./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive/McCarthy91-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80ec0e14-1da0-473b-ba1f-d10e94cc14c4/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80ec0e14-1da0-473b-ba1f-d10e94cc14c4/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80ec0e14-1da0-473b-ba1f-d10e94cc14c4/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80ec0e14-1da0-473b-ba1f-d10e94cc14c4/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive/McCarthy91-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80ec0e14-1da0-473b-ba1f-d10e94cc14c4/bin/utaipan-TEXQjIfE4P/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80ec0e14-1da0-473b-ba1f-d10e94cc14c4/bin/utaipan-TEXQjIfE4P --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 32bit --witnessprinter.graph.data.programhash a7241ade69e14c61e98aa837796de568ecf31fbd07f5084e15c262d93cdb3376 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 00:33:37,912 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 00:33:37,916 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 00:33:37,982 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 00:33:37,983 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 00:33:37,989 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 00:33:37,992 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 00:33:37,994 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 00:33:37,997 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 00:33:37,998 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 00:33:37,999 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 00:33:38,001 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 00:33:38,001 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 00:33:38,003 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 00:33:38,004 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 00:33:38,006 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 00:33:38,007 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 00:33:38,008 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 00:33:38,011 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 00:33:38,016 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 00:33:38,023 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 00:33:38,025 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 00:33:38,030 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 00:33:38,032 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 00:33:38,036 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 00:33:38,038 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 00:33:38,039 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 00:33:38,040 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 00:33:38,042 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 00:33:38,044 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 00:33:38,044 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 00:33:38,045 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 00:33:38,048 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 00:33:38,049 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 00:33:38,051 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 00:33:38,052 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 00:33:38,053 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 00:33:38,053 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 00:33:38,053 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 00:33:38,054 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 00:33:38,055 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 00:33:38,056 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80ec0e14-1da0-473b-ba1f-d10e94cc14c4/bin/utaipan-TEXQjIfE4P/config/svcomp-Overflow-32bit-Taipan_Default.epf [2021-11-21 00:33:38,105 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 00:33:38,105 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 00:33:38,106 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 00:33:38,107 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 00:33:38,115 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 00:33:38,116 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 00:33:38,116 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 00:33:38,116 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 00:33:38,116 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 00:33:38,117 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 00:33:38,118 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 00:33:38,119 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 00:33:38,119 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 00:33:38,119 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 00:33:38,119 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 00:33:38,120 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 00:33:38,120 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 00:33:38,120 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 00:33:38,121 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 00:33:38,122 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 00:33:38,122 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-21 00:33:38,122 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 00:33:38,122 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 00:33:38,123 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 00:33:38,123 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 00:33:38,123 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 00:33:38,123 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 00:33:38,124 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-21 00:33:38,124 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 00:33:38,124 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 00:33:38,125 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 00:33:38,125 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 00:33:38,125 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 00:33:38,126 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 00:33:38,126 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:33:38,126 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 00:33:38,127 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 00:33:38,127 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 00:33:38,127 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 00:33:38,127 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 00:33:38,128 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 00:33:38,128 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 00:33:38,128 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 00:33:38,130 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_80ec0e14-1da0-473b-ba1f-d10e94cc14c4/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80ec0e14-1da0-473b-ba1f-d10e94cc14c4/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a7241ade69e14c61e98aa837796de568ecf31fbd07f5084e15c262d93cdb3376 [2021-11-21 00:33:38,384 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 00:33:38,405 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 00:33:38,408 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 00:33:38,410 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 00:33:38,410 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 00:33:38,412 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80ec0e14-1da0-473b-ba1f-d10e94cc14c4/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/recursive/McCarthy91-1.c [2021-11-21 00:33:38,475 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80ec0e14-1da0-473b-ba1f-d10e94cc14c4/bin/utaipan-TEXQjIfE4P/data/c157e1296/3542ba22d7bc4d0cbdda2e823f9278ca/FLAG54a6a7ae0 [2021-11-21 00:33:38,927 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 00:33:38,928 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80ec0e14-1da0-473b-ba1f-d10e94cc14c4/sv-benchmarks/c/recursive/McCarthy91-1.c [2021-11-21 00:33:38,934 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80ec0e14-1da0-473b-ba1f-d10e94cc14c4/bin/utaipan-TEXQjIfE4P/data/c157e1296/3542ba22d7bc4d0cbdda2e823f9278ca/FLAG54a6a7ae0 [2021-11-21 00:33:39,342 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80ec0e14-1da0-473b-ba1f-d10e94cc14c4/bin/utaipan-TEXQjIfE4P/data/c157e1296/3542ba22d7bc4d0cbdda2e823f9278ca [2021-11-21 00:33:39,347 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 00:33:39,350 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 00:33:39,351 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 00:33:39,351 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 00:33:39,355 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 00:33:39,356 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:33:39" (1/1) ... [2021-11-21 00:33:39,357 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24ddbe8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:33:39, skipping insertion in model container [2021-11-21 00:33:39,358 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:33:39" (1/1) ... [2021-11-21 00:33:39,365 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 00:33:39,377 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 00:33:39,541 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80ec0e14-1da0-473b-ba1f-d10e94cc14c4/sv-benchmarks/c/recursive/McCarthy91-1.c[749,762] [2021-11-21 00:33:39,543 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:33:39,551 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 00:33:39,565 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80ec0e14-1da0-473b-ba1f-d10e94cc14c4/sv-benchmarks/c/recursive/McCarthy91-1.c[749,762] [2021-11-21 00:33:39,566 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:33:39,579 INFO L208 MainTranslator]: Completed translation [2021-11-21 00:33:39,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:33:39 WrapperNode [2021-11-21 00:33:39,580 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 00:33:39,581 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 00:33:39,582 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 00:33:39,582 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 00:33:39,590 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:33:39" (1/1) ... [2021-11-21 00:33:39,597 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:33:39" (1/1) ... [2021-11-21 00:33:39,615 INFO L137 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 35 [2021-11-21 00:33:39,615 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 00:33:39,616 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 00:33:39,617 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 00:33:39,617 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 00:33:39,626 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:33:39" (1/1) ... [2021-11-21 00:33:39,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:33:39" (1/1) ... [2021-11-21 00:33:39,628 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:33:39" (1/1) ... [2021-11-21 00:33:39,628 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:33:39" (1/1) ... [2021-11-21 00:33:39,631 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:33:39" (1/1) ... [2021-11-21 00:33:39,633 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:33:39" (1/1) ... [2021-11-21 00:33:39,635 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:33:39" (1/1) ... [2021-11-21 00:33:39,636 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 00:33:39,638 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 00:33:39,638 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 00:33:39,638 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 00:33:39,639 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:33:39" (1/1) ... [2021-11-21 00:33:39,648 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:33:39,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80ec0e14-1da0-473b-ba1f-d10e94cc14c4/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:33:39,674 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80ec0e14-1da0-473b-ba1f-d10e94cc14c4/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 00:33:39,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80ec0e14-1da0-473b-ba1f-d10e94cc14c4/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 00:33:39,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 00:33:39,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 00:33:39,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 00:33:39,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 00:33:39,726 INFO L130 BoogieDeclarations]: Found specification of procedure f91 [2021-11-21 00:33:39,726 INFO L138 BoogieDeclarations]: Found implementation of procedure f91 [2021-11-21 00:33:39,786 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 00:33:39,788 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 00:33:39,899 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 00:33:39,918 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 00:33:39,918 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-21 00:33:39,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:33:39 BoogieIcfgContainer [2021-11-21 00:33:39,921 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 00:33:39,923 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 00:33:39,923 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 00:33:39,927 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 00:33:39,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 12:33:39" (1/3) ... [2021-11-21 00:33:39,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dddde88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:33:39, skipping insertion in model container [2021-11-21 00:33:39,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:33:39" (2/3) ... [2021-11-21 00:33:39,929 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dddde88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:33:39, skipping insertion in model container [2021-11-21 00:33:39,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:33:39" (3/3) ... [2021-11-21 00:33:39,931 INFO L111 eAbstractionObserver]: Analyzing ICFG McCarthy91-1.c [2021-11-21 00:33:39,936 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 00:33:39,936 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-21 00:33:39,990 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 00:33:39,998 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 00:33:39,999 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-21 00:33:40,017 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 23 states have internal predecessors, (26), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 00:33:40,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-21 00:33:40,021 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:33:40,022 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-21 00:33:40,028 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-21 00:33:40,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:33:40,051 INFO L85 PathProgramCache]: Analyzing trace with hash 82791271, now seen corresponding path program 1 times [2021-11-21 00:33:40,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:33:40,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209687343] [2021-11-21 00:33:40,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:33:40,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:33:40,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:33:40,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:33:40,361 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:33:40,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209687343] [2021-11-21 00:33:40,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209687343] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:33:40,363 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:33:40,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:33:40,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148097243] [2021-11-21 00:33:40,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:33:40,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:33:40,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:33:40,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:33:40,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:33:40,410 INFO L87 Difference]: Start difference. First operand has 28 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 23 states have internal predecessors, (26), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:33:40,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:33:40,559 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2021-11-21 00:33:40,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:33:40,563 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-21 00:33:40,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:33:40,575 INFO L225 Difference]: With dead ends: 46 [2021-11-21 00:33:40,575 INFO L226 Difference]: Without dead ends: 41 [2021-11-21 00:33:40,584 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-21 00:33:40,588 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 41 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:33:40,589 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 59 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:33:40,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-11-21 00:33:40,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 36. [2021-11-21 00:33:40,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 24 states have (on average 1.375) internal successors, (33), 28 states have internal predecessors, (33), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-21 00:33:40,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2021-11-21 00:33:40,634 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 5 [2021-11-21 00:33:40,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:33:40,634 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2021-11-21 00:33:40,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:33:40,635 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2021-11-21 00:33:40,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-21 00:33:40,635 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:33:40,635 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-21 00:33:40,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 00:33:40,636 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-21 00:33:40,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:33:40,637 INFO L85 PathProgramCache]: Analyzing trace with hash 82791431, now seen corresponding path program 1 times [2021-11-21 00:33:40,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:33:40,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437627930] [2021-11-21 00:33:40,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:33:40,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:33:40,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:33:40,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:33:40,667 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:33:40,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437627930] [2021-11-21 00:33:40,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437627930] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:33:40,668 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:33:40,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-21 00:33:40,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736983887] [2021-11-21 00:33:40,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:33:40,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:33:40,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:33:40,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:33:40,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:33:40,672 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:33:40,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:33:40,738 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2021-11-21 00:33:40,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:33:40,739 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-21 00:33:40,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:33:40,740 INFO L225 Difference]: With dead ends: 40 [2021-11-21 00:33:40,740 INFO L226 Difference]: Without dead ends: 39 [2021-11-21 00:33:40,741 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:33:40,743 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 6 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:33:40,744 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 36 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 00:33:40,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-11-21 00:33:40,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 35. [2021-11-21 00:33:40,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 27 states have internal predecessors, (31), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-21 00:33:40,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2021-11-21 00:33:40,755 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 5 [2021-11-21 00:33:40,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:33:40,755 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2021-11-21 00:33:40,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:33:40,756 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2021-11-21 00:33:40,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-21 00:33:40,756 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:33:40,756 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-21 00:33:40,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 00:33:40,757 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-21 00:33:40,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:33:40,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1728437826, now seen corresponding path program 1 times [2021-11-21 00:33:40,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:33:40,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450562100] [2021-11-21 00:33:40,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:33:40,759 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:33:40,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:33:40,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:33:40,783 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:33:40,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450562100] [2021-11-21 00:33:40,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450562100] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:33:40,784 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:33:40,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-21 00:33:40,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005502435] [2021-11-21 00:33:40,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:33:40,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:33:40,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:33:40,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:33:40,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:33:40,786 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:33:40,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:33:40,809 INFO L93 Difference]: Finished difference Result 39 states and 48 transitions. [2021-11-21 00:33:40,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:33:40,810 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-21 00:33:40,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:33:40,811 INFO L225 Difference]: With dead ends: 39 [2021-11-21 00:33:40,812 INFO L226 Difference]: Without dead ends: 38 [2021-11-21 00:33:40,812 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:33:40,814 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 3 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:33:40,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 34 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 00:33:40,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-11-21 00:33:40,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2021-11-21 00:33:40,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 26 states have internal predecessors, (29), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-21 00:33:40,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2021-11-21 00:33:40,839 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 6 [2021-11-21 00:33:40,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:33:40,840 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2021-11-21 00:33:40,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:33:40,840 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2021-11-21 00:33:40,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-21 00:33:40,841 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:33:40,841 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-21 00:33:40,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 00:33:40,841 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-21 00:33:40,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:33:40,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1728432861, now seen corresponding path program 1 times [2021-11-21 00:33:40,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:33:40,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907257932] [2021-11-21 00:33:40,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:33:40,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:33:40,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:33:40,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:33:40,940 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:33:40,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907257932] [2021-11-21 00:33:40,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907257932] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:33:40,940 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:33:40,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:33:40,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832089334] [2021-11-21 00:33:40,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:33:40,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:33:40,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:33:40,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:33:40,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:33:40,942 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:33:41,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:33:41,023 INFO L93 Difference]: Finished difference Result 50 states and 60 transitions. [2021-11-21 00:33:41,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:33:41,024 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-21 00:33:41,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:33:41,025 INFO L225 Difference]: With dead ends: 50 [2021-11-21 00:33:41,025 INFO L226 Difference]: Without dead ends: 49 [2021-11-21 00:33:41,026 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-21 00:33:41,028 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 28 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:33:41,028 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 40 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:33:41,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-11-21 00:33:41,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 46. [2021-11-21 00:33:41,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 33 states have (on average 1.1818181818181819) internal successors, (39), 35 states have internal predecessors, (39), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-11-21 00:33:41,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 53 transitions. [2021-11-21 00:33:41,048 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 53 transitions. Word has length 6 [2021-11-21 00:33:41,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:33:41,049 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 53 transitions. [2021-11-21 00:33:41,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:33:41,050 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 53 transitions. [2021-11-21 00:33:41,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-21 00:33:41,051 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:33:41,051 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:33:41,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-21 00:33:41,052 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-21 00:33:41,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:33:41,055 INFO L85 PathProgramCache]: Analyzing trace with hash 2028675825, now seen corresponding path program 1 times [2021-11-21 00:33:41,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:33:41,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032082710] [2021-11-21 00:33:41,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:33:41,057 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:33:41,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:33:41,133 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:33:41,134 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:33:41,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032082710] [2021-11-21 00:33:41,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032082710] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:33:41,136 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:33:41,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:33:41,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115910450] [2021-11-21 00:33:41,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:33:41,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:33:41,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:33:41,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:33:41,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:33:41,139 