./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/array-crafted/bAnd5.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89583dc2-da7a-4dd5-9a7b-da6914d6435c/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89583dc2-da7a-4dd5-9a7b-da6914d6435c/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89583dc2-da7a-4dd5-9a7b-da6914d6435c/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89583dc2-da7a-4dd5-9a7b-da6914d6435c/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-crafted/bAnd5.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89583dc2-da7a-4dd5-9a7b-da6914d6435c/bin/utaipan-I9t0OCRTmS/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89583dc2-da7a-4dd5-9a7b-da6914d6435c/bin/utaipan-I9t0OCRTmS --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 d475be4701a825f0568ebf884900dce77e1216a215283bc51d05a41cc9a8ddb5 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 06:56:22,933 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 06:56:22,935 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 06:56:22,985 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 06:56:22,985 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 06:56:22,987 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 06:56:22,988 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 06:56:22,990 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 06:56:22,992 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 06:56:22,993 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 06:56:22,994 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 06:56:23,003 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 06:56:23,004 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 06:56:23,010 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 06:56:23,013 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 06:56:23,015 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 06:56:23,017 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 06:56:23,019 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 06:56:23,025 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 06:56:23,029 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 06:56:23,030 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 06:56:23,035 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 06:56:23,038 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 06:56:23,040 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 06:56:23,046 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 06:56:23,050 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 06:56:23,051 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 06:56:23,052 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 06:56:23,053 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 06:56:23,054 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 06:56:23,055 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 06:56:23,056 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 06:56:23,058 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 06:56:23,060 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 06:56:23,061 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 06:56:23,061 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 06:56:23,062 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 06:56:23,063 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 06:56:23,063 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 06:56:23,064 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 06:56:23,065 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 06:56:23,066 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89583dc2-da7a-4dd5-9a7b-da6914d6435c/bin/utaipan-I9t0OCRTmS/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-19 06:56:23,095 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 06:56:23,096 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 06:56:23,096 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 06:56:23,096 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 06:56:23,097 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 06:56:23,097 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 06:56:23,097 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 06:56:23,097 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 06:56:23,097 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 06:56:23,098 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 06:56:23,098 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 06:56:23,098 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 06:56:23,098 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 06:56:23,099 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 06:56:23,099 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 06:56:23,099 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 06:56:23,099 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 06:56:23,099 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 06:56:23,100 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 06:56:23,100 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 06:56:23,100 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-19 06:56:23,100 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 06:56:23,101 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 06:56:23,101 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 06:56:23,101 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 06:56:23,101 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 06:56:23,101 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 06:56:23,102 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-19 06:56:23,102 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 06:56:23,102 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 06:56:23,102 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 06:56:23,102 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 06:56:23,103 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 06:56:23,103 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 06:56:23,103 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:56:23,103 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 06:56:23,103 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 06:56:23,103 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 06:56:23,104 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 06:56:23,104 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 06:56:23,104 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 06:56:23,104 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 06:56:23,104 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 06:56:23,105 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_89583dc2-da7a-4dd5-9a7b-da6914d6435c/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89583dc2-da7a-4dd5-9a7b-da6914d6435c/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d475be4701a825f0568ebf884900dce77e1216a215283bc51d05a41cc9a8ddb5 [2022-11-19 06:56:23,447 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 06:56:23,470 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 06:56:23,473 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 06:56:23,474 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 06:56:23,485 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 06:56:23,486 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89583dc2-da7a-4dd5-9a7b-da6914d6435c/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/array-crafted/bAnd5.i [2022-11-19 06:56:23,558 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89583dc2-da7a-4dd5-9a7b-da6914d6435c/bin/utaipan-I9t0OCRTmS/data/a727b162c/de4596b5fa084b9ca41767233cde3e8d/FLAG8f8ea4e75 [2022-11-19 06:56:24,076 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 06:56:24,082 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89583dc2-da7a-4dd5-9a7b-da6914d6435c/sv-benchmarks/c/array-crafted/bAnd5.i [2022-11-19 06:56:24,089 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89583dc2-da7a-4dd5-9a7b-da6914d6435c/bin/utaipan-I9t0OCRTmS/data/a727b162c/de4596b5fa084b9ca41767233cde3e8d/FLAG8f8ea4e75 [2022-11-19 06:56:24,432 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89583dc2-da7a-4dd5-9a7b-da6914d6435c/bin/utaipan-I9t0OCRTmS/data/a727b162c/de4596b5fa084b9ca41767233cde3e8d [2022-11-19 06:56:24,436 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 06:56:24,439 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 06:56:24,443 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 06:56:24,444 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 06:56:24,448 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 06:56:24,449 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:56:24" (1/1) ... [2022-11-19 06:56:24,450 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70ff32fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:56:24, skipping insertion in model container [2022-11-19 06:56:24,450 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:56:24" (1/1) ... [2022-11-19 06:56:24,457 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 06:56:24,477 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:56:24,717 WARN L234 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_89583dc2-da7a-4dd5-9a7b-da6914d6435c/sv-benchmarks/c/array-crafted/bAnd5.i[1369,1382] [2022-11-19 06:56:24,719 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:56:24,727 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 06:56:24,750 WARN L234 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_89583dc2-da7a-4dd5-9a7b-da6914d6435c/sv-benchmarks/c/array-crafted/bAnd5.i[1369,1382] [2022-11-19 06:56:24,751 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:56:24,766 INFO L208 MainTranslator]: Completed translation [2022-11-19 06:56:24,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:56:24 WrapperNode [2022-11-19 06:56:24,766 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 06:56:24,767 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 06:56:24,767 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 06:56:24,767 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 06:56:24,774 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:56:24" (1/1) ... [2022-11-19 06:56:24,783 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:56:24" (1/1) ... [2022-11-19 06:56:24,804 INFO L138 Inliner]: procedures = 16, calls = 30, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 88 [2022-11-19 06:56:24,804 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 06:56:24,805 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 06:56:24,805 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 06:56:24,806 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 06:56:24,815 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:56:24" (1/1) ... [2022-11-19 06:56:24,815 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:56:24" (1/1) ... [2022-11-19 06:56:24,818 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:56:24" (1/1) ... [2022-11-19 06:56:24,819 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:56:24" (1/1) ... [2022-11-19 06:56:24,825 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:56:24" (1/1) ... [2022-11-19 06:56:24,830 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:56:24" (1/1) ... [2022-11-19 06:56:24,831 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:56:24" (1/1) ... [2022-11-19 06:56:24,833 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:56:24" (1/1) ... [2022-11-19 06:56:24,835 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 06:56:24,836 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 06:56:24,836 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 06:56:24,836 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 06:56:24,837 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:56:24" (1/1) ... [2022-11-19 06:56:24,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:56:24,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89583dc2-da7a-4dd5-9a7b-da6914d6435c/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:56:24,868 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89583dc2-da7a-4dd5-9a7b-da6914d6435c/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 06:56:24,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89583dc2-da7a-4dd5-9a7b-da6914d6435c/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 06:56:24,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 06:56:24,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 06:56:24,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 06:56:24,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 06:56:24,907 INFO L130 BoogieDeclarations]: Found specification of procedure bAnd [2022-11-19 06:56:24,907 INFO L138 BoogieDeclarations]: Found implementation of procedure bAnd [2022-11-19 06:56:24,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 06:56:24,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 06:56:24,908 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 06:56:24,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 06:56:25,037 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 06:56:25,039 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 06:56:25,374 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 06:56:25,445 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 06:56:25,446 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-19 06:56:25,448 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:56:25 BoogieIcfgContainer [2022-11-19 06:56:25,449 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 06:56:25,451 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 06:56:25,452 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 06:56:25,456 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 06:56:25,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:56:24" (1/3) ... [2022-11-19 06:56:25,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33debab2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:56:25, skipping insertion in model container [2022-11-19 06:56:25,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:56:24" (2/3) ... [2022-11-19 06:56:25,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33debab2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:56:25, skipping insertion in model container [2022-11-19 06:56:25,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:56:25" (3/3) ... [2022-11-19 06:56:25,460 INFO L112 eAbstractionObserver]: Analyzing ICFG bAnd5.i [2022-11-19 06:56:25,481 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 06:56:25,481 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-11-19 06:56:25,536 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 06:56:25,544 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6e1b3fe4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 06:56:25,544 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-11-19 06:56:25,549 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 22 states have (on average 1.7727272727272727) internal successors, (39), 34 states have internal predecessors, (39), 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) [2022-11-19 06:56:25,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-19 06:56:25,557 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:56:25,558 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-19 06:56:25,558 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [bAndErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bAndErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-19 