./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/aviad.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71e3eb2-9aab-46cd-bc54-02c1abdb1bb4/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71e3eb2-9aab-46cd-bc54-02c1abdb1bb4/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71e3eb2-9aab-46cd-bc54-02c1abdb1bb4/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71e3eb2-9aab-46cd-bc54-02c1abdb1bb4/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/aviad.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71e3eb2-9aab-46cd-bc54-02c1abdb1bb4/bin/utaipan-7li7fVZpFI/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71e3eb2-9aab-46cd-bc54-02c1abdb1bb4/bin/utaipan-7li7fVZpFI --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 212c9b1b6a93f8f17548e7937584929a6b6ed1677eb6287f5deae898fbaeb3a4 --- 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-5e519f3 [2022-11-03 02:33:18,519 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:33:18,522 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:33:18,581 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:33:18,582 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:33:18,586 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:33:18,589 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:33:18,593 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:33:18,596 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:33:18,602 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:33:18,603 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:33:18,605 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:33:18,606 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:33:18,609 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:33:18,611 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:33:18,613 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:33:18,616 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:33:18,617 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:33:18,620 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:33:18,630 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:33:18,631 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:33:18,633 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:33:18,636 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:33:18,637 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:33:18,647 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:33:18,647 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:33:18,648 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:33:18,650 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:33:18,650 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:33:18,651 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:33:18,652 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:33:18,653 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:33:18,655 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:33:18,657 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:33:18,658 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:33:18,658 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:33:18,659 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:33:18,659 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:33:18,660 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:33:18,660 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:33:18,661 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:33:18,662 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71e3eb2-9aab-46cd-bc54-02c1abdb1bb4/bin/utaipan-7li7fVZpFI/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-11-03 02:33:18,704 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:33:18,705 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:33:18,706 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:33:18,706 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:33:18,707 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:33:18,707 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:33:18,707 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:33:18,708 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:33:18,708 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:33:18,708 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:33:18,708 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:33:18,708 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:33:18,708 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:33:18,709 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:33:18,709 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:33:18,709 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:33:18,709 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:33:18,710 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:33:18,710 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:33:18,710 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-03 02:33:18,711 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:33:18,711 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:33:18,711 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:33:18,711 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:33:18,711 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:33:18,712 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-03 02:33:18,712 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:33:18,712 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:33:18,712 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:33:18,712 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:33:18,713 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:33:18,713 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:33:18,713 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:33:18,713 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:33:18,714 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:33:18,714 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:33:18,714 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:33:18,714 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:33:18,714 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:33:18,715 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:33:18,715 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_d71e3eb2-9aab-46cd-bc54-02c1abdb1bb4/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71e3eb2-9aab-46cd-bc54-02c1abdb1bb4/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 212c9b1b6a93f8f17548e7937584929a6b6ed1677eb6287f5deae898fbaeb3a4 [2022-11-03 02:33:19,043 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:33:19,077 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:33:19,080 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:33:19,082 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:33:19,083 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:33:19,084 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71e3eb2-9aab-46cd-bc54-02c1abdb1bb4/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/termination-crafted-lit/aviad.c [2022-11-03 02:33:19,180 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71e3eb2-9aab-46cd-bc54-02c1abdb1bb4/bin/utaipan-7li7fVZpFI/data/8dfdf62d9/7621292d96e64e5c94b3c5cd42fbcba5/FLAGa0414da19 [2022-11-03 02:33:19,635 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:33:19,636 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71e3eb2-9aab-46cd-bc54-02c1abdb1bb4/sv-benchmarks/c/termination-crafted-lit/aviad.c [2022-11-03 02:33:19,643 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71e3eb2-9aab-46cd-bc54-02c1abdb1bb4/bin/utaipan-7li7fVZpFI/data/8dfdf62d9/7621292d96e64e5c94b3c5cd42fbcba5/FLAGa0414da19 [2022-11-03 02:33:20,021 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71e3eb2-9aab-46cd-bc54-02c1abdb1bb4/bin/utaipan-7li7fVZpFI/data/8dfdf62d9/7621292d96e64e5c94b3c5cd42fbcba5 [2022-11-03 02:33:20,024 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:33:20,026 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:33:20,027 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:33:20,028 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:33:20,036 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:33:20,037 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:33:20" (1/1) ... [2022-11-03 02:33:20,038 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@269385f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:33:20, skipping insertion in model container [2022-11-03 02:33:20,038 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:33:20" (1/1) ... [2022-11-03 02:33:20,047 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:33:20,062 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:33:20,273 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:33:20,276 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:33:20,290 