./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a-modified.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dab97f33-8fc7-468e-96c9-7857224460ea/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dab97f33-8fc7-468e-96c9-7857224460ea/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dab97f33-8fc7-468e-96c9-7857224460ea/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dab97f33-8fc7-468e-96c9-7857224460ea/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a-modified.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dab97f33-8fc7-468e-96c9-7857224460ea/bin/utaipan-mTDlp9Zugs/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dab97f33-8fc7-468e-96c9-7857224460ea/bin/utaipan-mTDlp9Zugs --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 9a661b9ed427d2e9174ef6e6cb1f5d6d0ab8d9e2 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:49:36,942 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:49:36,946 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:49:36,985 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:49:36,986 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:49:36,988 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:49:36,990 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:49:36,993 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:49:36,996 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:49:36,997 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:49:36,999 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:49:37,001 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:49:37,001 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:49:37,003 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:49:37,005 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:49:37,007 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:49:37,008 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:49:37,010 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:49:37,013 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:49:37,016 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:49:37,018 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:49:37,020 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:49:37,022 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:49:37,023 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:49:37,027 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:49:37,028 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:49:37,028 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:49:37,029 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:49:37,030 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:49:37,031 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:49:37,032 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:49:37,033 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:49:37,034 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:49:37,035 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:49:37,037 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:49:37,037 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:49:37,038 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:49:37,039 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:49:37,039 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:49:37,041 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:49:37,042 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:49:37,045 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dab97f33-8fc7-468e-96c9-7857224460ea/bin/utaipan-mTDlp9Zugs/config/svcomp-Overflow-64bit-Taipan_Default.epf [2021-10-16 02:49:37,099 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:49:37,100 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:49:37,102 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:49:37,102 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:49:37,103 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:49:37,103 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:49:37,103 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 02:49:37,103 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:49:37,111 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:49:37,112 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 02:49:37,113 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 02:49:37,113 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:49:37,114 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 02:49:37,114 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 02:49:37,114 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 02:49:37,115 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:49:37,115 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-16 02:49:37,116 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:49:37,116 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:49:37,116 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:49:37,116 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:49:37,117 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:49:37,117 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-16 02:49:37,117 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:49:37,117 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:49:37,118 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:49:37,118 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:49:37,118 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:49:37,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:49:37,120 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:49:37,121 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:49:37,121 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:49:37,121 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 02:49:37,122 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 02:49:37,122 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:49:37,122 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:49:37,122 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:49:37,123 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_dab97f33-8fc7-468e-96c9-7857224460ea/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dab97f33-8fc7-468e-96c9-7857224460ea/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a661b9ed427d2e9174ef6e6cb1f5d6d0ab8d9e2 [2021-10-16 02:49:37,494 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:49:37,527 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:49:37,530 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:49:37,532 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:49:37,532 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:49:37,534 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dab97f33-8fc7-468e-96c9-7857224460ea/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a-modified.c [2021-10-16 02:49:37,614 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dab97f33-8fc7-468e-96c9-7857224460ea/bin/utaipan-mTDlp9Zugs/data/261dc2c60/22806c8b11514ee3af1747e31a1cb47b/FLAGdd2720a8c [2021-10-16 02:49:38,216 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:49:38,218 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dab97f33-8fc7-468e-96c9-7857224460ea/sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a-modified.c [2021-10-16 02:49:38,233 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dab97f33-8fc7-468e-96c9-7857224460ea/bin/utaipan-mTDlp9Zugs/data/261dc2c60/22806c8b11514ee3af1747e31a1cb47b/FLAGdd2720a8c [2021-10-16 02:49:38,563 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dab97f33-8fc7-468e-96c9-7857224460ea/bin/utaipan-mTDlp9Zugs/data/261dc2c60/22806c8b11514ee3af1747e31a1cb47b [2021-10-16 02:49:38,568 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:49:38,569 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:49:38,573 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:49:38,573 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:49:38,577 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:49:38,579 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:49:38" (1/1) ... [2021-10-16 02:49:38,580 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32279e6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:49:38, skipping insertion in model container [2021-10-16 02:49:38,581 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:49:38" (1/1) ... [2021-10-16 02:49:38,605 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:49:38,623 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:49:38,843 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:49:38,848 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:49:38,874 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:49:38,893 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:49:38,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:49:38 WrapperNode [2021-10-16 02:49:38,894 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:49:38,896 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:49:38,896 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:49:38,896 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:49:38,906 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:49:38" (1/1) ... [2021-10-16 02:49:38,912 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:49:38" (1/1) ... [2021-10-16 02:49:38,936 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:49:38,938 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:49:38,938 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:49:38,938 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:49:38,948 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:49:38" (1/1) ... [2021-10-16 02:49:38,948 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:49:38" (1/1) ... [2021-10-16 02:49:38,950 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:49:38" (1/1) ... [2021-10-16 02:49:38,951 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:49:38" (1/1) ... [2021-10-16 02:49:38,955 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:49:38" (1/1) ... [2021-10-16 02:49:38,960 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:49:38" (1/1) ... [2021-10-16 02:49:38,961 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:49:38" (1/1) ... [2021-10-16 02:49:38,967 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:49:38,970 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:49:38,971 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:49:38,971 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:49:38,972 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:49:38" (1/1) ... [2021-10-16 02:49:38,982 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:49:38,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dab97f33-8fc7-468e-96c9-7857224460ea/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:49:39,018 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dab97f33-8fc7-468e-96c9-7857224460ea/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:49:39,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dab97f33-8fc7-468e-96c9-7857224460ea/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:49:39,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:49:39,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:49:39,351 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:49:39,352 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-16 02:49:39,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:49:39 BoogieIcfgContainer [2021-10-16 02:49:39,355 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:49:39,359 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:49:39,359 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:49:39,364 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:49:39,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:49:38" (1/3) ... [2021-10-16 02:49:39,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67ecd812 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:49:39, skipping insertion in model container [2021-10-16 02:49:39,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:49:38" (2/3) ... [2021-10-16 02:49:39,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67ecd812 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:49:39, skipping insertion in model container [2021-10-16 02:49:39,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:49:39" (3/3) ... [2021-10-16 02:49:39,370 INFO L111 eAbstractionObserver]: Analyzing ICFG CookSeeZuleger-TACAS2013-Fig8a-modified.c [2021-10-16 02:49:39,377 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:49:39,377 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-10-16 02:49:39,454 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:49:39,467 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 [2021-10-16 02:49:39,468 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-16 02:49:39,492 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 11 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) [2021-10-16 02:49:39,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-16 02:49:39,499 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:49:39,500 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-16 02:49:39,501 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-16 02:49:39,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:49:39,509 INFO L82 PathProgramCache]: Analyzing trace with hash 963531, now seen corresponding path program 1 times [2021-10-16 02:49:39,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:49:39,522 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610473386] [2021-10-16 02:49:39,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:49:39,524 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:49:39,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:49:39,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:49:39,848 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:49:39,849 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610473386] [2021-10-16 02:49:39,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610473386] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:49:39,851 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:49:39,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:49:39,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595195608] [2021-10-16 02:49:39,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 02:49:39,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:49:39,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 02:49:39,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:49:39,892 INFO L87 Difference]: Start difference. First operand has 12 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 11 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) Second operand has 5 states, 4 states have (on average 1.0) internal successors, (4), 4 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) [2021-10-16 02:49:40,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:49:40,025 INFO L93 Difference]: Finished difference Result 21 states and 25 transitions. [2021-10-16 02:49:40,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 02:49:40,027 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 4 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 [2021-10-16 02:49:40,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:49:40,038 INFO L225 Difference]: With dead ends: 21 [2021-10-16 02:49:40,038 INFO L226 Difference]: Without dead ends: 18 [2021-10-16 02:49:40,041 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.8ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:49:40,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-10-16 02:49:40,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2021-10-16 02:49:40,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 15 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) [2021-10-16 02:49:40,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2021-10-16 02:49:40,082 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 4 [2021-10-16 02:49:40,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:49:40,082 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2021-10-16 02:49:40,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 4 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) [2021-10-16 02:49:40,083 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2021-10-16 02:49:40,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-16 02:49:40,084 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:49:40,085 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-16 02:49:40,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 02:49:40,086 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-16 02:49:40,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:49:40,087 INFO L82 PathProgramCache]: Analyzing trace with hash 963339, now seen corresponding path program 1 times [2021-10-16 02:49:40,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:49:40,088 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093504047] [2021-10-16 02:49:40,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:49:40,089 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:49:40,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:49:40,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:49:40,118 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:49:40,119 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093504047] [2021-10-16 02:49:40,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093504047] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:49:40,120 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:49:40,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-16 02:49:40,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837563120] [2021-10-16 02:49:40,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:49:40,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:49:40,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:49:40,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:49:40,126 INFO L87 Difference]: Start difference. First operand 16 states and 20 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:49:40,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:49:40,167 INFO L93 Difference]: Finished difference Result 17 states and 20 transitions. [2021-10-16 02:49:40,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:49:40,168 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-16 02:49:40,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:49:40,169 INFO L225 Difference]: With dead ends: 17 [2021-10-16 02:49:40,170 INFO L226 Difference]: Without dead ends: 16 [2021-10-16 02:49:40,171 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 [2021-10-16 02:49:40,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-10-16 02:49:40,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-10-16 02:49:40,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 15 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:49:40,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2021-10-16 02:49:40,177 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 4 [2021-10-16 02:49:40,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:49:40,210 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2021-10-16 02:49:40,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:49:40,211 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2021-10-16 02:49:40,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-16 02:49:40,212 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:49:40,212 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-16 02:49:40,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-16 02:49:40,213 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)] === [2021-10-16 02:49:40,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:49:40,214 INFO L82 PathProgramCache]: Analyzing trace with hash 29869514, now seen corresponding path program 1 times [2021-10-16 02:49:40,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:49:40,215 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576400645] [2021-10-16 02:49:40,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:49:40,215 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:49:40,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:49:40,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:49:40,255 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:49:40,258 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576400645] [2021-10-16 02:49:40,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576400645] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:49:40,261 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:49:40,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-16 02:49:40,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846819487] [2021-10-16 02:49:40,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:49:40,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:49:40,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:49:40,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:49:40,265 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:49:40,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:49:40,316 INFO L93 Difference]: Finished difference Result 16 states and 19 transitions. [2021-10-16 02:49:40,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:49:40,317 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-16 02:49:40,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:49:40,318 INFO L225 Difference]: With dead ends: 16 [2021-10-16 02:49:40,318 INFO L226 Difference]: Without dead ends: 15 [2021-10-16 02:49:40,319 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:49:40,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-10-16 02:49:40,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-10-16 02:49:40,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 12 states have (on average 1.5) internal successors, (18), 14 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:49:40,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2021-10-16 02:49:40,324 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 5 [2021-10-16 02:49:40,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:49:40,324 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 18 transitions. [2021-10-16 02:49:40,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:49:40,325 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2021-10-16 02:49:40,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-16 02:49:40,325 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:49:40,326 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-16 02:49:40,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-16 02:49:40,326 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-16 02:49:40,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:49:40,327 INFO L82 PathProgramCache]: Analyzing trace with hash 29863556, now seen corresponding path program 1 times [2021-10-16 02:49:40,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:49:40,328 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712710750] [2021-10-16 02:49:40,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:49:40,328 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:49:40,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:49:40,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:49:40,362 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:49:40,363 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712710750] [2021-10-16 02:49:40,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712710750] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:49:40,364 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:49:40,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 02:49:40,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332622545] [2021-10-16 02:49:40,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:49:40,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:49:40,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:49:40,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:49:40,367 INFO L87 Difference]: Start difference. First operand 15 states and 18 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:49:40,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:49:40,398 INFO L93 Difference]: Finished difference Result 15 states and 18 transitions. [2021-10-16 02:49:40,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:49:40,398 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-16 02:49:40,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:49:40,399 INFO L225 Difference]: With dead ends: 15 [2021-10-16 02:49:40,399 INFO L226 Difference]: Without dead ends: 14 [2021-10-16 02:49:40,400 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:49:40,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-10-16 02:49:40,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-10-16 02:49:40,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:49:40,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2021-10-16 02:49:40,405 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 5 [2021-10-16 02:49:40,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:49:40,405 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-10-16 02:49:40,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:49:40,406 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2021-10-16 02:49:40,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-16 02:49:40,406 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:49:40,407 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1] [2021-10-16 02:49:40,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-16 02:49:40,407 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-16 02:49:40,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:49:40,408 INFO L82 PathProgramCache]: Analyzing trace with hash 784501312, now seen corresponding path program 1 times [2021-10-16 02:49:40,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:49:40,409 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089107577] [2021-10-16 02:49:40,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:49:40,409 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:49:40,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:49:40,536 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:49:40,537 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:49:40,537 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089107577] [2021-10-16 02:49:40,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089107577] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 02:49:40,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482528527] [2021-10-16 02:49:40,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:49:40,539 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:49:40,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dab97f33-8fc7-468e-96c9-7857224460ea/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:49:40,560 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dab97f33-8fc7-468e-96c9-7857224460ea/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:49:40,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dab97f33-8fc7-468e-96c9-7857224460ea/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-16 02:49:40,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:49:40,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 02:49:40,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:49:40,792 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:49:40,793 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:49:40,927 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:49:40,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1482528527] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:49:40,928 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1014979853] [2021-10-16 02:49:40,953 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2021-10-16 02:49:40,954 INFO L166 IcfgInterpreter]: Building call graph [2021-10-16 02:49:40,964 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-16 02:49:40,970 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-16 02:49:40,971 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-16 02:49:41,007 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:49:41,013 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-10-16 02:49:41,023 INFO L180 QuantifierPusher]: treesize reduction 9, result has 76.9 percent of original size [2021-10-16 02:49:41,028 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-10-16 02:49:41,038 INFO L180 QuantifierPusher]: treesize reduction 9, result has 76.9 percent of original size [2021-10-16 02:49:41,042 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-10-16 02:49:41,045 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:49:41,087 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:49:41,110 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:49:41,118 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:49:41,134 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:49:41,144 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:49:41,153 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:49:41,160 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:49:41,179 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:49:41,195 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:49:41,212 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:49:41,215 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:49:41,226 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:49:41,251 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:49:41,281 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:49:41,284 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:49:41,301 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-16 02:49:41,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1014979853] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:49:41,473 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2021-10-16 02:49:41,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 3, 3] total 9 [2021-10-16 02:49:41,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359610643] [2021-10-16 02:49:41,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 02:49:41,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:49:41,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 02:49:41,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2021-10-16 02:49:41,477 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 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) [2021-10-16 02:49:41,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:49:41,511 INFO L93 Difference]: Finished difference Result 14 states and 16 transitions. [2021-10-16 02:49:41,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 02:49:41,520 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 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 8 [2021-10-16 02:49:41,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:49:41,520 INFO L225 Difference]: With dead ends: 14 [2021-10-16 02:49:41,521 INFO L226 Difference]: Without dead ends: 0 [2021-10-16 02:49:41,521 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 251.3ms TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2021-10-16 02:49:41,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-16 02:49:41,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-16 02:49:41,525 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) [2021-10-16 02:49:41,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-16 02:49:41,525 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2021-10-16 02:49:41,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:49:41,526 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-16 02:49:41,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 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) [2021-10-16 02:49:41,526 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-16 02:49:41,527 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-16 02:49:41,530 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-16 02:49:41,530 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-16 02:49:41,531 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-16 02:49:41,532 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-16 02:49:41,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dab97f33-8fc7-468e-96c9-7857224460ea/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:49:41,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dab97f33-8fc7-468e-96c9-7857224460ea/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:49:41,753 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-16 02:49:41,755 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:49:41,777 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2021-10-16 02:49:41,777 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-16 02:49:41,777 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 21) no Hoare annotation was computed. [2021-10-16 02:49:41,778 INFO L857 garLoopResultBuilder]: For program point L21(line 21) no Hoare annotation was computed. [2021-10-16 02:49:41,778 INFO L857 garLoopResultBuilder]: For program point L21-1(line 21) no Hoare annotation was computed. [2021-10-16 02:49:41,778 INFO L857 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2021-10-16 02:49:41,778 INFO L857 garLoopResultBuilder]: For program point L19-1(line 19) no Hoare annotation was computed. [2021-10-16 02:49:41,779 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2021-10-16 02:49:41,779 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 21) no Hoare annotation was computed. [2021-10-16 02:49:41,779 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-16 02:49:41,779 INFO L857 garLoopResultBuilder]: For program point L18(lines 18 22) no Hoare annotation was computed. [2021-10-16 02:49:41,780 INFO L853 garLoopResultBuilder]: At program point L18-2(lines 17 23) the Hoare annotation is: (and (<= ULTIMATE.start_main_~K~0 2147483647) (<= 0 (+ ULTIMATE.start_main_~K~0 2147483648)) (<= ULTIMATE.start_main_~x~0 2147483647) (<= 0 (+ ULTIMATE.start_main_~x~0 2147483648))) [2021-10-16 02:49:41,785 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:49:41,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:49:41 BoogieIcfgContainer [2021-10-16 02:49:41,812 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:49:41,813 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:49:41,813 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:49:41,813 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:49:41,814 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:49:39" (3/4) ... [2021-10-16 02:49:41,818 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-16 02:49:41,831 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-10-16 02:49:41,832 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-10-16 02:49:41,832 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-16 02:49:41,886 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dab97f33-8fc7-468e-96c9-7857224460ea/bin/utaipan-mTDlp9Zugs/witness.graphml [2021-10-16 02:49:41,887 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:49:41,888 INFO L168 Benchmark]: Toolchain (without parser) took 3318.00 ms. Allocated memory was 86.0 MB in the beginning and 125.8 MB in the end (delta: 39.8 MB). Free memory was 47.4 MB in the beginning and 53.9 MB in the end (delta: -6.5 MB). Peak memory consumption was 33.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:49:41,889 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 86.0 MB. Free memory was 63.5 MB in the beginning and 63.5 MB in the end (delta: 38.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:49:41,889 INFO L168 Benchmark]: CACSL2BoogieTranslator took 322.30 ms. Allocated memory was 86.0 MB in the beginning and 125.8 MB in the end (delta: 39.8 MB). Free memory was 47.2 MB in the beginning and 103.6 MB in the end (delta: -56.4 MB). Peak memory consumption was 5.8 MB. Max. memory is 16.1 GB. [2021-10-16 02:49:41,890 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.60 ms. Allocated memory is still 125.8 MB. Free memory was 103.6 MB in the beginning and 102.3 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:49:41,890 INFO L168 Benchmark]: Boogie Preprocessor took 30.21 ms. Allocated memory is still 125.8 MB. Free memory was 102.3 MB in the beginning and 101.5 MB in the end (delta: 780.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:49:41,891 INFO L168 Benchmark]: RCFGBuilder took 385.85 ms. Allocated memory is still 125.8 MB. Free memory was 101.5 MB in the beginning and 92.9 MB in the end (delta: 8.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-16 02:49:41,892 INFO L168 Benchmark]: TraceAbstraction took 2453.35 ms. Allocated memory is still 125.8 MB. Free memory was 92.4 MB in the beginning and 56.0 MB in the end (delta: 36.4 MB). Peak memory consumption was 39.7 MB. Max. memory is 16.1 GB. [2021-10-16 02:49:41,892 INFO L168 Benchmark]: Witness Printer took 73.81 ms. Allocated memory is still 125.8 MB. Free memory was 56.0 MB in the beginning and 53.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:49:41,895 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 86.0 MB. Free memory was 63.5 MB in the beginning and 63.5 MB in the end (delta: 38.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 322.30 ms. Allocated memory was 86.0 MB in the beginning and 125.8 MB in the end (delta: 39.8 MB). Free memory was 47.2 MB in the beginning and 103.6 MB in the end (delta: -56.4 MB). Peak memory consumption was 5.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.60 ms. Allocated memory is still 125.8 MB. Free memory was 103.6 MB in the beginning and 102.3 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.21 ms. Allocated memory is still 125.8 MB. Free memory was 102.3 MB in the beginning and 101.5 MB in the end (delta: 780.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 385.85 ms. Allocated memory is still 125.8 MB. Free memory was 101.5 MB in the beginning and 92.9 MB in the end (delta: 8.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2453.35 ms. Allocated memory is still 125.8 MB. Free memory was 92.4 MB in the beginning and 56.0 MB in the end (delta: 36.4 MB). Peak memory consumption was 39.7 MB. Max. memory is 16.1 GB. * Witness Printer took 73.81 ms. Allocated memory is still 125.8 MB. Free memory was 56.0 MB in the beginning and 53.9 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: 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 - PositiveResult [Line: 21]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 21]: 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, 12 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 2334.1ms, OverallIterations: 5, TraceHistogramMax: 2, EmptinessCheckTime: 16.4ms, AutomataDifference: 364.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 25.1ms, InitialAbstractionConstructionTime: 17.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 11 SDtfs, 46 SDslu, 0 SDs, 0 SdLazy, 84 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 176.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 14 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 307.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=1, InterpolantAutomatonStates: 20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 37.5ms AutomataMinimizationTime, 5 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 2 NumberOfFragments, 17 HoareAnnotationTreeSize, 1 FomulaSimplifications, 28 FormulaSimplificationTreeSizeReduction, 3.6ms HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 15.1ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 18.8ms SsaConstructionTime, 73.5ms SatisfiabilityAnalysisTime, 674.7ms InterpolantComputationTime, 34 NumberOfCodeBlocks, 34 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 35 ConstructedInterpolants, 0 QuantifiedInterpolants, 154 SizeOfPredicates, 2 NumberOfNonLiveVariables, 19 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 3/9 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]: 348, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 7, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 12, TOOLS_POST_TIME[ms]: 30, 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: 12, TOOLS_QUANTIFIERELIM_TIME[ms]: 25, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 9, FLUID_QUERY_TIME[ms]: 3, FLUID_QUERIES: 22, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 4, DOMAIN_JOIN_TIME[ms]: 253, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 0, DOMAIN_WIDEN_TIME[ms]: 0, DOMAIN_ISSUBSETEQ_APPLICATIONS: 1, DOMAIN_ISSUBSETEQ_TIME[ms]: 3, DOMAIN_ISBOTTOM_APPLICATIONS: 7, DOMAIN_ISBOTTOM_TIME[ms]: 8, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 15, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 15, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 1, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME[ms]: 0, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 0, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 2, PATH_EXPR_TIME[ms]: 3, REGEX_TO_DAG_TIME[ms]: 3, DAG_COMPRESSION_TIME[ms]: 10, DAG_COMPRESSION_PROCESSED_NODES: 65, DAG_COMPRESSION_RETAINED_NODES: 24, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((K <= 2147483647 && 0 <= K + 2147483648) && x <= 2147483647) && 0 <= x + 2147483648 RESULT: Ultimate proved your program to be correct! [2021-10-16 02:49:41,956 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dab97f33-8fc7-468e-96c9-7857224460ea/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...