06:56:25,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:56:25,564 INFO L85 PathProgramCache]: Analyzing trace with hash 4388594, now seen corresponding path program 1 times [2022-11-19 06:56:25,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:56:25,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119840276] [2022-11-19 06:56:25,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:56:25,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:56:25,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:56:25,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:56:25,832 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:56:25,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119840276] [2022-11-19 06:56:25,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119840276] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:56:25,840 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:56:25,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:56:25,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163322418] [2022-11-19 06:56:25,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:56:25,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:56:25,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:56:25,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:56:25,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:56:25,880 INFO L87 Difference]: Start difference. First operand has 39 states, 22 states have (on average 1.7727272727272727) internal successors, (39), 34 states have internal predecessors, (39), 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 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:56:26,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:56:26,032 INFO L93 Difference]: Finished difference Result 84 states and 95 transitions. [2022-11-19 06:56:26,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 06:56:26,035 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-19 06:56:26,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:56:26,044 INFO L225 Difference]: With dead ends: 84 [2022-11-19 06:56:26,044 INFO L226 Difference]: Without dead ends: 61 [2022-11-19 06:56:26,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:56:26,050 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 26 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:56:26,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 106 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:56:26,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-11-19 06:56:26,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 39. [2022-11-19 06:56:26,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 23 states have (on average 1.6956521739130435) internal successors, (39), 35 states have internal predecessors, (39), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-19 06:56:26,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2022-11-19 06:56:26,105 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 4 [2022-11-19 06:56:26,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:56:26,106 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2022-11-19 06:56:26,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:56:26,109 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2022-11-19 06:56:26,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-19 06:56:26,110 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:56:26,111 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:56:26,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 06:56:26,112 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting bAndErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [bAndErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bAndErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-19 06:56:26,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:56:26,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1896951314, now seen corresponding path program 1 times [2022-11-19 06:56:26,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:56:26,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488672866] [2022-11-19 06:56:26,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:56:26,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:56:26,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:56:26,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:56:26,258 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:56:26,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488672866] [2022-11-19 06:56:26,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488672866] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:56:26,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:56:26,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:56:26,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368817684] [2022-11-19 06:56:26,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:56:26,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:56:26,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:56:26,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:56:26,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:56:26,262 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-11-19 06:56:26,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:56:26,303 INFO L93 Difference]: Finished difference Result 68 states and 76 transitions. [2022-11-19 06:56:26,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:56:26,304 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 7 [2022-11-19 06:56:26,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:56:26,305 INFO L225 Difference]: With dead ends: 68 [2022-11-19 06:56:26,305 INFO L226 Difference]: Without dead ends: 39 [2022-11-19 06:56:26,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:56:26,307 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 2 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:56:26,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 56 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:56:26,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-11-19 06:56:26,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2022-11-19 06:56:26,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 35 states have internal predecessors, (38), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-19 06:56:26,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2022-11-19 06:56:26,319 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 7 [2022-11-19 06:56:26,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:56:26,321 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2022-11-19 06:56:26,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-11-19 06:56:26,322 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2022-11-19 06:56:26,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-19 06:56:26,323 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:56:26,323 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2022-11-19 06:56:26,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 06:56:26,324 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [bAndErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bAndErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-19 06:56:26,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:56:26,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1891667327, now seen corresponding path program 1 times [2022-11-19 06:56:26,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:56:26,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884608153] [2022-11-19 06:56:26,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:56:26,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:56:26,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:56:26,511 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:56:26,511 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:56:26,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884608153] [2022-11-19 06:56:26,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884608153] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:56:26,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982287653] [2022-11-19 06:56:26,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:56:26,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:56:26,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89583dc2-da7a-4dd5-9a7b-da6914d6435c/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:56:26,519 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89583dc2-da7a-4dd5-9a7b-da6914d6435c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:56:26,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89583dc2-da7a-4dd5-9a7b-da6914d6435c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 06:56:26,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:56:26,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-19 06:56:26,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:56:26,684 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:56:26,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:56:26,749 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:56:26,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [982287653] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:56:26,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [706942785] [2022-11-19 06:56:26,778 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2022-11-19 06:56:26,778 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:56:26,781 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:56:26,787 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:56:26,787 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:56:26,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:26,898 INFO L321 Elim1Store]: treesize reduction 15, result has 37.5 percent of original size [2022-11-19 06:56:26,899 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 30 [2022-11-19 06:56:26,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:26,938 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-19 06:56:26,939 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-19 06:56:27,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:27,010 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 31 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 112 [2022-11-19 06:56:27,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:27,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:27,109 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 32 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 127 [2022-11-19 06:56:27,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:27,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:27,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:27,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:27,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:27,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:27,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:27,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:27,439 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:56:27,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:27,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:27,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:27,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:27,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:27,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:27,479 INFO L321 Elim1Store]: treesize reduction 107, result has 6.1 percent of original size [2022-11-19 06:56:27,480 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 42 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 22 case distinctions, treesize of input 363 treesize of output 324 [2022-11-19 06:56:27,645 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-19 06:56:27,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:27,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:27,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:27,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:27,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:27,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:27,826 INFO L321 Elim1Store]: treesize reduction 84, result has 28.8 percent of original size [2022-11-19 06:56:27,827 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 34 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 3 case distinctions, treesize of input 184 treesize of output 222 [2022-11-19 06:56:27,903 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:56:28,894 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '377#(and (<= 0 |ULTIMATE.start_main_~i~1#1|) (<= ~N~0 2147483647) (<= 1 ~N~0) (<= |ULTIMATE.start_main_#t~post6#1| 2147483647) (<= |ULTIMATE.start_main_~i~1#1| 2147483647) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (< 2147483646 |ULTIMATE.start_main_#t~post6#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-19 06:56:28,895 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 06:56:28,895 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 06:56:28,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-19 06:56:28,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391207375] [2022-11-19 06:56:28,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 06:56:28,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-19 06:56:28,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:56:28,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-19 06:56:28,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2022-11-19 06:56:28,897 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand has 12 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:56:29,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:56:29,130 INFO L93 Difference]: Finished difference Result 118 states and 136 transitions. [2022-11-19 06:56:29,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-19 06:56:29,131 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-19 06:56:29,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:56:29,133 INFO L225 Difference]: With dead ends: 118 [2022-11-19 06:56:29,133 INFO L226 Difference]: Without dead ends: 117 [2022-11-19 06:56:29,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=129, Invalid=423, Unknown=0, NotChecked=0, Total=552 [2022-11-19 06:56:29,135 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 136 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:56:29,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 252 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:56:29,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-11-19 06:56:29,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 47. [2022-11-19 06:56:29,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 31 states have (on average 1.6451612903225807) internal successors, (51), 43 states have internal predecessors, (51), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-19 06:56:29,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 56 transitions. [2022-11-19 06:56:29,144 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 56 transitions. Word has length 7 [2022-11-19 06:56:29,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:56:29,144 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 56 transitions. [2022-11-19 06:56:29,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:56:29,145 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 56 transitions. [2022-11-19 