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:33:20,303 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:33:20,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:33:20 WrapperNode [2022-11-03 02:33:20,304 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:33:20,305 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:33:20,305 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:33:20,305 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:33:20,314 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:33:20" (1/1) ... [2022-11-03 02:33:20,318 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:33:20" (1/1) ... [2022-11-03 02:33:20,348 INFO L138 Inliner]: procedures = 5, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 33 [2022-11-03 02:33:20,348 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:33:20,349 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:33:20,350 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:33:20,350 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:33:20,361 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:33:20" (1/1) ... [2022-11-03 02:33:20,361 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:33:20" (1/1) ... [2022-11-03 02:33:20,363 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:33:20" (1/1) ... [2022-11-03 02:33:20,365 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:33:20" (1/1) ... [2022-11-03 02:33:20,378 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:33:20" (1/1) ... [2022-11-03 02:33:20,385 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:33:20" (1/1) ... [2022-11-03 02:33:20,386 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:33:20" (1/1) ... [2022-11-03 02:33:20,387 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:33:20" (1/1) ... [2022-11-03 02:33:20,392 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:33:20,396 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:33:20,396 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:33:20,397 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:33:20,398 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:33:20" (1/1) ... [2022-11-03 02:33:20,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:33:20,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71e3eb2-9aab-46cd-bc54-02c1abdb1bb4/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:33:20,434 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71e3eb2-9aab-46cd-bc54-02c1abdb1bb4/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:33:20,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71e3eb2-9aab-46cd-bc54-02c1abdb1bb4/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:33:20,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:33:20,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:33:20,559 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:33:20,561 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:33:20,785 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:33:20,849 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:33:20,849 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 02:33:20,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:33:20 BoogieIcfgContainer [2022-11-03 02:33:20,853 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:33:20,855 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:33:20,855 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:33:20,859 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:33:20,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:33:20" (1/3) ... [2022-11-03 02:33:20,861 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@281fc196 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:33:20, skipping insertion in model container [2022-11-03 02:33:20,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:33:20" (2/3) ... [2022-11-03 02:33:20,861 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@281fc196 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:33:20, skipping insertion in model container [2022-11-03 02:33:20,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:33:20" (3/3) ... [2022-11-03 02:33:20,863 INFO L112 eAbstractionObserver]: Analyzing ICFG aviad.c [2022-11-03 02:33:20,884 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:33:20,885 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-03 02:33:20,988 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:33:20,996 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;@21e6f5be, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:33:21,008 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-03 02:33:21,016 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 10 states have (on average 1.8) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:33:21,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-03 02:33:21,025 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:33:21,028 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-03 02:33:21,030 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-03 02:33:21,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:33:21,037 INFO L85 PathProgramCache]: Analyzing trace with hash 2185955, now seen corresponding path program 1 times [2022-11-03 02:33:21,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:33:21,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299951424] [2022-11-03 02:33:21,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:33:21,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:33:21,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:33:21,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:33:21,388 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:33:21,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299951424] [2022-11-03 02:33:21,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299951424] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:33:21,391 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:33:21,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-03 02:33:21,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950913754] [2022-11-03 02:33:21,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:33:21,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:33:21,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:33:21,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:33:21,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:33:21,457 INFO L87 Difference]: Start difference. First operand has 17 states, 10 states have (on average 1.8) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:33:21,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:33:21,540 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2022-11-03 02:33:21,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:33:21,543 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-03 02:33:21,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:33:21,553 INFO L225 Difference]: With dead ends: 17 [2022-11-03 02:33:21,555 INFO L226 Difference]: Without dead ends: 14 [2022-11-03 02:33:21,567 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 [2022-11-03 02:33:21,573 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 11 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:33:21,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 7 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:33:21,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-03 02:33:21,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-11-03 02:33:21,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.5) internal successors, (15), 13 states have internal predecessors, (15), 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) [2022-11-03 02:33:21,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2022-11-03 02:33:21,621 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 4 [2022-11-03 02:33:21,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:33:21,622 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2022-11-03 02:33:21,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:33:21,624 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-11-03 02:33:21,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-03 02:33:21,625 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:33:21,625 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-03 02:33:21,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:33:21,626 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-03 02:33:21,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:33:21,629 INFO L85 PathProgramCache]: Analyzing trace with hash 67764659, now seen corresponding path program 1 times [2022-11-03 02:33:21,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:33:21,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115937016] [2022-11-03 