./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-restricted-15/DivMinus.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884aa17d-6322-427f-8c94-945cacb8b8d0/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884aa17d-6322-427f-8c94-945cacb8b8d0/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_884aa17d-6322-427f-8c94-945cacb8b8d0/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884aa17d-6322-427f-8c94-945cacb8b8d0/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-restricted-15/DivMinus.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884aa17d-6322-427f-8c94-945cacb8b8d0/bin/utaipan-I9t0OCRTmS/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884aa17d-6322-427f-8c94-945cacb8b8d0/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 64bit --witnessprinter.graph.data.programhash 994e912bd4544afb34dfd80da3167326cad668e93cc9b8e5e1266c7e92b136ec --- 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 06:34:12,622 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 06:34:12,624 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 06:34:12,671 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 06:34:12,674 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 06:34:12,676 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 06:34:12,678 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 06:34:12,685 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 06:34:12,689 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 06:34:12,690 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 06:34:12,692 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 06:34:12,694 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 06:34:12,696 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 06:34:12,699 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 06:34:12,701 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 06:34:12,703 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 06:34:12,705 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 06:34:12,713 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 06:34:12,715 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 06:34:12,717 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 06:34:12,724 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 06:34:12,726 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 06:34:12,727 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 06:34:12,729 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 06:34:12,733 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 06:34:12,738 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 06:34:12,739 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 06:34:12,740 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 06:34:12,741 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 06:34:12,743 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 06:34:12,743 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 06:34:12,744 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 06:34:12,746 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 06:34:12,747 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 06:34:12,749 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 06:34:12,750 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 06:34:12,752 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 06:34:12,752 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 06:34:12,752 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 06:34:12,753 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 06:34:12,754 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 06:34:12,755 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884aa17d-6322-427f-8c94-945cacb8b8d0/bin/utaipan-I9t0OCRTmS/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-11-19 06:34:12,797 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 06:34:12,797 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 06:34:12,798 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 06:34:12,798 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 06:34:12,799 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 06:34:12,800 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 06:34:12,800 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 06:34:12,800 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 06:34:12,800 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 06:34:12,801 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 06:34:12,802 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 06:34:12,802 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 06:34:12,802 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 06:34:12,803 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 06:34:12,803 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 06:34:12,803 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 06:34:12,803 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 06:34:12,804 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 06:34:12,804 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 06:34:12,805 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-19 06:34:12,805 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 06:34:12,805 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 06:34:12,805 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 06:34:12,806 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 06:34:12,806 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 06:34:12,808 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-19 06:34:12,808 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 06:34:12,809 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 06:34:12,809 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 06:34:12,809 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 06:34:12,809 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 06:34:12,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:34:12,810 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 06:34:12,810 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 06:34:12,811 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 06:34:12,811 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 06:34:12,811 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 06:34:12,811 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 06:34:12,812 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 06:34:12,812 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 06:34:12,812 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_884aa17d-6322-427f-8c94-945cacb8b8d0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884aa17d-6322-427f-8c94-945cacb8b8d0/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 994e912bd4544afb34dfd80da3167326cad668e93cc9b8e5e1266c7e92b136ec [2022-11-19 06:34:13,085 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 06:34:13,106 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 06:34:13,109 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 06:34:13,110 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 06:34:13,111 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 06:34:13,113 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884aa17d-6322-427f-8c94-945cacb8b8d0/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/termination-restricted-15/DivMinus.c [2022-11-19 06:34:13,188 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884aa17d-6322-427f-8c94-945cacb8b8d0/bin/utaipan-I9t0OCRTmS/data/9146c47c3/8795ad2d44194537b45205862632bef5/FLAGbd9a340a0 [2022-11-19 06:34:13,761 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 06:34:13,763 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884aa17d-6322-427f-8c94-945cacb8b8d0/sv-benchmarks/c/termination-restricted-15/DivMinus.c [2022-11-19 06:34:13,770 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884aa17d-6322-427f-8c94-945cacb8b8d0/bin/utaipan-I9t0OCRTmS/data/9146c47c3/8795ad2d44194537b45205862632bef5/FLAGbd9a340a0 [2022-11-19 06:34:14,127 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884aa17d-6322-427f-8c94-945cacb8b8d0/bin/utaipan-I9t0OCRTmS/data/9146c47c3/8795ad2d44194537b45205862632bef5 [2022-11-19 06:34:14,130 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 06:34:14,131 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 06:34:14,133 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 06:34:14,133 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 06:34:14,137 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 06:34:14,138 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:34:14" (1/1) ... [2022-11-19 06:34:14,139 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f55b501 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:34:14, skipping insertion in model container [2022-11-19 06:34:14,139 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:34:14" (1/1) ... [2022-11-19 06:34:14,147 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 06:34:14,159 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:34:14,333 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:34:14,341 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 06:34:14,360 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:34:14,373 INFO L208 MainTranslator]: Completed translation [2022-11-19 06:34:14,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:34:14 WrapperNode [2022-11-19 06:34:14,373 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 06:34:14,375 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 06:34:14,376 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 06:34:14,376 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 06:34:14,383 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:34:14" (1/1) ... [2022-11-19 06:34:14,388 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:34:14" (1/1) ... [2022-11-19 06:34:14,406 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 24 [2022-11-19 06:34:14,407 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 06:34:14,408 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 