06:56:29,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-19 06:56:29,145 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:56:29,146 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1] [2022-11-19 06:56:29,161 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89583dc2-da7a-4dd5-9a7b-da6914d6435c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 06:56:29,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89583dc2-da7a-4dd5-9a7b-da6914d6435c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:56:29,352 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [bAndErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bAndErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-19 06:56:29,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:56:29,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1487854926, now seen corresponding path program 1 times [2022-11-19 06:56:29,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:56:29,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251221079] [2022-11-19 06:56:29,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:56:29,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:56:29,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:56:29,433 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:56:29,433 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:56:29,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251221079] [2022-11-19 06:56:29,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251221079] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:56:29,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705074238] [2022-11-19 06:56:29,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:56:29,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:56:29,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89583dc2-da7a-4dd5-9a7b-da6914d6435c/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:56:29,435 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89583dc2-da7a-4dd5-9a7b-da6914d6435c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:56:29,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89583dc2-da7a-4dd5-9a7b-da6914d6435c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 06:56:29,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:56:29,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-19 06:56:29,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:56:29,530 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:56:29,531 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:56:29,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1705074238] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:56:29,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 06:56:29,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-19 06:56:29,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309927476] [2022-11-19 06:56:29,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:56:29,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 06:56:29,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:56:29,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 06:56:29,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-19 06:56:29,534 INFO L87 Difference]: Start difference. First operand 47 states and 56 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:56:29,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:56:29,604 INFO L93 Difference]: Finished difference Result 47 states and 56 transitions. [2022-11-19 06:56:29,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 06:56:29,605 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-19 06:56:29,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:56:29,611 INFO L225 Difference]: With dead ends: 47 [2022-11-19 06:56:29,611 INFO L226 Difference]: Without dead ends: 46 [2022-11-19 06:56:29,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-19 06:56:29,616 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 28 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:56:29,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 76 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:56:29,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-11-19 06:56:29,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2022-11-19 06:56:29,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 42 states have internal predecessors, (48), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-19 06:56:29,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 53 transitions. [2022-11-19 06:56:29,634 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 53 transitions. Word has length 8 [2022-11-19 06:56:29,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:56:29,634 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 53 transitions. [2022-11-19 06:56:29,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:56:29,635 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 53 transitions. [2022-11-19 06:56:29,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-19 06:56:29,635 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:56:29,635 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:56:29,648 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89583dc2-da7a-4dd5-9a7b-da6914d6435c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-19 06:56:29,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89583dc2-da7a-4dd5-9a7b-da6914d6435c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:56:29,845 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting bAndErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [bAndErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bAndErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-19 06:56:29,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:56:29,845 INFO L85 PathProgramCache]: Analyzing trace with hash 400814181, now seen corresponding path program 1 times [2022-11-19 06:56:29,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:56:29,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575671334] [2022-11-19 06:56:29,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:56:29,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:56:29,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:56:29,905 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 06:56:29,905 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:56:29,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575671334] [2022-11-19 06:56:29,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575671334] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:56:29,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:56:29,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:56:29,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193105435] [2022-11-19 06:56:29,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:56:29,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:56:29,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:56:29,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:56:29,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:56:29,908 INFO L87 Difference]: Start difference. First operand 46 states and 53 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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) [2022-11-19 06:56:29,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:56:29,947 INFO L93 Difference]: Finished difference Result 52 states and 61 transitions. [2022-11-19 06:56:29,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 06:56:29,948 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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 10 [2022-11-19 06:56:29,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:56:29,950 INFO L225 Difference]: With dead ends: 52 [2022-11-19 06:56:29,951 INFO L226 Difference]: Without dead ends: 50 [2022-11-19 06:56:29,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:56:29,952 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 4 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:56:29,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 91 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:56:29,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-11-19 06:56:29,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2022-11-19 06:56:29,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 34 states have (on average 1.5294117647058822) internal successors, (52), 45 states have internal predecessors, (52), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-19 06:56:29,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 57 transitions. [2022-11-19 06:56:29,959 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 57 transitions. Word has length 10 [2022-11-19 06:56:29,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:56:29,959 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 57 transitions. [2022-11-19 06:56:29,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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) [2022-11-19 06:56:29,960 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 57 transitions. [2022-11-19 06:56:29,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-19 06:56:29,961 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:56:29,961 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:56:29,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 06:56:29,961 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting bAndErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [bAndErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bAndErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-19 06:56:29,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:56:29,962 INFO L85 PathProgramCache]: Analyzing trace with hash 646242028, now seen corresponding path program 1 times [2022-11-19 06:56:29,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:56:29,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863924656] [2022-11-19 06:56:29,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:56:29,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:56:29,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:56:30,052 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 06:56:30,053 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:56:30,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863924656] [2022-11-19 06:56:30,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863924656] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:56:30,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578099319] [2022-11-19 06:56:30,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:56:30,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:56:30,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89583dc2-da7a-4dd5-9a7b-da6914d6435c/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:56:30,056 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89583dc2-da7a-4dd5-9a7b-da6914d6435c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:56:30,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89583dc2-da7a-4dd5-9a7b-da6914d6435c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 06:56:30,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:56:30,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-19 06:56:30,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:56:30,177 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 06:56:30,177 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:56:30,217 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 06:56:30,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1578099319] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:56:30,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [601506818] [2022-11-19 06:56:30,220 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-11-19 06:56:30,220 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:56:30,220 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:56:30,221 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:56:30,221 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:56:30,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:30,274 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-19 06:56:30,274 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-19 06:56:30,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:30,295 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-11-19 06:56:30,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:30,338 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 31 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 112 [2022-11-19 06:56:30,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:30,408 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 32 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 112 treesize of output 132 [2022-11-19 06:56:30,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:30,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:30,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:30,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:30,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:30,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:30,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:30,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:30,666 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:56:30,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:30,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:30,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:30,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:30,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:30,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:30,678 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:56:30,712 INFO L321 Elim1Store]: treesize reduction 72, result has 24.2 percent of original size [2022-11-19 06:56:30,713 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 35 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 22 case distinctions, treesize of input 347 treesize of output 327 [2022-11-19 06:56:30,958 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-19 06:56:31,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:31,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:31,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:31,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:31,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:31,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:31,199 INFO L321 Elim1Store]: treesize reduction 84, result has 28.8 percent of original size [2022-11-19 06:56:31,200 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 34 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 3 case distinctions, treesize of input 184 treesize of output 222 [2022-11-19 06:56:31,233 INFO L197 IcfgInterpreter]: Interpreting procedure bAnd with input of size 17 for LOIs [2022-11-19 06:56:31,550 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:56:32,977 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '958#(and (<= ~N~0 2147483647) (<= 0 bAnd_~x.offset) (<= 1 bAnd_~i~0) (<= 0 |bAnd_#in~x.base|) (<= |bAnd_#t~post2| 2147483647) (<= 1 ~N~0) (<= 0 bAnd_~x.base) (<= bAnd_~i~0 2147483647) (= |bAnd_#in~x.offset| 0) (= |#NULL.offset| 0) (<= bAnd_~x.offset 0) (< 2147483646 |bAnd_#t~post2|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-19 06:56:32,978 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 06:56:32,978 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 06:56:32,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2022-11-19 06:56:32,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849186978] [2022-11-19 06:56:32,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 06:56:32,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-19 06:56:32,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:56:32,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-19 06:56:32,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=402, Unknown=0, NotChecked=0, Total=462 [2022-11-19 06:56:32,980 INFO L87 Difference]: Start difference. First operand 49 states and 57 transitions. Second operand has 12 states, 12 states have (on average 2.25) internal successors, (27), 12 states have internal predecessors, (27), 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) [2022-11-19 06:56:33,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:56:33,147 INFO L93 Difference]: Finished difference Result 87 states and 103 transitions. [2022-11-19 06:56:33,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-19 06:56:33,148 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.25) internal successors, (27), 12 states have internal predecessors, (27), 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 13 [2022-11-19 06:56:33,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:56:33,149 INFO L225 Difference]: With dead ends: 87 [2022-11-19 06:56:33,149 INFO L226 Difference]: Without dead ends: 55 [2022-11-19 06:56:33,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2022-11-19 06:56:33,151 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 21 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:56:33,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 168 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:56:33,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-11-19 06:56:33,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 51. [2022-11-19 06:56:33,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 36 states have (on average 1.5) internal successors, (54), 47 states have internal predecessors, (54), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-19 06:56:33,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 59 transitions. [2022-11-19 06:56:33,157 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 59 transitions. Word has length 13 [2022-11-19 06:56:33,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:56:33,163 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 59 transitions. [2022-11-19 06:56:33,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.25) internal successors, (27), 12 states have internal predecessors, (27), 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) [2022-11-19 06:56:33,164 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 59 transitions. [2022-11-19 06:56:33,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-19 06:56:33,165 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:56:33,166 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1] [2022-11-19 06:56:33,181 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89583dc2-da7a-4dd5-9a7b-da6914d6435c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-19 06:56:33,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89583dc2-da7a-4dd5-9a7b-da6914d6435c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-19 06:56:33,372 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [bAndErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bAndErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-19 06:56:33,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:56:33,372 INFO L85 PathProgramCache]: Analyzing trace with hash -524975950, now seen corresponding path program 2 times [2022-11-19 06:56:33,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:56:33,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825424282] [2022-11-19 06:56:33,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:56:33,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:56:33,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:56:33,589 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:56:33,590 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:56:33,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825424282] [2022-11-19 06:56:33,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825424282] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:56:33,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336456112] [2022-11-19 06:56:33,590 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 06:56:33,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:56:33,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89583dc2-da7a-4dd5-9a7b-da6914d6435c/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:56:33,592 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89583dc2-da7a-4dd5-9a7b-da6914d6435c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:56:33,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89583dc2-da7a-4dd5-9a7b-da6914d6435c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 06:56:33,653 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-19 06:56:33,653 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:56:33,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 06:56:33,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:56:33,696 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-19 06:56:33,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:56:33,729 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-19 06:56:33,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [336456112] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:56:33,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1591509380] [2022-11-19 06:56:33,737 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2022-11-19 06:56:33,738 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:56:33,738 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:56:33,738 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:56:33,738 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:56:33,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:33,775 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-19 06:56:33,775 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-19 06:56:33,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:33,791 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-11-19 06:56:33,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:33,823 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 31 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 112 [2022-11-19 06:56:33,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:33,896 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 32 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 112 treesize of output 132 [2022-11-19 06:56:34,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:34,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:34,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:34,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:34,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:34,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:34,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:34,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:34,084 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:56:34,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:34,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:34,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:34,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:34,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:34,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:34,093 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:56:34,119 INFO L321 Elim1Store]: treesize reduction 72, result has 24.2 percent of original size [2022-11-19 06:56:34,119 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 35 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 22 case distinctions, treesize of input 347 treesize of output 327 [2022-11-19 06:56:34,348 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-19 06:56:34,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:34,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:34,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:34,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:34,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:34,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:34,493 INFO L321 Elim1Store]: treesize reduction 84, result has 28.8 percent of original size [2022-11-19 06:56:34,493 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 34 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 3 case distinctions, treesize of input 184 treesize of output 222 [2022-11-19 06:56:34,555 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:56:35,431 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1249#(and (<= 0 |ULTIMATE.start_main_~i~1#1|) (<= ~N~0 2147483647) (<= 1 ~N~0) (<= |ULTIMATE.start_main_#t~post6#1| 2147483647) (<= |ULTIMATE.start_main_~i~1#1| 2147483647) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (< 2147483646 |ULTIMATE.start_main_#t~post6#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-19 06:56:35,432 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 06:56:35,432 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 06:56:35,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 2, 2] total 13 [2022-11-19 06:56:35,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81339788] [2022-11-19 06:56:35,433 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 06:56:35,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-19 06:56:35,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:56:35,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-19 06:56:35,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2022-11-19 06:56:35,434 INFO L87 Difference]: Start difference. First operand 51 states and 59 transitions. Second operand has 14 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 14 states have internal predecessors, (23), 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) [2022-11-19 06:56:35,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:56:35,791 INFO L93 Difference]: Finished difference Result 115 states and 140 transitions. [2022-11-19 06:56:35,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-19 06:56:35,792 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 14 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-19 06:56:35,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:56:35,793 INFO L225 Difference]: With dead ends: 115 [2022-11-19 06:56:35,793 INFO L226 Difference]: Without dead ends: 112 [2022-11-19 06:56:35,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=194, Invalid=676, Unknown=0, NotChecked=0, Total=870 [2022-11-19 06:56:35,794 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 144 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 06:56:35,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 120 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 06:56:35,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-11-19 06:56:35,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 41. [2022-11-19 06:56:35,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 29 states have (on average 1.4482758620689655) internal successors, (42), 37 states have internal predecessors, (42), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-19 06:56:35,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2022-11-19 06:56:35,810 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 16 [2022-11-19 06:56:35,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:56:35,810 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2022-11-19 06:56:35,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 14 states have internal predecessors, (23), 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) [2022-11-19 06:56:35,811 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2022-11-19 06:56:35,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-19 06:56:35,812 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:56:35,812 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:56:35,816 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89583dc2-da7a-4dd5-9a7b-da6914d6435c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-19 06:56:36,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89583dc2-da7a-4dd5-9a7b-da6914d6435c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:56:36,015 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting bAndErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [bAndErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bAndErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-19 06:56:36,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:56:36,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1694992665, now seen corresponding path program 1 times [2022-11-19 06:56:36,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:56:36,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162230763] [2022-11-19 06:56:36,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:56:36,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:56:36,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:56:36,089 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-19 06:56:36,089 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:56:36,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162230763] [2022-11-19 06:56:36,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162230763] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:56:36,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122908060] [2022-11-19 06:56:36,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:56:36,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:56:36,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89583dc2-da7a-4dd5-9a7b-da6914d6435c/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:56:36,091 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89583dc2-da7a-4dd5-9a7b-da6914d6435c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:56:36,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89583dc2-da7a-4dd5-9a7b-da6914d6435c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-19 06:56:36,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:56:36,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-19 06:56:36,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:56:36,287 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:56:36,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:56:36,391 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:56:36,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1122908060] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:56:36,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [12997791] [2022-11-19 06:56:36,393 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-11-19 06:56:36,393 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:56:36,394 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:56:36,394 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:56:36,394 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:56:36,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:36,430 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-19 06:56:36,431 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-19 06:56:36,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:36,443 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-11-19 