./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 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3574ff67-450e-4268-b6f6-233776a5f0ed/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3574ff67-450e-4268-b6f6-233776a5f0ed/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3574ff67-450e-4268-b6f6-233776a5f0ed/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3574ff67-450e-4268-b6f6-233776a5f0ed/bin/utaipan-q2qaUkNPG8/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_3574ff67-450e-4268-b6f6-233776a5f0ed/bin/utaipan-q2qaUkNPG8/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3574ff67-450e-4268-b6f6-233776a5f0ed/bin/utaipan-q2qaUkNPG8 --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 0564e568992a96ba006237c1af458e049de52506 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:07:37,798 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:07:37,802 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:07:37,855 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:07:37,856 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:07:37,857 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:07:37,860 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:07:37,863 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:07:37,866 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:07:37,868 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:07:37,869 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:07:37,872 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:07:37,872 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:07:37,874 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:07:37,876 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:07:37,879 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:07:37,881 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:07:37,882 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:07:37,886 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:07:37,889 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:07:37,892 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:07:37,894 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:07:37,896 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:07:37,898 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:07:37,903 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:07:37,904 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:07:37,904 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:07:37,906 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:07:37,907 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:07:37,909 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:07:37,909 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:07:37,911 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:07:37,912 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:07:37,914 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:07:37,916 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:07:37,916 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:07:37,918 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:07:37,918 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:07:37,918 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:07:37,920 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:07:37,921 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:07:37,922 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3574ff67-450e-4268-b6f6-233776a5f0ed/bin/utaipan-q2qaUkNPG8/config/svcomp-Overflow-64bit-Taipan_Default.epf [2021-10-13 07:07:37,970 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:07:37,971 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:07:37,973 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:07:37,973 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:07:37,973 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:07:37,974 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:07:37,974 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:07:37,974 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:07:37,975 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:07:37,975 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:07:37,976 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:07:37,977 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:07:37,977 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:07:37,978 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:07:37,978 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:07:37,979 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:07:37,979 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 07:07:37,979 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:07:37,980 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:07:37,980 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:07:37,980 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:07:37,981 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:07:37,981 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-13 07:07:37,981 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:07:37,982 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:07:37,982 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:07:37,982 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:07:37,983 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:07:37,983 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:07:37,983 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:07:37,984 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:07:37,984 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:07:37,984 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:07:37,985 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:07:37,985 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:07:37,985 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:07:37,995 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:07:37,995 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_3574ff67-450e-4268-b6f6-233776a5f0ed/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3574ff67-450e-4268-b6f6-233776a5f0ed/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0564e568992a96ba006237c1af458e049de52506 [2021-10-13 07:07:38,391 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:07:38,418 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:07:38,421 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:07:38,423 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:07:38,424 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:07:38,425 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3574ff67-450e-4268-b6f6-233776a5f0ed/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/termination-crafted-lit/HeizmannHoenickeLeikePodelski-ATVA2013-Fig1.c [2021-10-13 07:07:38,504 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3574ff67-450e-4268-b6f6-233776a5f0ed/bin/utaipan-q2qaUkNPG8/data/880df4556/342e6682862f493bba88244cede06852/FLAG4dee991fc [2021-10-13 07:07:39,044 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:07:39,045 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3574ff67-450e-4268-b6f6-233776a5f0ed/sv-benchmarks/c/termination-crafted-lit/HeizmannHoenickeLeikePodelski-ATVA2013-Fig1.c [2021-10-13 07:07:39,055 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3574ff67-450e-4268-b6f6-233776a5f0ed/bin/utaipan-q2qaUkNPG8/data/880df4556/342e6682862f493bba88244cede06852/FLAG4dee991fc [2021-10-13 07:07:39,409 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3574ff67-450e-4268-b6f6-233776a5f0ed/bin/utaipan-q2qaUkNPG8/data/880df4556/342e6682862f493bba88244cede06852 [2021-10-13 07:07:39,412 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:07:39,414 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:07:39,429 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:07:39,429 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:07:39,432 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:07:39,433 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:07:39" (1/1) ... [2021-10-13 07:07:39,435 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17fda87b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:07:39, skipping insertion in model container [2021-10-13 07:07:39,435 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:07:39" (1/1) ... [2021-10-13 07:07:39,445 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:07:39,460 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:07:39,625 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:07:39,631 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:07:39,647 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:07:39,663 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:07:39,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:07:39 WrapperNode [2021-10-13 07:07:39,664 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:07:39,665 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:07:39,665 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:07:39,666 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:07:39,676 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:07:39" (1/1) ... [2021-10-13 07:07:39,681 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:07:39" (1/1) ... [2021-10-13 07:07:39,702 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:07:39,703 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:07:39,703 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:07:39,703 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:07:39,714 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:07:39" (1/1) ... [2021-10-13 07:07:39,714 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:07:39" (1/1) ... [2021-10-13 07:07:39,715 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:07:39" (1/1) ... [2021-10-13 07:07:39,715 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:07:39" (1/1) ... [2021-10-13 07:07:39,718 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:07:39" (1/1) ... [2021-10-13 07:07:39,722 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:07:39" (1/1) ... [2021-10-13 07:07:39,723 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:07:39" (1/1) ... [2021-10-13 07:07:39,725 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:07:39,726 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:07:39,726 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:07:39,727 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:07:39,728 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:07:39" (1/1) ... [2021-10-13 07:07:39,738 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:07:39,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3574ff67-450e-4268-b6f6-233776a5f0ed/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:07:39,770 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3574ff67-450e-4268-b6f6-233776a5f0ed/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:07:39,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3574ff67-450e-4268-b6f6-233776a5f0ed/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:07:39,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:07:39,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:07:40,111 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:07:40,111 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-13 07:07:40,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:07:40 BoogieIcfgContainer [2021-10-13 07:07:40,115 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:07:40,117 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:07:40,118 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:07:40,122 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:07:40,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:07:39" (1/3) ... [2021-10-13 07:07:40,124 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e911fff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:07:40, skipping insertion in model container [2021-10-13 07:07:40,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:07:39" (2/3) ... [2021-10-13 07:07:40,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e911fff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:07:40, skipping insertion in model container [2021-10-13 07:07:40,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:07:40" (3/3) ... [2021-10-13 07:07:40,130 INFO L111 eAbstractionObserver]: Analyzing ICFG HeizmannHoenickeLeikePodelski-ATVA2013-Fig1.c [2021-10-13 07:07:40,145 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:07:40,146 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-10-13 07:07:40,255 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:07:40,269 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, mConcurrency=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 [2021-10-13 07:07:40,270 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-13 07:07:40,296 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) [2021-10-13 07:07:40,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-13 07:07:40,302 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:07:40,303 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-13 07:07:40,304 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)] === [2021-10-13 07:07:40,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:07:40,311 INFO L82 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2021-10-13 07:07:40,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:07:40,323 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107381316] [2021-10-13 07:07:40,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:07:40,324 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:07:40,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:07:40,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:07:40,497 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:07:40,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107381316] [2021-10-13 07:07:40,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107381316] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:07:40,499 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:07:40,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-13 07:07:40,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598161300] [2021-10-13 07:07:40,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:07:40,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:07:40,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:07:40,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:07:40,528 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) [2021-10-13 07:07:40,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:07:40,583 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2021-10-13 07:07:40,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:07:40,586 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 [2021-10-13 07:07:40,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:07:40,597 INFO L225 Difference]: With dead ends: 16 [2021-10-13 07:07:40,597 INFO L226 Difference]: Without dead ends: 13 [2021-10-13 07:07:40,600 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:07:40,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-10-13 07:07:40,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2021-10-13 07:07:40,638 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) [2021-10-13 07:07:40,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2021-10-13 07:07:40,640 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 3 [2021-10-13 07:07:40,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:07:40,641 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2021-10-13 07:07:40,641 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) [2021-10-13 07:07:40,642 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2021-10-13 07:07:40,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-13 07:07:40,643 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:07:40,643 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-13 07:07:40,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 07:07:40,644 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)] === [2021-10-13 07:07:40,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:07:40,645 INFO L82 PathProgramCache]: Analyzing trace with hash 963307, now seen corresponding path program 1 times [2021-10-13 07:07:40,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:07:40,646 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513126352] [2021-10-13 07:07:40,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:07:40,647 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:07:40,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:07:40,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:07:40,687 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:07:40,687 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513126352] [2021-10-13 07:07:40,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513126352] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:07:40,688 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:07:40,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:07:40,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237203772] [2021-10-13 07:07:40,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:07:40,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:07:40,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:07:40,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:07:40,693 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) [2021-10-13 07:07:40,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:07:40,752 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2021-10-13 07:07:40,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:07:40,753 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 [2021-10-13 07:07:40,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:07:40,754 INFO L225 Difference]: With dead ends: 17 [2021-10-13 07:07:40,755 INFO L226 Difference]: Without dead ends: 15 [2021-10-13 07:07:40,756 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:07:40,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-10-13 07:07:40,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2021-10-13 07:07:40,760 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) [2021-10-13 07:07:40,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-10-13 07:07:40,761 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 4 [2021-10-13 07:07:40,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:07:40,761 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-10-13 07:07:40,762 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) [2021-10-13 07:07:40,762 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-10-13 07:07:40,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 07:07:40,763 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:07:40,763 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 07:07:40,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 07:07:40,764 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)] === [2021-10-13 07:07:40,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:07:40,765 INFO L82 PathProgramCache]: Analyzing trace with hash 925739501, now seen corresponding path program 1 times [2021-10-13 07:07:40,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:07:40,766 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267531664] [2021-10-13 07:07:40,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:07:40,767 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:07:40,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:07:40,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:07:40,800 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:07:40,801 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267531664] [2021-10-13 07:07:40,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267531664] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:07:40,801 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:07:40,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-13 07:07:40,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943732399] [2021-10-13 07:07:40,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:07:40,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:07:40,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:07:40,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:07:40,805 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) [2021-10-13 07:07:40,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:07:40,825 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2021-10-13 07:07:40,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:07:40,826 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 [2021-10-13 07:07:40,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:07:40,827 INFO L225 Difference]: With dead ends: 14 [2021-10-13 07:07:40,827 INFO L226 Difference]: Without dead ends: 13 [2021-10-13 07:07:40,828 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:07:40,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-10-13 07:07:40,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-10-13 07:07:40,831 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) [2021-10-13 07:07:40,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-10-13 07:07:40,832 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 6 [2021-10-13 07:07:40,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:07:40,833 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-10-13 07:07:40,833 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) [2021-10-13 07:07:40,834 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-10-13 07:07:40,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 07:07:40,834 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:07:40,835 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2021-10-13 07:07:40,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 07:07:40,836 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)] === [2021-10-13 07:07:40,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:07:40,837 INFO L82 PathProgramCache]: Analyzing trace with hash 577431471, now seen corresponding path program 1 times [2021-10-13 07:07:40,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:07:40,838 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017119683] [2021-10-13 07:07:40,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:07:40,838 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:07:40,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:07:40,924 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:07:40,926 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:07:40,933 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017119683] [2021-10-13 07:07:40,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017119683] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 07:07:40,934 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131535468] [2021-10-13 07:07:40,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:07:40,935 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:07:40,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3574ff67-450e-4268-b6f6-233776a5f0ed/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:07:40,941 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3574ff67-450e-4268-b6f6-233776a5f0ed/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:07:40,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3574ff67-450e-4268-b6f6-233776a5f0ed/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 07:07:41,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:07:41,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 07:07:41,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:07:41,233 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:07:41,234 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:07:41,332 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:07:41,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2131535468] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-13 07:07:41,333 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2021-10-13 07:07:41,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 9 [2021-10-13 07:07:41,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358332998] [2021-10-13 07:07:41,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 07:07:41,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:07:41,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 07:07:41,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2021-10-13 07:07:41,337 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) [2021-10-13 07:07:41,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:07:41,424 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2021-10-13 07:07:41,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 07:07:41,425 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 [2021-10-13 07:07:41,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:07:41,426 INFO L225 Difference]: With dead ends: 14 [2021-10-13 07:07:41,426 INFO L226 Difference]: Without dead ends: 13 [2021-10-13 07:07:41,427 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 112.7ms TimeCoverageRelationStatistics Valid=54, Invalid=78, Unknown=0, NotChecked=0, Total=132 [2021-10-13 07:07:41,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-10-13 07:07:41,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2021-10-13 07:07:41,436 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) [2021-10-13 07:07:41,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2021-10-13 07:07:41,437 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2021-10-13 07:07:41,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:07:41,440 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2021-10-13 07:07:41,441 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) [2021-10-13 07:07:41,441 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2021-10-13 07:07:41,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 07:07:41,442 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:07:41,442 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2021-10-13 07:07:41,479 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3574ff67-450e-4268-b6f6-233776a5f0ed/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:07:41,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3574ff67-450e-4268-b6f6-233776a5f0ed/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:07:41,643 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)] === [2021-10-13 07:07:41,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:07:41,644 INFO L82 PathProgramCache]: Analyzing trace with hash 720506461, now seen corresponding path program 1 times [2021-10-13 07:07:41,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:07:41,645 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934867701] [2021-10-13 07:07:41,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:07:41,646 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:07:41,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:07:41,757 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:07:41,757 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:07:41,758 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934867701] [2021-10-13 07:07:41,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934867701] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 07:07:41,758 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942797896] [2021-10-13 07:07:41,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:07:41,759 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:07:41,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3574ff67-450e-4268-b6f6-233776a5f0ed/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:07:41,775 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3574ff67-450e-4268-b6f6-233776a5f0ed/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:07:41,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3574ff67-450e-4268-b6f6-233776a5f0ed/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-13 07:07:41,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:07:41,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 07:07:41,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:07:41,925 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:07:41,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:07:42,003 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:07:42,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [942797896] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:07:42,004 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [136406485] [2021-10-13 07:07:42,047 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2021-10-13 07:07:42,047 INFO L166 IcfgInterpreter]: Building call graph [2021-10-13 07:07:42,054 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-13 07:07:42,065 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-13 07:07:42,066 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-13 07:07:42,105 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:07:42,123 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-13 07:07:42,130 INFO L180 QuantifierPusher]: treesize reduction 7, result has 78.8 percent of original size [2021-10-13 07:07:42,135 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-10-13 07:07:42,141 INFO L180 QuantifierPusher]: treesize reduction 8, result has 77.8 percent of original size [2021-10-13 07:07:42,145 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-10-13 07:07:42,149 INFO L180 QuantifierPusher]: treesize reduction 9, result has 80.0 percent of original size [2021-10-13 07:07:42,154 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-10-13 07:07:42,159 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:42,180 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:42,204 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:42,227 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.8 percent of original size [2021-10-13 07:07:42,234 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-10-13 07:07:42,240 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:07:42,247 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 102 [2021-10-13 07:07:42,251 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:42,332 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:42,334 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:42,335 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:42,345 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:42,348 INFO L180 QuantifierPusher]: treesize reduction 5, result has 76.2 percent of original size [2021-10-13 07:07:42,351 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-10-13 07:07:42,354 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:07:42,358 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-10-13 07:07:42,364 INFO L180 QuantifierPusher]: treesize reduction 5, result has 76.2 percent of original size [2021-10-13 07:07:42,367 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-10-13 07:07:42,369 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:42,372 