06:34:14,408 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 06:34:14,409 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 06:34:14,418 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:34:14" (1/1) ... [2022-11-19 06:34:14,418 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:34:14" (1/1) ... [2022-11-19 06:34:14,419 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:34:14" (1/1) ... [2022-11-19 06:34:14,420 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:34:14" (1/1) ... [2022-11-19 06:34:14,423 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:34:14" (1/1) ... [2022-11-19 06:34:14,427 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:34:14" (1/1) ... [2022-11-19 06:34:14,428 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:34:14" (1/1) ... [2022-11-19 06:34:14,429 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:34:14" (1/1) ... [2022-11-19 06:34:14,436 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 06:34:14,440 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 06:34:14,441 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 06:34:14,441 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 06:34:14,442 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:34:14" (1/1) ... [2022-11-19 06:34:14,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:34:14,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884aa17d-6322-427f-8c94-945cacb8b8d0/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:34:14,481 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884aa17d-6322-427f-8c94-945cacb8b8d0/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 06:34:14,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884aa17d-6322-427f-8c94-945cacb8b8d0/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 06:34:14,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 06:34:14,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 06:34:14,628 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 06:34:14,630 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 06:34:14,757 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 06:34:14,798 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 06:34:14,799 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 06:34:14,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:34:14 BoogieIcfgContainer [2022-11-19 06:34:14,802 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 06:34:14,805 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 06:34:14,805 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 06:34:14,817 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 06:34:14,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:34:14" (1/3) ... [2022-11-19 06:34:14,818 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b1d744c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:34:14, skipping insertion in model container [2022-11-19 06:34:14,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:34:14" (2/3) ... [2022-11-19 06:34:14,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b1d744c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:34:14, skipping insertion in model container [2022-11-19 06:34:14,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:34:14" (3/3) ... [2022-11-19 06:34:14,821 INFO L112 eAbstractionObserver]: Analyzing ICFG DivMinus.c [2022-11-19 06:34:14,844 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 06:34:14,844 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-19 06:34:14,927 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 06:34:14,938 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;@19405917, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 06:34:14,939 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-19 06:34:14,944 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:34:14,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-19 06:34:14,956 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:34:14,957 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-19 06:34:14,959 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-19 06:34:14,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:34:14,969 INFO L85 PathProgramCache]: Analyzing trace with hash 57052, now seen corresponding path program 1 times [2022-11-19 06:34:14,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:34:14,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970907782] [2022-11-19 06:34:14,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:34:14,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:34:15,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:34:15,232 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 06:34:15,233 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:34:15,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970907782] [2022-11-19 06:34:15,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970907782] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:34:15,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:34:15,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:34:15,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770215968] [2022-11-19 06:34:15,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:34:15,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:34:15,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:34:15,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:34:15,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:34:15,317 INFO L87 Difference]: Start difference. First operand has 11 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:34:15,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:34:15,378 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2022-11-19 06:34:15,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 06:34:15,381 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-19 06:34:15,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:34:15,392 INFO L225 Difference]: With dead ends: 11 [2022-11-19 06:34:15,392 INFO L226 Difference]: Without dead ends: 9 [2022-11-19 06:34:15,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:34:15,403 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 10 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:34:15,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 8 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:34:15,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-11-19 06:34:15,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2022-11-19 06:34:15,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 6 states have (on average 1.5) internal successors, (9), 8 states have internal predecessors, (9), 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 06:34:15,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-19 06:34:15,448 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 3 [2022-11-19 06:34:15,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:34:15,449 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-19 06:34:15,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:34:15,449 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-19 06:34:15,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-19 06:34:15,450 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:34:15,450 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-19 06:34:15,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 06:34:15,451 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-19 06:34:15,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:34:15,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1768657, now seen corresponding path program 1 times [2022-11-19 06:34:15,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:34:15,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468799503] [2022-11-19 06:34:15,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:34:15,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:34:15,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:34:15,514 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 06:34:15,515 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:34:15,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468799503] [2022-11-19 06:34:15,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468799503] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:34:15,516 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:34:15,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:34:15,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492095326] [2022-11-19 06:34:15,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:34:15,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:34:15,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:34:15,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:34:15,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:34:15,523 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:34:15,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:34:15,542 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2022-11-19 06:34:15,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:34:15,543 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 06:34:15,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:34:15,544 INFO L225 Difference]: With dead ends: 9 [2022-11-19 06:34:15,544 INFO L226 Difference]: Without dead ends: 8 [2022-11-19 06:34:15,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:34:15,546 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:34:15,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:34:15,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2022-11-19 06:34:15,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2022-11-19 06:34:15,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 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 06:34:15,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2022-11-19 06:34:15,549 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 4 [2022-11-19 06:34:15,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:34:15,550 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2022-11-19 