06:56:36,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:36,469 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 31 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 112 [2022-11-19 06:56:36,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:36,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:36,519 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 32 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 127 [2022-11-19 06:56:36,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:36,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:36,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:36,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:36,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:36,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:36,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:36,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:36,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:36,692 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:56:36,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:36,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:36,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:36,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:36,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:36,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:36,701 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:56:36,734 INFO L321 Elim1Store]: treesize reduction 72, result has 24.2 percent of original size [2022-11-19 06:56:36,735 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 36 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 22 case distinctions, treesize of input 347 treesize of output 327 [2022-11-19 06:56:36,925 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-19 06:56:37,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:37,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:37,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:37,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:37,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:37,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:37,091 INFO L321 Elim1Store]: treesize reduction 84, result has 28.8 percent of original size [2022-11-19 06:56:37,092 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 34 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 3 case distinctions, treesize of input 184 treesize of output 222 [2022-11-19 06:56:37,125 INFO L197 IcfgInterpreter]: Interpreting procedure bAnd with input of size 17 for LOIs [2022-11-19 06:56:37,354 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:56:38,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [12997791] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:56:38,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-19 06:56:38,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [5, 11, 11] total 27 [2022-11-19 06:56:38,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167304507] [2022-11-19 06:56:38,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:56:38,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-19 06:56:38,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:56:38,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-19 06:56:38,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=630, Unknown=0, NotChecked=0, Total=702 [2022-11-19 06:56:38,830 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand has 11 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 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) [2022-11-19 06:56:39,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:56:39,350 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2022-11-19 06:56:39,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-19 06:56:39,350 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 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 17 [2022-11-19 06:56:39,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:56:39,351 INFO L225 Difference]: With dead ends: 41 [2022-11-19 06:56:39,351 INFO L226 Difference]: Without dead ends: 38 [2022-11-19 06:56:39,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 23 SyntacticMatches, 6 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=76, Invalid=680, Unknown=0, NotChecked=0, Total=756 [2022-11-19 06:56:39,352 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 42 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 06:56:39,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 38 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 06:56:39,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-11-19 06:56:39,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2022-11-19 06:56:39,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 29 states have (on average 1.3448275862068966) internal successors, (39), 34 states have internal predecessors, (39), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-19 06:56:39,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2022-11-19 06:56:39,365 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 17 [2022-11-19 06:56:39,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:56:39,366 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2022-11-19 06:56:39,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 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) [2022-11-19 06:56:39,366 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2022-11-19 06:56:39,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-19 06:56:39,367 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:56:39,367 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-19 06:56:39,375 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89583dc2-da7a-4dd5-9a7b-da6914d6435c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-19 06:56:39,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89583dc2-da7a-4dd5-9a7b-da6914d6435c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:56:39,573 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting bAndErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [bAndErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bAndErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-19 06:56:39,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:56:39,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1095350802, now seen corresponding path program 2 times [2022-11-19 06:56:39,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:56:39,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825882745] [2022-11-19 06:56:39,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:56:39,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:56:39,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:56:39,752 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:56:39,753 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:56:39,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825882745] [2022-11-19 06:56:39,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825882745] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:56:39,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705145481] [2022-11-19 06:56:39,753 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 06:56:39,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:56:39,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89583dc2-da7a-4dd5-9a7b-da6914d6435c/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:56:39,756 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89583dc2-da7a-4dd5-9a7b-da6914d6435c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:56:39,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89583dc2-da7a-4dd5-9a7b-da6914d6435c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-19 06:56:39,824 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-19 06:56:39,824 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:56:39,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 06:56:39,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:56:39,880 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-19 06:56:39,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:56:39,919 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-19 06:56:39,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1705145481] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:56:39,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [531537691] [2022-11-19 06:56:39,923 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-11-19 06:56:39,923 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:56:39,923 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:56:39,923 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:56:39,924 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:56:39,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:39,960 INFO L321 Elim1Store]: treesize reduction 15, result has 37.5 percent of original size [2022-11-19 06:56:39,965 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 30 [2022-11-19 06:56:39,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:39,995 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-19 06:56:39,995 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-19 06:56:40,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:40,027 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 31 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 112 [2022-11-19 06:56:40,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:40,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:40,084 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 32 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 127 [2022-11-19 06:56:40,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:40,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:40,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:40,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:40,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:40,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:40,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:40,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:40,285 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:56:40,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:40,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:40,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:40,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:40,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:40,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:40,318 INFO L321 Elim1Store]: treesize reduction 107, result has 6.1 percent of original size [2022-11-19 06:56:40,319 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 42 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 22 case distinctions, treesize of input 353 treesize of output 324 [2022-11-19 06:56:40,407 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-19 06:56:40,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:40,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:40,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:40,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:40,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:40,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:40,571 INFO L321 Elim1Store]: treesize reduction 84, result has 28.8 percent of original size [2022-11-19 06:56:40,571 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 34 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 3 case distinctions, treesize of input 184 treesize of output 222 [2022-11-19 06:56:40,602 INFO L197 IcfgInterpreter]: Interpreting procedure bAnd with input of size 17 for LOIs [2022-11-19 06:56:40,856 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:56:42,116 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1818#(and (<= ~N~0 2147483647) (<= 0 bAnd_~x.offset) (<= 1 bAnd_~i~0) (<= 0 |bAnd_#in~x.base|) (<= |bAnd_#t~post2| 2147483647) (<= 1 ~N~0) (<= 0 bAnd_~x.base) (<= bAnd_~i~0 2147483647) (= |bAnd_#in~x.offset| 0) (= |#NULL.offset| 0) (<= bAnd_~x.offset 0) (< 2147483646 |bAnd_#t~post2|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-19 06:56:42,116 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 06:56:42,116 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 06:56:42,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 2, 2] total 15 [2022-11-19 06:56:42,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160892057] [2022-11-19 06:56:42,117 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 06:56:42,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-19 06:56:42,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:56:42,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-19 06:56:42,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2022-11-19 06:56:42,119 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 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) [2022-11-19 06:56:42,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:56:42,457 INFO L93 Difference]: Finished difference Result 95 states and 114 transitions. [2022-11-19 06:56:42,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-19 06:56:42,457 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 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 19 [2022-11-19 06:56:42,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:56:42,458 INFO L225 Difference]: With dead ends: 95 [2022-11-19 06:56:42,458 INFO L226 Difference]: Without dead ends: 61 [2022-11-19 06:56:42,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=154, Invalid=1106, Unknown=0, NotChecked=0, Total=1260 [2022-11-19 06:56:42,460 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 71 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 06:56:42,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 139 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 06:56:42,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-11-19 06:56:42,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 41. [2022-11-19 06:56:42,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 35 states have internal predecessors, (39), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-19 06:56:42,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2022-11-19 06:56:42,470 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 19 [2022-11-19 06:56:42,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:56:42,471 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2022-11-19 06:56:42,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 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) [2022-11-19 06:56:42,471 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2022-11-19 06:56:42,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-19 06:56:42,472 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:56:42,472 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:56:42,479 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89583dc2-da7a-4dd5-9a7b-da6914d6435c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-19 06:56:42,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89583dc2-da7a-4dd5-9a7b-da6914d6435c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-19 06:56:42,677 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [bAndErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bAndErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-19 06:56:42,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:56:42,677 INFO L85 PathProgramCache]: Analyzing trace with hash 417384871, now seen corresponding path program 1 times [2022-11-19 06:56:42,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:56:42,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771187775] [2022-11-19 06:56:42,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:56:42,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:56:42,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:56:42,777 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-19 06:56:42,777 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:56:42,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771187775] [2022-11-19 06:56:42,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771187775] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:56:42,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528629607] [2022-11-19 06:56:42,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:56:42,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:56:42,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89583dc2-da7a-4dd5-9a7b-da6914d6435c/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:56:42,779 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89583dc2-da7a-4dd5-9a7b-da6914d6435c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:56:42,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89583dc2-da7a-4dd5-9a7b-da6914d6435c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-19 06:56:42,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:56:42,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 06:56:42,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:56:42,874 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-19 06:56:42,874 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:56:42,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [528629607] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:56:42,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 06:56:42,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-19 06:56:42,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210920391] [2022-11-19 06:56:42,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:56:42,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:56:42,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:56:42,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:56:42,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-19 06:56:42,881 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-19 06:56:42,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:56:42,909 INFO L93 Difference]: Finished difference Result 51 states and 58 transitions. [2022-11-19 06:56:42,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:56:42,910 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2022-11-19 06:56:42,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:56:42,910 INFO L225 Difference]: With dead ends: 51 [2022-11-19 06:56:42,911 INFO L226 Difference]: Without dead ends: 50 [2022-11-19 06:56:42,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-19 06:56:42,913 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 6 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:56:42,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 35 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:56:42,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-11-19 06:56:42,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 45. [2022-11-19 06:56:42,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 35 states have (on average 1.2285714285714286) internal successors, (43), 39 states have internal predecessors, (43), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-19 06:56:42,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2022-11-19 06:56:42,929 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 23 [2022-11-19 06:56:42,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:56:42,930 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2022-11-19 06:56:42,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-19 06:56:42,930 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2022-11-19 06:56:42,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-19 06:56:42,936 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:56:42,936 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:56:42,942 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89583dc2-da7a-4dd5-9a7b-da6914d6435c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-19 06:56:43,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89583dc2-da7a-4dd5-9a7b-da6914d6435c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-19 06:56:43,142 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [bAndErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bAndErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-19 06:56:43,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:56:43,143 INFO L85 PathProgramCache]: Analyzing trace with hash 54029217, now seen corresponding path program 1 times [2022-11-19 06:56:43,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:56:43,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154058622] [2022-11-19 06:56:43,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:56:43,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:56:43,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:56:43,203 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-19 06:56:43,203 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:56:43,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154058622] [2022-11-19 06:56:43,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154058622] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:56:43,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672805749] [2022-11-19 06:56:43,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:56:43,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:56:43,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89583dc2-da7a-4dd5-9a7b-da6914d6435c/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:56:43,205 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89583dc2-da7a-4dd5-9a7b-da6914d6435c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:56:43,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89583dc2-da7a-4dd5-9a7b-da6914d6435c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-19 06:56:43,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:56:43,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 06:56:43,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:56:43,301 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-19 06:56:43,301 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:56:43,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672805749] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:56:43,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 06:56:43,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-19 06:56:43,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977471735] [2022-11-19 06:56:43,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:56:43,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:56:43,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:56:43,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:56:43,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-19 06:56:43,303 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-19 06:56:43,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:56:43,328 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2022-11-19 06:56:43,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:56:43,329 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2022-11-19 06:56:43,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:56:43,330 INFO L225 Difference]: With dead ends: 51 [2022-11-19 06:56:43,330 INFO L226 Difference]: Without dead ends: 50 [2022-11-19 06:56:43,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-19 06:56:43,331 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 4 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:56:43,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 36 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:56:43,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-11-19 06:56:43,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 46. [2022-11-19 06:56:43,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 36 states have (on average 1.2222222222222223) internal successors, (44), 40 states have internal predecessors, (44), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-19 06:56:43,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 52 transitions. [2022-11-19 06:56:43,341 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 52 transitions. Word has length 24 [2022-11-19 06:56:43,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:56:43,341 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 52 transitions. [2022-11-19 06:56:43,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-19 06:56:43,342 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 52 transitions. [2022-11-19 06:56:43,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-19 06:56:43,343 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:56:43,343 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:56:43,351 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89583dc2-da7a-4dd5-9a7b-da6914d6435c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-19 06:56:43,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89583dc2-da7a-4dd5-9a7b-da6914d6435c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:56:43,551 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [bAndErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bAndErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-19 06:56:43,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:56:43,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1674906951, now seen corresponding path program 1 times [2022-11-19 06:56:43,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:56:43,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673453098] [2022-11-19 06:56:43,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:56:43,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:56:43,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:56:43,603 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-19 06:56:43,603 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:56:43,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673453098] [2022-11-19 06:56:43,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673453098] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:56:43,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802377117] [2022-11-19 06:56:43,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:56:43,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:56:43,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89583dc2-da7a-4dd5-9a7b-da6914d6435c/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:56:43,605 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89583dc2-da7a-4dd5-9a7b-da6914d6435c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:56:43,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89583dc2-da7a-4dd5-9a7b-da6914d6435c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-19 06:56:43,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:56:43,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 06:56:43,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:56:43,710 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-19 06:56:43,710 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:56:43,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [802377117] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:56:43,710 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 06:56:43,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2022-11-19 06:56:43,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992604878] [2022-11-19 06:56:43,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:56:43,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:56:43,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:56:43,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:56:43,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-19 06:56:43,712 INFO L87 Difference]: Start difference. First operand 46 states and 52 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-19 06:56:43,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:56:43,750 INFO L93 Difference]: Finished difference Result 81 states and 94 transitions. [2022-11-19 06:56:43,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 06:56:43,750 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 25 [2022-11-19 06:56:43,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:56:43,751 INFO L225 Difference]: With dead ends: 81 [2022-11-19 06:56:43,751 INFO L226 Difference]: Without dead ends: 49 [2022-11-19 06:56:43,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-19 06:56:43,752 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 26 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:56:43,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 31 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:56:43,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-11-19 06:56:43,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 47. [2022-11-19 06:56:43,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 37 states have (on average 1.1891891891891893) internal successors, (44), 41 states have internal predecessors, (44), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-19 06:56:43,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 52 transitions. [2022-11-19 06:56:43,763 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 52 transitions. Word has length 25 [2022-11-19 06:56:43,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:56:43,764 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 52 transitions. [2022-11-19 06:56:43,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-19 06:56:43,764 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 52 transitions. [2022-11-19 06:56:43,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-19 06:56:43,765 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:56:43,765 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:56:43,778 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89583dc2-da7a-4dd5-9a7b-da6914d6435c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-19 06:56:43,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89583dc2-da7a-4dd5-9a7b-da6914d6435c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:56:43,971 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [bAndErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bAndErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-19 06:56:43,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:56:43,971 INFO L85 PathProgramCache]: Analyzing trace with hash 124777251, now seen corresponding path program 1 times [2022-11-19 06:56:43,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:56:43,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065809314] [2022-11-19 06:56:43,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:56:43,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:56:43,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:56:44,060 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-19 06:56:44,061 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:56:44,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065809314] [2022-11-19 06:56:44,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065809314] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:56:44,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:56:44,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:56:44,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29173702] [2022-11-19 06:56:44,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:56:44,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:56:44,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:56:44,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:56:44,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:56:44,064 INFO L87 Difference]: Start difference. First operand 47 states and 52 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-19 06:56:44,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:56:44,104 INFO L93 Difference]: Finished difference Result 51 states and 56 transitions. [2022-11-19 06:56:44,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 06:56:44,104 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 31 [2022-11-19 06:56:44,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:56:44,105 INFO L225 Difference]: With dead ends: 51 [2022-11-19 06:56:44,106 INFO L226 Difference]: Without dead ends: 49 [2022-11-19 06:56:44,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:56:44,107 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 3 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:56:44,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 50 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:56:44,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-11-19 06:56:44,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2022-11-19 06:56:44,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 39 states have (on average 1.1794871794871795) internal successors, (46), 43 states have internal predecessors, (46), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-19 06:56:44,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 54 transitions. [2022-11-19 06:56:44,119 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 54 transitions. Word has length 31 [2022-11-19 06:56:44,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:56:44,120 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 54 transitions. [2022-11-19 06:56:44,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-19 06:56:44,120 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions. [2022-11-19 06:56:44,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-19 06:56:44,123 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:56:44,123 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:56:44,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-19 06:56:44,125 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [bAndErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bAndErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-19 06:56:44,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:56:44,126 INFO L85 PathProgramCache]: Analyzing trace with hash 830692303, now seen corresponding path program 1 times [2022-11-19 06:56:44,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:56:44,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287226787] [2022-11-19 06:56:44,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:56:44,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:56:44,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:56:44,252 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-19 06:56:44,253 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:56:44,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287226787] [2022-11-19 06:56:44,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287226787] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:56:44,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132364583] [2022-11-19 06:56:44,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:56:44,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:56:44,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89583dc2-da7a-4dd5-9a7b-da6914d6435c/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:56:44,255 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89583dc2-da7a-4dd5-9a7b-da6914d6435c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:56:44,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89583dc2-da7a-4dd5-9a7b-da6914d6435c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-19 06:56:44,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:56:44,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 06:56:44,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:56:44,367 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-19 06:56:44,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:56:44,417 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-19 06:56:44,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [132364583] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:56:44,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [901010382] [2022-11-19 06:56:44,420 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2022-11-19 06:56:44,420 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:56:44,421 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:56:44,421 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:56:44,421 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:56:44,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:44,465 INFO L321 Elim1Store]: treesize reduction 15, result has 37.5 percent of original size [2022-11-19 06:56:44,466 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 30 [2022-11-19 06:56:44,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:44,492 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-19 06:56:44,492 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-19 06:56:44,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:44,537 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 31 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 112 [2022-11-19 06:56:44,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:44,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:44,592 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 32 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 127 [2022-11-19 06:56:44,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:44,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:44,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:44,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:44,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:44,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:44,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:44,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:44,764 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:56:44,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:44,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:44,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:44,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:44,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:44,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:44,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:44,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:44,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:44,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:44,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:44,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:44,783 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:56:44,826 INFO L321 Elim1Store]: treesize reduction 145, result has 11.0 percent of original size [2022-11-19 06:56:44,826 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 42 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 34 case distinctions, treesize of input 357 treesize of output 334 [2022-11-19 06:56:44,980 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-19 06:56:45,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:45,403 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-11-19 06:56:45,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 06:56:45,536 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 06:56:45,536 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2022-11-19 06:56:45,628 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-11-19 06:56:45,677 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-11-19 06:56:45,712 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-11-19 06:56:45,736 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-19 06:56:45,747 INFO L197 IcfgInterpreter]: Interpreting procedure bAnd with input of size 17 for LOIs [2022-11-19 06:56:45,963 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:56:47,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [901010382] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:56:47,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-19 06:56:47,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [4, 4, 4] total 25 [2022-11-19 06:56:47,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883037288] [2022-11-19 06:56:47,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:56:47,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-19 06:56:47,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:56:47,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-19 06:56:47,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=558, Unknown=0, NotChecked=0, Total=650 [2022-11-19 06:56:47,765 INFO L87 Difference]: Start difference. First operand 49 states and 54 transitions. Second operand has 18 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-19 06:56:48,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:56:48,575 INFO L93 Difference]: Finished difference Result 49 states and 54 transitions. [2022-11-19 06:56:48,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-19 06:56:48,576 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 36 [2022-11-19 06:56:48,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:56:48,576 INFO L225 Difference]: With dead ends: 49 [2022-11-19 06:56:48,577 INFO L226 Difference]: Without dead ends: 0 [2022-11-19 06:56:48,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 83 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=116, Invalid=754, Unknown=0, NotChecked=0, Total=870 [2022-11-19 06:56:48,578 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 24 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 06:56:48,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 2 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 211 Invalid, 0 Unknown, 2 Unchecked, 0.2s Time] [2022-11-19 06:56:48,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-19 06:56:48,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-19 06:56:48,580 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) [2022-11-19 06:56:48,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-19 06:56:48,580 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2022-11-19 06:56:48,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:56:48,580 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-19 06:56:48,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-19 06:56:48,581 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-19 06:56:48,581 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-19 06:56:48,584 INFO L805 garLoopResultBuilder]: Registering result SAFE for location bAndErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 12 remaining) [2022-11-19 06:56:48,584 INFO L805 garLoopResultBuilder]: Registering result SAFE for location bAndErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 12 remaining) [2022-11-19 06:56:48,584 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 12 remaining) [2022-11-19 06:56:48,585 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 12 remaining) [2022-11-19 06:56:48,585 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 12 remaining) [2022-11-19 06:56:48,585 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 12 remaining) [2022-11-19 06:56:48,585 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 12 remaining) [2022-11-19 06:56:48,586 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 12 remaining) [2022-11-19 06:56:48,586 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 12 remaining) [2022-11-19 06:56:48,586 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 12 remaining) [2022-11-19 06:56:48,586 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 12 remaining) [2022-11-19 06:56:48,587 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 12 remaining) [2022-11-19 06:56:48,599 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89583dc2-da7a-4dd5-9a7b-da6914d6435c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-19 06:56:48,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89583dc2-da7a-4dd5-9a7b-da6914d6435c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-19 06:56:48,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-19 06:56:49,946 INFO L899 garLoopResultBuilder]: For program point bAndErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2022-11-19 06:56:49,946 INFO L899 garLoopResultBuilder]: For program point bAndEXIT(lines 19 28) no Hoare annotation was computed. [2022-11-19 06:56:49,946 INFO L899 garLoopResultBuilder]: For program point bAndErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2022-11-19 06:56:49,946 INFO L902 garLoopResultBuilder]: At program point bAndENTRY(lines 19 28) the Hoare annotation is: true [2022-11-19 06:56:49,946 INFO L899 garLoopResultBuilder]: For program point L24-3(line 24) no Hoare annotation was computed. [2022-11-19 06:56:49,947 INFO L899 garLoopResultBuilder]: For program point L24-4(line 24) no Hoare annotation was computed. [2022-11-19 06:56:49,947 INFO L895 garLoopResultBuilder]: At program point L24-5(lines 24 26) the Hoare annotation is: (let ((.cse0 (not (= |bAnd_#in~x.offset| 0))) (.cse1 (not (= |#NULL.offset| 0))) (.cse2 (not (<= 1 ~N~0))) (.cse3 (not (= |#NULL.base| 0))) (.cse4 (not (<= 0 |#StackHeapBarrier|))) (.cse5 (not (<= 0 |bAnd_#in~x.base|)))) (and (or .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (and (<= 0 bAnd_~x.offset) (<= 1 bAnd_~i~0) (<= 0 bAnd_~x.base) (<= bAnd_~x.offset 0) (or (and (= bAnd_~x.base |bAnd_#in~x.base|) (= bAnd_~res~0 (select (select |#memory_int| bAnd_~x.base) bAnd_~x.offset))) (<= 2 bAnd_~i~0))) (not (<= ~N~0 2147483647))) (or .cse0 .cse1 (not (<= ~N~0 2)) .cse2 .cse3 (<= bAnd_~i~0 2) .cse4 .cse5))) [2022-11-19 06:56:49,947 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 50) no Hoare annotation was computed. [2022-11-19 06:56:49,947 INFO L895 garLoopResultBuilder]: At program point L48(line 48) the Hoare annotation is: (and (<= ~N~0 2147483647) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 2 ~N~0) (<= ~N~0 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 (+ |ULTIMATE.start_main_~ret~0#1| 2147483648)) (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 4 |ULTIMATE.start_main_~#x~0#1.offset|)) |ULTIMATE.start_main_~temp~0#1|) (<= |ULTIMATE.start_main_~ret~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0)) [2022-11-19 06:56:49,947 INFO L899 garLoopResultBuilder]: For program point L48-1(line 48) no Hoare annotation was computed. [2022-11-19 06:56:49,948 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW(line 50) no Hoare annotation was computed. [2022-11-19 06:56:49,948 INFO L899 garLoopResultBuilder]: For program point L40-3(line 40) no Hoare annotation was computed. [2022-11-19 06:56:49,948 INFO L899 garLoopResultBuilder]: For program point L40-4(line 40) no Hoare annotation was computed. [2022-11-19 06:56:49,948 INFO L895 garLoopResultBuilder]: At program point L40-5(lines 40 43) the Hoare annotation is: (let ((.cse0 (<= ~N~0 2147483647)) (.cse1 (<= 0 |ULTIMATE.start_main_~#x~0#1.offset|)) (.cse2 (<= |#NULL.offset| 0)) (.cse3 (<= 2 ~N~0)) (.cse4 (<= 0 |#NULL.offset|)) (.cse5 (<= |ULTIMATE.start_main_~#x~0#1.offset| 0)) (.cse6 (= |#NULL.base| 0))) (or (and .cse0 .cse1 .cse2 (<= 1 |ULTIMATE.start_main_~i~1#1|) .cse3 (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) .cse4 .cse5 (<= 0 |#StackHeapBarrier|) .cse6) (let ((.cse8 (select |#memory_int| 1)) (.cse7 (select |#memory_int| 2))) (and (not (= 2 |ULTIMATE.start_main_~#x~0#1.base|)) (= (select .cse7 7) 0) .cse0 (= 53 (select .cse7 4)) .cse1 (= |ULTIMATE.start_main_~i~1#1| 0) (= (select .cse7 6) 99) (= 2 (select |#length| 1)) (= 65 (select .cse7 1)) (= 100 (select .cse7 3)) (= (select |#valid| |ULTIMATE.start_main_~#x~0#1.base|) 1) .cse2 (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) .cse3 (= (select .cse7 5) 46) (= (select |#valid| 2) 1) (= (select |#length| |ULTIMATE.start_main_~#x~0#1.base|) (* (mod ~N~0 1073741824) 4)) (= 8 (select |#length| 2)) (= 110 (select .cse7 2)) (= (select .cse8 0) 48) (< |#StackHeapBarrier| |ULTIMATE.start_main_~#x~0#1.base|) .cse4 .cse5 (= (select .cse8 1) 0) (= 98 (select .cse7 0)) (< 0 |#StackHeapBarrier|) .cse6)))) [2022-11-19 06:56:49,949 INFO L895 garLoopResultBuilder]: At program point L40-6(lines 40 43) the Hoare annotation is: (and (<= 0 |#NULL.base|) (<= ~N~0 2147483647) (<= 0 |ULTIMATE.start_main_~#x~0#1.offset|) (<= |#NULL.offset| 0) (<= |#NULL.base| 0) (<= 2 ~N~0) (<= ~N~0 |ULTIMATE.start_main_~i~1#1|) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 |#StackHeapBarrier|)) [2022-11-19 06:56:49,949 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 40) no Hoare annotation was computed. [2022-11-19 06:56:49,949 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-19 06:56:49,949 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 51) no Hoare annotation was computed. [2022-11-19 06:56:49,949 INFO L899 garLoopResultBuilder]: For program point L53(line 53) no Hoare annotation was computed. [2022-11-19 06:56:49,949 INFO L899 garLoopResultBuilder]: For program point L45(line 45) no Hoare annotation was computed. [2022-11-19 06:56:49,949 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW(line 53) no Hoare annotation was computed. [2022-11-19 06:56:49,950 INFO L899 garLoopResultBuilder]: For program point L33(lines 33 59) no Hoare annotation was computed. [2022-11-19 06:56:49,950 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 40) no Hoare annotation was computed. [2022-11-19 06:56:49,950 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-19 06:56:49,950 INFO L902 garLoopResultBuilder]: At program point L33-2(lines 33 59) the Hoare annotation is: true [2022-11-19 06:56:49,950 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 51) no Hoare annotation was computed. [2022-11-19 06:56:49,950 INFO L895 garLoopResultBuilder]: At program point L54(line 54) the Hoare annotation is: (and (<= 0 |#NULL.base|) (<= ~N~0 2147483647) (<= 0 |ULTIMATE.start_main_~#x~0#1.offset|) (<= 1 ~N~0) (<= |#NULL.offset| 0) (<= |#NULL.base| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (not (< |ULTIMATE.start_main_~i~1#1| ~N~0)) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 |#StackHeapBarrier|)) [2022-11-19 06:56:49,951 INFO L899 garLoopResultBuilder]: For program point L54-1(line 54) no Hoare annotation was computed. [2022-11-19 06:56:49,951 INFO L899 garLoopResultBuilder]: For program point L50-1(line 50) no Hoare annotation was computed. [2022-11-19 06:56:49,951 INFO L899 garLoopResultBuilder]: For program point L50-2(lines 50 52) no Hoare annotation was computed. [2022-11-19 06:56:49,951 INFO L899 garLoopResultBuilder]: For program point L50-5(line 50) no Hoare annotation was computed. [2022-11-19 06:56:49,951 INFO L899 garLoopResultBuilder]: For program point L50-6(line 50) no Hoare annotation was computed. [2022-11-19 06:56:49,951 INFO L895 garLoopResultBuilder]: At program point L50-7(lines 50 52) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (<= ~N~0 2147483647) (<= 0 |ULTIMATE.start_main_~#x~0#1.offset|) (<= 0 |ULTIMATE.start_main_~i~2#1|) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (<= 2 ~N~0) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 (+ |ULTIMATE.start_main_~ret~0#1| 2147483648)) (not (< |ULTIMATE.start_main_~i~1#1| ~N~0)) (<= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= |ULTIMATE.start_main_~ret~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0)) [2022-11-19 06:56:49,952 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW(line 53) no Hoare annotation was computed. [2022-11-19 06:56:49,952 INFO L899 garLoopResultBuilder]: For program point L50-8(lines 50 52) no Hoare annotation was computed. [2022-11-19 06:56:49,952 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 50) no Hoare annotation was computed. [2022-11-19 06:56:49,952 INFO L899 garLoopResultBuilder]: For program point L51(line 51) no Hoare annotation was computed. [2022-11-19 06:56:49,952 INFO L899 garLoopResultBuilder]: For program point L51-1(line 51) no Hoare annotation was computed. [2022-11-19 06:56:49,952 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW(line 50) no Hoare annotation was computed. [2022-11-19 06:56:49,955 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:56:49,957 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 06:56:49,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 06:56:49 BoogieIcfgContainer [2022-11-19 06:56:49,978 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 06:56:49,979 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 06:56:49,979 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 06:56:49,979 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 06:56:49,980 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:56:25" (3/4) ... [2022-11-19 06:56:49,983 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-19 06:56:49,989 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure bAnd [2022-11-19 06:56:49,994 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 32 nodes and edges [2022-11-19 06:56:49,994 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2022-11-19 06:56:49,995 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-19 06:56:49,995 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-19 06:56:49,995 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-19 06:56:50,037 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89583dc2-da7a-4dd5-9a7b-da6914d6435c/bin/utaipan-I9t0OCRTmS/witness.graphml [2022-11-19 06:56:50,037 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 06:56:50,038 INFO L158 Benchmark]: Toolchain (without parser) took 25599.20ms. Allocated memory was 144.7MB in the beginning and 362.8MB in the end (delta: 218.1MB). Free memory was 113.8MB in the beginning and 197.1MB in the end (delta: -83.3MB). Peak memory consumption was 133.3MB. Max. memory is 16.1GB. [2022-11-19 06:56:50,038 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 86.0MB. Free memory was 43.3MB in the beginning and 43.3MB in the end (delta: 40.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 06:56:50,038 INFO L158 Benchmark]: CACSL2BoogieTranslator took 323.06ms. Allocated memory is still 144.7MB. Free memory was 113.5MB in the beginning and 121.7MB in the end (delta: -8.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-19 06:56:50,039 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.67ms. Allocated memory is still 144.7MB. Free memory was 121.7MB in the beginning and 119.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 06:56:50,039 INFO L158 Benchmark]: Boogie Preprocessor took 29.96ms. Allocated memory is still 144.7MB. Free memory was 119.9MB in the beginning and 118.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 06:56:50,039 INFO L158 Benchmark]: RCFGBuilder took 613.19ms. Allocated memory is still 144.7MB. Free memory was 118.5MB in the beginning and 101.1MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-19 06:56:50,040 INFO L158 Benchmark]: TraceAbstraction took 24527.01ms. Allocated memory was 144.7MB in the beginning and 362.8MB in the end (delta: 218.1MB). Free memory was 100.4MB in the beginning and 200.3MB in the end (delta: -99.9MB). Peak memory consumption was 119.6MB. Max. memory is 16.1GB. [2022-11-19 06:56:50,040 INFO L158 Benchmark]: Witness Printer took 58.19ms. Allocated memory is still 362.8MB. Free memory was 200.3MB in the beginning and 197.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 06:56:50,042 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 86.0MB. Free memory was 43.3MB in the beginning and 43.3MB in the end (delta: 40.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 323.06ms. Allocated memory is still 144.7MB. Free memory was 113.5MB in the beginning and 121.7MB in the end (delta: -8.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.67ms. Allocated memory is still 144.7MB. Free memory was 121.7MB in the beginning and 119.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.96ms. Allocated memory is still 144.7MB. Free memory was 119.9MB in the beginning and 118.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 613.19ms. Allocated memory is still 144.7MB. Free memory was 118.5MB in the beginning and 101.1MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 24527.01ms. Allocated memory was 144.7MB in the beginning and 362.8MB in the end (delta: 218.1MB). Free memory was 100.4MB in the beginning and 200.3MB in the end (delta: -99.9MB). Peak memory consumption was 119.6MB. Max. memory is 16.1GB. * Witness Printer took 58.19ms. Allocated memory is still 362.8MB. Free memory was 200.3MB in the beginning and 197.1MB in the end (delta: 3.1MB). 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: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 40]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 40]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 51]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 51]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 53]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 53]: 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, 39 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 24.4s, OverallIterations: 14, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 553 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 537 mSDsluCounter, 1200 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 2 IncrementalHoareTripleChecker+Unchecked, 881 mSDsCounter, 85 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1152 IncrementalHoareTripleChecker+Invalid, 1239 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 85 mSolverCounterUnsat, 319 mSDtfsCounter, 1152 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 505 GetRequests, 302 SyntacticMatches, 12 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1128 ImplicationChecksByTransitivity, 9.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred in iteration=6, InterpolantAutomatonStates: 114, 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, 14 MinimizatonAttempts, 199 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 40 PreInvPairs, 63 NumberOfFragments, 427 HoareAnnotationTreeSize, 40 FomulaSimplifications, 599 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 8 FomulaSimplificationsInter, 2910 FormulaSimplificationTreeSizeReductionInter, 1.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 428 NumberOfCodeBlocks, 404 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 506 ConstructedInterpolants, 0 QuantifiedInterpolants, 1095 SizeOfPredicates, 22 NumberOfNonLiveVariables, 1109 ConjunctsInSsa, 44 ConjunctsInUnsatCore, 30 InterpolantComputations, 8 PerfectInterpolantSequences, 189/280 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: OVERALL_TIME: 2.5s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 4, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 35, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 97, TOOLS_POST_TIME: 1.9s, TOOLS_POST_CALL_APPLICATIONS: 7, TOOLS_POST_CALL_TIME: 0.1s, TOOLS_POST_RETURN_APPLICATIONS: 4, TOOLS_POST_RETURN_TIME: 0.1s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 108, TOOLS_QUANTIFIERELIM_TIME: 2.1s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.2s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 179, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 17, DOMAIN_JOIN_TIME: 0.1s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 9, DOMAIN_WIDEN_TIME: 0.1s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 15, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 35, DOMAIN_ISBOTTOM_TIME: 0.0s, LOOP_SUMMARIZER_APPLICATIONS: 6, LOOP_SUMMARIZER_CACHE_MISSES: 6, LOOP_SUMMARIZER_OVERALL_TIME: 1.5s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 1.5s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 15, CALL_SUMMARIZER_APPLICATIONS: 4, CALL_SUMMARIZER_CACHE_MISSES: 1, CALL_SUMMARIZER_OVERALL_TIME: 0.1s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.1s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 528, DAG_COMPRESSION_RETAINED_NODES: 121, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 12 specifications checked. All of them hold - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: (((((((((N <= 2147483647 && 0 <= x) && #NULL <= 0) && 1 <= i) && 2 <= N) && 0 <= x) && 0 <= #NULL) && x <= 0) && 0 <= unknown-#StackHeapBarrier-unknown) && #NULL == 0) || (((((((((((((((((((((((((((!(2 == x) && unknown-#memory_int-unknown[2][7] == 0) && N <= 2147483647) && 53 == unknown-#memory_int-unknown[2][4]) && 0 <= x) && i == 0) && unknown-#memory_int-unknown[2][6] == 99) && 2 == unknown-#length-unknown[1]) && 65 == unknown-#memory_int-unknown[2][1]) && 100 == unknown-#memory_int-unknown[2][3]) && \valid[x] == 1) && #NULL <= 0) && \valid[1] == 1) && \valid[0] == 0) && 2 <= N) && unknown-#memory_int-unknown[2][5] == 46) && \valid[2] == 1) && unknown-#length-unknown[x] == N % 1073741824 * 4) && 8 == unknown-#length-unknown[2]) && 110 == unknown-#memory_int-unknown[2][2]) && unknown-#memory_int-unknown[1][0] == 48) && unknown-#StackHeapBarrier-unknown < x) && 0 <= #NULL) && x <= 0) && unknown-#memory_int-unknown[1][1] == 0) && 98 == unknown-#memory_int-unknown[2][0]) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: (((((((!(x == 0) || !(#NULL == 0)) || !(1 <= N)) || !(#NULL == 0)) || !(0 <= unknown-#StackHeapBarrier-unknown)) || !(0 <= x)) || ((((0 <= x && 1 <= i) && 0 <= x) && x <= 0) && ((x == x && res == unknown-#memory_int-unknown[x][x]) || 2 <= i))) || !(N <= 2147483647)) && (((((((!(x == 0) || !(#NULL == 0)) || !(N <= 2)) || !(1 <= N)) || !(#NULL == 0)) || i <= 2) || !(0 <= unknown-#StackHeapBarrier-unknown)) || !(0 <= x)) - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 50]: Loop Invariant Derived loop invariant: ((((((((((((ret2 <= 2147483647 && N <= 2147483647) && 0 <= x) && 0 <= i) && 0 <= ret2 + 2147483648) && 2 <= N) && #NULL == 0) && 0 <= x) && 0 <= ret + 2147483648) && !(i < N)) && x <= 0) && ret <= 2147483647) && 0 <= unknown-#StackHeapBarrier-unknown) && #NULL == 0 RESULT: Ultimate proved your program to be correct! [2022-11-19 06:56:50,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89583dc2-da7a-4dd5-9a7b-da6914d6435c/bin/utaipan-I9t0OCRTmS/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