INFO L87 Difference]: Start difference. First operand 46 states and 53 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:33:41,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:33:41,239 INFO L93 Difference]: Finished difference Result 68 states and 82 transitions. [2021-11-21 00:33:41,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:33:41,239 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), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-21 00:33:41,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:33:41,241 INFO L225 Difference]: With dead ends: 68 [2021-11-21 00:33:41,245 INFO L226 Difference]: Without dead ends: 67 [2021-11-21 00:33:41,247 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-21 00:33:41,250 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 20 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:33:41,256 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 71 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:33:41,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-11-21 00:33:41,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 58. [2021-11-21 00:33:41,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 42 states have (on average 1.1666666666666667) internal successors, (49), 44 states have internal predecessors, (49), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-21 00:33:41,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 67 transitions. [2021-11-21 00:33:41,277 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 67 transitions. Word has length 10 [2021-11-21 00:33:41,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:33:41,282 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 67 transitions. [2021-11-21 00:33:41,282 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), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:33:41,282 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 67 transitions. [2021-11-21 00:33:41,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-21 00:33:41,283 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:33:41,284 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:33:41,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-21 00:33:41,284 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-21 00:33:41,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:33:41,286 INFO L85 PathProgramCache]: Analyzing trace with hash 954490023, now seen corresponding path program 1 times [2021-11-21 00:33:41,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:33:41,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741353912] [2021-11-21 00:33:41,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:33:41,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:33:41,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:33:41,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:33:41,358 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:33:41,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741353912] [2021-11-21 00:33:41,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741353912] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:33:41,359 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:33:41,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:33:41,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613951967] [2021-11-21 00:33:41,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:33:41,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:33:41,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:33:41,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:33:41,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:33:41,363 INFO L87 Difference]: Start difference. First operand 58 states and 67 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-21 00:33:41,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:33:41,387 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2021-11-21 00:33:41,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:33:41,388 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-11-21 00:33:41,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:33:41,391 INFO L225 Difference]: With dead ends: 58 [2021-11-21 00:33:41,391 INFO L226 Difference]: Without dead ends: 47 [2021-11-21 00:33:41,392 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:33:41,396 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 2 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:33:41,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 39 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 00:33:41,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-11-21 00:33:41,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2021-11-21 00:33:41,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 33 states have (on average 1.1818181818181819) internal successors, (39), 35 states have internal predecessors, (39), 9 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-11-21 00:33:41,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2021-11-21 00:33:41,417 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 13 [2021-11-21 00:33:41,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:33:41,417 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2021-11-21 00:33:41,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-21 00:33:41,417 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2021-11-21 00:33:41,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-21 00:33:41,418 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:33:41,418 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:33:41,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-21 00:33:41,419 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-21 00:33:41,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:33:41,419 INFO L85 PathProgramCache]: Analyzing trace with hash -305440512, now seen corresponding path program 1 times [2021-11-21 00:33:41,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:33:41,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075503560] [2021-11-21 00:33:41,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:33:41,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:33:41,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:33:41,523 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 00:33:41,523 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:33:41,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075503560] [2021-11-21 00:33:41,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075503560] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:33:41,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871934495] [2021-11-21 00:33:41,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:33:41,524 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:33:41,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80ec0e14-1da0-473b-ba1f-d10e94cc14c4/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:33:41,525 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80ec0e14-1da0-473b-ba1f-d10e94cc14c4/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:33:41,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80ec0e14-1da0-473b-ba1f-d10e94cc14c4/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 