02:33:21,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:33:21,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:33:21,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:33:21,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:33:21,713 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:33:21,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115937016] [2022-11-03 02:33:21,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115937016] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:33:21,715 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:33:21,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:33:21,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435244005] [2022-11-03 02:33:21,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:33:21,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:33:21,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:33:21,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:33:21,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:33:21,721 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:33:21,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:33:21,756 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2022-11-03 02:33:21,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:33:21,757 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 [2022-11-03 02:33:21,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:33:21,758 INFO L225 Difference]: With dead ends: 14 [2022-11-03 02:33:21,758 INFO L226 Difference]: Without dead ends: 12 [2022-11-03 02:33:21,759 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 [2022-11-03 02:33:21,761 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 2 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:33:21,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 13 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:33:21,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-11-03 02:33:21,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-11-03 02:33:21,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:33:21,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2022-11-03 02:33:21,771 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 5 [2022-11-03 02:33:21,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:33:21,772 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2022-11-03 02:33:21,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:33:21,774 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2022-11-03 02:33:21,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-03 02:33:21,778 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:33:21,778 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:33:21,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:33:21,779 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-03 02:33:21,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:33:21,787 INFO L85 PathProgramCache]: Analyzing trace with hash 697329653, now seen corresponding path program 1 times [2022-11-03 02:33:21,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:33:21,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108366559] [2022-11-03 02:33:21,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:33:21,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:33:21,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:33:21,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:33:21,858 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:33:21,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108366559] [2022-11-03 02:33:21,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108366559] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:33:21,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:33:21,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:33:21,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616563207] [2022-11-03 02:33:21,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:33:21,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:33:21,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:33:21,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:33:21,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:33:21,864 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:33:21,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:33:21,910 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2022-11-03 02:33:21,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:33:21,912 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-03 02:33:21,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:33:21,913 INFO L225 Difference]: With dead ends: 23 [2022-11-03 02:33:21,913 INFO L226 Difference]: Without dead ends: 22 [2022-11-03 02:33:21,914 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 [2022-11-03 02:33:21,915 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 8 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:33:21,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 25 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:33:21,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-11-03 02:33:21,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2022-11-03 02:33:21,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 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) [2022-11-03 02:33:21,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2022-11-03 02:33:21,927 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 7 [2022-11-03 02:33:21,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:33:21,927 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2022-11-03 02:33:21,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:33:21,928 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2022-11-03 02:33:21,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-03 02:33:21,928 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:33:21,928 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:33:21,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:33:21,929 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-03 02:33:21,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:33:21,930 INFO L85 PathProgramCache]: Analyzing trace with hash 142382823, now seen corresponding path program 1 times [2022-11-03 02:33:21,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:33:21,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95978563] [2022-11-03 02:33:21,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:33:21,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:33:21,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:33:21,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:33:21,985 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:33:21,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95978563] [2022-11-03 02:33:21,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95978563] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:33:21,986 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:33:21,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:33:21,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005914546] [2022-11-03 02:33:21,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:33:21,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:33:21,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:33:21,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:33:21,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:33:21,988 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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) [2022-11-03 02:33:22,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:33:22,007 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2022-11-03 02:33:22,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:33:22,008 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-03 02:33:22,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:33:22,009 INFO L225 Difference]: With dead ends: 20 [2022-11-03 02:33:22,009 INFO L226 Difference]: Without dead ends: 19 [2022-11-03 02:33:22,010 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 [2022-11-03 02:33:22,011 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 7 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 14 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 [2022-11-03 02:33:22,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 14 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:33:22,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-11-03 02:33:22,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-11-03 02:33:22,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 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) [2022-11-03 02:33:22,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2022-11-03 02:33:22,016 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 8 [2022-11-03 02:33:22,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:33:22,017 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2022-11-03 02:33:22,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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) [2022-11-03 02:33:22,017 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-11-03 02:33:22,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-03 02:33:22,018 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:33:22,018 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1] [2022-11-03 02:33:22,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 02:33:22,019 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-03 02:33:22,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:33:22,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1497150636, now seen corresponding path program 1 times [2022-11-03 02:33:22,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:33:22,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507324076] [2022-11-03 02:33:22,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:33:22,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:33:22,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:33:22,139 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:33:22,141 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:33:22,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507324076] [2022-11-03 02:33:22,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507324076] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:33:22,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [736279363] [2022-11-03 02:33:22,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:33:22,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:33:22,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71e3eb2-9aab-46cd-bc54-02c1abdb1bb4/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:33:22,145 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71e3eb2-9aab-46cd-bc54-02c1abdb1bb4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:33:22,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71e3eb2-9aab-46cd-bc54-02c1abdb1bb4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:33:22,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:33:22,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 02:33:22,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:33:22,282 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:33:22,282 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:33:22,357 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:33:22,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [736279363] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:33:22,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [726857416] [2022-11-03 02:33:22,382 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-03 02:33:22,382 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:33:22,387 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:33:22,395 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:33:22,395 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:33:22,703 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:33:23,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [726857416] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:33:23,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:33:23,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4, 4, 4] total 14 [2022-11-03 02:33:23,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792478676] [2022-11-03 02:33:23,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:33:23,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 02:33:23,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:33:23,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 02:33:23,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2022-11-03 02:33:23,249 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 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) [2022-11-03 02:33:23,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:33:23,480 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2022-11-03 02:33:23,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 02:33:23,485 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 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) Word has length 14 [2022-11-03 02:33:23,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:33:23,486 INFO L225 Difference]: With dead ends: 35 [2022-11-03 02:33:23,486 INFO L226 Difference]: Without dead ends: 34 [2022-11-03 02:33:23,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2022-11-03 02:33:23,488 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 10 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:33:23,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 9 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:33:23,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-03 02:33:23,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 24. [2022-11-03 02:33:23,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.173913043478261) internal successors, (27), 23 states have internal predecessors, (27), 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) [2022-11-03 02:33:23,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2022-11-03 02:33:23,500 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 14 [2022-11-03 02:33:23,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:33:23,501 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2022-11-03 02:33:23,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 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) [2022-11-03 02:33:23,502 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2022-11-03 02:33:23,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-03 02:33:23,503 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:33:23,504 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:33:23,542 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71e3eb2-9aab-46cd-bc54-02c1abdb1bb4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-03 02:33:23,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71e3eb2-9aab-46cd-bc54-02c1abdb1bb4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:33:23,730 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-03 02:33:23,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:33:23,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1502876274, now seen corresponding path program 1 times [2022-11-03 02:33:23,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:33:23,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070888384] [2022-11-03 02:33:23,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:33:23,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:33:23,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:33:23,895 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:33:23,895 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:33:23,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070888384] [2022-11-03 02:33:23,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070888384] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:33:23,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563007094] [2022-11-03 02:33:23,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:33:23,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:33:23,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71e3eb2-9aab-46cd-bc54-02c1abdb1bb4/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:33:23,898 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71e3eb2-9aab-46cd-bc54-02c1abdb1bb4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:33:23,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71e3eb2-9aab-46cd-bc54-02c1abdb1bb4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 02:33:23,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:33:23,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 02:33:23,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:33:24,002 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:33:24,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:33:24,072 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:33:24,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [563007094] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:33:24,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [809530045] [2022-11-03 02:33:24,075 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-11-03 02:33:24,075 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:33:24,076 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:33:24,076 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:33:24,076 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:33:25,178 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:33:30,678 WARN L234 SmtUtils]: Spent 5.47s on a formula simplification. DAG size of input: 65 DAG size of output: 58 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:33:39,487 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '438#(and (= |ULTIMATE.start_f_~count~0#1| |ULTIMATE.start_f_#t~post0#1|) (not (<= |ULTIMATE.start_f_#t~post0#1| 2147483646)) (or (and (<= |ULTIMATE.start_f_~a#1| 2147483647) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (not (= |ULTIMATE.start_f_~tmp~0#1| 0)) (<= 0 (+ |ULTIMATE.start_f_#in~a#1| 2147483648)) (< 0 |ULTIMATE.start_f_~a#1|) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483648)) (<= |ULTIMATE.start_f_#in~a#1| 2147483647) (= (ite (and (not (= (mod (+ |ULTIMATE.start_f_~a#1| 1) 2) 0)) (< (+ |ULTIMATE.start_f_~a#1| 1) 0)) (+ (mod (+ |ULTIMATE.start_f_~a#1| 1) 2) (- 2)) (mod (+ |ULTIMATE.start_f_~a#1| 1) 2)) |ULTIMATE.start_f_~tmp~0#1|)) (and (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_#in~a#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483648)) (<= |ULTIMATE.start_f_#in~a#1| 2147483647) (= |ULTIMATE.start_f_~tmp~0#1| 0) (exists ((|v_ULTIMATE.start_f_~a#1_34| Int)) (and (< 1 |v_ULTIMATE.start_f_~a#1_34|) (<= 0 (+ (ite (and (not (= (mod |v_ULTIMATE.start_f_~a#1_34| 2) 0)) (< |v_ULTIMATE.start_f_~a#1_34| 0)) (+ (div |v_ULTIMATE.start_f_~a#1_34| 2) 1) (div |v_ULTIMATE.start_f_~a#1_34| 2)) 2147483648)) (= |ULTIMATE.start_f_~tmp~0#1| (ite (and (not (= (mod |v_ULTIMATE.start_f_~a#1_34| 2) 0)) (< |v_ULTIMATE.start_f_~a#1_34| 0)) (+ (- 2) (mod |v_ULTIMATE.start_f_~a#1_34| 2)) (mod |v_ULTIMATE.start_f_~a#1_34| 2))) (= (ite (and (not (= (mod |v_ULTIMATE.start_f_~a#1_34| 2) 0)) (< |v_ULTIMATE.start_f_~a#1_34| 0)) (+ (div |v_ULTIMATE.start_f_~a#1_34| 2) 1) (div |v_ULTIMATE.start_f_~a#1_34| 2)) |ULTIMATE.start_f_~a#1|) (<= (ite (and (not (= (mod |v_ULTIMATE.start_f_~a#1_34| 2) 0)) (< |v_ULTIMATE.start_f_~a#1_34| 0)) (+ (div |v_ULTIMATE.start_f_~a#1_34| 2) 1) (div |v_ULTIMATE.start_f_~a#1_34| 2)) 2147483647))))))' at error location [2022-11-03 02:33:39,487 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:33:39,488 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:33:39,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2022-11-03 02:33:39,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377513429] [2022-11-03 02:33:39,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:33:39,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-03 02:33:39,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:33:39,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-03 02:33:39,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2022-11-03 02:33:39,490 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 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) [2022-11-03 02:33:39,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:33:39,613 INFO L93 Difference]: Finished difference Result 79 states and 90 transitions. [2022-11-03 02:33:39,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-03 02:33:39,614 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 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 14 [2022-11-03 02:33:39,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:33:39,615 INFO L225 Difference]: With dead ends: 79 [2022-11-03 02:33:39,615 INFO L226 Difference]: Without dead ends: 78 [2022-11-03 02:33:39,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 14.4s TimeCoverageRelationStatistics Valid=106, Invalid=446, Unknown=0, NotChecked=0, Total=552 [2022-11-03 02:33:39,616 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 44 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:33:39,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 60 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:33:39,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-11-03 02:33:39,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 72. [2022-11-03 02:33:39,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.1408450704225352) internal successors, (81), 71 states have internal predecessors, (81), 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) [2022-11-03 02:33:39,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 81 transitions. [2022-11-03 02:33:39,641 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 81 transitions. Word has length 14 [2022-11-03 02:33:39,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:33:39,641 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 81 transitions. [2022-11-03 02:33:39,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 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) [2022-11-03 02:33:39,642 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 81 transitions. [2022-11-03 02:33:39,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-03 02:33:39,644 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:33:39,644 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2022-11-03 02:33:39,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71e3eb2-9aab-46cd-bc54-02c1abdb1bb4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 02:33:39,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71e3eb2-9aab-46cd-bc54-02c1abdb1bb4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-03 02:33:39,864 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-03 02:33:39,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:33:39,864 INFO L85 PathProgramCache]: Analyzing trace with hash 2144510063, now seen corresponding path program 2 times [2022-11-03 02:33:39,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:33:39,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284882126] [2022-11-03 02:33:39,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:33:39,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:33:39,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:33:40,235 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:33:40,235 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:33:40,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284882126] [2022-11-03 02:33:40,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284882126] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:33:40,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818759178] [2022-11-03 02:33:40,236 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 02:33:40,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:33:40,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71e3eb2-9aab-46cd-bc54-02c1abdb1bb4/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:33:40,238 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71e3eb2-9aab-46cd-bc54-02c1abdb1bb4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:33:40,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71e3eb2-9aab-46cd-bc54-02c1abdb1bb4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 02:33:40,297 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-03 02:33:40,298 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:33:40,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 02:33:40,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:33:40,530 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 40 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-03 02:33:40,530 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:33:40,784 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 40 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-03 02:33:40,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818759178] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:33:40,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1682223582] [2022-11-03 02:33:40,787 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-11-03 02:33:40,787 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:33:40,787 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:33:40,788 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:33:40,788 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:33:41,544 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:33:49,249 WARN L234 SmtUtils]: Spent 7.64s on a formula simplification. DAG size of input: 65 DAG size of output: 59 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:33:58,483 WARN L234 SmtUtils]: Spent 5.48s on a formula simplification. DAG size of input: 64 DAG size of output: 59 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:33:58,632 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '850#(and (<= |ULTIMATE.start_f_~a#1| 2147483647) (or (and (not (= |ULTIMATE.start_f_~tmp~0#1| 0)) (< 0 |ULTIMATE.start_f_~a#1|) (= (ite (and (not (= (mod (+ |ULTIMATE.start_f_~a#1| 1) 2) 0)) (< (+ |ULTIMATE.start_f_~a#1| 1) 0)) (+ (mod (+ |ULTIMATE.start_f_~a#1| 1) 2) (- 2)) (mod (+ |ULTIMATE.start_f_~a#1| 1) 2)) |ULTIMATE.start_f_~tmp~0#1|)) (and (exists ((|v_ULTIMATE.start_f_~a#1_49| Int)) (and (<= 0 (+ (ite (and (not (= (mod |v_ULTIMATE.start_f_~a#1_49| 2) 0)) (< |v_ULTIMATE.start_f_~a#1_49| 0)) (+ (div |v_ULTIMATE.start_f_~a#1_49| 2) 1) (div |v_ULTIMATE.start_f_~a#1_49| 2)) 2147483648)) (<= (ite (and (not (= (mod |v_ULTIMATE.start_f_~a#1_49| 2) 0)) (< |v_ULTIMATE.start_f_~a#1_49| 0)) (+ (div |v_ULTIMATE.start_f_~a#1_49| 2) 1) (div |v_ULTIMATE.start_f_~a#1_49| 2)) 2147483647) (< 1 |v_ULTIMATE.start_f_~a#1_49|) (= |ULTIMATE.start_f_~a#1| (ite (and (not (= (mod |v_ULTIMATE.start_f_~a#1_49| 2) 0)) (< |v_ULTIMATE.start_f_~a#1_49| 0)) (+ (div |v_ULTIMATE.start_f_~a#1_49| 2) 1) (div |v_ULTIMATE.start_f_~a#1_49| 2))) (= (ite (and (not (= (mod |v_ULTIMATE.start_f_~a#1_49| 2) 0)) (< |v_ULTIMATE.start_f_~a#1_49| 0)) (+ (- 2) (mod |v_ULTIMATE.start_f_~a#1_49| 2)) (mod |v_ULTIMATE.start_f_~a#1_49| 2)) |ULTIMATE.start_f_~tmp~0#1|))) (= |ULTIMATE.start_f_~tmp~0#1| 0))) (= |ULTIMATE.start_f_~count~0#1| |ULTIMATE.start_f_#t~post0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_#in~a#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483648)) (not (<= |ULTIMATE.start_f_#t~post0#1| 2147483646)) (<= |ULTIMATE.start_f_#in~a#1| 2147483647))' at error location [2022-11-03 02:33:58,632 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:33:58,633 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:33:58,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 21 [2022-11-03 02:33:58,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133701716] [2022-11-03 02:33:58,634 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:33:58,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-03 02:33:58,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:33:58,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-03 02:33:58,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=795, Unknown=0, NotChecked=0, Total=930 [2022-11-03 02:33:58,638 INFO L87 Difference]: Start difference. First operand 72 states and 81 transitions. Second operand has 21 states, 21 states have (on average 3.7142857142857144) internal successors, (78), 21 states have internal predecessors, (78), 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) [2022-11-03 02:34:00,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:34:00,255 INFO L93 Difference]: Finished difference Result 131 states and 149 transitions. [2022-11-03 02:34:00,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-03 02:34:00,256 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.7142857142857144) internal successors, (78), 21 states have internal predecessors, (78), 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 35 [2022-11-03 02:34:00,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:34:00,257 INFO L225 Difference]: With dead ends: 131 [2022-11-03 02:34:00,257 INFO L226 Difference]: Without dead ends: 85 [2022-11-03 02:34:00,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 93 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1322 ImplicationChecksByTransitivity, 18.6s TimeCoverageRelationStatistics Valid=664, Invalid=4028, Unknown=0, NotChecked=0, Total=4692 [2022-11-03 02:34:00,261 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 165 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:34:00,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 22 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:34:00,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-11-03 02:34:00,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 82. [2022-11-03 02:34:00,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.0987654320987654) internal successors, (89), 81 states have internal predecessors, (89), 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) [2022-11-03 02:34:00,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 89 transitions. [2022-11-03 02:34:00,273 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 89 transitions. Word has length 35 [2022-11-03 02:34:00,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:34:00,273 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 89 transitions. [2022-11-03 02:34:00,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.7142857142857144) internal successors, (78), 21 states have internal predecessors, (78), 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) [2022-11-03 02:34:00,274 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 89 transitions. [2022-11-03 02:34:00,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-03 02:34:00,275 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:34:00,276 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 1, 1] [2022-11-03 02:34:00,309 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71e3eb2-9aab-46cd-bc54-02c1abdb1bb4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 02:34:00,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71e3eb2-9aab-46cd-bc54-02c1abdb1bb4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:34:00,492 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-03 02:34:00,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:34:00,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1463774018, now seen corresponding path program 3 times [2022-11-03 02:34:00,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:34:00,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103932393] [2022-11-03 02:34:00,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:34:00,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:34:00,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:34:00,825 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:34:00,825 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:34:00,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103932393] [2022-11-03 02:34:00,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103932393] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:34:00,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046286665] [2022-11-03 02:34:00,826 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-03 02:34:00,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:34:00,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71e3eb2-9aab-46cd-bc54-02c1abdb1bb4/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:34:00,827 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71e3eb2-9aab-46cd-bc54-02c1abdb1bb4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:34:00,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71e3eb2-9aab-46cd-bc54-02c1abdb1bb4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 02:34:00,899 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-03 02:34:00,900 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:34:00,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-03 02:34:00,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:34:01,004 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:34:01,004 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:34:01,309 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:34:01,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2046286665] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:34:01,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1336041255] [2022-11-03 02:34:01,312 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-11-03 02:34:01,312 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:34:01,312 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:34:01,312 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:34:01,313 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:34:01,990 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:34:07,635 WARN L234 SmtUtils]: Spent 5.60s on a formula simplification. DAG size of input: 65 DAG size of output: 58 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:34:14,137 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1458#(and (= |ULTIMATE.start_f_~count~0#1| |ULTIMATE.start_f_#t~post0#1|) (or (and (<= |ULTIMATE.start_f_~a#1| 2147483647) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (not (= |ULTIMATE.start_f_~tmp~0#1| 0)) (<= 0 (+ |ULTIMATE.start_f_#in~a#1| 2147483648)) (< 0 |ULTIMATE.start_f_~a#1|) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483648)) (<= |ULTIMATE.start_f_#in~a#1| 2147483647) (= (ite (and (not (= (mod (+ |ULTIMATE.start_f_~a#1| 1) 2) 0)) (< (+ |ULTIMATE.start_f_~a#1| 1) 0)) (+ (mod (+ |ULTIMATE.start_f_~a#1| 1) 2) (- 2)) (mod (+ |ULTIMATE.start_f_~a#1| 1) 2)) |ULTIMATE.start_f_~tmp~0#1|)) (and (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_#in~a#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483648)) (exists ((|v_ULTIMATE.start_f_~a#1_65| Int)) (and (<= 0 (+ (ite (and (< |v_ULTIMATE.start_f_~a#1_65| 0) (not (= 0 (mod |v_ULTIMATE.start_f_~a#1_65| 2)))) (+ (div |v_ULTIMATE.start_f_~a#1_65| 2) 1) (div |v_ULTIMATE.start_f_~a#1_65| 2)) 2147483648)) (<= (ite (and (< |v_ULTIMATE.start_f_~a#1_65| 0) (not (= 0 (mod |v_ULTIMATE.start_f_~a#1_65| 2)))) (+ (div |v_ULTIMATE.start_f_~a#1_65| 2) 1) (div |v_ULTIMATE.start_f_~a#1_65| 2)) 2147483647) (= (ite (and (< |v_ULTIMATE.start_f_~a#1_65| 0) (not (= 0 (mod |v_ULTIMATE.start_f_~a#1_65| 2)))) (+ (div |v_ULTIMATE.start_f_~a#1_65| 2) 1) (div |v_ULTIMATE.start_f_~a#1_65| 2)) |ULTIMATE.start_f_~a#1|) (< 1 |v_ULTIMATE.start_f_~a#1_65|) (= (ite (and (< |v_ULTIMATE.start_f_~a#1_65| 0) (not (= 0 (mod |v_ULTIMATE.start_f_~a#1_65| 2)))) (+ (- 2) (mod |v_ULTIMATE.start_f_~a#1_65| 2)) (mod |v_ULTIMATE.start_f_~a#1_65| 2)) |ULTIMATE.start_f_~tmp~0#1|))) (<= |ULTIMATE.start_f_#in~a#1| 2147483647) (= |ULTIMATE.start_f_~tmp~0#1| 0))) (not (<= |ULTIMATE.start_f_#t~post0#1| 2147483646)))' at error location [2022-11-03 02:34:14,138 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:34:14,138 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:34:14,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2022-11-03 02:34:14,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544089303] [2022-11-03 02:34:14,139 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:34:14,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-03 02:34:14,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:34:14,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-03 02:34:14,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=1035, Unknown=2, NotChecked=0, Total=1260 [2022-11-03 02:34:14,141 INFO L87 Difference]: Start difference. First operand 82 states and 89 transitions. Second operand has 26 states, 25 states have (on average 3.36) internal successors, (84), 25 states have internal predecessors, (84), 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) [2022-11-03 02:34:14,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:34:14,489 INFO L93 Difference]: Finished difference Result 183 states and 210 transitions. [2022-11-03 02:34:14,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-03 02:34:14,490 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 3.36) internal successors, (84), 25 states have internal predecessors, (84), 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 42 [2022-11-03 02:34:14,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:34:14,492 INFO L225 Difference]: With dead ends: 183 [2022-11-03 02:34:14,492 INFO L226 Difference]: Without dead ends: 182 [2022-11-03 02:34:14,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 668 ImplicationChecksByTransitivity, 12.6s TimeCoverageRelationStatistics Valid=470, Invalid=1784, Unknown=2, NotChecked=0, Total=2256 [2022-11-03 02:34:14,494 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 258 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:34:14,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 122 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:34:14,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2022-11-03 02:34:14,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 180. [2022-11-03 02:34:14,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 1.0837988826815643) internal successors, (194), 179 states have internal predecessors, (194), 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) [2022-11-03 02:34:14,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 194 transitions. [2022-11-03 02:34:14,511 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 194 transitions. Word has length 42 [2022-11-03 02:34:14,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:34:14,511 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 194 transitions. [2022-11-03 02:34:14,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 3.36) internal successors, (84), 25 states have internal predecessors, (84), 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) [2022-11-03 02:34:14,512 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 194 transitions. [2022-11-03 02:34:14,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-03 02:34:14,515 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:34:14,515 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 7, 7, 7, 6, 6, 6, 1, 1] [2022-11-03 02:34:14,564 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71e3eb2-9aab-46cd-bc54-02c1abdb1bb4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-03 02:34:14,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71e3eb2-9aab-46cd-bc54-02c1abdb1bb4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:34:14,734 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-03 02:34:14,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:34:14,734 INFO L85 PathProgramCache]: Analyzing trace with hash 248445017, now seen corresponding path program 4 times [2022-11-03 02:34:14,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:34:14,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298487151] [2022-11-03 02:34:14,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:34:14,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:34:14,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:34:15,907 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:34:15,908 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:34:15,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298487151] [2022-11-03 02:34:15,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298487151] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:34:15,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612437962] [2022-11-03 02:34:15,908 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-03 02:34:15,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:34:15,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71e3eb2-9aab-46cd-bc54-02c1abdb1bb4/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:34:15,910 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71e3eb2-9aab-46cd-bc54-02c1abdb1bb4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:34:15,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71e3eb2-9aab-46cd-bc54-02c1abdb1bb4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-03 02:34:16,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:34:16,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-03 02:34:16,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:34:16,196 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:34:16,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:34:17,300 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:34:17,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [612437962] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:34:17,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1671206286] [2022-11-03 02:34:17,302 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-11-03 02:34:17,302 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:34:17,303 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:34:17,303 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:34:17,303 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:34:17,982 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:34:23,620 WARN L234 SmtUtils]: Spent 5.56s on a formula simplification. DAG size of input: 65 DAG size of output: 58 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:34:32,638 WARN L234 SmtUtils]: Spent 5.52s on a formula simplification. DAG size of input: 64 DAG size of output: 58 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:34:34,214 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2499#(and (= |ULTIMATE.start_f_~count~0#1| |ULTIMATE.start_f_#t~post0#1|) (or (and (<= |ULTIMATE.start_f_~a#1| 2147483647) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (not (= |ULTIMATE.start_f_~tmp~0#1| 0)) (<= 0 (+ |ULTIMATE.start_f_#in~a#1| 2147483648)) (< 0 |ULTIMATE.start_f_~a#1|) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483648)) (<= |ULTIMATE.start_f_#in~a#1| 2147483647) (= (ite (and (not (= (mod (+ |ULTIMATE.start_f_~a#1| 1) 2) 0)) (< (+ |ULTIMATE.start_f_~a#1| 1) 0)) (+ (mod (+ |ULTIMATE.start_f_~a#1| 1) 2) (- 2)) (mod (+ |ULTIMATE.start_f_~a#1| 1) 2)) |ULTIMATE.start_f_~tmp~0#1|)) (and (exists ((|v_ULTIMATE.start_f_~a#1_88| Int)) (and (= (ite (and (not (= (mod |v_ULTIMATE.start_f_~a#1_88| 2) 0)) (< |v_ULTIMATE.start_f_~a#1_88| 0)) (+ (- 2) (mod |v_ULTIMATE.start_f_~a#1_88| 2)) (mod |v_ULTIMATE.start_f_~a#1_88| 2)) |ULTIMATE.start_f_~tmp~0#1|) (= (ite (and (not (= (mod |v_ULTIMATE.start_f_~a#1_88| 2) 0)) (< |v_ULTIMATE.start_f_~a#1_88| 0)) (+ (div |v_ULTIMATE.start_f_~a#1_88| 2) 1) (div |v_ULTIMATE.start_f_~a#1_88| 2)) |ULTIMATE.start_f_~a#1|) (<= (ite (and (not (= (mod |v_ULTIMATE.start_f_~a#1_88| 2) 0)) (< |v_ULTIMATE.start_f_~a#1_88| 0)) (+ (div |v_ULTIMATE.start_f_~a#1_88| 2) 1) (div |v_ULTIMATE.start_f_~a#1_88| 2)) 2147483647) (<= 0 (+ (ite (and (not (= (mod |v_ULTIMATE.start_f_~a#1_88| 2) 0)) (< |v_ULTIMATE.start_f_~a#1_88| 0)) (+ (div |v_ULTIMATE.start_f_~a#1_88| 2) 1) (div |v_ULTIMATE.start_f_~a#1_88| 2)) 2147483648)) (< 1 |v_ULTIMATE.start_f_~a#1_88|))) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_#in~a#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483648)) (<= |ULTIMATE.start_f_#in~a#1| 2147483647) (= |ULTIMATE.start_f_~tmp~0#1| 