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:42,378 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:42,381 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:42,400 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:42,408 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:42,420 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:42,426 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:42,438 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:42,442 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:42,448 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:42,451 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:42,458 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:42,472 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:42,476 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:42,479 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:42,489 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-13 07:07:42,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [136406485] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:07:42,712 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2021-10-13 07:07:42,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3, 3, 3] total 11 [2021-10-13 07:07:42,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397372833] [2021-10-13 07:07:42,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:07:42,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:07:42,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:07:42,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-10-13 07:07:42,726 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) [2021-10-13 07:07:42,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:07:42,933 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2021-10-13 07:07:42,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 07:07:42,934 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 [2021-10-13 07:07:42,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:07:42,934 INFO L225 Difference]: With dead ends: 12 [2021-10-13 07:07:42,935 INFO L226 Difference]: Without dead ends: 11 [2021-10-13 07:07:42,935 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 423.5ms TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2021-10-13 07:07:42,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-10-13 07:07:42,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-10-13 07:07:42,938 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) [2021-10-13 07:07:42,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2021-10-13 07:07:42,940 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2021-10-13 07:07:42,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:07:42,941 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2021-10-13 07:07:42,942 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) [2021-10-13 07:07:42,942 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2021-10-13 07:07:42,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 07:07:42,943 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:07:42,943 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1] [2021-10-13 07:07:42,990 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3574ff67-450e-4268-b6f6-233776a5f0ed/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-13 07:07:43,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3574ff67-450e-4268-b6f6-233776a5f0ed/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:07:43,169 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)] === [2021-10-13 07:07:43,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:07:43,169 INFO L82 PathProgramCache]: Analyzing trace with hash 860863857, now seen corresponding path program 1 times [2021-10-13 07:07:43,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:07:43,170 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249193175] [2021-10-13 07:07:43,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:07:43,170 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:07:43,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:07:43,226 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:07:43,228 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:07:43,228 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249193175] [2021-10-13 07:07:43,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249193175] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 07:07:43,232 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642864045] [2021-10-13 07:07:43,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:07:43,233 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:07:43,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3574ff67-450e-4268-b6f6-233776a5f0ed/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:07:43,237 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3574ff67-450e-4268-b6f6-233776a5f0ed/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:07:43,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3574ff67-450e-4268-b6f6-233776a5f0ed/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-13 07:07:43,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:07:43,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:07:43,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:07:43,339 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:07:43,340 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:07:43,424 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:07:43,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642864045] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:07:43,424 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [275614828] [2021-10-13 07:07:43,428 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2021-10-13 07:07:43,428 INFO L166 IcfgInterpreter]: Building call graph [2021-10-13 07:07:43,429 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-13 07:07:43,429 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-13 07:07:43,429 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-13 07:07:43,437 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:07:43,439 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-13 07:07:43,445 INFO L180 QuantifierPusher]: treesize reduction 7, result has 78.8 percent of original size [2021-10-13 07:07:43,448 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-10-13 07:07:43,451 INFO L180 QuantifierPusher]: treesize reduction 8, result has 77.8 percent of original size [2021-10-13 07:07:43,454 INFO L185 QuantifierPusher]: treesize reduction 8, result has 60.0 percent of original size 12 [2021-10-13 07:07:43,457 INFO L180 QuantifierPusher]: treesize reduction 15, result has 63.4 percent of original size [2021-10-13 07:07:43,460 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-10-13 07:07:43,462 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:43,465 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:43,470 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:43,477 INFO L180 QuantifierPusher]: treesize reduction 5, result has 92.4 percent of original size [2021-10-13 07:07:43,481 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-10-13 07:07:43,485 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:07:43,490 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 88 [2021-10-13 07:07:43,493 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:43,506 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:43,507 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:43,513 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:43,516 INFO L180 QuantifierPusher]: treesize reduction 5, result has 76.2 percent of original size [2021-10-13 07:07:43,518 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-10-13 07:07:43,521 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:07:43,524 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-10-13 07:07:43,528 INFO L180 QuantifierPusher]: treesize reduction 5, result has 76.2 percent of original size [2021-10-13 07:07:43,530 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-10-13 07:07:43,532 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:43,535 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:43,538 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:43,540 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:43,546 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:43,550 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:43,554 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:43,557 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:43,561 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:43,568 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:43,572 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:43,574 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:43,580 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-13 07:07:43,780 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 07:07:43,781 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-13 07:07:43,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2021-10-13 07:07:43,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755656612] [2021-10-13 07:07:43,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:07:43,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:07:43,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:07:43,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-10-13 07:07:43,783 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) [2021-10-13 07:07:43,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:07:43,849 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2021-10-13 07:07:43,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 07:07:43,850 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 [2021-10-13 07:07:43,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:07:43,852 INFO L225 Difference]: With dead ends: 27 [2021-10-13 07:07:43,852 INFO L226 Difference]: Without dead ends: 26 [2021-10-13 07:07:43,852 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 215.9ms TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-10-13 07:07:43,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-10-13 07:07:43,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-10-13 07:07:43,859 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) [2021-10-13 07:07:43,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2021-10-13 07:07:43,860 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 10 [2021-10-13 07:07:43,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:07:43,861 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2021-10-13 07:07:43,861 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) [2021-10-13 07:07:43,861 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2021-10-13 07:07:43,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 07:07:43,863 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:07:43,863 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1] [2021-10-13 07:07:43,917 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3574ff67-450e-4268-b6f6-233776a5f0ed/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-13 07:07:44,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3574ff67-450e-4268-b6f6-233776a5f0ed/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:07:44,079 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)] === [2021-10-13 07:07:44,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:07:44,080 INFO L82 PathProgramCache]: Analyzing trace with hash -333652957, now seen corresponding path program 2 times [2021-10-13 07:07:44,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:07:44,080 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911283401] [2021-10-13 07:07:44,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:07:44,081 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:07:44,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:07:44,185 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:07:44,186 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:07:44,186 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911283401] [2021-10-13 07:07:44,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911283401] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 07:07:44,186 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082710013] [2021-10-13 07:07:44,187 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 07:07:44,187 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:07:44,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3574ff67-450e-4268-b6f6-233776a5f0ed/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:07:44,188 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3574ff67-450e-4268-b6f6-233776a5f0ed/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:07:44,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3574ff67-450e-4268-b6f6-233776a5f0ed/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-13 07:07:44,254 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-10-13 07:07:44,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 07:07:44,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 07:07:44,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:07:44,376 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:07:44,376 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:07:44,558 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:07:44,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082710013] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:07:44,559 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [73506180] [2021-10-13 07:07:44,562 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2021-10-13 07:07:44,562 INFO L166 IcfgInterpreter]: Building call graph [2021-10-13 07:07:44,562 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-13 07:07:44,563 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-13 07:07:44,563 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-13 07:07:44,570 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:07:44,572 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-13 07:07:44,577 INFO L180 QuantifierPusher]: treesize reduction 7, result has 78.8 percent of original size [2021-10-13 07:07:44,580 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-10-13 07:07:44,583 INFO L180 QuantifierPusher]: treesize reduction 8, result has 77.8 percent of original size [2021-10-13 07:07:44,591 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-10-13 07:07:44,594 INFO L180 QuantifierPusher]: treesize reduction 9, result has 80.0 percent of original size [2021-10-13 07:07:44,598 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-10-13 07:07:44,600 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:44,603 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:44,613 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:44,620 INFO L180 QuantifierPusher]: treesize reduction 5, result has 93.8 percent of original size [2021-10-13 07:07:44,628 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-10-13 07:07:44,633 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:07:44,638 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 102 [2021-10-13 07:07:44,642 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:44,651 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:44,653 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:44,654 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:44,659 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:44,661 INFO L180 QuantifierPusher]: treesize reduction 5, result has 76.2 percent of original size [2021-10-13 07:07:44,663 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-10-13 07:07:44,666 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:07:44,669 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-10-13 07:07:44,673 INFO L180 QuantifierPusher]: treesize reduction 5, result has 76.2 percent of original size [2021-10-13 07:07:44,675 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-10-13 07:07:44,677 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:44,679 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:44,682 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:44,684 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:44,689 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:44,691 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:44,694 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:44,696 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:44,701 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:44,704 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:44,709 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:44,711 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:44,717 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-13 07:07:44,951 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 07:07:44,951 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-13 07:07:44,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2021-10-13 07:07:44,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566031775] [2021-10-13 07:07:44,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 07:07:44,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:07:44,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 07:07:44,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-10-13 07:07:44,954 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) [2021-10-13 07:07:45,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:07:45,051 INFO L93 Difference]: Finished difference Result 57 states and 62 transitions. [2021-10-13 07:07:45,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 07:07:45,052 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 [2021-10-13 07:07:45,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:07:45,054 INFO L225 Difference]: With dead ends: 57 [2021-10-13 07:07:45,054 INFO L226 Difference]: Without dead ends: 56 [2021-10-13 07:07:45,055 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 58 SyntacticMatches, 5 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 313.3ms TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-10-13 07:07:45,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-10-13 07:07:45,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-10-13 07:07:45,074 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) [2021-10-13 07:07:45,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2021-10-13 07:07:45,083 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 25 [2021-10-13 07:07:45,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:07:45,084 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2021-10-13 07:07:45,084 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) [2021-10-13 07:07:45,084 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2021-10-13 07:07:45,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-10-13 07:07:45,086 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:07:45,086 INFO L512 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 1, 1] [2021-10-13 07:07:45,133 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3574ff67-450e-4268-b6f6-233776a5f0ed/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-13 07:07:45,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3574ff67-450e-4268-b6f6-233776a5f0ed/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-10-13 07:07:45,287 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)] === [2021-10-13 07:07:45,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:07:45,288 INFO L82 PathProgramCache]: Analyzing trace with hash -1266934173, now seen corresponding path program 3 times [2021-10-13 07:07:45,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:07:45,288 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210115802] [2021-10-13 07:07:45,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:07:45,289 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:07:45,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:07:45,487 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:07:45,488 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:07:45,488 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210115802] [2021-10-13 07:07:45,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210115802] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 07:07:45,488 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418053470] [2021-10-13 07:07:45,489 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 07:07:45,489 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:07:45,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3574ff67-450e-4268-b6f6-233776a5f0ed/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:07:45,496 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3574ff67-450e-4268-b6f6-233776a5f0ed/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:07:45,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3574ff67-450e-4268-b6f6-233776a5f0ed/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-13 07:07:45,602 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 07:07:45,602 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 07:07:45,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 07:07:45,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:07:45,836 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:07:45,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:07:46,247 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:07:46,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [418053470] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:07:46,248 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1788444292] [2021-10-13 07:07:46,251 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2021-10-13 07:07:46,251 INFO L166 IcfgInterpreter]: Building call graph [2021-10-13 07:07:46,252 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-13 07:07:46,252 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-13 07:07:46,253 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-13 07:07:46,261 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:07:46,264 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-13 07:07:46,268 INFO L180 QuantifierPusher]: treesize reduction 7, result has 78.8 percent of original size [2021-10-13 07:07:46,274 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-10-13 07:07:46,277 INFO L180 QuantifierPusher]: treesize reduction 8, result has 77.8 percent of original size [2021-10-13 07:07:46,282 INFO L185 QuantifierPusher]: treesize reduction 8, result has 60.0 percent of original size 12 [2021-10-13 07:07:46,285 INFO L180 QuantifierPusher]: treesize reduction 15, result has 63.4 percent of original size [2021-10-13 07:07:46,288 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-10-13 07:07:46,290 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:46,293 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:46,298 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:46,303 INFO L180 QuantifierPusher]: treesize reduction 5, result has 92.4 percent of original size [2021-10-13 07:07:46,307 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-10-13 07:07:46,311 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:07:46,321 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 88 [2021-10-13 07:07:46,326 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:46,333 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:46,334 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:46,338 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:46,341 INFO L180 QuantifierPusher]: treesize reduction 5, result has 76.2 percent of original size [2021-10-13 07:07:46,345 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-10-13 07:07:46,348 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:07:46,351 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-10-13 07:07:46,355 INFO L180 QuantifierPusher]: treesize reduction 5, result has 76.2 percent of original size [2021-10-13 07:07:46,357 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-10-13 07:07:46,358 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:46,360 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:46,362 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:46,363 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:46,367 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:46,369 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:46,372 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:46,374 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:46,378 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:46,381 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:46,384 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:46,387 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:46,391 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-13 07:07:46,803 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 07:07:46,803 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-13 07:07:46,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2021-10-13 07:07:46,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500134237] [2021-10-13 07:07:46,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-13 07:07:46,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:07:46,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-13 07:07:46,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=290, Invalid=522, Unknown=0, NotChecked=0, Total=812 [2021-10-13 07:07:46,807 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) [2021-10-13 07:07:46,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:07:46,984 INFO L93 Difference]: Finished difference Result 117 states and 128 transitions. [2021-10-13 07:07:46,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-13 07:07:46,985 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 [2021-10-13 07:07:46,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:07:46,987 INFO L225 Difference]: With dead ends: 117 [2021-10-13 07:07:46,987 INFO L226 Difference]: Without dead ends: 116 [2021-10-13 07:07:46,988 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 136 SyntacticMatches, 11 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 518 ImplicationChecksByTransitivity, 690.0ms TimeCoverageRelationStatistics Valid=290, Invalid=522, Unknown=0, NotChecked=0, Total=812 [2021-10-13 07:07:46,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-10-13 07:07:47,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2021-10-13 07:07:47,001 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) [2021-10-13 07:07:47,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 116 transitions. [2021-10-13 07:07:47,003 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 116 transitions. Word has length 55 [2021-10-13 07:07:47,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:07:47,004 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 116 transitions. [2021-10-13 07:07:47,004 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) [2021-10-13 07:07:47,004 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 116 transitions. [2021-10-13 07:07:47,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-10-13 07:07:47,010 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:07:47,010 INFO L512 BasicCegarLoop]: trace histogram [23, 23, 23, 22, 22, 1, 1] [2021-10-13 07:07:47,052 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3574ff67-450e-4268-b6f6-233776a5f0ed/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-13 07:07:47,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3574ff67-450e-4268-b6f6-233776a5f0ed/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:07:47,233 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)] === [2021-10-13 07:07:47,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:07:47,233 INFO L82 PathProgramCache]: Analyzing trace with hash 1393971939, now seen corresponding path program 4 times [2021-10-13 07:07:47,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:07:47,234 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131799497] [2021-10-13 07:07:47,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:07:47,234 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:07:47,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:07:47,823 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:07:47,823 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:07:47,823 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131799497] [2021-10-13 07:07:47,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131799497] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 07:07:47,823 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377675773] [2021-10-13 07:07:47,824 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 07:07:47,824 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:07:47,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3574ff67-450e-4268-b6f6-233776a5f0ed/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:07:47,829 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3574ff67-450e-4268-b6f6-233776a5f0ed/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:07:47,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3574ff67-450e-4268-b6f6-233776a5f0ed/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-13 07:07:47,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:07:47,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-13 07:07:48,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:07:48,466 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:07:48,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:07:49,762 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:07:49,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1377675773] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:07:49,763 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1221505439] [2021-10-13 07:07:49,766 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2021-10-13 07:07:49,766 INFO L166 IcfgInterpreter]: Building call graph [2021-10-13 07:07:49,766 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-13 07:07:49,766 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-13 07:07:49,767 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-13 07:07:49,772 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:07:49,774 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-13 07:07:49,781 INFO L180 QuantifierPusher]: treesize reduction 7, result has 78.8 percent of original size [2021-10-13 07:07:49,783 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-10-13 07:07:49,786 INFO L180 QuantifierPusher]: treesize reduction 8, result has 77.8 percent of original size [2021-10-13 07:07:49,787 INFO L185 QuantifierPusher]: treesize reduction 8, result has 60.0 percent of original size 12 [2021-10-13 07:07:49,790 INFO L180 QuantifierPusher]: treesize reduction 15, result has 63.4 percent of original size [2021-10-13 07:07:49,792 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-10-13 07:07:49,793 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:49,796 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:49,799 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:49,804 INFO L180 QuantifierPusher]: treesize reduction 5, result has 92.4 percent of original size [2021-10-13 07:07:49,807 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-10-13 07:07:49,810 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:07:49,814 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 88 [2021-10-13 07:07:49,817 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:49,825 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:49,827 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:49,832 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:49,834 INFO L180 QuantifierPusher]: treesize reduction 5, result has 76.2 percent of original size [2021-10-13 07:07:49,841 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-10-13 07:07:49,842 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:07:49,845 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-10-13 07:07:49,848 INFO L180 QuantifierPusher]: treesize reduction 5, result has 76.2 percent of original size [2021-10-13 07:07:49,850 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-10-13 07:07:49,851 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:49,852 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:49,855 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:49,856 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:49,860 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:49,862 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:49,864 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:49,866 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:49,869 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:49,871 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:49,874 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:49,876 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:49,880 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-13 07:07:50,710 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 07:07:50,710 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-13 07:07:50,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 46 [2021-10-13 07:07:50,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571801062] [2021-10-13 07:07:50,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-10-13 07:07:50,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:07:50,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-10-13 07:07:50,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1142, Invalid=1614, Unknown=0, NotChecked=0, Total=2756 [2021-10-13 07:07:50,716 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) [2021-10-13 07:07:51,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:07:51,104 INFO L93 Difference]: Finished difference Result 237 states and 260 transitions. [2021-10-13 07:07:51,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-10-13 07:07:51,105 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 [2021-10-13 07:07:51,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:07:51,111 INFO L225 Difference]: With dead ends: 237 [2021-10-13 07:07:51,111 INFO L226 Difference]: Without dead ends: 236 [2021-10-13 07:07:51,113 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 292 SyntacticMatches, 23 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1922 ImplicationChecksByTransitivity, 1976.3ms TimeCoverageRelationStatistics Valid=1142, Invalid=1614, Unknown=0, NotChecked=0, Total=2756 [2021-10-13 07:07:51,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2021-10-13 07:07:51,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 236. [2021-10-13 07:07:51,154 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) [2021-10-13 07:07:51,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 236 transitions. [2021-10-13 07:07:51,158 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 236 transitions. Word has length 115 [2021-10-13 07:07:51,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:07:51,165 INFO L470 AbstractCegarLoop]: Abstraction has 236 states and 236 transitions. [2021-10-13 07:07:51,165 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) [2021-10-13 07:07:51,165 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 236 transitions. [2021-10-13 07:07:51,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-10-13 07:07:51,175 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:07:51,175 INFO L512 BasicCegarLoop]: trace histogram [47, 47, 47, 46, 46, 1, 1] [2021-10-13 07:07:51,233 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3574ff67-450e-4268-b6f6-233776a5f0ed/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-13 07:07:51,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3574ff67-450e-4268-b6f6-233776a5f0ed/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:07:51,409 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)] === [2021-10-13 07:07:51,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:07:51,409 INFO L82 PathProgramCache]: Analyzing trace with hash 1923709923, now seen corresponding path program 5 times [2021-10-13 07:07:51,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:07:51,410 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42775399] [2021-10-13 07:07:51,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:07:51,410 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:07:51,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:07:53,086 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:07:53,086 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:07:53,087 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42775399] [2021-10-13 07:07:53,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42775399] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 07:07:53,087 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764115201] [2021-10-13 07:07:53,087 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 07:07:53,088 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:07:53,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3574ff67-450e-4268-b6f6-233776a5f0ed/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:07:53,100 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3574ff67-450e-4268-b6f6-233776a5f0ed/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:07:53,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3574ff67-450e-4268-b6f6-233776a5f0ed/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-13 07:07:53,318 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-10-13 07:07:53,318 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 07:07:53,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 07:07:53,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:07:54,211 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 737 proven. 21 refuted. 0 times theorem prover too weak. 4601 trivial. 0 not checked. [2021-10-13 07:07:54,211 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:07:55,218 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 737 proven. 21 refuted. 0 times theorem prover too weak. 4601 trivial. 0 not checked. [2021-10-13 07:07:55,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1764115201] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:07:55,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [741310911] [2021-10-13 07:07:55,230 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2021-10-13 07:07:55,230 INFO L166 IcfgInterpreter]: Building call graph [2021-10-13 07:07:55,230 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-13 07:07:55,231 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-13 07:07:55,231 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-13 07:07:55,238 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:07:55,240 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-13 07:07:55,248 INFO L180 QuantifierPusher]: treesize reduction 7, result has 78.8 percent of original size [2021-10-13 07:07:55,251 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-10-13 07:07:55,254 INFO L180 QuantifierPusher]: treesize reduction 8, result has 77.8 percent of original size [2021-10-13 07:07:55,256 INFO L185 QuantifierPusher]: treesize reduction 8, result has 60.0 percent of original size 12 [2021-10-13 07:07:55,259 INFO L180 QuantifierPusher]: treesize reduction 15, result has 63.4 percent of original size [2021-10-13 07:07:55,261 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-10-13 07:07:55,262 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:55,265 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:55,268 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:55,272 INFO L180 QuantifierPusher]: treesize reduction 5, result has 92.4 percent of original size [2021-10-13 07:07:55,278 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-10-13 07:07:55,281 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:07:55,284 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 88 [2021-10-13 07:07:55,286 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:55,295 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:55,296 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:55,299 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:55,302 INFO L180 QuantifierPusher]: treesize reduction 5, result has 76.2 percent of original size [2021-10-13 07:07:55,304 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-10-13 07:07:55,306 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:07:55,307 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-10-13 07:07:55,311 INFO L180 QuantifierPusher]: treesize reduction 5, result has 76.2 percent of original size [2021-10-13 07:07:55,315 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-10-13 07:07:55,317 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:55,319 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:55,321 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:55,323 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:55,327 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:55,329 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:55,331 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:55,334 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:55,337 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:55,340 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:55,361 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:55,363 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:07:55,367 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-13 07:07:58,834 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 07:07:58,834 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-13 07:07:58,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 8, 8] total 62 [2021-10-13 07:07:58,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180049466] [2021-10-13 07:07:58,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2021-10-13 07:07:58,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:07:58,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2021-10-13 07:07:58,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1556, Invalid=3000, Unknown=0, NotChecked=0, Total=4556 [2021-10-13 07:07:58,841 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) [2021-10-13 07:08:06,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:08:06,914 INFO L93 Difference]: Finished difference Result 243 states and 244 transitions. [2021-10-13 07:08:06,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2021-10-13 07:08:06,915 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 [2021-10-13 07:08:06,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:08:06,916 INFO L225 Difference]: With dead ends: 243 [2021-10-13 07:08:06,916 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 07:08:06,942 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 894 GetRequests, 637 SyntacticMatches, 47 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16506 ImplicationChecksByTransitivity, 12644.2ms TimeCoverageRelationStatistics Valid=12307, Invalid=32425, Unknown=0, NotChecked=0, Total=44732 [2021-10-13 07:08:06,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 07:08:06,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 07:08:06,943 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) [2021-10-13 07:08:06,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 07:08:06,943 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 235 [2021-10-13 07:08:06,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:08:06,944 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 07:08:06,944 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) [2021-10-13 07:08:06,944 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 07:08:06,945 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 07:08:06,948 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:08:06,948 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:08:06,949 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:08:06,949 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:08:06,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3574ff67-450e-4268-b6f6-233776a5f0ed/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-13 07:08:07,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3574ff67-450e-4268-b6f6-233776a5f0ed/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable110 [2021-10-13 07:08:07,171 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 07:08:07,173 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:08:07,632 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-10-13 07:08:07,632 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 07:08:07,632 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2021-10-13 07:08:07,633 INFO L857 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2021-10-13 07:08:07,633 INFO L857 garLoopResultBuilder]: For program point L19-1(line 19) no Hoare annotation was computed. [2021-10-13 07:08:07,633 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)))) [2021-10-13 07:08:07,634 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-10-13 07:08:07,634 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2021-10-13 07:08:07,634 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 07:08:07,634 INFO L857 garLoopResultBuilder]: For program point L18(line 18) no Hoare annotation was computed. [2021-10-13 07:08:07,634 INFO L857 garLoopResultBuilder]: For program point L18-1(line 18) no Hoare annotation was computed. [2021-10-13 07:08:07,638 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:08:07,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:08:07 BoogieIcfgContainer [2021-10-13 07:08:07,657 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:08:07,658 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:08:07,658 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:08:07,658 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:08:07,659 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:07:40" (3/4) ... [2021-10-13 07:08:07,663 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 07:08:07,671 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-10-13 07:08:07,672 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-10-13 07:08:07,672 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 07:08:07,700 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3574ff67-450e-4268-b6f6-233776a5f0ed/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 07:08:07,700 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:08:07,701 INFO L168 Benchmark]: Toolchain (without parser) took 28286.60 ms. Allocated memory was 100.7 MB in the beginning and 146.8 MB in the end (delta: 46.1 MB). Free memory was 60.2 MB in the beginning and 102.3 MB in the end (delta: -42.1 MB). Peak memory consumption was 6.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:08:07,701 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 100.7 MB. Free memory is still 77.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:08:07,702 INFO L168 Benchmark]: CACSL2BoogieTranslator took 235.40 ms. Allocated memory is still 100.7 MB. Free memory was 60.0 MB in the beginning and 51.6 MB in the end (delta: 8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:08:07,702 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.76 ms. Allocated memory is still 100.7 MB. Free memory was 51.4 MB in the beginning and 50.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:08:07,703 INFO L168 Benchmark]: Boogie Preprocessor took 22.32 ms. Allocated memory is still 100.7 MB. Free memory was 50.1 MB in the beginning and 49.3 MB in the end (delta: 805.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:08:07,703 INFO L168 Benchmark]: RCFGBuilder took 389.12 ms. Allocated memory is still 100.7 MB. Free memory was 49.1 MB in the beginning and 40.5 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:08:07,704 INFO L168 Benchmark]: TraceAbstraction took 27539.78 ms. Allocated memory was 100.7 MB in the beginning and 146.8 MB in the end (delta: 46.1 MB). Free memory was 39.9 MB in the beginning and 104.4 MB in the end (delta: -64.5 MB). Peak memory consumption was 54.7 MB. Max. memory is 16.1 GB. [2021-10-13 07:08:07,704 INFO L168 Benchmark]: Witness Printer took 42.59 ms. Allocated memory is still 146.8 MB. Free memory was 104.4 MB in the beginning and 102.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:08:07,706 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 100.7 MB. Free memory is still 77.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 235.40 ms. Allocated memory is still 100.7 MB. Free memory was 60.0 MB in the beginning and 51.6 MB in the end (delta: 8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.76 ms. Allocated memory is still 100.7 MB. Free memory was 51.4 MB in the beginning and 50.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.32 ms. Allocated memory is still 100.7 MB. Free memory was 50.1 MB in the beginning and 49.3 MB in the end (delta: 805.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 389.12 ms. Allocated memory is still 100.7 MB. Free memory was 49.1 MB in the beginning and 40.5 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 27539.78 ms. Allocated memory was 100.7 MB in the beginning and 146.8 MB in the end (delta: 46.1 MB). Free memory was 39.9 MB in the beginning and 104.4 MB in the end (delta: -64.5 MB). Peak memory consumption was 54.7 MB. Max. memory is 16.1 GB. * Witness Printer took 42.59 ms. Allocated memory is still 146.8 MB. Free memory was 104.4 MB in the beginning and 102.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms 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: 27386.6ms, OverallIterations: 10, TraceHistogramMax: 47, EmptinessCheckTime: 34.5ms, AutomataDifference: 9323.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 462.7ms, InitialAbstractionConstructionTime: 20.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 28 SDtfs, 463 SDslu, 83 SDs, 0 SdLazy, 730 SolverSat, 317 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1057.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1596 GetRequests, 1164 SyntacticMatches, 91 SemanticMatches, 341 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19193 ImplicationChecksByTransitivity, 16408.9ms Time, 0.0ms 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, 0.0ms DumpTime, AutomataMinimizationStatistics: 138.9ms AutomataMinimizationTime, 10 MinimizatonAttempts, 3 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 49 NumberOfFragments, 78 HoareAnnotationTreeSize, 1 FomulaSimplifications, 198 FormulaSimplificationTreeSizeReduction, 136.9ms HoareSimplificationTime, 1 FomulaSimplificationsInter, 2000 FormulaSimplificationTreeSizeReductionInter, 318.6ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 74.1ms SsaConstructionTime, 550.9ms SatisfiabilityAnalysisTime, 7730.0ms 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]: 449, 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]: 93, 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]: 83, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 22, FLUID_QUERY_TIME[ms]: 4, FLUID_QUERIES: 39, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 4, DOMAIN_JOIN_TIME[ms]: 115, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 2, DOMAIN_WIDEN_TIME[ms]: 160, DOMAIN_ISSUBSETEQ_APPLICATIONS: 3, DOMAIN_ISSUBSETEQ_TIME[ms]: 6, DOMAIN_ISBOTTOM_APPLICATIONS: 9, DOMAIN_ISBOTTOM_TIME[ms]: 10, 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]: 3, PATH_EXPR_TIME[ms]: 4, REGEX_TO_DAG_TIME[ms]: 3, DAG_COMPRESSION_TIME[ms]: 10, 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! [2021-10-13 07:08:07,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3574ff67-450e-4268-b6f6-233776a5f0ed/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...