06:34:15,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:34:15,550 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2022-11-19 06:34:15,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-19 06:34:15,551 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:34:15,551 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-19 06:34:15,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 06:34:15,551 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-19 06:34:15,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:34:15,552 INFO L85 PathProgramCache]: Analyzing trace with hash 54828414, now seen corresponding path program 1 times [2022-11-19 06:34:15,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:34:15,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828853742] [2022-11-19 06:34:15,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:34:15,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:34:15,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:34:15,641 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 06:34:15,642 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:34:15,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828853742] [2022-11-19 06:34:15,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828853742] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:34:15,643 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:34:15,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 06:34:15,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480827062] [2022-11-19 06:34:15,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:34:15,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:34:15,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:34:15,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:34:15,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:34:15,645 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:34:15,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:34:15,663 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2022-11-19 06:34:15,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:34:15,664 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-19 06:34:15,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:34:15,665 INFO L225 Difference]: With dead ends: 14 [2022-11-19 06:34:15,665 INFO L226 Difference]: Without dead ends: 13 [2022-11-19 06:34:15,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:34:15,667 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 2 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:34:15,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 7 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:34:15,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-11-19 06:34:15,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2022-11-19 06:34:15,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:34:15,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-11-19 06:34:15,672 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 5 [2022-11-19 06:34:15,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:34:15,672 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-11-19 06:34:15,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:34:15,672 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-11-19 06:34:15,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-19 06:34:15,673 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:34:15,673 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-19 06:34:15,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 06:34:15,674 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-19 06:34:15,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:34:15,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1699680883, now seen corresponding path program 1 times [2022-11-19 06:34:15,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:34:15,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625144418] [2022-11-19 06:34:15,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:34:15,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:34:15,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:34:15,719 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 06:34:15,720 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:34:15,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625144418] [2022-11-19 06:34:15,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625144418] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:34:15,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:34:15,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 06:34:15,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591464103] [2022-11-19 06:34:15,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:34:15,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:34:15,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:34:15,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:34:15,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:34:15,725 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:34:15,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:34:15,741 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2022-11-19 06:34:15,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:34:15,741 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-19 06:34:15,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:34:15,743 INFO L225 Difference]: With dead ends: 12 [2022-11-19 06:34:15,744 INFO L226 Difference]: Without dead ends: 11 [2022-11-19 06:34:15,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:34:15,754 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:34:15,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 3 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:34:15,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-19 06:34:15,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2022-11-19 06:34:15,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:34:15,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2022-11-19 06:34:15,767 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 6 [2022-11-19 06:34:15,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:34:15,767 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2022-11-19 06:34:15,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:34:15,768 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2022-11-19 06:34:15,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-19 06:34:15,769 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:34:15,769 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1] [2022-11-19 06:34:15,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 06:34:15,771 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-19 06:34:15,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:34:15,772 INFO L85 PathProgramCache]: Analyzing trace with hash 702409527, now seen corresponding path program 1 times [2022-11-19 06:34:15,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:34:15,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257575329] [2022-11-19 06:34:15,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:34:15,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:34:15,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:34:15,873 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:34:15,873 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:34:15,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257575329] [2022-11-19 06:34:15,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257575329] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:34:15,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1296895856] [2022-11-19 06:34:15,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:34:15,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:34:15,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884aa17d-6322-427f-8c94-945cacb8b8d0/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:34:15,882 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884aa17d-6322-427f-8c94-945cacb8b8d0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:34:15,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884aa17d-6322-427f-8c94-945cacb8b8d0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 06:34:15,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:34:15,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 06:34:15,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:34:16,002 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:34:16,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:34:16,052 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:34:16,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1296895856] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:34:16,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2103888877] [2022-11-19 06:34:16,088 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2022-11-19 06:34:16,088 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:34:16,092 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:34:16,097 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:34:16,097 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:34:16,322 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:34:16,689 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '187#(and (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_~res~0#1|) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) (<= (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) 2147483647))' at error location [2022-11-19 06:34:16,690 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 06:34:16,690 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 06:34:16,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2022-11-19 06:34:16,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480826106] [2022-11-19 06:34:16,690 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 06:34:16,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 06:34:16,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:34:16,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 06:34:16,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-11-19 06:34:16,692 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:34:16,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:34:16,732 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2022-11-19 06:34:16,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 06:34:16,734 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-19 06:34:16,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:34:16,735 INFO L225 Difference]: With dead ends: 27 [2022-11-19 06:34:16,735 INFO L226 Difference]: Without dead ends: 26 [2022-11-19 06:34:16,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-11-19 06:34:16,736 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 4 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:34:16,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 16 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:34:16,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-19 06:34:16,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-11-19 06:34:16,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.04) internal successors, (26), 25 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:34:16,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2022-11-19 06:34:16,741 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 10 [2022-11-19 06:34:16,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:34:16,741 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2022-11-19 06:34:16,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:34:16,742 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2022-11-19 06:34:16,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-19 06:34:16,742 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:34:16,742 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1] [2022-11-19 06:34:16,748 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884aa17d-6322-427f-8c94-945cacb8b8d0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-19 06:34:16,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884aa17d-6322-427f-8c94-945cacb8b8d0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:34:16,944 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-19 06:34:16,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:34:16,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1351347390, now seen corresponding path program 2 times [2022-11-19 06:34:16,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:34:16,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327615802] [2022-11-19 06:34:16,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:34:16,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:34:16,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:34:17,105 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:34:17,105 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:34:17,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327615802] [2022-11-19 06:34:17,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327615802] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:34:17,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011829102] [2022-11-19 06:34:17,105 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 06:34:17,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:34:17,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884aa17d-6322-427f-8c94-945cacb8b8d0/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:34:17,107 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884aa17d-6322-427f-8c94-945cacb8b8d0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:34:17,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884aa17d-6322-427f-8c94-945cacb8b8d0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 06:34:17,159 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-19 06:34:17,160 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:34:17,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 06:34:17,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:34:17,225 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:34:17,226 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:34:17,313 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:34:17,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2011829102] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:34:17,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1777842067] [2022-11-19 06:34:17,320 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2022-11-19 06:34:17,321 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:34:17,321 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:34:17,322 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:34:17,322 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:34:17,429 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:34:17,713 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '412#(and (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_~res~0#1|) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) (<= (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) 2147483647))' at error location [2022-11-19 06:34:17,713 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 06:34:17,714 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 06:34:17,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-19 06:34:17,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255337102] [2022-11-19 06:34:17,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 06:34:17,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-19 06:34:17,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:34:17,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-19 06:34:17,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2022-11-19 06:34:17,716 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:34:17,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:34:17,784 INFO L93 Difference]: Finished difference Result 57 states and 62 transitions. [2022-11-19 06:34:17,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-19 06:34:17,785 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-19 06:34:17,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:34:17,786 INFO L225 Difference]: With dead ends: 57 [2022-11-19 06:34:17,786 INFO L226 Difference]: Without dead ends: 56 [2022-11-19 06:34:17,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2022-11-19 06:34:17,787 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 15 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:34:17,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 34 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:34:17,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-11-19 06:34:17,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2022-11-19 06:34:17,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.018181818181818) internal successors, (56), 55 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:34:17,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2022-11-19 06:34:17,794 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 25 [2022-11-19 06:34:17,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:34:17,794 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2022-11-19 06:34:17,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:34:17,795 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2022-11-19 06:34:17,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-19 06:34:17,796 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:34:17,796 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 1, 1] [2022-11-19 06:34:17,806 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884aa17d-6322-427f-8c94-945cacb8b8d0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-19 06:34:17,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884aa17d-6322-427f-8c94-945cacb8b8d0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:34:17,997 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-19 06:34:17,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:34:17,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1872734110, now seen corresponding path program 3 times [2022-11-19 06:34:17,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:34:17,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717248077] [2022-11-19 06:34:17,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:34:17,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:34:18,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:34:18,287 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:34:18,287 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:34:18,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717248077] [2022-11-19 06:34:18,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717248077] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:34:18,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172468158] [2022-11-19 06:34:18,288 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-19 06:34:18,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:34:18,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884aa17d-6322-427f-8c94-945cacb8b8d0/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:34:18,291 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884aa17d-6322-427f-8c94-945cacb8b8d0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:34:18,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884aa17d-6322-427f-8c94-945cacb8b8d0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 06:34:18,351 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-19 06:34:18,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:34:18,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-19 06:34:18,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:34:18,494 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:34:18,494 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:34:18,785 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:34:18,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172468158] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:34:18,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [332640943] [2022-11-19 06:34:18,788 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2022-11-19 06:34:18,789 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:34:18,791 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:34:18,792 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:34:18,792 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:34:18,900 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:34:19,175 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '901#(and (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_~res~0#1|) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) (<= (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) 2147483647))' at error location [2022-11-19 06:34:19,175 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 06:34:19,176 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 06:34:19,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-11-19 06:34:19,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383376766] [2022-11-19 06:34:19,176 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 06:34:19,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-19 06:34:19,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:34:19,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-19 06:34:19,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=294, Invalid=576, Unknown=0, NotChecked=0, Total=870 [2022-11-19 06:34:19,178 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand has 24 states, 23 states have (on average 4.782608695652174) internal successors, (110), 23 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:34:19,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:34:19,279 INFO L93 Difference]: Finished difference Result 117 states and 128 transitions. [2022-11-19 06:34:19,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-19 06:34:19,280 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 4.782608695652174) internal successors, (110), 23 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2022-11-19 06:34:19,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:34:19,281 INFO L225 Difference]: With dead ends: 117 [2022-11-19 06:34:19,282 INFO L226 Difference]: Without dead ends: 116 [2022-11-19 06:34:19,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=294, Invalid=576, Unknown=0, NotChecked=0, Total=870 [2022-11-19 06:34:19,283 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 22 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:34:19,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 70 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:34:19,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-11-19 06:34:19,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2022-11-19 06:34:19,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 1.008695652173913) internal successors, (116), 115 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:34:19,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 116 transitions. [2022-11-19 06:34:19,295 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 116 transitions. Word has length 55 [2022-11-19 06:34:19,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:34:19,295 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 116 transitions. [2022-11-19 06:34:19,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 4.782608695652174) internal successors, (110), 23 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:34:19,296 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 116 transitions. [2022-11-19 06:34:19,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-19 06:34:19,298 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:34:19,299 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 22, 22, 1, 1] [2022-11-19 06:34:19,307 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884aa17d-6322-427f-8c94-945cacb8b8d0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-19 06:34:19,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884aa17d-6322-427f-8c94-945cacb8b8d0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:34:19,504 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-19 06:34:19,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:34:19,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1094826658, now seen corresponding path program 4 times [2022-11-19 06:34:19,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:34:19,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638904063] [2022-11-19 06:34:19,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:34:19,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:34:19,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:34:20,273 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:34:20,274 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:34:20,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638904063] [2022-11-19 06:34:20,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638904063] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:34:20,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672558214] [2022-11-19 06:34:20,274 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-19 06:34:20,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:34:20,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884aa17d-6322-427f-8c94-945cacb8b8d0/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:34:20,276 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884aa17d-6322-427f-8c94-945cacb8b8d0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:34:20,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884aa17d-6322-427f-8c94-945cacb8b8d0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 06:34:20,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:34:20,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-19 06:34:20,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:34:20,604 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:34:20,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:34:21,644 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:34:21,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672558214] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:34:21,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [968663072] [2022-11-19 06:34:21,646 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2022-11-19 06:34:21,646 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:34:21,646 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:34:21,647 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:34:21,647 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:34:21,729 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:34:22,155 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1918#(and (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_~res~0#1|) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) (<= (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) 2147483647))' at error location [2022-11-19 06:34:22,156 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 06:34:22,156 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 06:34:22,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 46 [2022-11-19 06:34:22,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269820881] [2022-11-19 06:34:22,157 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 06:34:22,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-19 06:34:22,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:34:22,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-19 06:34:22,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1146, Invalid=1716, Unknown=0, NotChecked=0, Total=2862 [2022-11-19 06:34:22,160 INFO L87 Difference]: Start difference. First operand 116 states and 116 transitions. Second operand has 48 states, 47 states have (on average 4.8936170212765955) internal successors, (230), 47 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:34:22,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:34:22,378 INFO L93 Difference]: Finished difference Result 237 states and 260 transitions. [2022-11-19 06:34:22,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-19 06:34:22,378 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 4.8936170212765955) internal successors, (230), 47 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2022-11-19 06:34:22,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:34:22,385 INFO L225 Difference]: With dead ends: 237 [2022-11-19 06:34:22,386 INFO L226 Difference]: Without dead ends: 236 [2022-11-19 06:34:22,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1146, Invalid=1716, Unknown=0, NotChecked=0, Total=2862 [2022-11-19 06:34:22,388 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 46 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:34:22,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 142 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:34:22,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2022-11-19 06:34:22,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 236. [2022-11-19 06:34:22,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 235 states have (on average 1.004255319148936) internal successors, (236), 235 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:34:22,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 236 transitions. [2022-11-19 06:34:22,426 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 236 transitions. Word has length 115 [2022-11-19 06:34:22,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:34:22,428 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 236 transitions. [2022-11-19 06:34:22,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 4.8936170212765955) internal successors, (230), 47 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:34:22,429 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 236 transitions. [2022-11-19 06:34:22,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-11-19 06:34:22,440 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:34:22,440 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 47, 46, 46, 1, 1] [2022-11-19 06:34:22,454 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884aa17d-6322-427f-8c94-945cacb8b8d0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-19 06:34:22,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884aa17d-6322-427f-8c94-945cacb8b8d0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:34:22,649 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-19 06:34:22,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:34:22,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1012932830, now seen corresponding path program 5 times [2022-11-19 06:34:22,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:34:22,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761349193] [2022-11-19 06:34:22,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:34:22,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:34:22,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:34:25,740 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:34:25,741 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:34:25,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761349193] [2022-11-19 06:34:25,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761349193] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:34:25,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212225327] [2022-11-19 06:34:25,741 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 06:34:25,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:34:25,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884aa17d-6322-427f-8c94-945cacb8b8d0/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:34:25,743 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884aa17d-6322-427f-8c94-945cacb8b8d0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:34:25,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884aa17d-6322-427f-8c94-945cacb8b8d0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-19 06:34:25,932 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2022-11-19 06:34:25,932 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:34:25,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-19 06:34:25,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:34:26,327 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:34:26,327 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:34:30,006 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:34:30,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1212225327] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:34:30,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [99014331] [2022-11-19 06:34:30,009 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2022-11-19 06:34:30,009 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:34:30,009 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:34:30,010 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:34:30,010 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:34:30,089 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:34:30,559 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3991#(and (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_~res~0#1|) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) (<= (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) 2147483647))' at error location [2022-11-19 06:34:30,559 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 06:34:30,560 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 06:34:30,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 94 [2022-11-19 06:34:30,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788516298] [2022-11-19 06:34:30,561 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 06:34:30,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-11-19 06:34:30,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:34:30,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-11-19 06:34:30,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4578, Invalid=5724, Unknown=0, NotChecked=0, Total=10302 [2022-11-19 06:34:30,571 INFO L87 Difference]: Start difference. First operand 236 states and 236 transitions. Second operand has 96 states, 95 states have (on average 4.947368421052632) internal successors, (470), 95 states have internal predecessors, (470), 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 06:34:31,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:34:31,118 INFO L93 Difference]: Finished difference Result 477 states and 524 transitions. [2022-11-19 06:34:31,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-11-19 06:34:31,119 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 4.947368421052632) internal successors, (470), 95 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 235 [2022-11-19 06:34:31,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:34:31,123 INFO L225 Difference]: With dead ends: 477 [2022-11-19 06:34:31,124 INFO L226 Difference]: Without dead ends: 476 [2022-11-19 06:34:31,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 750 GetRequests, 650 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 838 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=4578, Invalid=5724, Unknown=0, NotChecked=0, Total=10302 [2022-11-19 06:34:31,131 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 94 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 06:34:31,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 286 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 06:34:31,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2022-11-19 06:34:31,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 476. [2022-11-19 06:34:31,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 475 states have (on average 1.0021052631578948) internal successors, (476), 475 states have internal predecessors, (476), 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 06:34:31,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 476 transitions. [2022-11-19 06:34:31,178 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 476 transitions. Word has length 235 [2022-11-19 06:34:31,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:34:31,180 INFO L495 AbstractCegarLoop]: Abstraction has 476 states and 476 transitions. [2022-11-19 06:34:31,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 4.947368421052632) internal successors, (470), 95 states have internal predecessors, (470), 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 06:34:31,181 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 476 transitions. [2022-11-19 06:34:31,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2022-11-19 06:34:31,199 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:34:31,200 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 95, 94, 94, 1, 1] [2022-11-19 06:34:31,212 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884aa17d-6322-427f-8c94-945cacb8b8d0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-19 06:34:31,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884aa17d-6322-427f-8c94-945cacb8b8d0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:34:31,413 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-19 06:34:31,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:34:31,413 INFO L85 PathProgramCache]: Analyzing trace with hash -847882274, now seen corresponding path program 6 times [2022-11-19 06:34:31,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:34:31,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725794096] [2022-11-19 06:34:31,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:34:31,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:34:31,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:34:39,952 INFO L134 CoverageAnalysis]: Checked inductivity of 22231 backedges. 0 proven. 22231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:34:39,952 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:34:39,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725794096] [2022-11-19 06:34:39,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725794096] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:34:39,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305475347] [2022-11-19 06:34:39,953 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-19 06:34:39,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:34:39,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884aa17d-6322-427f-8c94-945cacb8b8d0/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:34:39,955 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884aa17d-6322-427f-8c94-945cacb8b8d0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:34:39,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884aa17d-6322-427f-8c94-945cacb8b8d0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-19 06:34:40,158 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-19 06:34:40,158 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:34:40,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 955 conjuncts, 96 conjunts are in the unsatisfiable core [2022-11-19 06:34:40,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:34:41,000 INFO L134 CoverageAnalysis]: Checked inductivity of 22231 backedges. 0 proven. 22231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:34:41,000 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:34:52,645 INFO L134 CoverageAnalysis]: Checked inductivity of 22231 backedges. 0 proven. 22231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:34:52,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305475347] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:34:52,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [89421063] [2022-11-19 06:34:52,648 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2022-11-19 06:34:52,648 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:34:52,648 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:34:52,648 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:34:52,649 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:34:52,724 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:34:53,375 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8176#(and (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_~res~0#1|) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) (<= (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) 2147483647))' at error location [2022-11-19 06:34:53,376 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 06:34:53,376 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 06:34:53,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95, 95] total 190 [2022-11-19 06:34:53,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33584411] [2022-11-19 06:34:53,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 06:34:53,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2022-11-19 06:34:53,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:34:53,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2022-11-19 06:34:53,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18354, Invalid=20652, Unknown=0, NotChecked=0, Total=39006 [2022-11-19 06:34:53,400 INFO L87 Difference]: Start difference. First operand 476 states and 476 transitions. Second operand has 192 states, 191 states have (on average 4.973821989528796) internal successors, (950), 191 states have internal predecessors, (950), 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 06:34:55,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:34:55,128 INFO L93 Difference]: Finished difference Result 957 states and 1052 transitions. [2022-11-19 06:34:55,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2022-11-19 06:34:55,129 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 191 states have (on average 4.973821989528796) internal successors, (950), 191 states have internal predecessors, (950), 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 475 [2022-11-19 06:34:55,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:34:55,132 INFO L225 Difference]: With dead ends: 957 [2022-11-19 06:34:55,132 INFO L226 Difference]: Without dead ends: 956 [2022-11-19 06:34:55,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1518 GetRequests, 1322 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1702 ImplicationChecksByTransitivity, 15.4s TimeCoverageRelationStatistics Valid=18354, Invalid=20652, Unknown=0, NotChecked=0, Total=39006 [2022-11-19 06:34:55,137 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 190 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-19 06:34:55,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 574 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-19 06:34:55,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 956 states. [2022-11-19 06:34:55,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 956 to 956. [2022-11-19 06:34:55,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 956 states, 955 states have (on average 1.0010471204188482) internal successors, (956), 955 states have internal predecessors, (956), 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 06:34:55,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 956 states to 956 states and 956 transitions. [2022-11-19 06:34:55,163 INFO L78 Accepts]: Start accepts. Automaton has 956 states and 956 transitions. Word has length 475 [2022-11-19 06:34:55,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:34:55,164 INFO L495 AbstractCegarLoop]: Abstraction has 956 states and 956 transitions. [2022-11-19 06:34:55,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 191 states have (on average 4.973821989528796) internal successors, (950), 191 states have internal predecessors, (950), 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 06:34:55,165 INFO L276 IsEmpty]: Start isEmpty. Operand 956 states and 956 transitions. [2022-11-19 06:34:55,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 956 [2022-11-19 06:34:55,198 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:34:55,198 INFO L195 NwaCegarLoop]: trace histogram [191, 191, 191, 190, 190, 1, 1] [2022-11-19 06:34:55,205 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884aa17d-6322-427f-8c94-945cacb8b8d0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-19 06:34:55,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884aa17d-6322-427f-8c94-945cacb8b8d0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-19 06:34:55,405 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-19 06:34:55,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:34:55,406 INFO L85 PathProgramCache]: Analyzing trace with hash -924006946, now seen corresponding path program 7 times [2022-11-19 06:34:55,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:34:55,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283212197] [2022-11-19 06:34:55,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:34:55,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:34:56,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:35:25,727 INFO L134 CoverageAnalysis]: Checked inductivity of 90535 backedges. 0 proven. 90535 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:35:25,727 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:35:25,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283212197] [2022-11-19 06:35:25,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283212197] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:35:25,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363595574] [2022-11-19 06:35:25,728 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-19 06:35:25,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:35:25,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884aa17d-6322-427f-8c94-945cacb8b8d0/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:35:25,735 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884aa17d-6322-427f-8c94-945cacb8b8d0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:35:25,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884aa17d-6322-427f-8c94-945cacb8b8d0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-19 06:35:26,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:35:26,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 1915 conjuncts, 192 conjunts are in the unsatisfiable core [2022-11-19 06:35:26,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:35:27,596 INFO L134 CoverageAnalysis]: Checked inductivity of 90535 backedges. 0 proven. 90535 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:35:27,596 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:36:11,998 INFO L134 CoverageAnalysis]: Checked inductivity of 90535 backedges. 0 proven. 90535 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:36:11,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [363595574] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:36:11,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1356637732] [2022-11-19 06:36:12,001 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2022-11-19 06:36:12,001 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:36:12,002 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:36:12,002 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:36:12,002 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:36:12,062 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:36:13,128 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '16585#(and (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_~res~0#1|) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) (<= (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) 2147483647))' at error location [2022-11-19 06:36:13,129 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 06:36:13,129 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 06:36:13,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [191, 191, 191] total 382 [2022-11-19 06:36:13,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234850228] [2022-11-19 06:36:13,130 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 06:36:13,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 384 states [2022-11-19 06:36:13,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:36:13,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 384 interpolants. [2022-11-19 06:36:13,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73554, Invalid=78156, Unknown=0, NotChecked=0, Total=151710 [2022-11-19 06:36:13,163 INFO L87 Difference]: Start difference. First operand 956 states and 956 transitions. Second operand has 384 states, 383 states have (on average 4.986945169712794) internal successors, (1910), 383 states have internal predecessors, (1910), 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 06:36:22,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:36:22,200 INFO L93 Difference]: Finished difference Result 1917 states and 2108 transitions. [2022-11-19 06:36:22,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2022-11-19 06:36:22,201 INFO L78 Accepts]: Start accepts. Automaton has has 384 states, 383 states have (on average 4.986945169712794) internal successors, (1910), 383 states have internal predecessors, (1910), 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 955 [2022-11-19 06:36:22,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:36:22,211 INFO L225 Difference]: With dead ends: 1917 [2022-11-19 06:36:22,211 INFO L226 Difference]: Without dead ends: 1916 [2022-11-19 06:36:22,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3054 GetRequests, 2666 SyntacticMatches, 0 SemanticMatches, 388 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3430 ImplicationChecksByTransitivity, 58.2s TimeCoverageRelationStatistics Valid=73554, Invalid=78156, Unknown=0, NotChecked=0, Total=151710 [2022-11-19 06:36:22,222 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 382 mSDsluCounter, 1146 mSDsCounter, 0 mSdLazyCounter, 774 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 1150 SdHoareTripleChecker+Invalid, 972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:36:22,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [382 Valid, 1150 Invalid, 972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 774 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-19 06:36:22,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1916 states. [2022-11-19 06:36:22,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1916 to 1916. [2022-11-19 06:36:22,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1916 states, 1915 states have (on average 1.0005221932114883) internal successors, (1916), 1915 states have internal predecessors, (1916), 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 06:36:22,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1916 states to 1916 states and 1916 transitions. [2022-11-19 06:36:22,273 INFO L78 Accepts]: Start accepts. Automaton has 1916 states and 1916 transitions. Word has length 955 [2022-11-19 06:36:22,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:36:22,275 INFO L495 AbstractCegarLoop]: Abstraction has 1916 states and 1916 transitions. [2022-11-19 06:36:22,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 384 states, 383 states have (on average 4.986945169712794) internal successors, (1910), 383 states have internal predecessors, (1910), 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 06:36:22,276 INFO L276 IsEmpty]: Start isEmpty. Operand 1916 states and 1916 transitions. [2022-11-19 06:36:22,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1916 [2022-11-19 06:36:22,336 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:36:22,336 INFO L195 NwaCegarLoop]: trace histogram [383, 383, 383, 382, 382, 1, 1] [2022-11-19 06:36:22,342 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884aa17d-6322-427f-8c94-945cacb8b8d0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-19 06:36:22,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884aa17d-6322-427f-8c94-945cacb8b8d0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-19 06:36:22,537 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-19 06:36:22,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:36:22,538 INFO L85 PathProgramCache]: Analyzing trace with hash 889299422, now seen corresponding path program 8 times [2022-11-19 06:36:22,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:36:22,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787148984] [2022-11-19 06:36:22,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:36:22,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:36:24,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:38:56,747 INFO L134 CoverageAnalysis]: Checked inductivity of 365383 backedges. 0 proven. 365383 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:38:56,747 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:38:56,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787148984] [2022-11-19 06:38:56,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787148984] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:38:56,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235556236] [2022-11-19 06:38:56,747 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 06:38:56,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:38:56,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884aa17d-6322-427f-8c94-945cacb8b8d0/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:38:56,751 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884aa17d-6322-427f-8c94-945cacb8b8d0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:38:56,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884aa17d-6322-427f-8c94-945cacb8b8d0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-19 06:39:02,897 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 383 check-sat command(s) [2022-11-19 06:39:02,897 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:39:02,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 3835 conjuncts, 384 conjunts are in the unsatisfiable core [2022-11-19 06:39:02,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:39:05,735 INFO L134 CoverageAnalysis]: Checked inductivity of 365383 backedges. 0 proven. 365383 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:39:05,735 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:42:05,519 INFO L134 CoverageAnalysis]: Checked inductivity of 365383 backedges. 0 proven. 365383 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:42:05,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [235556236] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:42:05,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1034294752] [2022-11-19 06:42:05,522 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2022-11-19 06:42:05,522 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:42:05,523 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:42:05,523 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:42:05,523 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:42:05,586 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:42:07,515 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '33442#(and (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_~res~0#1|) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) (<= (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) 2147483647))' at error location [2022-11-19 06:42:07,515 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 06:42:07,515 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 06:42:07,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [383, 383, 383] total 766 [2022-11-19 06:42:07,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897548269] [2022-11-19 06:42:07,517 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 06:42:07,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 768 states [2022-11-19 06:42:07,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:42:07,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 768 interpolants. [2022-11-19 06:42:07,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=294546, Invalid=303756, Unknown=0, NotChecked=0, Total=598302 [2022-11-19 06:42:07,615 INFO L87 Difference]: Start difference. First operand 1916 states and 1916 transitions. Second operand has 768 states, 767 states have (on average 4.99348109517601) internal successors, (3830), 767 states have internal predecessors, (3830), 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 06:43:11,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:43:11,334 INFO L93 Difference]: Finished difference Result 3837 states and 4220 transitions. [2022-11-19 06:43:11,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 768 states. [2022-11-19 06:43:11,338 INFO L78 Accepts]: Start accepts. Automaton has has 768 states, 767 states have (on average 4.99348109517601) internal successors, (3830), 767 states have internal predecessors, (3830), 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 1915 [2022-11-19 06:43:11,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:43:11,353 INFO L225 Difference]: With dead ends: 3837 [2022-11-19 06:43:11,354 INFO L226 Difference]: Without dead ends: 3836 [2022-11-19 06:43:11,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6126 GetRequests, 5354 SyntacticMatches, 0 SemanticMatches, 772 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6886 ImplicationChecksByTransitivity, 236.6s TimeCoverageRelationStatistics Valid=294546, Invalid=303756, Unknown=0, NotChecked=0, Total=598302 [2022-11-19 06:43:11,400 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 1149 mSDsluCounter, 2298 mSDsCounter, 0 mSdLazyCounter, 1543 mSolverCounterSat, 389 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1149 SdHoareTripleChecker+Valid, 2302 SdHoareTripleChecker+Invalid, 1932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 389 IncrementalHoareTripleChecker+Valid, 1543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:43:11,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1149 Valid, 2302 Invalid, 1932 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [389 Valid, 1543 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-19 06:43:11,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3836 states. [2022-11-19 06:43:11,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3836 to 3836. [2022-11-19 06:43:11,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3836 states, 3835 states have (on average 1.0002607561929595) internal successors, (3836), 3835 states have internal predecessors, (3836), 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 06:43:11,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3836 states to 3836 states and 3836 transitions. [2022-11-19 06:43:11,516 INFO L78 Accepts]: Start accepts. Automaton has 3836 states and 3836 transitions. Word has length 1915 [2022-11-19 06:43:11,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:43:11,519 INFO L495 AbstractCegarLoop]: Abstraction has 3836 states and 3836 transitions. [2022-11-19 06:43:11,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 768 states, 767 states have (on average 4.99348109517601) internal successors, (3830), 767 states have internal predecessors, (3830), 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 06:43:11,522 INFO L276 IsEmpty]: Start isEmpty. Operand 3836 states and 3836 transitions. [2022-11-19 06:43:11,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3836 [2022-11-19 06:43:11,743 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:43:11,745 INFO L195 NwaCegarLoop]: trace histogram [767, 767, 767, 766, 766, 1, 1] [2022-11-19 06:43:11,756 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884aa17d-6322-427f-8c94-945cacb8b8d0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-19 06:43:11,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_884aa17d-6322-427f-8c94-945cacb8b8d0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:43:11,947 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-19 06:43:11,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:43:11,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1640716766, now seen corresponding path program 9 times [2022-11-19 06:43:11,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:43:11,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925652661] [2022-11-19 06:43:11,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:43:11,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:43:18,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat