:20,641 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-29 05:33:20,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:33:20,641 INFO L85 PathProgramCache]: Analyzing trace with hash 29862563, now seen corresponding path program 1 times [2021-10-29 05:33:20,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:33:20,642 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437868731] [2021-10-29 05:33:20,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:33:20,643 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:33:20,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:33:20,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:33:20,663 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:33:20,663 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437868731] [2021-10-29 05:33:20,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437868731] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:33:20,664 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:33:20,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-29 05:33:20,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418993408] [2021-10-29 05:33:20,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 05:33:20,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:33:20,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 05:33:20,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:33:20,666 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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) [2021-10-29 05:33:20,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:33:20,686 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2021-10-29 05:33:20,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:33:20,687 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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 [2021-10-29 05:33:20,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:33:20,689 INFO L225 Difference]: With dead ends: 24 [2021-10-29 05:33:20,690 INFO L226 Difference]: Without dead ends: 23 [2021-10-29 05:33:20,691 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:33:20,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-29 05:33:20,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 18. [2021-10-29 05:33:20,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.5) internal successors, (18), 17 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:33:20,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2021-10-29 05:33:20,695 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 5 [2021-10-29 05:33:20,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:33:20,695 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2021-10-29 05:33:20,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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) [2021-10-29 05:33:20,696 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2021-10-29 05:33:20,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-29 05:33:20,696 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:33:20,697 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-29 05:33:20,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-29 05:33:20,697 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-29 05:33:20,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:33:20,698 INFO L85 PathProgramCache]: Analyzing trace with hash 925739501, now seen corresponding path program 1 times [2021-10-29 05:33:20,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:33:20,698 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570605200] [2021-10-29 05:33:20,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:33:20,699 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:33:20,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:33:20,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:33:20,721 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:33:20,721 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570605200] [2021-10-29 05:33:20,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570605200] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:33:20,721 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:33:20,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-29 05:33:20,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524068538] [2021-10-29 05:33:20,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 05:33:20,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:33:20,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 05:33:20,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:33:20,723 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:33:20,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:33:20,735 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2021-10-29 05:33:20,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:33:20,736 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-29 05:33:20,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:33:20,737 INFO L225 Difference]: With dead ends: 24 [2021-10-29 05:33:20,737 INFO L226 Difference]: Without dead ends: 23 [2021-10-29 05:33:20,737 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:33:20,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-29 05:33:20,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 19. [2021-10-29 05:33:20,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 18 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:33:20,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2021-10-29 05:33:20,741 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 6 [2021-10-29 05:33:20,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:33:20,742 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2021-10-29 05:33:20,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:33:20,742 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2021-10-29 05:33:20,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-29 05:33:20,743 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:33:20,743 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:33:20,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-29 05:33:20,744 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-29 05:33:20,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:33:20,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1366846491, now seen corresponding path program 1 times [2021-10-29 05:33:20,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:33:20,745 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479028043] [2021-10-29 05:33:20,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:33:20,745 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:33:20,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:33:20,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:33:20,776 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:33:20,776 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479028043] [2021-10-29 05:33:20,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479028043] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:33:20,776 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:33:20,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 05:33:20,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611061864] [2021-10-29 05:33:20,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:33:20,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:33:20,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:33:20,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:33:20,779 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) 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) [2021-10-29 05:33:20,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:33:20,846 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2021-10-29 05:33:20,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 05:33:20,847 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) 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 [2021-10-29 05:33:20,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:33:20,847 INFO L225 Difference]: With dead ends: 27 [2021-10-29 05:33:20,847 INFO L226 Difference]: Without dead ends: 26 [2021-10-29 05:33:20,848 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:33:20,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-10-29 05:33:20,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 20. [2021-10-29 05:33:20,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 19 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:33:20,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2021-10-29 05:33:20,852 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 7 [2021-10-29 05:33:20,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:33:20,852 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2021-10-29 05:33:20,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) 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) [2021-10-29 05:33:20,852 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2021-10-29 05:33:20,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-29 05:33:20,853 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:33:20,853 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:33:20,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-29 05:33:20,853 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-29 05:33:20,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:33:20,854 INFO L85 PathProgramCache]: Analyzing trace with hash 577431791, now seen corresponding path program 1 times [2021-10-29 05:33:20,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:33:20,855 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23008287] [2021-10-29 05:33:20,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:33:20,856 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:33:20,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:33:20,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:33:20,924 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:33:20,924 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23008287] [2021-10-29 05:33:20,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23008287] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:33:20,924 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:33:20,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 05:33:20,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595456688] [2021-10-29 05:33:20,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:33:20,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:33:20,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:33:20,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:33:20,933 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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) [2021-10-29 05:33:20,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:33:20,979 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2021-10-29 05:33:20,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 05:33:20,980 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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 [2021-10-29 05:33:20,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:33:20,982 INFO L225 Difference]: With dead ends: 27 [2021-10-29 05:33:20,982 INFO L226 Difference]: Without dead ends: 26 [2021-10-29 05:33:20,983 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:33:20,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-10-29 05:33:20,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 21. [2021-10-29 05:33:20,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 15 states have (on average 1.4) internal successors, (21), 20 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:33:20,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2021-10-29 05:33:20,987 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 8 [2021-10-29 05:33:20,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:33:20,988 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2021-10-29 05:33:20,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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) [2021-10-29 05:33:20,988 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2021-10-29 05:33:20,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-29 05:33:20,989 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:33:20,989 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:33:20,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-29 05:33:20,990 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-29 05:33:20,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:33:20,990 INFO L85 PathProgramCache]: Analyzing trace with hash 861171249, now seen corresponding path program 1 times [2021-10-29 05:33:20,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:33:20,991 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580743043] [2021-10-29 05:33:20,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:33:20,991 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:33:21,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:33:21,044 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:33:21,044 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:33:21,044 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580743043] [2021-10-29 05:33:21,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580743043] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 05:33:21,045 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675079641] [2021-10-29 05:33:21,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:33:21,046 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:33:21,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fdd0b0-e596-4924-acb3-a75bd2c1311d/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:33:21,048 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fdd0b0-e596-4924-acb3-a75bd2c1311d/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:33:21,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fdd0b0-e596-4924-acb3-a75bd2c1311d/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-29 05:33:21,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:33:21,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-29 05:33:21,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:33:21,276 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:33:21,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:33:21,369 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:33:21,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [675079641] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 05:33:21,370 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1117302081] [2021-10-29 05:33:21,396 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-10-29 05:33:21,396 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 05:33:21,402 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 05:33:21,408 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 05:33:21,409 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 05:33:21,462 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:33:21,474 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-10-29 05:33:21,496 INFO L180 QuantifierPusher]: treesize reduction 7, result has 82.1 percent of original size [2021-10-29 05:33:21,513 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-10-29 05:33:21,516 INFO L180 QuantifierPusher]: treesize reduction 8, result has 81.0 percent of original size [2021-10-29 05:33:21,520 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-10-29 05:33:21,527 INFO L180 QuantifierPusher]: treesize reduction 8, result has 81.8 percent of original size [2021-10-29 05:33:21,530 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-29 05:33:21,538 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:21,569 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:21,612 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:21,648 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:33:21,669 INFO L185 QuantifierPusher]: treesize reduction 6, result has 91.7 percent of original size 66 [2021-10-29 05:33:21,680 INFO L180 QuantifierPusher]: treesize reduction 14, result has 83.7 percent of original size [2021-10-29 05:33:21,694 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-10-29 05:33:21,701 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.9 percent of original size [2021-10-29 05:33:21,706 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-10-29 05:33:21,712 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:21,735 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:21,736 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:21,737 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:21,743 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:21,746 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:33:21,748 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-10-29 05:33:21,751 INFO L180 QuantifierPusher]: treesize reduction 5, result has 88.1 percent of original size [2021-10-29 05:33:21,753 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-29 05:33:21,756 INFO L180 QuantifierPusher]: treesize reduction 8, result has 83.0 percent of original size [2021-10-29 05:33:21,758 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-29 05:33:21,761 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:21,765 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:21,771 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:21,782 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.0 percent of original size [2021-10-29 05:33:21,790 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-10-29 05:33:21,794 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.2 percent of original size [2021-10-29 05:33:21,799 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-10-29 05:33:21,803 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.7 percent of original size [2021-10-29 05:33:21,807 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-10-29 05:33:21,811 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:21,825 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:21,832 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:21,860 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:33:21,862 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-10-29 05:33:21,869 INFO L180 QuantifierPusher]: treesize reduction 5, result has 88.1 percent of original size [2021-10-29 05:33:21,873 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-29 05:33:21,877 INFO L180 QuantifierPusher]: treesize reduction 8, result has 83.0 percent of original size [2021-10-29 05:33:21,882 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-29 05:33:21,890 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:33:21,894 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-10-29 05:33:21,901 INFO L180 QuantifierPusher]: treesize reduction 5, result has 88.1 percent of original size [2021-10-29 05:33:21,905 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-29 05:33:21,910 INFO L180 QuantifierPusher]: treesize reduction 8, result has 83.0 percent of original size [2021-10-29 05:33:21,913 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-29 05:33:21,915 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:21,925 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:21,934 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:21,942 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:21,953 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:21,961 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:21,969 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:21,974 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:21,993 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:22,013 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:22,018 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:22,026 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:22,031 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:22,034 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-29 05:33:22,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1117302081] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:33:22,437 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2021-10-29 05:33:22,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [3, 3, 3] total 16 [2021-10-29 05:33:22,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191511411] [2021-10-29 05:33:22,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-29 05:33:22,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:33:22,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-29 05:33:22,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2021-10-29 05:33:22,440 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:33:22,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:33:22,512 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2021-10-29 05:33:22,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-29 05:33:22,513 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-29 05:33:22,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:33:22,519 INFO L225 Difference]: With dead ends: 21 [2021-10-29 05:33:22,520 INFO L226 Difference]: Without dead ends: 17 [2021-10-29 05:33:22,520 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2021-10-29 05:33:22,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-10-29 05:33:22,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2021-10-29 05:33:22,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 15 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:33:22,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-10-29 05:33:22,527 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 10 [2021-10-29 05:33:22,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:33:22,527 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-10-29 05:33:22,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:33:22,527 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-10-29 05:33:22,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-29 05:33:22,528 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:33:22,528 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-29 05:33:22,569 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fdd0b0-e596-4924-acb3-a75bd2c1311d/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-29 05:33:22,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fdd0b0-e596-4924-acb3-a75bd2c1311d/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:33:22,747 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-29 05:33:22,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:33:22,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1343116429, now seen corresponding path program 1 times [2021-10-29 05:33:22,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:33:22,748 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921616273] [2021-10-29 05:33:22,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:33:22,748 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:33:22,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:33:22,781 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:33:22,782 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:33:22,782 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921616273] [2021-10-29 05:33:22,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921616273] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 05:33:22,782 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516070959] [2021-10-29 05:33:22,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:33:22,783 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:33:22,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fdd0b0-e596-4924-acb3-a75bd2c1311d/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:33:22,784 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fdd0b0-e596-4924-acb3-a75bd2c1311d/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:33:22,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fdd0b0-e596-4924-acb3-a75bd2c1311d/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-29 05:33:22,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:33:22,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-29 05:33:22,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:33:22,914 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:33:22,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:33:22,979 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:33:22,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1516070959] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 05:33:22,979 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1178946470] [2021-10-29 05:33:22,982 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-10-29 05:33:22,982 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 05:33:22,982 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 05:33:22,983 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 05:33:22,983 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 05:33:22,989 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:33:22,991 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-10-29 05:33:22,994 INFO L180 QuantifierPusher]: treesize reduction 7, result has 82.1 percent of original size [2021-10-29 05:33:22,996 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-10-29 05:33:22,998 INFO L180 QuantifierPusher]: treesize reduction 8, result has 81.0 percent of original size [2021-10-29 05:33:23,000 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-10-29 05:33:23,002 INFO L180 QuantifierPusher]: treesize reduction 8, result has 81.8 percent of original size [2021-10-29 05:33:23,004 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-10-29 05:33:23,006 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:23,009 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:23,012 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:23,019 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:33:23,026 INFO L185 QuantifierPusher]: treesize reduction 6, result has 91.7 percent of original size 66 [2021-10-29 05:33:23,030 INFO L180 QuantifierPusher]: treesize reduction 14, result has 83.7 percent of original size [2021-10-29 05:33:23,034 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-10-29 05:33:23,038 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.9 percent of original size [2021-10-29 05:33:23,041 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-10-29 05:33:23,044 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:23,052 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:23,054 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:23,054 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:23,058 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:23,060 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:33:23,062 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-10-29 05:33:23,064 INFO L180 QuantifierPusher]: treesize reduction 5, result has 88.1 percent of original size [2021-10-29 05:33:23,082 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-29 05:33:23,085 INFO L180 QuantifierPusher]: treesize reduction 8, result has 83.0 percent of original size [2021-10-29 05:33:23,087 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-29 05:33:23,094 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:23,097 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:23,101 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:23,113 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.0 percent of original size [2021-10-29 05:33:23,133 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-10-29 05:33:23,137 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.2 percent of original size [2021-10-29 05:33:23,140 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-10-29 05:33:23,144 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.7 percent of original size [2021-10-29 05:33:23,148 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-10-29 05:33:23,153 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:23,172 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:23,179 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:23,182 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:33:23,186 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-10-29 05:33:23,189 INFO L180 QuantifierPusher]: treesize reduction 5, result has 88.1 percent of original size [2021-10-29 05:33:23,192 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-29 05:33:23,194 INFO L180 QuantifierPusher]: treesize reduction 8, result has 83.0 percent of original size [2021-10-29 05:33:23,198 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-29 05:33:23,202 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:33:23,204 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-10-29 05:33:23,207 INFO L180 QuantifierPusher]: treesize reduction 5, result has 88.1 percent of original size [2021-10-29 05:33:23,209 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-29 05:33:23,214 INFO L180 QuantifierPusher]: treesize reduction 8, result has 83.0 percent of original size [2021-10-29 05:33:23,215 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-29 05:33:23,217 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:23,220 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:23,226 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:23,228 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:23,235 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:23,238 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:23,240 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:23,243 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:23,249 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-29 05:33:23,598 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 05:33:23,598 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-29 05:33:23,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2021-10-29 05:33:23,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483068971] [2021-10-29 05:33:23,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-29 05:33:23,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:33:23,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-29 05:33:23,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2021-10-29 05:33:23,600 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:33:23,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:33:23,739 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2021-10-29 05:33:23,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-29 05:33:23,739 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 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 12 [2021-10-29 05:33:23,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:33:23,740 INFO L225 Difference]: With dead ends: 37 [2021-10-29 05:33:23,740 INFO L226 Difference]: Without dead ends: 35 [2021-10-29 05:33:23,741 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2021-10-29 05:33:23,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-10-29 05:33:23,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-10-29 05:33:23,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 33 states have (on average 1.0606060606060606) internal successors, (35), 34 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:33:23,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2021-10-29 05:33:23,750 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 12 [2021-10-29 05:33:23,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:33:23,750 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2021-10-29 05:33:23,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:33:23,751 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2021-10-29 05:33:23,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-29 05:33:23,752 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:33:23,752 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 1, 1] [2021-10-29 05:33:23,789 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fdd0b0-e596-4924-acb3-a75bd2c1311d/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-10-29 05:33:23,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fdd0b0-e596-4924-acb3-a75bd2c1311d/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:33:23,967 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-29 05:33:23,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:33:23,967 INFO L85 PathProgramCache]: Analyzing trace with hash 992275125, now seen corresponding path program 1 times [2021-10-29 05:33:23,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:33:23,968 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152234323] [2021-10-29 05:33:23,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:33:23,968 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:33:23,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:33:24,055 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:33:24,055 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:33:24,057 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152234323] [2021-10-29 05:33:24,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152234323] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 05:33:24,058 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496742140] [2021-10-29 05:33:24,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:33:24,058 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:33:24,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fdd0b0-e596-4924-acb3-a75bd2c1311d/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:33:24,063 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fdd0b0-e596-4924-acb3-a75bd2c1311d/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:33:24,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fdd0b0-e596-4924-acb3-a75bd2c1311d/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-29 05:33:24,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:33:24,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-29 05:33:24,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:33:24,212 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:33:24,212 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:33:24,343 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:33:24,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1496742140] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 05:33:24,343 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1354298227] [2021-10-29 05:33:24,346 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-10-29 05:33:24,346 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 05:33:24,346 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 05:33:24,346 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 05:33:24,346 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 05:33:24,352 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:33:24,353 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-10-29 05:33:24,356 INFO L180 QuantifierPusher]: treesize reduction 7, result has 82.1 percent of original size [2021-10-29 05:33:24,358 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-10-29 05:33:24,359 INFO L180 QuantifierPusher]: treesize reduction 8, result has 81.0 percent of original size [2021-10-29 05:33:24,361 INFO L185 QuantifierPusher]: treesize reduction 8, result has 71.4 percent of original size 20 [2021-10-29 05:33:24,363 INFO L180 QuantifierPusher]: treesize reduction 16, result has 61.9 percent of original size [2021-10-29 05:33:24,364 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-10-29 05:33:24,366 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:24,384 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:24,386 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:24,391 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:33:24,395 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-10-29 05:33:24,397 INFO L180 QuantifierPusher]: treesize reduction 10, result has 87.8 percent of original size [2021-10-29 05:33:24,400 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-10-29 05:33:24,403 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.9 percent of original size [2021-10-29 05:33:24,412 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-10-29 05:33:24,415 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:24,422 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:24,423 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:24,423 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:24,426 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:24,428 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:33:24,430 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-10-29 05:33:24,431 INFO L180 QuantifierPusher]: treesize reduction 5, result has 88.1 percent of original size [2021-10-29 05:33:24,433 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-29 05:33:24,435 INFO L180 QuantifierPusher]: treesize reduction 8, result has 83.0 percent of original size [2021-10-29 05:33:24,436 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-29 05:33:24,439 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:24,441 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:24,444 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:24,451 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.0 percent of original size [2021-10-29 05:33:24,458 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-10-29 05:33:24,461 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.2 percent of original size [2021-10-29 05:33:24,464 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-10-29 05:33:24,467 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.7 percent of original size [2021-10-29 05:33:24,473 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-10-29 05:33:24,476 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:24,483 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:24,485 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:24,487 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:33:24,489 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-10-29 05:33:24,490 INFO L180 QuantifierPusher]: treesize reduction 5, result has 88.1 percent of original size [2021-10-29 05:33:24,492 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-29 05:33:24,493 INFO L180 QuantifierPusher]: treesize reduction 8, result has 83.0 percent of original size [2021-10-29 05:33:24,495 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-29 05:33:24,499 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:33:24,501 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-10-29 05:33:24,506 INFO L180 QuantifierPusher]: treesize reduction 5, result has 88.1 percent of original size [2021-10-29 05:33:24,507 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-29 05:33:24,511 INFO L180 QuantifierPusher]: treesize reduction 8, result has 83.0 percent of original size [2021-10-29 05:33:24,512 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-29 05:33:24,513 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:24,515 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:24,518 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:24,521 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:24,525 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:24,527 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:24,529 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:24,531 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:24,536 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-29 05:33:24,904 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 05:33:24,904 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-29 05:33:24,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2021-10-29 05:33:24,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60904535] [2021-10-29 05:33:24,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-29 05:33:24,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:33:24,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-29 05:33:24,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=397, Unknown=0, NotChecked=0, Total=462 [2021-10-29 05:33:24,907 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand has 14 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:33:25,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:33:25,199 INFO L93 Difference]: Finished difference Result 68 states and 74 transitions. [2021-10-29 05:33:25,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-29 05:33:25,200 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 states have internal predecessors, (56), 0 states have call successors, (0), 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 28 [2021-10-29 05:33:25,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:33:25,201 INFO L225 Difference]: With dead ends: 68 [2021-10-29 05:33:25,201 INFO L226 Difference]: Without dead ends: 66 [2021-10-29 05:33:25,202 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=230, Invalid=892, Unknown=0, NotChecked=0, Total=1122 [2021-10-29 05:33:25,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-10-29 05:33:25,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2021-10-29 05:33:25,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 63 states have (on average 1.0476190476190477) internal successors, (66), 64 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:33:25,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 66 transitions. [2021-10-29 05:33:25,216 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 66 transitions. Word has length 28 [2021-10-29 05:33:25,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:33:25,217 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 66 transitions. [2021-10-29 05:33:25,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:33:25,219 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 66 transitions. [2021-10-29 05:33:25,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-10-29 05:33:25,222 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:33:25,222 INFO L513 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 1, 1] [2021-10-29 05:33:25,266 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fdd0b0-e596-4924-acb3-a75bd2c1311d/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-29 05:33:25,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fdd0b0-e596-4924-acb3-a75bd2c1311d/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2021-10-29 05:33:25,436 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-29 05:33:25,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:33:25,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1090881907, now seen corresponding path program 2 times [2021-10-29 05:33:25,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:33:25,436 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385385280] [2021-10-29 05:33:25,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:33:25,437 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:33:25,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:33:25,612 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 175 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:33:25,613 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:33:25,613 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385385280] [2021-10-29 05:33:25,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385385280] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 05:33:25,613 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778447557] [2021-10-29 05:33:25,613 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-29 05:33:25,614 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:33:25,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fdd0b0-e596-4924-acb3-a75bd2c1311d/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:33:25,615 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fdd0b0-e596-4924-acb3-a75bd2c1311d/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:33:25,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fdd0b0-e596-4924-acb3-a75bd2c1311d/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-29 05:33:25,722 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-10-29 05:33:25,723 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 05:33:25,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-29 05:33:25,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:33:26,273 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 33 proven. 142 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:33:26,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:33:27,039 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 9 proven. 166 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:33:27,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1778447557] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 05:33:27,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [7535322] [2021-10-29 05:33:27,042 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-10-29 05:33:27,042 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 05:33:27,043 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 05:33:27,043 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 05:33:27,043 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 05:33:27,047 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:33:27,049 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-10-29 05:33:27,052 INFO L180 QuantifierPusher]: treesize reduction 7, result has 82.1 percent of original size [2021-10-29 05:33:27,073 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-10-29 05:33:27,075 INFO L180 QuantifierPusher]: treesize reduction 8, result has 81.0 percent of original size [2021-10-29 05:33:27,077 INFO L185 QuantifierPusher]: treesize reduction 8, result has 71.4 percent of original size 20 [2021-10-29 05:33:27,078 INFO L180 QuantifierPusher]: treesize reduction 16, result has 61.9 percent of original size [2021-10-29 05:33:27,080 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-10-29 05:33:27,081 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:27,083 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:27,085 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:27,090 INFO L180 QuantifierPusher]: treesize reduction 7, result has 90.0 percent of original size [2021-10-29 05:33:27,094 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-10-29 05:33:27,097 INFO L180 QuantifierPusher]: treesize reduction 8, result has 88.7 percent of original size [2021-10-29 05:33:27,099 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-10-29 05:33:27,102 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.2 percent of original size [2021-10-29 05:33:27,105 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-10-29 05:33:27,107 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:27,113 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:27,114 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:27,115 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:27,115 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:27,118 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:27,121 INFO L180 QuantifierPusher]: treesize reduction 7, result has 83.3 percent of original size [2021-10-29 05:33:27,122 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-10-29 05:33:27,124 INFO L180 QuantifierPusher]: treesize reduction 5, result has 88.9 percent of original size [2021-10-29 05:33:27,126 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-10-29 05:33:27,128 INFO L180 QuantifierPusher]: treesize reduction 8, result has 84.0 percent of original size [2021-10-29 05:33:27,130 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-10-29 05:33:27,132 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:27,134 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:27,137 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:27,144 INFO L180 QuantifierPusher]: treesize reduction 10, result has 85.9 percent of original size [2021-10-29 05:33:27,148 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-10-29 05:33:27,154 INFO L180 QuantifierPusher]: treesize reduction 5, result has 92.6 percent of original size [2021-10-29 05:33:27,157 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-10-29 05:33:27,160 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.2 percent of original size [2021-10-29 05:33:27,164 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-10-29 05:33:27,166 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:27,171 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:27,174 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:27,178 INFO L180 QuantifierPusher]: treesize reduction 7, result has 83.3 percent of original size [2021-10-29 05:33:27,180 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-10-29 05:33:27,182 INFO L180 QuantifierPusher]: treesize reduction 5, result has 88.9 percent of original size [2021-10-29 05:33:27,183 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-10-29 05:33:27,185 INFO L180 QuantifierPusher]: treesize reduction 8, result has 84.0 percent of original size [2021-10-29 05:33:27,187 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-10-29 05:33:27,194 INFO L180 QuantifierPusher]: treesize reduction 7, result has 83.3 percent of original size [2021-10-29 05:33:27,197 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-10-29 05:33:27,201 INFO L180 QuantifierPusher]: treesize reduction 5, result has 88.9 percent of original size [2021-10-29 05:33:27,203 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-10-29 05:33:27,207 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-29 05:33:27,863 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 05:33:27,863 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-29 05:33:27,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 16, 16] total 44 [2021-10-29 05:33:27,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689862208] [2021-10-29 05:33:27,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-10-29 05:33:27,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:33:27,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-10-29 05:33:27,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=2435, Unknown=0, NotChecked=0, Total=2756 [2021-10-29 05:33:27,867 INFO L87 Difference]: Start difference. First operand 65 states and 66 transitions. Second operand has 46 states, 45 states have (on average 3.6) internal successors, (162), 45 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:33:30,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:33:30,399 INFO L93 Difference]: Finished difference Result 74 states and 76 transitions. [2021-10-29 05:33:30,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-29 05:33:30,400 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 3.6) internal successors, (162), 45 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-10-29 05:33:30,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:33:30,401 INFO L225 Difference]: With dead ends: 74 [2021-10-29 05:33:30,401 INFO L226 Difference]: Without dead ends: 73 [2021-10-29 05:33:30,406 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 113 SyntacticMatches, 8 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2536 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1514, Invalid=7416, Unknown=0, NotChecked=0, Total=8930 [2021-10-29 05:33:30,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-10-29 05:33:30,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 64. [2021-10-29 05:33:30,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.0158730158730158) internal successors, (64), 63 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:33:30,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 64 transitions. [2021-10-29 05:33:30,415 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 64 transitions. Word has length 54 [2021-10-29 05:33:30,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:33:30,416 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 64 transitions. [2021-10-29 05:33:30,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 3.6) internal successors, (162), 45 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:33:30,416 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 64 transitions. [2021-10-29 05:33:30,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-10-29 05:33:30,419 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:33:30,419 INFO L513 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 8, 8, 1, 1] [2021-10-29 05:33:30,456 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fdd0b0-e596-4924-acb3-a75bd2c1311d/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-29 05:33:30,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fdd0b0-e596-4924-acb3-a75bd2c1311d/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable80 [2021-10-29 05:33:30,642 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-29 05:33:30,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:33:30,643 INFO L85 PathProgramCache]: Analyzing trace with hash 995912677, now seen corresponding path program 2 times [2021-10-29 05:33:30,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:33:30,643 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759906024] [2021-10-29 05:33:30,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:33:30,643 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:33:30,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:33:30,785 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 0 proven. 244 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:33:30,785 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:33:30,785 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759906024] [2021-10-29 05:33:30,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759906024] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 05:33:30,785 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1087563395] [2021-10-29 05:33:30,786 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-29 05:33:30,786 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:33:30,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fdd0b0-e596-4924-acb3-a75bd2c1311d/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:33:30,787 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fdd0b0-e596-4924-acb3-a75bd2c1311d/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:33:30,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fdd0b0-e596-4924-acb3-a75bd2c1311d/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-29 05:33:30,927 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-10-29 05:33:30,927 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 05:33:30,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 33 conjunts are in the unsatisfiable core [2021-10-29 05:33:30,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:33:31,989 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 0 proven. 244 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:33:31,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:33:33,616 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 0 proven. 244 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:33:33,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1087563395] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 05:33:33,617 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [15537502] [2021-10-29 05:33:33,619 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-10-29 05:33:33,619 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 05:33:33,619 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 05:33:33,619 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 05:33:33,619 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 05:33:33,628 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:33:33,632 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-10-29 05:33:33,633 INFO L180 QuantifierPusher]: treesize reduction 7, result has 82.1 percent of original size [2021-10-29 05:33:33,643 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-10-29 05:33:33,647 INFO L180 QuantifierPusher]: treesize reduction 8, result has 81.0 percent of original size [2021-10-29 05:33:33,649 INFO L185 QuantifierPusher]: treesize reduction 8, result has 71.4 percent of original size 20 [2021-10-29 05:33:33,651 INFO L180 QuantifierPusher]: treesize reduction 16, result has 61.9 percent of original size [2021-10-29 05:33:33,658 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-10-29 05:33:33,659 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:33,664 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:33,665 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:33,672 INFO L180 QuantifierPusher]: treesize reduction 7, result has 90.0 percent of original size [2021-10-29 05:33:33,676 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-10-29 05:33:33,679 INFO L180 QuantifierPusher]: treesize reduction 8, result has 88.7 percent of original size [2021-10-29 05:33:33,681 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-10-29 05:33:33,683 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.2 percent of original size [2021-10-29 05:33:33,685 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-10-29 05:33:33,687 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:33,693 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:33,694 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:33,695 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:33,696 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:33,698 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:33,701 INFO L180 QuantifierPusher]: treesize reduction 7, result has 83.3 percent of original size [2021-10-29 05:33:33,702 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-10-29 05:33:33,704 INFO L180 QuantifierPusher]: treesize reduction 5, result has 88.9 percent of original size [2021-10-29 05:33:33,705 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-10-29 05:33:33,707 INFO L180 QuantifierPusher]: treesize reduction 8, result has 84.0 percent of original size [2021-10-29 05:33:33,708 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-10-29 05:33:33,709 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:33,711 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:33,714 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:33,720 INFO L180 QuantifierPusher]: treesize reduction 10, result has 85.9 percent of original size [2021-10-29 05:33:33,724 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-10-29 05:33:33,726 INFO L180 QuantifierPusher]: treesize reduction 5, result has 92.6 percent of original size [2021-10-29 05:33:33,730 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-10-29 05:33:33,732 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.2 percent of original size [2021-10-29 05:33:33,735 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-10-29 05:33:33,737 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:33,743 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:33,746 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:33,748 INFO L180 QuantifierPusher]: treesize reduction 7, result has 83.3 percent of original size [2021-10-29 05:33:33,750 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-10-29 05:33:33,751 INFO L180 QuantifierPusher]: treesize reduction 5, result has 88.9 percent of original size [2021-10-29 05:33:33,753 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-10-29 05:33:33,754 INFO L180 QuantifierPusher]: treesize reduction 8, result has 84.0 percent of original size [2021-10-29 05:33:33,755 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-10-29 05:33:33,760 INFO L180 QuantifierPusher]: treesize reduction 7, result has 83.3 percent of original size [2021-10-29 05:33:33,762 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-10-29 05:33:33,764 INFO L180 QuantifierPusher]: treesize reduction 5, result has 88.9 percent of original size [2021-10-29 05:33:33,767 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-10-29 05:33:33,768 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-29 05:33:34,625 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 05:33:34,625 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-29 05:33:34,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 24, 24] total 62 [2021-10-29 05:33:34,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845745003] [2021-10-29 05:33:34,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2021-10-29 05:33:34,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:33:34,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-10-29 05:33:34,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=468, Invalid=4502, Unknown=0, NotChecked=0, Total=4970 [2021-10-29 05:33:34,630 INFO L87 Difference]: Start difference. First operand 64 states and 64 transitions. Second operand has 64 states, 63 states have (on average 3.0) internal successors, (189), 63 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:33:39,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:33:39,594 INFO L93 Difference]: Finished difference Result 128 states and 136 transitions. [2021-10-29 05:33:39,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-10-29 05:33:39,595 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 3.0) internal successors, (189), 63 states have internal predecessors, (189), 0 states have call successors, (0), 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 63 [2021-10-29 05:33:39,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:33:39,596 INFO L225 Difference]: With dead ends: 128 [2021-10-29 05:33:39,596 INFO L226 Difference]: Without dead ends: 127 [2021-10-29 05:33:39,602 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 123 SyntacticMatches, 9 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3876 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=2879, Invalid=13377, Unknown=0, NotChecked=0, Total=16256 [2021-10-29 05:33:39,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-10-29 05:33:39,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2021-10-29 05:33:39,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.007936507936508) internal successors, (127), 126 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) [2021-10-29 05:33:39,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 127 transitions. [2021-10-29 05:33:39,616 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 127 transitions. Word has length 63 [2021-10-29 05:33:39,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:33:39,617 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 127 transitions. [2021-10-29 05:33:39,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 3.0) internal successors, (189), 63 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:33:39,617 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 127 transitions. [2021-10-29 05:33:39,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-10-29 05:33:39,621 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:33:39,621 INFO L513 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 17, 17, 1, 1] [2021-10-29 05:33:39,659 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fdd0b0-e596-4924-acb3-a75bd2c1311d/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-29 05:33:39,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fdd0b0-e596-4924-acb3-a75bd2c1311d/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable96 [2021-10-29 05:33:39,847 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-29 05:33:39,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:33:39,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1733496651, now seen corresponding path program 3 times [2021-10-29 05:33:39,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:33:39,847 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108205582] [2021-10-29 05:33:39,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:33:39,847 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:33:39,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:33:40,209 INFO L134 CoverageAnalysis]: Checked inductivity of 1054 backedges. 0 proven. 1054 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:33:40,210 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:33:40,210 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108205582] [2021-10-29 05:33:40,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108205582] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 05:33:40,210 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59340647] [2021-10-29 05:33:40,211 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-29 05:33:40,211 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:33:40,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fdd0b0-e596-4924-acb3-a75bd2c1311d/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:33:40,223 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fdd0b0-e596-4924-acb3-a75bd2c1311d/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:33:40,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fdd0b0-e596-4924-acb3-a75bd2c1311d/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-29 05:33:40,420 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-29 05:33:40,421 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 05:33:40,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-29 05:33:40,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:33:40,792 INFO L134 CoverageAnalysis]: Checked inductivity of 1054 backedges. 0 proven. 1054 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:33:40,793 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:33:41,722 INFO L134 CoverageAnalysis]: Checked inductivity of 1054 backedges. 0 proven. 1054 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:33:41,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [59340647] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 05:33:41,722 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [414648406] [2021-10-29 05:33:41,724 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-10-29 05:33:41,724 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 05:33:41,725 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 05:33:41,725 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 05:33:41,725 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 05:33:41,729 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:33:41,730 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-10-29 05:33:41,732 INFO L180 QuantifierPusher]: treesize reduction 7, result has 82.1 percent of original size [2021-10-29 05:33:41,734 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-10-29 05:33:41,735 INFO L180 QuantifierPusher]: treesize reduction 8, result has 81.0 percent of original size [2021-10-29 05:33:41,737 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-10-29 05:33:41,738 INFO L180 QuantifierPusher]: treesize reduction 8, result has 81.8 percent of original size [2021-10-29 05:33:41,739 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-10-29 05:33:41,741 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:41,750 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:41,753 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:41,757 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:33:41,760 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-10-29 05:33:41,762 INFO L180 QuantifierPusher]: treesize reduction 10, result has 88.8 percent of original size [2021-10-29 05:33:41,764 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-10-29 05:33:41,767 INFO L180 QuantifierPusher]: treesize reduction 5, result has 94.4 percent of original size [2021-10-29 05:33:41,769 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-10-29 05:33:41,772 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:41,778 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:41,779 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:41,780 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:41,814 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:41,817 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:33:41,818 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-10-29 05:33:41,820 INFO L180 QuantifierPusher]: treesize reduction 5, result has 88.1 percent of original size [2021-10-29 05:33:41,822 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-29 05:33:41,823 INFO L180 QuantifierPusher]: treesize reduction 8, result has 83.0 percent of original size [2021-10-29 05:33:41,825 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-29 05:33:41,826 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:41,829 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:41,831 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:41,836 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.0 percent of original size [2021-10-29 05:33:41,839 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-10-29 05:33:41,841 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.2 percent of original size [2021-10-29 05:33:41,843 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-10-29 05:33:41,845 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.7 percent of original size [2021-10-29 05:33:41,846 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-10-29 05:33:41,849 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:41,855 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:41,857 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:41,858 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:33:41,859 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-10-29 05:33:41,861 INFO L180 QuantifierPusher]: treesize reduction 5, result has 88.1 percent of original size [2021-10-29 05:33:41,866 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-29 05:33:41,870 INFO L180 QuantifierPusher]: treesize reduction 8, result has 83.0 percent of original size [2021-10-29 05:33:41,872 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-29 05:33:41,874 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:33:41,875 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-10-29 05:33:41,878 INFO L180 QuantifierPusher]: treesize reduction 5, result has 88.1 percent of original size [2021-10-29 05:33:41,879 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-29 05:33:41,882 INFO L180 QuantifierPusher]: treesize reduction 8, result has 83.0 percent of original size [2021-10-29 05:33:41,883 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-29 05:33:41,885 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:41,888 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:41,891 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:41,893 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:41,897 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:41,899 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:41,901 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:41,903 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:41,908 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-29 05:33:42,326 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 05:33:42,326 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-29 05:33:42,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 54 [2021-10-29 05:33:42,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089899917] [2021-10-29 05:33:42,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2021-10-29 05:33:42,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:33:42,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2021-10-29 05:33:42,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=590, Invalid=3442, Unknown=0, NotChecked=0, Total=4032 [2021-10-29 05:33:42,330 INFO L87 Difference]: Start difference. First operand 127 states and 127 transitions. Second operand has 56 states, 55 states have (on average 4.581818181818182) internal successors, (252), 55 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:33:44,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:33:44,341 INFO L93 Difference]: Finished difference Result 261 states and 279 transitions. [2021-10-29 05:33:44,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-10-29 05:33:44,342 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 55 states have (on average 4.581818181818182) internal successors, (252), 55 states have internal predecessors, (252), 0 states have call successors, (0), 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 126 [2021-10-29 05:33:44,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:33:44,344 INFO L225 Difference]: With dead ends: 261 [2021-10-29 05:33:44,344 INFO L226 Difference]: Without dead ends: 260 [2021-10-29 05:33:44,351 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 457 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3523 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=3597, Invalid=10209, Unknown=0, NotChecked=0, Total=13806 [2021-10-29 05:33:44,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2021-10-29 05:33:44,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 260. [2021-10-29 05:33:44,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 259 states have (on average 1.0038610038610039) internal successors, (260), 259 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:33:44,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 260 transitions. [2021-10-29 05:33:44,391 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 260 transitions. Word has length 126 [2021-10-29 05:33:44,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:33:44,392 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 260 transitions. [2021-10-29 05:33:44,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 55 states have (on average 4.581818181818182) internal successors, (252), 55 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:33:44,392 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 260 transitions. [2021-10-29 05:33:44,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2021-10-29 05:33:44,397 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:33:44,398 INFO L513 BasicCegarLoop]: trace histogram [37, 37, 37, 37, 37, 36, 36, 1, 1] [2021-10-29 05:33:44,435 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fdd0b0-e596-4924-acb3-a75bd2c1311d/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-29 05:33:44,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fdd0b0-e596-4924-acb3-a75bd2c1311d/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2021-10-29 05:33:44,618 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-29 05:33:44,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:33:44,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1259495397, now seen corresponding path program 4 times [2021-10-29 05:33:44,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:33:44,619 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735582593] [2021-10-29 05:33:44,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:33:44,619 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:33:44,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:33:45,996 INFO L134 CoverageAnalysis]: Checked inductivity of 4626 backedges. 0 proven. 4626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:33:45,996 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:33:45,996 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735582593] [2021-10-29 05:33:45,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735582593] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 05:33:45,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962340044] [2021-10-29 05:33:45,998 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-29 05:33:45,998 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:33:45,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fdd0b0-e596-4924-acb3-a75bd2c1311d/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:33:45,999 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fdd0b0-e596-4924-acb3-a75bd2c1311d/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:33:46,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fdd0b0-e596-4924-acb3-a75bd2c1311d/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-29 05:33:46,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:33:46,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 562 conjuncts, 57 conjunts are in the unsatisfiable core [2021-10-29 05:33:46,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:33:47,174 INFO L134 CoverageAnalysis]: Checked inductivity of 4626 backedges. 0 proven. 4626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:33:47,177 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:33:49,821 INFO L134 CoverageAnalysis]: Checked inductivity of 4626 backedges. 0 proven. 4626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:33:49,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962340044] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 05:33:49,821 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1286616952] [2021-10-29 05:33:49,827 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-10-29 05:33:49,827 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 05:33:49,827 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 05:33:49,828 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 05:33:49,828 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 05:33:49,831 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:33:49,832 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-10-29 05:33:49,837 INFO L180 QuantifierPusher]: treesize reduction 7, result has 82.1 percent of original size [2021-10-29 05:33:49,839 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-10-29 05:33:49,840 INFO L180 QuantifierPusher]: treesize reduction 8, result has 81.0 percent of original size [2021-10-29 05:33:49,841 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-10-29 05:33:49,843 INFO L180 QuantifierPusher]: treesize reduction 8, result has 81.8 percent of original size [2021-10-29 05:33:49,844 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-10-29 05:33:49,846 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:49,852 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:49,856 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:49,860 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:33:49,864 INFO L185 QuantifierPusher]: treesize reduction 6, result has 91.7 percent of original size 66 [2021-10-29 05:33:49,867 INFO L180 QuantifierPusher]: treesize reduction 14, result has 83.7 percent of original size [2021-10-29 05:33:49,868 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-10-29 05:33:49,870 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.9 percent of original size [2021-10-29 05:33:49,872 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-10-29 05:33:49,875 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:49,882 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:49,883 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:49,884 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:49,886 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:49,888 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:33:49,889 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-10-29 05:33:49,890 INFO L180 QuantifierPusher]: treesize reduction 5, result has 88.1 percent of original size [2021-10-29 05:33:49,892 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-29 05:33:49,894 INFO L180 QuantifierPusher]: treesize reduction 8, result has 83.0 percent of original size [2021-10-29 05:33:49,895 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-29 05:33:49,897 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:49,900 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:49,902 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:49,908 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.0 percent of original size [2021-10-29 05:33:49,910 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-10-29 05:33:49,912 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.2 percent of original size [2021-10-29 05:33:49,915 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-10-29 05:33:49,917 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.7 percent of original size [2021-10-29 05:33:49,918 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-10-29 05:33:49,921 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:49,927 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:49,929 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:49,931 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:33:49,932 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-10-29 05:33:49,933 INFO L180 QuantifierPusher]: treesize reduction 5, result has 88.1 percent of original size [2021-10-29 05:33:49,934 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-29 05:33:49,936 INFO L180 QuantifierPusher]: treesize reduction 8, result has 83.0 percent of original size [2021-10-29 05:33:49,941 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-29 05:33:49,944 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:33:49,945 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-10-29 05:33:49,948 INFO L180 QuantifierPusher]: treesize reduction 5, result has 88.1 percent of original size [2021-10-29 05:33:49,949 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-29 05:33:49,952 INFO L180 QuantifierPusher]: treesize reduction 8, result has 83.0 percent of original size [2021-10-29 05:33:49,954 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-29 05:33:49,955 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:49,957 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:49,960 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:49,962 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:49,966 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:49,968 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:49,970 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:49,972 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:33:49,975 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-29 05:33:50,490 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 05:33:50,490 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-29 05:33:50,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56, 56] total 112 [2021-10-29 05:33:50,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939396371] [2021-10-29 05:33:50,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 114 states [2021-10-29 05:33:50,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:33:50,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2021-10-29 05:33:50,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2283, Invalid=12479, Unknown=0, NotChecked=0, Total=14762 [2021-10-29 05:33:50,497 INFO L87 Difference]: Start difference. First operand 260 states and 260 transitions. Second operand has 114 states, 113 states have (on average 4.584070796460177) internal successors, (518), 113 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:33:56,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:33:56,579 INFO L93 Difference]: Finished difference Result 520 states and 556 transitions. [2021-10-29 05:33:56,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2021-10-29 05:33:56,579 INFO L78 Accepts]: Start accepts. Automaton has has 114 states, 113 states have (on average 4.584070796460177) internal successors, (518), 113 states have internal predecessors, (518), 0 states have call successors, (0), 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 259 [2021-10-29 05:33:56,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:33:56,582 INFO L225 Difference]: With dead ends: 520 [2021-10-29 05:33:56,582 INFO L226 Difference]: Without dead ends: 519 [2021-10-29 05:33:56,587 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 941 GetRequests, 711 SyntacticMatches, 0 SemanticMatches, 230 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13870 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=14679, Invalid=38913, Unknown=0, NotChecked=0, Total=53592 [2021-10-29 05:33:56,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2021-10-29 05:33:56,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 519. [2021-10-29 05:33:56,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 518 states have (on average 1.001930501930502) internal successors, (519), 518 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:33:56,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 519 transitions. [2021-10-29 05:33:56,624 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 519 transitions. Word has length 259 [2021-10-29 05:33:56,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:33:56,625 INFO L470 AbstractCegarLoop]: Abstraction has 519 states and 519 transitions. [2021-10-29 05:33:56,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 114 states, 113 states have (on average 4.584070796460177) internal successors, (518), 113 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:33:56,626 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 519 transitions. [2021-10-29 05:33:56,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 519 [2021-10-29 05:33:56,639 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:33:56,640 INFO L513 BasicCegarLoop]: trace histogram [74, 74, 74, 74, 74, 73, 73, 1, 1] [2021-10-29 05:33:56,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fdd0b0-e596-4924-acb3-a75bd2c1311d/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-29 05:33:56,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fdd0b0-e596-4924-acb3-a75bd2c1311d/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable135 [2021-10-29 05:33:56,855 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-29 05:33:56,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:33:56,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1537083573, now seen corresponding path program 5 times [2021-10-29 05:33:56,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:33:56,855 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649709393] [2021-10-29 05:33:56,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:33:56,855 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:33:57,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:34:00,550 INFO L134 CoverageAnalysis]: Checked inductivity of 18834 backedges. 0 proven. 18834 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:34:00,551 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:34:00,551 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649709393] [2021-10-29 05:34:00,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649709393] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 05:34:00,551 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178287269] [2021-10-29 05:34:00,551 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-29 05:34:00,551 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:34:00,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fdd0b0-e596-4924-acb3-a75bd2c1311d/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:34:00,552 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fdd0b0-e596-4924-acb3-a75bd2c1311d/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:34:00,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fdd0b0-e596-4924-acb3-a75bd2c1311d/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-29 05:34:01,015 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2021-10-29 05:34:01,016 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 05:34:01,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 34 conjunts are in the unsatisfiable core [2021-10-29 05:34:01,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:34:04,033 INFO L134 CoverageAnalysis]: Checked inductivity of 18834 backedges. 4361 proven. 297 refuted. 0 times theorem prover too weak. 14176 trivial. 0 not checked. [2021-10-29 05:34:04,033 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:34:15,597 INFO L134 CoverageAnalysis]: Checked inductivity of 18834 backedges. 4361 proven. 297 refuted. 0 times theorem prover too weak. 14176 trivial. 0 not checked. [2021-10-29 05:34:15,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1178287269] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 05:34:15,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [913298532] [2021-10-29 05:34:15,602 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-10-29 05:34:15,602 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 05:34:15,602 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 05:34:15,603 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 05:34:15,603 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 05:34:15,606 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:34:15,607 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-10-29 05:34:15,609 INFO L180 QuantifierPusher]: treesize reduction 7, result has 82.1 percent of original size [2021-10-29 05:34:15,611 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-10-29 05:34:15,612 INFO L180 QuantifierPusher]: treesize reduction 8, result has 81.0 percent of original size [2021-10-29 05:34:15,614 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-10-29 05:34:15,615 INFO L180 QuantifierPusher]: treesize reduction 8, result has 81.8 percent of original size [2021-10-29 05:34:15,618 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-10-29 05:34:15,620 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:34:15,630 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:34:15,633 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:34:15,637 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:34:15,642 INFO L185 QuantifierPusher]: treesize reduction 6, result has 91.7 percent of original size 66 [2021-10-29 05:34:15,644 INFO L180 QuantifierPusher]: treesize reduction 14, result has 83.7 percent of original size [2021-10-29 05:34:15,646 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-10-29 05:34:15,648 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.9 percent of original size [2021-10-29 05:34:15,650 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-10-29 05:34:15,655 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:34:15,663 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:34:15,665 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:34:15,666 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:34:15,668 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:34:15,669 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:34:15,671 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-10-29 05:34:15,672 INFO L180 QuantifierPusher]: treesize reduction 5, result has 88.1 percent of original size [2021-10-29 05:34:15,673 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-29 05:34:15,674 INFO L180 QuantifierPusher]: treesize reduction 8, result has 83.0 percent of original size [2021-10-29 05:34:15,675 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-29 05:34:15,677 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:34:15,679 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:34:15,688 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:34:15,697 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.0 percent of original size [2021-10-29 05:34:15,700 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-10-29 05:34:15,702 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.2 percent of original size [2021-10-29 05:34:15,704 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-10-29 05:34:15,705 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.7 percent of original size [2021-10-29 05:34:15,707 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-10-29 05:34:15,709 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:34:15,715 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:34:15,720 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:34:15,721 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:34:15,723 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-10-29 05:34:15,724 INFO L180 QuantifierPusher]: treesize reduction 5, result has 88.1 percent of original size [2021-10-29 05:34:15,725 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-29 05:34:15,726 INFO L180 QuantifierPusher]: treesize reduction 8, result has 83.0 percent of original size [2021-10-29 05:34:15,727 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-29 05:34:15,730 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:34:15,731 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-10-29 05:34:15,734 INFO L180 QuantifierPusher]: treesize reduction 5, result has 88.1 percent of original size [2021-10-29 05:34:15,735 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-29 05:34:15,738 INFO L180 QuantifierPusher]: treesize reduction 8, result has 83.0 percent of original size [2021-10-29 05:34:15,739 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-29 05:34:15,740 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:34:15,742 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:34:15,744 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:34:15,745 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:34:15,749 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:34:15,751 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:34:15,753 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:34:15,754 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:34:15,758 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-29 05:34:16,890 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 05:34:16,890 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-29 05:34:16,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [111, 27, 27] total 164 [2021-10-29 05:34:16,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244271842] [2021-10-29 05:34:16,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 165 states [2021-10-29 05:34:16,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:34:16,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 165 interpolants. [2021-10-29 05:34:16,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3189, Invalid=26567, Unknown=0, NotChecked=0, Total=29756 [2021-10-29 05:34:16,898 INFO L87 Difference]: Start difference. First operand 519 states and 519 transitions. Second operand has 165 states, 164 states have (on average 4.048780487804878) internal successors, (664), 165 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:38:54,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:38:54,568 INFO L93 Difference]: Finished difference Result 532 states and 533 transitions. [2021-10-29 05:38:54,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 380 states. [2021-10-29 05:38:54,569 INFO L78 Accepts]: Start accepts. Automaton has has 165 states, 164 states have (on average 4.048780487804878) internal successors, (664), 165 states have internal predecessors, (664), 0 states have call successors, (0), 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 518 [2021-10-29 05:38:54,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:38:54,569 INFO L225 Difference]: With dead ends: 532 [2021-10-29 05:38:54,570 INFO L226 Difference]: Without dead ends: 0 [2021-10-29 05:38:54,588 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2041 GetRequests, 1492 SyntacticMatches, 0 SemanticMatches, 549 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91733 ImplicationChecksByTransitivity, 281.3s TimeCoverageRelationStatistics Valid=60675, Invalid=242375, Unknown=0, NotChecked=0, Total=303050 [2021-10-29 05:38:54,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-29 05:38:54,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-29 05:38:54,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:38:54,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-29 05:38:54,588 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 518 [2021-10-29 05:38:54,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:38:54,589 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-29 05:38:54,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 165 states, 164 states have (on average 4.048780487804878) internal successors, (664), 165 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:38:54,590 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-29 05:38:54,590 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-29 05:38:54,593 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-29 05:38:54,593 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-29 05:38:54,594 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-29 05:38:54,594 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-29 05:38:54,594 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-29 05:38:54,594 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-29 05:38:54,631 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fdd0b0-e596-4924-acb3-a75bd2c1311d/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-10-29 05:38:54,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fdd0b0-e596-4924-acb3-a75bd2c1311d/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable158 [2021-10-29 05:38:54,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-29 05:38:54,818 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:39:00,374 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2021-10-29 05:39:00,374 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-29 