00:33:41,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:33:41,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-21 00:33:41,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:33:41,775 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:33:41,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:33:42,079 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:33:42,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [871934495] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:33:42,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1162751990] [2021-11-21 00:33:42,115 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2021-11-21 00:33:42,115 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:33:42,122 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-21 00:33:42,130 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 00:33:42,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 21 [2021-11-21 00:33:42,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993883242] [2021-11-21 00:33:42,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 00:33:42,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-21 00:33:42,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:33:42,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-21 00:33:42,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2021-11-21 00:33:42,135 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand has 22 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 17 states have internal predecessors, (37), 9 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 00:33:42,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:33:42,871 INFO L93 Difference]: Finished difference Result 83 states and 106 transitions. [2021-11-21 00:33:42,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-21 00:33:42,872 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 17 states have internal predecessors, (37), 9 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 18 [2021-11-21 00:33:42,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:33:42,876 INFO L225 Difference]: With dead ends: 83 [2021-11-21 00:33:42,876 INFO L226 Difference]: Without dead ends: 82 [2021-11-21 00:33:42,880 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=486, Invalid=1320, Unknown=0, NotChecked=0, Total=1806 [2021-11-21 00:33:42,884 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 142 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:33:42,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 44 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 00:33:42,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-11-21 00:33:42,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 46. [2021-11-21 00:33:42,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 34 states have internal predecessors, (38), 9 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-11-21 00:33:42,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 54 transitions. [2021-11-21 00:33:42,923 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 54 transitions. Word has length 18 [2021-11-21 00:33:42,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:33:42,925 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 54 transitions. [2021-11-21 00:33:42,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 17 states have internal predecessors, (37), 9 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 00:33:42,926 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 54 transitions. [2021-11-21 00:33:42,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-21 00:33:42,928 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:33:42,928 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:33:42,979 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80ec0e14-1da0-473b-ba1f-d10e94cc14c4/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-21 00:33:43,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80ec0e14-1da0-473b-ba1f-d10e94cc14c4/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-21 00:33:43,146 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-21 00:33:43,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:33:43,147 INFO L85 PathProgramCache]: Analyzing trace with hash -878716246, now seen corresponding path program 1 times [2021-11-21 00:33:43,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:33:43,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575271168] [2021-11-21 00:33:43,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:33:43,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:33:43,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:33:43,245 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 00:33:43,245 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:33:43,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575271168] [2021-11-21 00:33:43,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575271168] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:33:43,248 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:33:43,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-21 00:33:43,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588011158] [2021-11-21 00:33:43,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:33:43,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-21 00:33:43,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:33:43,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-21 00:33:43,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-21 00:33:43,254 INFO L87 Difference]: Start difference. First operand 46 states and 54 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-21 00:33:43,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:33:43,372 INFO L93 Difference]: Finished difference Result 98 states and 127 transitions. [2021-11-21 00:33:43,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-21 00:33:43,373 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2021-11-21 00:33:43,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:33:43,379 INFO L225 Difference]: With dead ends: 98 [2021-11-21 00:33:43,379 INFO L226 Difference]: Without dead ends: 97 [2021-11-21 00:33:43,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-11-21 00:33:43,381 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 24 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:33:43,382 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 62 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:33:43,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-11-21 00:33:43,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 88. [2021-11-21 00:33:43,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 60 states have (on average 1.1166666666666667) internal successors, (67), 64 states have internal predecessors, (67), 19 states have call successors, (19), 6 states have call predecessors, (19), 8 states have return successors, (22), 17 states have call predecessors, (22), 16 states have call successors, (22) [2021-11-21 00:33:43,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 108 transitions. [2021-11-21 00:33:43,429 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 108 transitions. Word has length 19 [2021-11-21 00:33:43,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:33:43,430 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 108 transitions. [2021-11-21 00:33:43,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-21 00:33:43,430 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 108 transitions. [2021-11-21 00:33:43,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-21 00:33:43,441 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:33:43,442 INFO L514 BasicCegarLoop]: trace histogram [7, 5, 5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2021-11-21 00:33:43,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-21 00:33:43,443 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-21 00:33:43,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:33:43,444 INFO L85 PathProgramCache]: Analyzing trace with hash 572512239, now seen corresponding path program 1 times [2021-11-21 00:33:43,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:33:43,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872245531] [2021-11-21 00:33:43,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:33:43,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:33:43,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:33:43,547 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-11-21 00:33:43,548 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:33:43,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872245531] [2021-11-21 00:33:43,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872245531] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:33:43,548 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:33:43,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-21 00:33:43,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504663732] [2021-11-21 00:33:43,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:33:43,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-21 00:33:43,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:33:43,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-21 00:33:43,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-21 00:33:43,551 INFO L87 Difference]: Start difference. First operand 88 states and 108 transitions. Second operand has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-21 00:33:43,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:33:43,716 INFO L93 Difference]: Finished difference Result 92 states and 120 transitions. [2021-11-21 00:33:43,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-21 00:33:43,717 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 45 [2021-11-21 00:33:43,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:33:43,718 INFO L225 Difference]: With dead ends: 92 [2021-11-21 00:33:43,718 INFO L226 Difference]: Without dead ends: 0 [2021-11-21 00:33:43,726 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-11-21 00:33:43,729 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 18 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:33:43,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 55 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:33:43,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-21 00:33:43,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-21 00:33:43,732 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) [2021-11-21 00:33:43,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-21 00:33:43,732 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 45 [2021-11-21 00:33:43,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:33:43,733 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-21 00:33:43,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-21 00:33:43,733 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-21 00:33:43,733 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-21 00:33:43,738 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 6 remaining) [2021-11-21 00:33:43,738 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2021-11-21 00:33:43,739 INFO L764 garLoopResultBuilder]: Registering result SAFE for location f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2021-11-21 00:33:43,739 INFO L764 garLoopResultBuilder]: Registering result SAFE for location f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2021-11-21 00:33:43,739 INFO L764 garLoopResultBuilder]: Registering result SAFE for location f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2021-11-21 00:33:43,740 INFO L764 garLoopResultBuilder]: Registering result SAFE for location f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 6 remaining) [2021-11-21 00:33:43,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-21 00:33:43,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-21 00:33:44,076 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 29) no Hoare annotation was computed. [2021-11-21 00:33:44,076 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-21 00:33:44,076 INFO L858 garLoopResultBuilder]: For program point L29(line 29) no Hoare annotation was computed. [2021-11-21 00:33:44,076 INFO L858 garLoopResultBuilder]: For program point L29-2(line 29) no Hoare annotation was computed. [2021-11-21 00:33:44,077 INFO L858 garLoopResultBuilder]: For program point L29-3(line 29) no Hoare annotation was computed. [2021-11-21 00:33:44,077 INFO L858 garLoopResultBuilder]: For program point L29-4(line 29) no Hoare annotation was computed. [2021-11-21 00:33:44,077 INFO L858 garLoopResultBuilder]: For program point L29-6(line 29) no Hoare annotation was computed. [2021-11-21 00:33:44,077 INFO L854 garLoopResultBuilder]: At program point L29-7(lines 29 33) the Hoare annotation is: (<= |ULTIMATE.start_main_~x~0#1| 2147483647) [2021-11-21 00:33:44,077 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 29) no Hoare annotation was computed. [2021-11-21 00:33:44,077 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-21 00:33:44,078 INFO L854 garLoopResultBuilder]: At program point L28(line 28) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483648))) [2021-11-21 00:33:44,078 INFO L858 garLoopResultBuilder]: For program point L28-1(line 28) no Hoare annotation was computed. [2021-11-21 00:33:44,078 INFO L858 garLoopResultBuilder]: For program point L21(line 21) no Hoare annotation was computed. [2021-11-21 00:33:44,078 INFO L858 garLoopResultBuilder]: For program point L21-1(line 21) no Hoare annotation was computed. [2021-11-21 00:33:44,078 INFO L858 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2021-11-21 00:33:44,078 INFO L854 garLoopResultBuilder]: At program point L21-2(line 21) the Hoare annotation is: (and (or (and (<= 91 f91_~x) (<= f91_~x 100)) (not (<= |f91_#in~x| 2147483648)) (not (<= 91 |f91_#in~x|))) (or (not (<= 0 (+ |f91_#in~x| 2147483648))) (and (<= 0 (+ f91_~x 2147483648)) (<= f91_~x |f91_#in~x|)) (not (<= |f91_#in~x| 2147483647)))) [2021-11-21 00:33:44,078 INFO L858 garLoopResultBuilder]: For program point f91EXIT(lines 17 23) no Hoare annotation was computed. [2021-11-21 00:33:44,078 INFO L858 garLoopResultBuilder]: For program point L18(lines 18 22) no Hoare annotation was computed. [2021-11-21 00:33:44,078 INFO L858 garLoopResultBuilder]: For program point L19-1(line 19) no Hoare annotation was computed. [2021-11-21 00:33:44,079 INFO L858 garLoopResultBuilder]: For program point L21-3(line 21) no Hoare annotation was computed. [2021-11-21 00:33:44,079 INFO L854 garLoopResultBuilder]: At program point L21-4(line 21) the Hoare annotation is: (let ((.cse0 (<= |f91_#t~ret4| 2147483648)) (.cse1 (<= 91 |f91_#t~ret4|))) (and (or (not (<= 0 (+ |f91_#in~x| 2147483648))) (and (<= 0 (+ f91_~x 2147483648)) .cse0 (<= f91_~x |f91_#in~x|) .cse1) (not (<= |f91_#in~x| 2147483647))) (or (and (<= 91 f91_~x) .cse0 (<= f91_~x 100) .cse1) (not (<= |f91_#in~x| 2147483648)) (not (<= 91 |f91_#in~x|))))) [2021-11-21 00:33:44,079 INFO L858 garLoopResultBuilder]: For program point L21-5(line 21) no Hoare annotation was computed. [2021-11-21 00:33:44,079 INFO L858 garLoopResultBuilder]: For program point f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2021-11-21 00:33:44,079 INFO L861 garLoopResultBuilder]: At program point f91ENTRY(lines 17 23) the Hoare annotation is: true [2021-11-21 00:33:44,079 INFO L858 garLoopResultBuilder]: For program point f91FINAL(lines 17 23) no Hoare annotation was computed. [2021-11-21 00:33:44,079 INFO L858 garLoopResultBuilder]: For program point f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2021-11-21 00:33:44,080 INFO L858 garLoopResultBuilder]: For program point f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 21) no Hoare annotation was computed. [2021-11-21 00:33:44,080 INFO L858 garLoopResultBuilder]: For program point f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 21) no Hoare annotation was computed. [2021-11-21 00:33:44,086 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:33:44,088 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-21 00:33:44,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 12:33:44 BoogieIcfgContainer [2021-11-21 00:33:44,110 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-21 00:33:44,110 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-21 00:33:44,111 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-21 00:33:44,111 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-21 00:33:44,111 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:33:39" (3/4) ... [2021-11-21 00:33:44,115 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-21 00:33:44,136 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure f91 [2021-11-21 00:33:44,145 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-11-21 00:33:44,145 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-11-21 00:33:44,146 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-11-21 00:33:44,146 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-21 00:33:44,183 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80ec0e14-1da0-473b-ba1f-d10e94cc14c4/bin/utaipan-TEXQjIfE4P/witness.graphml [2021-11-21 00:33:44,184 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-21 00:33:44,185 INFO L158 Benchmark]: Toolchain (without parser) took 4834.83ms. Allocated memory was 81.8MB in the beginning and 119.5MB in the end (delta: 37.7MB). Free memory was 45.1MB in the beginning and 95.5MB in the end (delta: -50.5MB). Peak memory consumption was 42.4MB. Max. memory is 16.1GB. [2021-11-21 00:33:44,185 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 81.8MB. Free memory was 61.1MB in the beginning and 61.1MB in the end (delta: 39.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 00:33:44,186 INFO L158 Benchmark]: CACSL2BoogieTranslator took 229.17ms. Allocated memory was 81.8MB in the beginning and 98.6MB in the end (delta: 16.8MB). Free memory was 44.9MB in the beginning and 76.9MB in the end (delta: -32.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-21 00:33:44,186 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.39ms. Allocated memory is still 98.6MB. Free memory was 76.9MB in the beginning and 75.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 00:33:44,187 INFO L158 Benchmark]: Boogie Preprocessor took 20.42ms. Allocated memory is still 98.6MB. Free memory was 75.3MB in the beginning and 74.5MB in the end (delta: 838.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 00:33:44,187 INFO L158 Benchmark]: RCFGBuilder took 283.82ms. Allocated memory is still 98.6MB. Free memory was 74.5MB in the beginning and 64.2MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-21 00:33:44,188 INFO L158 Benchmark]: TraceAbstraction took 4186.75ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 63.7MB in the beginning and 41.8MB in the end (delta: 21.9MB). Peak memory consumption was 44.6MB. Max. memory is 16.1GB. [2021-11-21 00:33:44,188 INFO L158 Benchmark]: Witness Printer took 73.51ms. Allocated memory is still 119.5MB. Free memory was 41.8MB in the beginning and 95.5MB in the end (delta: -53.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 00:33:44,191 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 81.8MB. Free memory was 61.1MB in the beginning and 61.1MB in the end (delta: 39.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 229.17ms. Allocated memory was 81.8MB in the beginning and 98.6MB in the end (delta: 16.8MB). Free memory was 44.9MB in the beginning and 76.9MB in the end (delta: -32.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.39ms. Allocated memory is still 98.6MB. Free memory was 76.9MB in the beginning and 75.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.42ms. Allocated memory is still 98.6MB. Free memory was 75.3MB in the beginning and 74.5MB in the end (delta: 838.5kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 283.82ms. Allocated memory is still 98.6MB. Free memory was 74.5MB in the beginning and 64.2MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 4186.75ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 63.7MB in the beginning and 41.8MB in the end (delta: 21.9MB). Peak memory consumption was 44.6MB. Max. memory is 16.1GB. * Witness Printer took 73.51ms. Allocated memory is still 119.5MB. Free memory was 41.8MB in the beginning and 95.5MB in the end (delta: -53.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 29]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 29]: 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 - 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 2 procedures, 28 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 4.1s, OverallIterations: 9, TraceHistogramMax: 7, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 296 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 284 mSDsluCounter, 440 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 304 mSDsCounter, 166 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 652 IncrementalHoareTripleChecker+Invalid, 818 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 166 mSolverCounterUnsat, 166 mSDtfsCounter, 652 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 116 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=88occurred in iteration=8, InterpolantAutomatonStates: 79, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 70 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 59 PreInvPairs, 59 NumberOfFragments, 99 HoareAnnotationTreeSize, 59 FomulaSimplifications, 399 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 5 FomulaSimplificationsInter, 373 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 145 NumberOfCodeBlocks, 145 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 152 ConstructedInterpolants, 0 QuantifiedInterpolants, 371 SizeOfPredicates, 4 NumberOfNonLiveVariables, 60 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 11 InterpolantComputations, 8 PerfectInterpolantSequences, 97/109 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: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: x <= 2147483647 RESULT: Ultimate proved your program to be correct! [2021-11-21 00:33:44,242 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80ec0e14-1da0-473b-ba1f-d10e94cc14c4/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE