./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/HeizmannHoenickeLeikePodelski-ATVA2013-Fig1.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_8ba3984a-900e-42b5-bc06-4c60c3389368/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba3984a-900e-42b5-bc06-4c60c3389368/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_8ba3984a-900e-42b5-bc06-4c60c3389368/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba3984a-900e-42b5-bc06-4c60c3389368/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/HeizmannHoenickeLeikePodelski-ATVA2013-Fig1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba3984a-900e-42b5-bc06-4c60c3389368/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_8ba3984a-900e-42b5-bc06-4c60c3389368/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 033772d605bbfacd7bdbacf0756e3bc9cfb2f8cbffe91002f61ae4b41e344064 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 04:35:16,821 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 04:35:16,824 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 04:35:16,853 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 04:35:16,854 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 04:35:16,856 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 04:35:16,857 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 04:35:16,860 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 04:35:16,862 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 04:35:16,863 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 04:35:16,864 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 04:35:16,866 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 04:35:16,867 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 04:35:16,868 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 04:35:16,870 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 04:35:16,872 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 04:35:16,873 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 04:35:16,874 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 04:35:16,877 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 04:35:16,879 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 04:35:16,881 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 04:35:16,883 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 04:35:16,884 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 04:35:16,886 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 04:35:16,890 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 04:35:16,890 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 04:35:16,891 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 04:35:16,892 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 04:35:16,892 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 04:35:16,894 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 04:35:16,894 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 04:35:16,895 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 04:35:16,896 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 04:35:16,898 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 04:35:16,899 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 04:35:16,899 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 04:35:16,900 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 04:35:16,901 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 04:35:16,901 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 04:35:16,902 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 04:35:16,903 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 04:35:16,905 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba3984a-900e-42b5-bc06-4c60c3389368/bin/utaipan-SDwSMHVbGG/config/svcomp-Overflow-64bit-Taipan_Default.epf [2021-10-29 04:35:16,930 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 04:35:16,930 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 04:35:16,931 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 04:35:16,931 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 04:35:16,931 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 04:35:16,931 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 04:35:16,932 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 04:35:16,932 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 04:35:16,932 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 04:35:16,932 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 04:35:16,932 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 04:35:16,933 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 04:35:16,933 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 04:35:16,933 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 04:35:16,933 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 04:35:16,934 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 04:35:16,934 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-29 04:35:16,934 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 04:35:16,935 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 04:35:16,935 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 04:35:16,935 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 04:35:16,935 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 04:35:16,935 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-29 04:35:16,935 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 04:35:16,936 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 04:35:16,936 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 04:35:16,936 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 04:35:16,936 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 04:35:16,936 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 04:35:16,937 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 04:35:16,937 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 04:35:16,937 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 04:35:16,937 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 04:35:16,938 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 04:35:16,938 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 04:35:16,938 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 04:35:16,938 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 04:35:16,938 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_8ba3984a-900e-42b5-bc06-4c60c3389368/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba3984a-900e-42b5-bc06-4c60c3389368/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 033772d605bbfacd7bdbacf0756e3bc9cfb2f8cbffe91002f61ae4b41e344064 [2021-10-29 04:35:17,200 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 04:35:17,221 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 04:35:17,224 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 04:35:17,225 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 04:35:17,226 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 04:35:17,227 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba3984a-900e-42b5-bc06-4c60c3389368/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/termination-crafted-lit/HeizmannHoenickeLeikePodelski-ATVA2013-Fig1.c [2021-10-29 04:35:17,292 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba3984a-900e-42b5-bc06-4c60c3389368/bin/utaipan-SDwSMHVbGG/data/136c138b7/a3bf89f5e76b40848a3bdb42a7c292fd/FLAGe3cb64cbd [2021-10-29 04:35:17,793 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 04:35:17,793 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba3984a-900e-42b5-bc06-4c60c3389368/sv-benchmarks/c/termination-crafted-lit/HeizmannHoenickeLeikePodelski-ATVA2013-Fig1.c [2021-10-29 04:35:17,807 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba3984a-900e-42b5-bc06-4c60c3389368/bin/utaipan-SDwSMHVbGG/data/136c138b7/a3bf89f5e76b40848a3bdb42a7c292fd/FLAGe3cb64cbd [2021-10-29 04:35:18,121 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba3984a-900e-42b5-bc06-4c60c3389368/bin/utaipan-SDwSMHVbGG/data/136c138b7/a3bf89f5e76b40848a3bdb42a7c292fd [2021-10-29 04:35:18,123 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 04:35:18,125 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 04:35:18,127 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 04:35:18,127 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 04:35:18,130 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 04:35:18,131 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:35:18" (1/1) ... [2021-10-29 04:35:18,133 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23b1b929 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:35:18, skipping insertion in model container [2021-10-29 04:35:18,133 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:35:18" (1/1) ... [2021-10-29 04:35:18,142 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 04:35:18,155 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 04:35:18,337 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:35:18,341 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 04:35:18,354 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:35:18,363 INFO L208 MainTranslator]: Completed translation [2021-10-29 04:35:18,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:35:18 WrapperNode [2021-10-29 04:35:18,364 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 04:35:18,365 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 04:35:18,365 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 04:35:18,365 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 04:35:18,371 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:35:18" (1/1) ... [2021-10-29 04:35:18,374 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:35:18" (1/1) ... [2021-10-29 04:35:18,391 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 04:35:18,392 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 04:35:18,392 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 04:35:18,393 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 04:35:18,401 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:35:18" (1/1) ... [2021-10-29 04:35:18,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:35:18" (1/1) ... [2021-10-29 04:35:18,402 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:35:18" (1/1) ... [2021-10-29 04:35:18,402 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:35:18" (1/1) ... [2021-10-29 04:35:18,404 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:35:18" (1/1) ... [2021-10-29 04:35:18,406 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:35:18" (1/1) ... [2021-10-29 04:35:18,407 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:35:18" (1/1) ... [2021-10-29 04:35:18,408 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 04:35:18,409 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 04:35:18,409 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 04:35:18,410 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 04:35:18,410 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:35:18" (1/1) ... [2021-10-29 04:35:18,418 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 04:35:18,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba3984a-900e-42b5-bc06-4c60c3389368/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:35:18,443 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba3984a-900e-42b5-bc06-4c60c3389368/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 04:35:18,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba3984a-900e-42b5-bc06-4c60c3389368/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 04:35:18,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 04:35:18,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 04:35:18,640 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 04:35:18,640 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-29 04:35:18,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:35:18 BoogieIcfgContainer [2021-10-29 04:35:18,643 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 04:35:18,646 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 04:35:18,646 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 04:35:18,650 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 04:35:18,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 04:35:18" (1/3) ... [2021-10-29 04:35:18,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30f67228 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:35:18, skipping insertion in model container [2021-10-29 04:35:18,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:35:18" (2/3) ... [2021-10-29 04:35:18,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30f67228 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:35:18, skipping insertion in model container [2021-10-29 04:35:18,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:35:18" (3/3) ... [2021-10-29 04:35:18,654 INFO L111 eAbstractionObserver]: Analyzing ICFG HeizmannHoenickeLeikePodelski-ATVA2013-Fig1.c [2021-10-29 04:35:18,659 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 04:35:18,660 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-10-29 04:35:18,710 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 04:35:18,717 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 04:35:18,717 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-29 04:35:18,731 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:35:18,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-29 04:35:18,736 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:35:18,737 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-29 04:35:18,737 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-29 04:35:18,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:35:18,743 INFO L85 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2021-10-29 04:35:18,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:35:18,754 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470192846] [2021-10-29 04:35:18,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:35:18,755 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:35:18,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:35:18,895 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 04:35:18,896 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:35:18,896 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470192846] [2021-10-29 04:35:18,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470192846] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:35:18,897 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:35:18,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-29 04:35:18,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761339278] [2021-10-29 04:35:18,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 04:35:18,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:35:18,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 04:35:18,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 04:35:18,921 INFO L87 Difference]: Start difference. First operand has 11 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) 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 04:35:18,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:35:18,967 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2021-10-29 04:35:18,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 04:35:18,969 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 04:35:18,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:35:18,977 INFO L225 Difference]: With dead ends: 16 [2021-10-29 04:35:18,978 INFO L226 Difference]: Without dead ends: 13 [2021-10-29 04:35:18,980 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 04:35:18,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-10-29 04:35:19,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2021-10-29 04:35:19,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 8 states have (on average 1.5) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 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 04:35:19,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2021-10-29 04:35:19,015 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 3 [2021-10-29 04:35:19,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:35:19,016 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2021-10-29 04:35:19,016 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 04:35:19,016 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2021-10-29 04:35:19,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-29 04:35:19,017 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:35:19,017 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-29 04:35:19,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-29 04:35:19,018 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-29 04:35:19,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:35:19,019 INFO L85 PathProgramCache]: Analyzing trace with hash 963307, now seen corresponding path program 1 times [2021-10-29 04:35:19,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:35:19,020 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766440177] [2021-10-29 04:35:19,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:35:19,020 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:35:19,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:35:19,053 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 04:35:19,053 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:35:19,054 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766440177] [2021-10-29 04:35:19,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766440177] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:35:19,054 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:35:19,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 04:35:19,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707403401] [2021-10-29 04:35:19,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 04:35:19,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:35:19,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 04:35:19,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 04:35:19,058 INFO L87 Difference]: Start difference. First operand 12 states and 12 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 04:35:19,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:35:19,111 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2021-10-29 04:35:19,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 04:35:19,112 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 04:35:19,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:35:19,112 INFO L225 Difference]: With dead ends: 17 [2021-10-29 04:35:19,112 INFO L226 Difference]: Without dead ends: 15 [2021-10-29 04:35:19,113 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 04:35:19,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-10-29 04:35:19,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2021-10-29 04:35:19,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.4) internal successors, (14), 13 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:35:19,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-10-29 04:35:19,117 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 4 [2021-10-29 04:35:19,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:35:19,118 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-10-29 04:35:19,118 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 04:35:19,118 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-10-29 04:35:19,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-29 04:35:19,119 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:35:19,119 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-29 04:35:19,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-29 04:35:19,119 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-29 04:35:19,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:35:19,120 INFO L85 PathProgramCache]: Analyzing trace with hash 925739501, now seen corresponding path program 1 times [2021-10-29 04:35:19,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:35:19,121 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816314725] [2021-10-29 04:35:19,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:35:19,121 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:35:19,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:35:19,148 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 04:35:19,148 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:35:19,149 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816314725] [2021-10-29 04:35:19,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816314725] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:35:19,149 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:35:19,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-29 04:35:19,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475841142] [2021-10-29 04:35:19,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 04:35:19,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:35:19,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 04:35:19,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 04:35:19,152 INFO L87 Difference]: Start difference. First operand 14 states and 14 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 04:35:19,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:35:19,169 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2021-10-29 04:35:19,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 04:35:19,170 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 04:35:19,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:35:19,170 INFO L225 Difference]: With dead ends: 14 [2021-10-29 04:35:19,171 INFO L226 Difference]: Without dead ends: 13 [2021-10-29 04:35:19,171 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 04:35:19,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-10-29 04:35:19,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-10-29 04:35:19,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 10 states have (on average 1.3) internal successors, (13), 12 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:35:19,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-10-29 04:35:19,175 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 6 [2021-10-29 04:35:19,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:35:19,175 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-10-29 04:35:19,175 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 04:35:19,176 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-10-29 04:35:19,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-29 04:35:19,176 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:35:19,176 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2021-10-29 04:35:19,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-29 04:35:19,177 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-29 04:35:19,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:35:19,178 INFO L85 PathProgramCache]: Analyzing trace with hash 577431471, now seen corresponding path program 1 times [2021-10-29 04:35:19,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:35:19,178 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114928347] [2021-10-29 04:35:19,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:35:19,179 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:35:19,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:35:19,239 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 04:35:19,239 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:35:19,239 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114928347] [2021-10-29 04:35:19,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114928347] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 04:35:19,240 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636548810] [2021-10-29 04:35:19,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:35:19,240 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:35:19,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba3984a-900e-42b5-bc06-4c60c3389368/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:35:19,242 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba3984a-900e-42b5-bc06-4c60c3389368/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 04:35:19,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba3984a-900e-42b5-bc06-4c60c3389368/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-29 04:35:19,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:35:19,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-29 04:35:19,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:35:19,508 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:35:19,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:35:19,614 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 04:35:19,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [636548810] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-29 04:35:19,615 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2021-10-29 04:35:19,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 9 [2021-10-29 04:35:19,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534306136] [2021-10-29 04:35:19,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 04:35:19,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:35:19,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 04:35:19,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2021-10-29 04:35:19,619 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:35:19,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:35:19,694 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2021-10-29 04:35:19,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-29 04:35:19,694 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-29 04:35:19,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:35:19,695 INFO L225 Difference]: With dead ends: 14 [2021-10-29 04:35:19,695 INFO L226 Difference]: Without dead ends: 13 [2021-10-29 04:35:19,696 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=78, Unknown=0, NotChecked=0, Total=132 [2021-10-29 04:35:19,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-10-29 04:35:19,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2021-10-29 04:35:19,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 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 04:35:19,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2021-10-29 04:35:19,700 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2021-10-29 04:35:19,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:35:19,700 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2021-10-29 04:35:19,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:35:19,701 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2021-10-29 04:35:19,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-29 04:35:19,701 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:35:19,701 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2021-10-29 04:35:19,741 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba3984a-900e-42b5-bc06-4c60c3389368/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-29 04:35:19,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba3984a-900e-42b5-bc06-4c60c3389368/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:35:19,903 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-29 04:35:19,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:35:19,904 INFO L85 PathProgramCache]: Analyzing trace with hash 720506461, now seen corresponding path program 1 times [2021-10-29 04:35:19,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:35:19,904 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776791211] [2021-10-29 04:35:19,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:35:19,905 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:35:19,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:35:19,967 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:35:19,968 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:35:19,969 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776791211] [2021-10-29 04:35:19,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776791211] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 04:35:19,970 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115772542] [2021-10-29 04:35:19,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:35:19,970 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:35:19,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba3984a-900e-42b5-bc06-4c60c3389368/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:35:19,978 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba3984a-900e-42b5-bc06-4c60c3389368/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 04:35:19,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba3984a-900e-42b5-bc06-4c60c3389368/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-29 04:35:20,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:35:20,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-29 04:35:20,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:35:20,073 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:35:20,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:35:20,135 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:35:20,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [115772542] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 04:35:20,136 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [666633145] [2021-10-29 04:35:20,159 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2021-10-29 04:35:20,159 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 04:35:20,164 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 04:35:20,170 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 04:35:20,171 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 04:35:20,208 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:35:20,215 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-29 04:35:20,235 INFO L180 QuantifierPusher]: treesize reduction 7, result has 78.8 percent of original size [2021-10-29 04:35:20,239 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-10-29 04:35:20,251 INFO L180 QuantifierPusher]: treesize reduction 8, result has 77.8 percent of original size [2021-10-29 04:35:20,258 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-10-29 04:35:20,264 INFO L180 QuantifierPusher]: treesize reduction 9, result has 80.0 percent of original size [2021-10-29 04:35:20,271 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-10-29 04:35:20,275 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:20,329 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:20,347 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:20,363 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.8 percent of original size [2021-10-29 04:35:20,367 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-10-29 04:35:20,372 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:35:20,378 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 102 [2021-10-29 04:35:20,381 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:20,415 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:20,423 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:20,424 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:20,438 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:20,447 INFO L180 QuantifierPusher]: treesize reduction 5, result has 76.2 percent of original size [2021-10-29 04:35:20,449 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-10-29 04:35:20,459 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:35:20,462 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-10-29 04:35:20,466 INFO L180 QuantifierPusher]: treesize reduction 5, result has 76.2 percent of original size [2021-10-29 04:35:20,467 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-10-29 04:35:20,469 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:20,472 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:20,476 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:20,479 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:20,487 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:20,490 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:20,495 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:20,498 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:20,506 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:20,511 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:20,516 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:20,519 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:20,526 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:20,530 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:20,533 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:20,535 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:20,546 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-29 04:35:20,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [666633145] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:35:20,698 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2021-10-29 04:35:20,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3, 3, 3] total 11 [2021-10-29 04:35:20,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393555127] [2021-10-29 04:35:20,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-29 04:35:20,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:35:20,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-29 04:35:20,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-10-29 04:35:20,707 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 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 04:35:20,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:35:20,848 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2021-10-29 04:35:20,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-29 04:35:20,849 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 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 9 [2021-10-29 04:35:20,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:35:20,850 INFO L225 Difference]: With dead ends: 12 [2021-10-29 04:35:20,850 INFO L226 Difference]: Without dead ends: 11 [2021-10-29 04:35:20,850 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2021-10-29 04:35:20,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-10-29 04:35:20,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-10-29 04:35:20,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:35:20,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2021-10-29 04:35:20,853 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2021-10-29 04:35:20,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:35:20,853 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2021-10-29 04:35:20,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 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 04:35:20,854 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2021-10-29 04:35:20,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-29 04:35:20,854 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:35:20,854 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1] [2021-10-29 04:35:20,891 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba3984a-900e-42b5-bc06-4c60c3389368/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-29 04:35:21,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba3984a-900e-42b5-bc06-4c60c3389368/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:35:21,055 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-29 04:35:21,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:35:21,056 INFO L85 PathProgramCache]: Analyzing trace with hash 860863857, now seen corresponding path program 1 times [2021-10-29 04:35:21,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:35:21,056 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145783214] [2021-10-29 04:35:21,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:35:21,057 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:35:21,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:35:21,085 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 04:35:21,085 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:35:21,085 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145783214] [2021-10-29 04:35:21,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145783214] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 04:35:21,086 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547789329] [2021-10-29 04:35:21,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:35:21,086 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:35:21,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba3984a-900e-42b5-bc06-4c60c3389368/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:35:21,093 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba3984a-900e-42b5-bc06-4c60c3389368/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 04:35:21,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba3984a-900e-42b5-bc06-4c60c3389368/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-29 04:35:21,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:35:21,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-29 04:35:21,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:35:21,191 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 04:35:21,191 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:35:21,241 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 04:35:21,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [547789329] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 04:35:21,242 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [958900550] [2021-10-29 04:35:21,244 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2021-10-29 04:35:21,244 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 04:35:21,245 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 04:35:21,245 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 04:35:21,245 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 04:35:21,251 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:35:21,253 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-29 04:35:21,257 INFO L180 QuantifierPusher]: treesize reduction 7, result has 78.8 percent of original size [2021-10-29 04:35:21,260 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-10-29 04:35:21,262 INFO L180 QuantifierPusher]: treesize reduction 8, result has 77.8 percent of original size [2021-10-29 04:35:21,265 INFO L185 QuantifierPusher]: treesize reduction 8, result has 60.0 percent of original size 12 [2021-10-29 04:35:21,268 INFO L180 QuantifierPusher]: treesize reduction 15, result has 63.4 percent of original size [2021-10-29 04:35:21,270 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-10-29 04:35:21,272 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:21,275 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:21,279 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:21,285 INFO L180 QuantifierPusher]: treesize reduction 5, result has 92.4 percent of original size [2021-10-29 04:35:21,288 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-10-29 04:35:21,291 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:35:21,296 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 88 [2021-10-29 04:35:21,298 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:21,324 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:21,325 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:21,334 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:21,338 INFO L180 QuantifierPusher]: treesize reduction 5, result has 76.2 percent of original size [2021-10-29 04:35:21,340 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-10-29 04:35:21,352 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:35:21,356 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-10-29 04:35:21,360 INFO L180 QuantifierPusher]: treesize reduction 5, result has 76.2 percent of original size [2021-10-29 04:35:21,363 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-10-29 04:35:21,364 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:21,367 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:21,370 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:21,372 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:21,378 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:21,382 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:21,386 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:21,389 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:21,393 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:21,401 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:21,405 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:21,407 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:21,413 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-29 04:35:21,556 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 04:35:21,556 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-29 04:35:21,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2021-10-29 04:35:21,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401604930] [2021-10-29 04:35:21,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-29 04:35:21,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:35:21,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-29 04:35:21,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-10-29 04:35:21,558 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 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 04:35:21,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:35:21,607 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2021-10-29 04:35:21,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-29 04:35:21,608 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 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) Word has length 10 [2021-10-29 04:35:21,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:35:21,610 INFO L225 Difference]: With dead ends: 27 [2021-10-29 04:35:21,610 INFO L226 Difference]: Without dead ends: 26 [2021-10-29 04:35:21,611 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-10-29 04:35:21,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-10-29 04:35:21,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-10-29 04:35:21,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.04) internal successors, (26), 25 states have internal predecessors, (26), 0 states have call successors, (0), 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 04:35:21,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2021-10-29 04:35:21,615 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 10 [2021-10-29 04:35:21,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:35:21,615 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2021-10-29 04:35:21,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 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 04:35:21,616 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2021-10-29 04:35:21,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-29 04:35:21,616 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:35:21,617 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1] [2021-10-29 04:35:21,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba3984a-900e-42b5-bc06-4c60c3389368/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-29 04:35:21,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba3984a-900e-42b5-bc06-4c60c3389368/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:35:21,841 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-29 04:35:21,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:35:21,842 INFO L85 PathProgramCache]: Analyzing trace with hash -333652957, now seen corresponding path program 2 times [2021-10-29 04:35:21,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:35:21,842 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194619363] [2021-10-29 04:35:21,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:35:21,842 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:35:21,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:35:21,905 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:35:21,905 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:35:21,905 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194619363] [2021-10-29 04:35:21,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194619363] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 04:35:21,906 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658862921] [2021-10-29 04:35:21,906 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-29 04:35:21,906 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:35:21,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba3984a-900e-42b5-bc06-4c60c3389368/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:35:21,907 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba3984a-900e-42b5-bc06-4c60c3389368/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 04:35:21,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba3984a-900e-42b5-bc06-4c60c3389368/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-29 04:35:21,967 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-10-29 04:35:21,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 04:35:21,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-29 04:35:21,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:35:22,057 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:35:22,057 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:35:22,182 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:35:22,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1658862921] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 04:35:22,182 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2145213959] [2021-10-29 04:35:22,187 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2021-10-29 04:35:22,187 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 04:35:22,188 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 04:35:22,189 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 04:35:22,189 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 04:35:22,202 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:35:22,208 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-29 04:35:22,213 INFO L180 QuantifierPusher]: treesize reduction 7, result has 78.8 percent of original size [2021-10-29 04:35:22,218 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-10-29 04:35:22,221 INFO L180 QuantifierPusher]: treesize reduction 8, result has 77.8 percent of original size [2021-10-29 04:35:22,227 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-10-29 04:35:22,229 INFO L180 QuantifierPusher]: treesize reduction 9, result has 80.0 percent of original size [2021-10-29 04:35:22,232 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-10-29 04:35:22,238 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:22,241 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:22,248 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:22,255 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.8 percent of original size [2021-10-29 04:35:22,261 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-10-29 04:35:22,268 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:35:22,276 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 102 [2021-10-29 04:35:22,279 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:22,298 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:22,299 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:22,301 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:22,310 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:22,312 INFO L180 QuantifierPusher]: treesize reduction 5, result has 76.2 percent of original size [2021-10-29 04:35:22,317 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-10-29 04:35:22,319 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:35:22,322 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-10-29 04:35:22,326 INFO L180 QuantifierPusher]: treesize reduction 5, result has 76.2 percent of original size [2021-10-29 04:35:22,330 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-10-29 04:35:22,331 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:22,333 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:22,336 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:22,339 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:22,343 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:22,348 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:22,352 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:22,354 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:22,358 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:22,360 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:22,364 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:22,366 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:22,374 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-29 04:35:22,562 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 04:35:22,562 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-29 04:35:22,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2021-10-29 04:35:22,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26917735] [2021-10-29 04:35:22,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-29 04:35:22,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:35:22,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-29 04:35:22,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-10-29 04:35:22,564 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:35:22,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:35:22,635 INFO L93 Difference]: Finished difference Result 57 states and 62 transitions. [2021-10-29 04:35:22,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-29 04:35:22,636 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-29 04:35:22,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:35:22,637 INFO L225 Difference]: With dead ends: 57 [2021-10-29 04:35:22,637 INFO L226 Difference]: Without dead ends: 56 [2021-10-29 04:35:22,637 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 58 SyntacticMatches, 5 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-10-29 04:35:22,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-10-29 04:35:22,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-10-29 04:35:22,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.018181818181818) internal successors, (56), 55 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 04:35:22,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2021-10-29 04:35:22,645 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 25 [2021-10-29 04:35:22,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:35:22,645 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2021-10-29 04:35:22,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:35:22,646 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2021-10-29 04:35:22,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-10-29 04:35:22,647 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:35:22,648 INFO L513 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 1, 1] [2021-10-29 04:35:22,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba3984a-900e-42b5-bc06-4c60c3389368/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-29 04:35:22,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba3984a-900e-42b5-bc06-4c60c3389368/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-10-29 04:35:22,858 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-29 04:35:22,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:35:22,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1266934173, now seen corresponding path program 3 times [2021-10-29 04:35:22,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:35:22,859 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778693703] [2021-10-29 04:35:22,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:35:22,859 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:35:22,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:35:23,049 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:35:23,049 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:35:23,049 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778693703] [2021-10-29 04:35:23,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778693703] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 04:35:23,050 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772335741] [2021-10-29 04:35:23,050 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-29 04:35:23,050 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:35:23,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba3984a-900e-42b5-bc06-4c60c3389368/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:35:23,051 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba3984a-900e-42b5-bc06-4c60c3389368/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 04:35:23,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba3984a-900e-42b5-bc06-4c60c3389368/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-29 04:35:23,138 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-29 04:35:23,138 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 04:35:23,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-29 04:35:23,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:35:23,314 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:35:23,314 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:35:23,632 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:35:23,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1772335741] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 04:35:23,636 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [265973496] [2021-10-29 04:35:23,639 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2021-10-29 04:35:23,639 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 04:35:23,640 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 04:35:23,640 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 04:35:23,641 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 04:35:23,645 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:35:23,648 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-29 04:35:23,651 INFO L180 QuantifierPusher]: treesize reduction 7, result has 78.8 percent of original size [2021-10-29 04:35:23,654 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-10-29 04:35:23,656 INFO L180 QuantifierPusher]: treesize reduction 8, result has 77.8 percent of original size [2021-10-29 04:35:23,660 INFO L185 QuantifierPusher]: treesize reduction 8, result has 60.0 percent of original size 12 [2021-10-29 04:35:23,663 INFO L180 QuantifierPusher]: treesize reduction 15, result has 63.4 percent of original size [2021-10-29 04:35:23,664 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-10-29 04:35:23,666 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:23,669 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:23,673 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:23,677 INFO L180 QuantifierPusher]: treesize reduction 5, result has 92.4 percent of original size [2021-10-29 04:35:23,680 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-10-29 04:35:23,684 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:35:23,692 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 88 [2021-10-29 04:35:23,697 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:23,702 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:23,703 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:23,707 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:23,709 INFO L180 QuantifierPusher]: treesize reduction 5, result has 76.2 percent of original size [2021-10-29 04:35:23,711 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-10-29 04:35:23,714 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:35:23,718 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-10-29 04:35:23,722 INFO L180 QuantifierPusher]: treesize reduction 5, result has 76.2 percent of original size [2021-10-29 04:35:23,723 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-10-29 04:35:23,724 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:23,726 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:23,728 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:23,729 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:23,732 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:23,734 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:23,736 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:23,738 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:23,741 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:23,743 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:23,745 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:23,747 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:23,750 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-29 04:35:24,072 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 04:35:24,072 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-29 04:35:24,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2021-10-29 04:35:24,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155720471] [2021-10-29 04:35:24,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-29 04:35:24,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:35:24,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-29 04:35:24,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=290, Invalid=522, Unknown=0, NotChecked=0, Total=812 [2021-10-29 04:35:24,075 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand has 24 states, 23 states have (on average 4.782608695652174) internal successors, (110), 23 states have internal predecessors, (110), 0 states have call successors, (0), 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 04:35:24,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:35:24,231 INFO L93 Difference]: Finished difference Result 117 states and 128 transitions. [2021-10-29 04:35:24,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-29 04:35:24,232 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 4.782608695652174) internal successors, (110), 23 states have internal predecessors, (110), 0 states have call successors, (0), 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 55 [2021-10-29 04:35:24,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:35:24,234 INFO L225 Difference]: With dead ends: 117 [2021-10-29 04:35:24,234 INFO L226 Difference]: Without dead ends: 116 [2021-10-29 04:35:24,234 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 136 SyntacticMatches, 11 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 518 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=290, Invalid=522, Unknown=0, NotChecked=0, Total=812 [2021-10-29 04:35:24,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-10-29 04:35:24,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2021-10-29 04:35:24,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 1.008695652173913) internal successors, (116), 115 states have internal predecessors, (116), 0 states have call successors, (0), 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 04:35:24,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 116 transitions. [2021-10-29 04:35:24,247 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 116 transitions. Word has length 55 [2021-10-29 04:35:24,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:35:24,248 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 116 transitions. [2021-10-29 04:35:24,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 4.782608695652174) internal successors, (110), 23 states have internal predecessors, (110), 0 states have call successors, (0), 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 04:35:24,249 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 116 transitions. [2021-10-29 04:35:24,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-10-29 04:35:24,253 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:35:24,253 INFO L513 BasicCegarLoop]: trace histogram [23, 23, 23, 22, 22, 1, 1] [2021-10-29 04:35:24,292 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba3984a-900e-42b5-bc06-4c60c3389368/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-10-29 04:35:24,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba3984a-900e-42b5-bc06-4c60c3389368/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:35:24,476 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-29 04:35:24,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:35:24,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1393971939, now seen corresponding path program 4 times [2021-10-29 04:35:24,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:35:24,477 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354071930] [2021-10-29 04:35:24,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:35:24,477 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:35:24,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:35:24,951 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:35:24,951 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:35:24,952 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354071930] [2021-10-29 04:35:24,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354071930] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 04:35:24,952 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549162562] [2021-10-29 04:35:24,952 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-29 04:35:24,952 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:35:24,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba3984a-900e-42b5-bc06-4c60c3389368/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:35:24,954 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba3984a-900e-42b5-bc06-4c60c3389368/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 04:35:24,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba3984a-900e-42b5-bc06-4c60c3389368/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-29 04:35:25,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:35:25,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-29 04:35:25,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:35:25,427 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:35:25,428 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:35:26,428 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:35:26,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1549162562] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 04:35:26,429 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1872591227] [2021-10-29 04:35:26,432 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2021-10-29 04:35:26,432 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 04:35:26,433 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 04:35:26,433 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 04:35:26,433 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 04:35:26,439 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:35:26,441 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-29 04:35:26,445 INFO L180 QuantifierPusher]: treesize reduction 7, result has 78.8 percent of original size [2021-10-29 04:35:26,446 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-10-29 04:35:26,449 INFO L180 QuantifierPusher]: treesize reduction 8, result has 77.8 percent of original size [2021-10-29 04:35:26,451 INFO L185 QuantifierPusher]: treesize reduction 8, result has 60.0 percent of original size 12 [2021-10-29 04:35:26,453 INFO L180 QuantifierPusher]: treesize reduction 15, result has 63.4 percent of original size [2021-10-29 04:35:26,454 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-10-29 04:35:26,456 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:26,458 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:26,461 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:26,465 INFO L180 QuantifierPusher]: treesize reduction 5, result has 92.4 percent of original size [2021-10-29 04:35:26,467 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-10-29 04:35:26,469 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:35:26,472 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 88 [2021-10-29 04:35:26,475 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:26,481 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:26,484 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:26,488 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:26,490 INFO L180 QuantifierPusher]: treesize reduction 5, result has 76.2 percent of original size [2021-10-29 04:35:26,496 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-10-29 04:35:26,499 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:35:26,501 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-10-29 04:35:26,504 INFO L180 QuantifierPusher]: treesize reduction 5, result has 76.2 percent of original size [2021-10-29 04:35:26,505 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-10-29 04:35:26,506 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:26,508 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:26,510 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:26,511 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:26,514 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:26,516 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:26,518 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:26,520 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:26,523 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:26,525 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:26,527 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:26,529 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:26,533 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-29 04:35:27,334 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 04:35:27,334 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-29 04:35:27,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 46 [2021-10-29 04:35:27,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374364054] [2021-10-29 04:35:27,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-10-29 04:35:27,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:35:27,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-10-29 04:35:27,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1142, Invalid=1614, Unknown=0, NotChecked=0, Total=2756 [2021-10-29 04:35:27,339 INFO L87 Difference]: Start difference. First operand 116 states and 116 transitions. Second operand has 48 states, 47 states have (on average 4.8936170212765955) internal successors, (230), 47 states have internal predecessors, (230), 0 states have call successors, (0), 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 04:35:27,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:35:27,633 INFO L93 Difference]: Finished difference Result 237 states and 260 transitions. [2021-10-29 04:35:27,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-10-29 04:35:27,633 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 4.8936170212765955) internal successors, (230), 47 states have internal predecessors, (230), 0 states have call successors, (0), 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 115 [2021-10-29 04:35:27,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:35:27,636 INFO L225 Difference]: With dead ends: 237 [2021-10-29 04:35:27,636 INFO L226 Difference]: Without dead ends: 236 [2021-10-29 04:35:27,638 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 292 SyntacticMatches, 23 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1922 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1142, Invalid=1614, Unknown=0, NotChecked=0, Total=2756 [2021-10-29 04:35:27,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2021-10-29 04:35:27,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 236. [2021-10-29 04:35:27,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 235 states have (on average 1.004255319148936) internal successors, (236), 235 states have internal predecessors, (236), 0 states have call successors, (0), 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 04:35:27,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 236 transitions. [2021-10-29 04:35:27,659 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 236 transitions. Word has length 115 [2021-10-29 04:35:27,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:35:27,660 INFO L470 AbstractCegarLoop]: Abstraction has 236 states and 236 transitions. [2021-10-29 04:35:27,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 4.8936170212765955) internal successors, (230), 47 states have internal predecessors, (230), 0 states have call successors, (0), 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 04:35:27,660 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 236 transitions. [2021-10-29 04:35:27,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-10-29 04:35:27,664 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:35:27,665 INFO L513 BasicCegarLoop]: trace histogram [47, 47, 47, 46, 46, 1, 1] [2021-10-29 04:35:27,696 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba3984a-900e-42b5-bc06-4c60c3389368/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-10-29 04:35:27,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba3984a-900e-42b5-bc06-4c60c3389368/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:35:27,881 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-29 04:35:27,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:35:27,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1923709923, now seen corresponding path program 5 times [2021-10-29 04:35:27,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:35:27,882 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207348710] [2021-10-29 04:35:27,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:35:27,882 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:35:28,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:35:29,231 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:35:29,231 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:35:29,232 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207348710] [2021-10-29 04:35:29,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207348710] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 04:35:29,232 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847953721] [2021-10-29 04:35:29,232 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-29 04:35:29,232 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:35:29,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba3984a-900e-42b5-bc06-4c60c3389368/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:35:29,233 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba3984a-900e-42b5-bc06-4c60c3389368/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 04:35:29,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba3984a-900e-42b5-bc06-4c60c3389368/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-29 04:35:29,425 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-10-29 04:35:29,426 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 04:35:29,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-29 04:35:29,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 04:35:30,113 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 737 proven. 21 refuted. 0 times theorem prover too weak. 4601 trivial. 0 not checked. [2021-10-29 04:35:30,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 04:35:30,937 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 737 proven. 21 refuted. 0 times theorem prover too weak. 4601 trivial. 0 not checked. [2021-10-29 04:35:30,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [847953721] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 04:35:30,937 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [27811271] [2021-10-29 04:35:30,940 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2021-10-29 04:35:30,940 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 04:35:30,940 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 04:35:30,940 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 04:35:30,941 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 04:35:30,944 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:35:30,945 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-29 04:35:30,949 INFO L180 QuantifierPusher]: treesize reduction 7, result has 78.8 percent of original size [2021-10-29 04:35:30,950 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-10-29 04:35:30,952 INFO L180 QuantifierPusher]: treesize reduction 8, result has 77.8 percent of original size [2021-10-29 04:35:30,954 INFO L185 QuantifierPusher]: treesize reduction 8, result has 60.0 percent of original size 12 [2021-10-29 04:35:30,956 INFO L180 QuantifierPusher]: treesize reduction 15, result has 63.4 percent of original size [2021-10-29 04:35:30,957 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-10-29 04:35:30,959 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:30,961 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:30,963 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:30,967 INFO L180 QuantifierPusher]: treesize reduction 5, result has 92.4 percent of original size [2021-10-29 04:35:30,969 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-10-29 04:35:30,971 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:35:30,973 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 88 [2021-10-29 04:35:30,975 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:30,980 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:30,981 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:30,983 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:30,985 INFO L180 QuantifierPusher]: treesize reduction 5, result has 76.2 percent of original size [2021-10-29 04:35:30,986 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-10-29 04:35:30,987 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 04:35:30,989 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-10-29 04:35:30,992 INFO L180 QuantifierPusher]: treesize reduction 5, result has 76.2 percent of original size [2021-10-29 04:35:30,993 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-10-29 04:35:30,994 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:30,995 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:30,997 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:30,998 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:31,001 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:31,003 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:31,005 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:31,006 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:31,009 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:31,011 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:31,013 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:31,014 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:31,018 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-29 04:35:33,648 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 04:35:33,648 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-29 04:35:33,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 8, 8] total 62 [2021-10-29 04:35:33,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898967256] [2021-10-29 04:35:33,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2021-10-29 04:35:33,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:35:33,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2021-10-29 04:35:33,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1556, Invalid=3000, Unknown=0, NotChecked=0, Total=4556 [2021-10-29 04:35:33,654 INFO L87 Difference]: Start difference. First operand 236 states and 236 transitions. Second operand has 63 states, 62 states have (on average 4.467741935483871) internal successors, (277), 63 states have internal predecessors, (277), 0 states have call successors, (0), 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 04:35:39,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:35:39,938 INFO L93 Difference]: Finished difference Result 243 states and 244 transitions. [2021-10-29 04:35:39,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2021-10-29 04:35:39,939 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 62 states have (on average 4.467741935483871) internal successors, (277), 63 states have internal predecessors, (277), 0 states have call successors, (0), 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 235 [2021-10-29 04:35:39,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:35:39,940 INFO L225 Difference]: With dead ends: 243 [2021-10-29 04:35:39,940 INFO L226 Difference]: Without dead ends: 0 [2021-10-29 04:35:39,961 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 894 GetRequests, 637 SyntacticMatches, 47 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16506 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=12307, Invalid=32425, Unknown=0, NotChecked=0, Total=44732 [2021-10-29 04:35:39,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-29 04:35:39,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-29 04:35:39,962 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 04:35:39,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-29 04:35:39,962 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 235 [2021-10-29 04:35:39,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:35:39,963 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-29 04:35:39,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 62 states have (on average 4.467741935483871) internal successors, (277), 63 states have internal predecessors, (277), 0 states have call successors, (0), 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 04:35:39,963 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-29 04:35:39,963 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-29 04:35:39,966 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-29 04:35:39,967 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-29 04:35:39,967 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-29 04:35:39,967 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-29 04:35:40,000 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba3984a-900e-42b5-bc06-4c60c3389368/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-29 04:35:40,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba3984a-900e-42b5-bc06-4c60c3389368/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:35:40,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-29 04:35:40,190 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:35:40,587 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-10-29 04:35:40,587 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-29 04:35:40,587 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2021-10-29 04:35:40,587 INFO L857 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2021-10-29 04:35:40,587 INFO L857 garLoopResultBuilder]: For program point L19-1(line 19) no Hoare annotation was computed. [2021-10-29 04:35:40,587 INFO L853 garLoopResultBuilder]: At program point L17-2(lines 17 20) the Hoare annotation is: (let ((.cse0 (<= ULTIMATE.start_main_~y~0 23)) (.cse2 (<= 0 (+ ULTIMATE.start_main_~x~0 2147483648)))) (let ((.cse3 (or (and (<= 24 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~y~0 2147483647)) (and .cse0 .cse2))) (.cse1 (<= 23 ULTIMATE.start_main_~y~0))) (or (and .cse0 (<= ULTIMATE.start_main_~x~0 2147483647) .cse1 .cse2) (and (<= ULTIMATE.start_main_~y~0 24) (<= ULTIMATE.start_main_~x~0 2147483624) .cse3 .cse1) (and (<= ULTIMATE.start_main_~y~0 (+ (div (+ (* ULTIMATE.start_main_~x~0 (- 1)) 2147483648) 2) 1)) (<= ULTIMATE.start_main_~y~0 2147483646) .cse3 .cse1)))) [2021-10-29 04:35:40,587 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-10-29 04:35:40,588 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2021-10-29 04:35:40,588 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-29 04:35:40,588 INFO L857 garLoopResultBuilder]: For program point L18(line 18) no Hoare annotation was computed. [2021-10-29 04:35:40,588 INFO L857 garLoopResultBuilder]: For program point L18-1(line 18) no Hoare annotation was computed. [2021-10-29 04:35:40,591 INFO L731 BasicCegarLoop]: Path program histogram: [5, 1, 1, 1, 1, 1] [2021-10-29 04:35:40,592 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 04:35:40,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 04:35:40 BoogieIcfgContainer [2021-10-29 04:35:40,623 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 04:35:40,623 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 04:35:40,623 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 04:35:40,624 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 04:35:40,624 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:35:18" (3/4) ... [2021-10-29 04:35:40,627 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-29 04:35:40,637 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-10-29 04:35:40,637 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-10-29 04:35:40,637 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-29 04:35:40,669 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba3984a-900e-42b5-bc06-4c60c3389368/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 04:35:40,670 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 04:35:40,670 INFO L168 Benchmark]: Toolchain (without parser) took 22545.34 ms. Allocated memory was 107.0 MB in the beginning and 161.5 MB in the end (delta: 54.5 MB). Free memory was 67.0 MB in the beginning and 94.1 MB in the end (delta: -27.1 MB). Peak memory consumption was 26.9 MB. Max. memory is 16.1 GB. [2021-10-29 04:35:40,672 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 107.0 MB. Free memory is still 83.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 04:35:40,673 INFO L168 Benchmark]: CACSL2BoogieTranslator took 237.16 ms. Allocated memory is still 107.0 MB. Free memory was 66.8 MB in the beginning and 83.3 MB in the end (delta: -16.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-29 04:35:40,673 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.82 ms. Allocated memory is still 107.0 MB. Free memory was 83.3 MB in the beginning and 82.0 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 04:35:40,675 INFO L168 Benchmark]: Boogie Preprocessor took 16.22 ms. Allocated memory is still 107.0 MB. Free memory was 82.0 MB in the beginning and 81.2 MB in the end (delta: 741.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 04:35:40,676 INFO L168 Benchmark]: RCFGBuilder took 234.51 ms. Allocated memory is still 107.0 MB. Free memory was 81.2 MB in the beginning and 72.8 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-29 04:35:40,676 INFO L168 Benchmark]: TraceAbstraction took 21977.21 ms. Allocated memory was 107.0 MB in the beginning and 161.5 MB in the end (delta: 54.5 MB). Free memory was 72.4 MB in the beginning and 96.2 MB in the end (delta: -23.8 MB). Peak memory consumption was 90.3 MB. Max. memory is 16.1 GB. [2021-10-29 04:35:40,677 INFO L168 Benchmark]: Witness Printer took 46.42 ms. Allocated memory is still 161.5 MB. Free memory was 96.2 MB in the beginning and 94.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 04:35:40,682 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 107.0 MB. Free memory is still 83.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 237.16 ms. Allocated memory is still 107.0 MB. Free memory was 66.8 MB in the beginning and 83.3 MB in the end (delta: -16.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 26.82 ms. Allocated memory is still 107.0 MB. Free memory was 83.3 MB in the beginning and 82.0 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 16.22 ms. Allocated memory is still 107.0 MB. Free memory was 82.0 MB in the beginning and 81.2 MB in the end (delta: 741.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 234.51 ms. Allocated memory is still 107.0 MB. Free memory was 81.2 MB in the beginning and 72.8 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 21977.21 ms. Allocated memory was 107.0 MB in the beginning and 161.5 MB in the end (delta: 54.5 MB). Free memory was 72.4 MB in the beginning and 96.2 MB in the end (delta: -23.8 MB). Peak memory consumption was 90.3 MB. Max. memory is 16.1 GB. * Witness Printer took 46.42 ms. Allocated memory is still 161.5 MB. Free memory was 96.2 MB in the beginning and 94.1 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: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 19]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 19]: 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, 11 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 21.8s, OverallIterations: 10, TraceHistogramMax: 47, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 7.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 28 SDtfs, 463 SDslu, 83 SDs, 0 SdLazy, 730 SolverSat, 317 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1596 GetRequests, 1164 SyntacticMatches, 91 SemanticMatches, 341 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19193 ImplicationChecksByTransitivity, 12.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=236occurred in iteration=9, InterpolantAutomatonStates: 260, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 3 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 49 NumberOfFragments, 78 HoareAnnotationTreeSize, 1 FomulaSimplifications, 198 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 1 FomulaSimplificationsInter, 2000 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 6.0s InterpolantComputationTime, 927 NumberOfCodeBlocks, 717 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 1360 ConstructedInterpolants, 0 QuantifiedInterpolants, 3370 SizeOfPredicates, 3 NumberOfNonLiveVariables, 478 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 24 InterpolantComputations, 4 PerfectInterpolantSequences, 10678/20766 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]: 388, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 9, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 24, TOOLS_POST_TIME[ms]: 104, 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: 24, TOOLS_QUANTIFIERELIM_TIME[ms]: 96, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 18, FLUID_QUERY_TIME[ms]: 3, FLUID_QUERIES: 39, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 4, DOMAIN_JOIN_TIME[ms]: 75, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 2, DOMAIN_WIDEN_TIME[ms]: 150, DOMAIN_ISSUBSETEQ_APPLICATIONS: 3, DOMAIN_ISSUBSETEQ_TIME[ms]: 4, DOMAIN_ISBOTTOM_APPLICATIONS: 9, DOMAIN_ISBOTTOM_TIME[ms]: 8, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 224, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 224, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 3, 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]: 2, PATH_EXPR_TIME[ms]: 3, REGEX_TO_DAG_TIME[ms]: 3, DAG_COMPRESSION_TIME[ms]: 9, DAG_COMPRESSION_PROCESSED_NODES: 78, DAG_COMPRESSION_RETAINED_NODES: 27, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((((y <= 23 && x <= 2147483647) && 23 <= y) && 0 <= x + 2147483648) || (((y <= 24 && x <= 2147483624) && ((24 <= y && y <= 2147483647) || (y <= 23 && 0 <= x + 2147483648))) && 23 <= y)) || (((y <= (x * -1 + 2147483648) / 2 + 1 && y <= 2147483646) && ((24 <= y && y <= 2147483647) || (y <= 23 && 0 <= x + 2147483648))) && 23 <= y) RESULT: Ultimate proved your program to be correct! [2021-10-29 04:35:40,751 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba3984a-900e-42b5-bc06-4c60c3389368/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...