05:39:00,375 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2021-10-29 05:39:00,375 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 26) no Hoare annotation was computed. [2021-10-29 05:39:00,375 INFO L857 garLoopResultBuilder]: For program point L25(line 25) no Hoare annotation was computed. [2021-10-29 05:39:00,375 INFO L857 garLoopResultBuilder]: For program point L25-1(line 25) no Hoare annotation was computed. [2021-10-29 05:39:00,375 INFO L857 garLoopResultBuilder]: For program point L23(line 23) no Hoare annotation was computed. [2021-10-29 05:39:00,375 INFO L857 garLoopResultBuilder]: For program point L23-1(line 23) no Hoare annotation was computed. [2021-10-29 05:39:00,375 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2021-10-29 05:39:00,376 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2021-10-29 05:39:00,376 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-29 05:39:00,376 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 26) no Hoare annotation was computed. [2021-10-29 05:39:00,376 INFO L857 garLoopResultBuilder]: For program point L26(line 26) no Hoare annotation was computed. [2021-10-29 05:39:00,377 INFO L857 garLoopResultBuilder]: For program point L26-1(line 26) no Hoare annotation was computed. [2021-10-29 05:39:00,377 INFO L853 garLoopResultBuilder]: At program point L22-2(lines 22 27) the Hoare annotation is: (let ((.cse3 (<= ULTIMATE.start_main_~d1old~0 75)) (.cse1 (<= ULTIMATE.start_main_~d1~0 75)) (.cse0 (or (and (= ULTIMATE.start_main_~d1~0 73) (= ULTIMATE.start_main_~d2~0 74) (<= ULTIMATE.start_main_~x~0 2147483647) (<= 0 (+ ULTIMATE.start_main_~x~0 2147483648))) (let ((.cse4 (+ ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~d1old~0))) (and (<= 0 .cse4) (<= 75 ULTIMATE.start_main_~d1~0) (<= ULTIMATE.start_main_~d1old~0 2147483646) (<= 73 ULTIMATE.start_main_~d1old~0) (= (+ ULTIMATE.start_main_~d1old~0 1) ULTIMATE.start_main_~d2~0) (<= .cse4 2147483647) (<= ULTIMATE.start_main_~d1~0 2147483647)))))) (or (and .cse0 .cse1 (<= ULTIMATE.start_main_~d1old~0 73)) (let ((.cse2 (* ULTIMATE.start_main_~x~0 (- 1)))) (and (or (and .cse0 (<= ULTIMATE.start_main_~d1old~0 (div (+ 2147483570 .cse2) 2)) (<= 79 ULTIMATE.start_main_~d1~0)) (and (<= (+ ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~d1~0) 2147483570) .cse0 (<= 78 ULTIMATE.start_main_~d2~0))) (< ULTIMATE.start_main_~d1old~0 2147483646) (< ULTIMATE.start_main_~d1~0 2147483646) (< ULTIMATE.start_main_~d1old~0 (+ (div (+ .cse2 (- 7)) 4) (div (+ 4294967290 .cse2) 2) 1)))) (and (<= 77 ULTIMATE.start_main_~d1~0) .cse0 .cse3 (<= ULTIMATE.start_main_~d1~0 77) (<= (+ ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~d2~0) 2147483500)) (and .cse0 .cse3 (<= ULTIMATE.start_main_~x~0 2147483499) (<= 75 ULTIMATE.start_main_~d1old~0) .cse1) (and .cse0 (<= ULTIMATE.start_main_~d1~0 73)))) [2021-10-29 05:39:00,380 INFO L731 BasicCegarLoop]: Path program histogram: [5, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:39:00,382 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:39:00,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:39:00 BoogieIcfgContainer [2021-10-29 05:39:00,419 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:39:00,420 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:39:00,420 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:39:00,420 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:39:00,421 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:33:20" (3/4) ... [2021-10-29 05:39:00,424 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-29 05:39:00,431 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-10-29 05:39:00,431 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-10-29 05:39:00,432 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-29 05:39:00,454 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((d1 == 73 && d2 == 74) && x <= 2147483647) && 0 <= x + 2147483648) || ((((((0 <= x + d1\old && 75 <= d1) && d1\old <= 2147483646) && 73 <= d1\old) && d1\old + 1 == d2) && x + d1\old <= 2147483647) && d1 <= 2147483647)) && d1 <= 75) && d1\old <= 73) || ((((((((((d1 == 73 && d2 == 74) && x <= 2147483647) && 0 <= x + 2147483648) || ((((((0 <= x + d1\old && 75 <= d1) && d1\old <= 2147483646) && 73 <= d1\old) && d1\old + 1 == d2) && x + d1\old <= 2147483647) && d1 <= 2147483647)) && d1\old <= (2147483570 + x * -1) / 2) && 79 <= d1) || ((x + d1 <= 2147483570 && ((((d1 == 73 && d2 == 74) && x <= 2147483647) && 0 <= x + 2147483648) || ((((((0 <= x + d1\old && 75 <= d1) && d1\old <= 2147483646) && 73 <= d1\old) && d1\old + 1 == d2) && x + d1\old <= 2147483647) && d1 <= 2147483647))) && 78 <= d2)) && d1\old < 2147483646) && d1 < 2147483646) && d1\old < (x * -1 + -7) / 4 + (4294967290 + x * -1) / 2 + 1)) || ((((77 <= d1 && ((((d1 == 73 && d2 == 74) && x <= 2147483647) && 0 <= x + 2147483648) || ((((((0 <= x + d1\old && 75 <= d1) && d1\old <= 2147483646) && 73 <= d1\old) && d1\old + 1 == d2) && x + d1\old <= 2147483647) && d1 <= 2147483647))) && d1\old <= 75) && d1 <= 77) && x + d2 <= 2147483500)) || ((((((((d1 == 73 && d2 == 74) && x <= 2147483647) && 0 <= x + 2147483648) || ((((((0 <= x + d1\old && 75 <= d1) && d1\old <= 2147483646) && 73 <= d1\old) && d1\old + 1 == d2) && x + d1\old <= 2147483647) && d1 <= 2147483647)) && d1\old <= 75) && x <= 2147483499) && 75 <= d1\old) && d1 <= 75)) || (((((d1 == 73 && d2 == 74) && x <= 2147483647) && 0 <= x + 2147483648) || ((((((0 <= x + d1\old && 75 <= d1) && d1\old <= 2147483646) && 73 <= d1\old) && d1\old + 1 == d2) && x + d1\old <= 2147483647) && d1 <= 2147483647)) && d1 <= 73) [2021-10-29 05:39:00,462 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fdd0b0-e596-4924-acb3-a75bd2c1311d/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 05:39:00,462 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:39:00,471 INFO L168 Benchmark]: Toolchain (without parser) took 341176.65 ms. Allocated memory was 117.4 MB in the beginning and 509.6 MB in the end (delta: 392.2 MB). Free memory was 79.8 MB in the beginning and 364.3 MB in the end (delta: -284.5 MB). Peak memory consumption was 107.5 MB. Max. memory is 16.1 GB. [2021-10-29 05:39:00,471 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 117.4 MB. Free memory was 96.1 MB in the beginning and 96.0 MB in the end (delta: 55.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:39:00,477 INFO L168 Benchmark]: CACSL2BoogieTranslator took 286.92 ms. Allocated memory is still 117.4 MB. Free memory was 79.6 MB in the beginning and 94.0 MB in the end (delta: -14.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-29 05:39:00,477 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.73 ms. Allocated memory is still 117.4 MB. Free memory was 94.0 MB in the beginning and 92.9 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:39:00,477 INFO L168 Benchmark]: Boogie Preprocessor took 25.32 ms. Allocated memory is still 117.4 MB. Free memory was 92.9 MB in the beginning and 91.8 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:39:00,477 INFO L168 Benchmark]: RCFGBuilder took 354.63 ms. Allocated memory is still 117.4 MB. Free memory was 91.8 MB in the beginning and 82.8 MB in the end (delta: 9.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-29 05:39:00,478 INFO L168 Benchmark]: TraceAbstraction took 340417.51 ms. Allocated memory was 117.4 MB in the beginning and 509.6 MB in the end (delta: 392.2 MB). Free memory was 82.2 MB in the beginning and 366.4 MB in the end (delta: -284.2 MB). Peak memory consumption was 368.0 MB. Max. memory is 16.1 GB. [2021-10-29 05:39:00,478 INFO L168 Benchmark]: Witness Printer took 42.56 ms. Allocated memory is still 509.6 MB. Free memory was 366.4 MB in the beginning and 364.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:39:00,479 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 117.4 MB. Free memory was 96.1 MB in the beginning and 96.0 MB in the end (delta: 55.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 286.92 ms. Allocated memory is still 117.4 MB. Free memory was 79.6 MB in the beginning and 94.0 MB in the end (delta: -14.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 35.73 ms. Allocated memory is still 117.4 MB. Free memory was 94.0 MB in the beginning and 92.9 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.32 ms. Allocated memory is still 117.4 MB. Free memory was 92.9 MB in the beginning and 91.8 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 354.63 ms. Allocated memory is still 117.4 MB. Free memory was 91.8 MB in the beginning and 82.8 MB in the end (delta: 9.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 340417.51 ms. Allocated memory was 117.4 MB in the beginning and 509.6 MB in the end (delta: 392.2 MB). Free memory was 82.2 MB in the beginning and 366.4 MB in the end (delta: -284.2 MB). Peak memory consumption was 368.0 MB. Max. memory is 16.1 GB. * Witness Printer took 42.56 ms. Allocated memory is still 509.6 MB. Free memory was 366.4 MB in the beginning and 364.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 26]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 26]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 340.3s, OverallIterations: 14, TraceHistogramMax: 74, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 294.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 5.5s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 93 SDtfs, 8361 SDslu, 307 SDs, 0 SdLazy, 5125 SolverSat, 6054 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4097 GetRequests, 2885 SyntacticMatches, 18 SemanticMatches, 1194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115930 ImplicationChecksByTransitivity, 303.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=519occurred in iteration=13, InterpolantAutomatonStates: 710, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 14 MinimizatonAttempts, 36 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 76 NumberOfFragments, 352 HoareAnnotationTreeSize, 1 FomulaSimplifications, 1076 FormulaSimplificationTreeSizeReduction, 1.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 23684 FormulaSimplificationTreeSizeReductionInter, 4.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 29.5s InterpolantComputationTime, 2173 NumberOfCodeBlocks, 1739 NumberOfCodeBlocksAsserted, 49 NumberOfCheckSat, 3213 ConstructedInterpolants, 0 QuantifiedInterpolants, 10461 SizeOfPredicates, 158 NumberOfNonLiveVariables, 1418 ConjunctsInSsa, 190 ConjunctsInUnsatCore, 30 InterpolantComputations, 6 PerfectInterpolantSequences, 37116/74934 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: OVERALL_TIME[ms]: 639, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 10, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 45, TOOLS_POST_TIME[ms]: 224, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME[ms]: 0, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME[ms]: 0, TOOLS_QUANTIFIERELIM_APPLICATIONS: 45, TOOLS_QUANTIFIERELIM_TIME[ms]: 207, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 29, FLUID_QUERY_TIME[ms]: 4, FLUID_QUERIES: 66, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 3, DOMAIN_JOIN_TIME[ms]: 115, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 4, DOMAIN_WIDEN_TIME[ms]: 204, DOMAIN_ISSUBSETEQ_APPLICATIONS: 5, DOMAIN_ISSUBSETEQ_TIME[ms]: 14, DOMAIN_ISBOTTOM_APPLICATIONS: 10, DOMAIN_ISBOTTOM_TIME[ms]: 11, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 408, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 408, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 5, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME[ms]: 0, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 0, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 3, PATH_EXPR_TIME[ms]: 4, REGEX_TO_DAG_TIME[ms]: 3, DAG_COMPRESSION_TIME[ms]: 20, DAG_COMPRESSION_PROCESSED_NODES: 91, DAG_COMPRESSION_RETAINED_NODES: 32, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: (((((((((d1 == 73 && d2 == 74) && x <= 2147483647) && 0 <= x + 2147483648) || ((((((0 <= x + d1\old && 75 <= d1) && d1\old <= 2147483646) && 73 <= d1\old) && d1\old + 1 == d2) && x + d1\old <= 2147483647) && d1 <= 2147483647)) && d1 <= 75) && d1\old <= 73) || ((((((((((d1 == 73 && d2 == 74) && x <= 2147483647) && 0 <= x + 2147483648) || ((((((0 <= x + d1\old && 75 <= d1) && d1\old <= 2147483646) && 73 <= d1\old) && d1\old + 1 == d2) && x + d1\old <= 2147483647) && d1 <= 2147483647)) && d1\old <= (2147483570 + x * -1) / 2) && 79 <= d1) || ((x + d1 <= 2147483570 && ((((d1 == 73 && d2 == 74) && x <= 2147483647) && 0 <= x + 2147483648) || ((((((0 <= x + d1\old && 75 <= d1) && d1\old <= 2147483646) && 73 <= d1\old) && d1\old + 1 == d2) && x + d1\old <= 2147483647) && d1 <= 2147483647))) && 78 <= d2)) && d1\old < 2147483646) && d1 < 2147483646) && d1\old < (x * -1 + -7) / 4 + (4294967290 + x * -1) / 2 + 1)) || ((((77 <= d1 && ((((d1 == 73 && d2 == 74) && x <= 2147483647) && 0 <= x + 2147483648) || ((((((0 <= x + d1\old && 75 <= d1) && d1\old <= 2147483646) && 73 <= d1\old) && d1\old + 1 == d2) && x + d1\old <= 2147483647) && d1 <= 2147483647))) && d1\old <= 75) && d1 <= 77) && x + d2 <= 2147483500)) || ((((((((d1 == 73 && d2 == 74) && x <= 2147483647) && 0 <= x + 2147483648) || ((((((0 <= x + d1\old && 75 <= d1) && d1\old <= 2147483646) && 73 <= d1\old) && d1\old + 1 == d2) && x + d1\old <= 2147483647) && d1 <= 2147483647)) && d1\old <= 75) && x <= 2147483499) && 75 <= d1\old) && d1 <= 75)) || (((((d1 == 73 && d2 == 74) && x <= 2147483647) && 0 <= x + 2147483648) || ((((((0 <= x + d1\old && 75 <= d1) && d1\old <= 2147483646) && 73 <= d1\old) && d1\old + 1 == d2) && x + d1\old <= 2147483647) && d1 <= 2147483647)) && d1 <= 73) RESULT: Ultimate proved your program to be correct! [2021-10-29 05:39:00,516 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62fdd0b0-e596-4924-acb3-a75bd2c1311d/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...