0))) (not (<= |ULTIMATE.start_f_#t~post0#1| 2147483646)))' at error location [2022-11-03 02:34:34,215 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:34:34,215 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:34:34,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 52 [2022-11-03 02:34:34,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453916831] [2022-11-03 02:34:34,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:34:34,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-11-03 02:34:34,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:34:34,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-11-03 02:34:34,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=797, Invalid=3233, Unknown=2, NotChecked=0, Total=4032 [2022-11-03 02:34:34,220 INFO L87 Difference]: Start difference. First operand 180 states and 194 transitions. Second operand has 54 states, 53 states have (on average 3.4339622641509435) internal successors, (182), 53 states have internal predecessors, (182), 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) [2022-11-03 02:34:35,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:34:35,252 INFO L93 Difference]: Finished difference Result 379 states and 434 transitions. [2022-11-03 02:34:35,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-11-03 02:34:35,256 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 53 states have (on average 3.4339622641509435) internal successors, (182), 53 states have internal predecessors, (182), 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 91 [2022-11-03 02:34:35,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:34:35,258 INFO L225 Difference]: With dead ends: 379 [2022-11-03 02:34:35,259 INFO L226 Difference]: Without dead ends: 378 [2022-11-03 02:34:35,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2194 ImplicationChecksByTransitivity, 18.2s TimeCoverageRelationStatistics Valid=1877, Invalid=6131, Unknown=2, NotChecked=0, Total=8010 [2022-11-03 02:34:35,262 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 595 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 595 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:34:35,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [595 Valid, 223 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:34:35,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2022-11-03 02:34:35,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 376. [2022-11-03 02:34:35,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 375 states have (on average 1.0773333333333333) internal successors, (404), 375 states have internal predecessors, (404), 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) [2022-11-03 02:34:35,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 404 transitions. [2022-11-03 02:34:35,333 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 404 transitions. Word has length 91 [2022-11-03 02:34:35,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:34:35,334 INFO L495 AbstractCegarLoop]: Abstraction has 376 states and 404 transitions. [2022-11-03 02:34:35,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 53 states have (on average 3.4339622641509435) internal successors, (182), 53 states have internal predecessors, (182), 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) [2022-11-03 02:34:35,334 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 404 transitions. [2022-11-03 02:34:35,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-11-03 02:34:35,352 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:34:35,352 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 26, 26, 14, 14, 14, 13, 13, 13, 1, 1] [2022-11-03 02:34:35,395 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71e3eb2-9aab-46cd-bc54-02c1abdb1bb4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-03 02:34:35,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71e3eb2-9aab-46cd-bc54-02c1abdb1bb4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:34:35,570 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-03 02:34:35,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:34:35,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1803313251, now seen corresponding path program 5 times [2022-11-03 02:34:35,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:34:35,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784279147] [2022-11-03 02:34:35,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:34:35,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:34:35,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:34:39,022 INFO L134 CoverageAnalysis]: Checked inductivity of 2067 backedges. 0 proven. 2067 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:34:39,022 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:34:39,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784279147] [2022-11-03 02:34:39,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784279147] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:34:39,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407566631] [2022-11-03 02:34:39,023 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 02:34:39,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:34:39,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71e3eb2-9aab-46cd-bc54-02c1abdb1bb4/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:34:39,026 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71e3eb2-9aab-46cd-bc54-02c1abdb1bb4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:34:39,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71e3eb2-9aab-46cd-bc54-02c1abdb1bb4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-03 02:34:39,215 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2022-11-03 02:34:39,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:34:39,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 55 conjunts are in the unsatisfiable core [2022-11-03 02:34:39,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:34:39,640 INFO L134 CoverageAnalysis]: Checked inductivity of 2067 backedges. 0 proven. 2067 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:34:39,640 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:34:42,980 INFO L134 CoverageAnalysis]: Checked inductivity of 2067 backedges. 0 proven. 2067 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:34:42,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1407566631] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:34:42,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1962617640] [2022-11-03 02:34:42,983 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-11-03 02:34:42,983 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:34:42,984 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:34:42,984 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:34:42,984 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:34:43,628 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:34:49,369 WARN L234 SmtUtils]: Spent 5.59s on a formula simplification. DAG size of input: 65 DAG size of output: 58 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:34:56,091 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4660#(and (or (and (<= |ULTIMATE.start_f_~a#1| 2147483647) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (not (= |ULTIMATE.start_f_~tmp~0#1| 0)) (<= 0 (+ |ULTIMATE.start_f_#in~a#1| 2147483648)) (< 0 |ULTIMATE.start_f_~a#1|) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483648)) (<= |ULTIMATE.start_f_#in~a#1| 2147483647) (= (ite (and (not (= (mod (+ |ULTIMATE.start_f_~a#1| 1) 2) 0)) (< (+ |ULTIMATE.start_f_~a#1| 1) 0)) (+ (mod (+ |ULTIMATE.start_f_~a#1| 1) 2) (- 2)) (mod (+ |ULTIMATE.start_f_~a#1| 1) 2)) |ULTIMATE.start_f_~tmp~0#1|)) (and (exists ((|v_ULTIMATE.start_f_~a#1_125| Int)) (and (= |ULTIMATE.start_f_~a#1| (ite (and (< |v_ULTIMATE.start_f_~a#1_125| 0) (not (= (mod |v_ULTIMATE.start_f_~a#1_125| 2) 0))) (+ (div |v_ULTIMATE.start_f_~a#1_125| 2) 1) (div |v_ULTIMATE.start_f_~a#1_125| 2))) (= |ULTIMATE.start_f_~tmp~0#1| (ite (and (< |v_ULTIMATE.start_f_~a#1_125| 0) (not (= (mod |v_ULTIMATE.start_f_~a#1_125| 2) 0))) (+ (- 2) (mod |v_ULTIMATE.start_f_~a#1_125| 2)) (mod |v_ULTIMATE.start_f_~a#1_125| 2))) (<= (ite (and (< |v_ULTIMATE.start_f_~a#1_125| 0) (not (= (mod |v_ULTIMATE.start_f_~a#1_125| 2) 0))) (+ (div |v_ULTIMATE.start_f_~a#1_125| 2) 1) (div |v_ULTIMATE.start_f_~a#1_125| 2)) 2147483647) (< 1 |v_ULTIMATE.start_f_~a#1_125|) (<= 0 (+ (ite (and (< |v_ULTIMATE.start_f_~a#1_125| 0) (not (= (mod |v_ULTIMATE.start_f_~a#1_125| 2) 0))) (+ (div |v_ULTIMATE.start_f_~a#1_125| 2) 1) (div |v_ULTIMATE.start_f_~a#1_125| 2)) 2147483648)))) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_#in~a#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483648)) (<= |ULTIMATE.start_f_#in~a#1| 2147483647) (= |ULTIMATE.start_f_~tmp~0#1| 0))) (= |ULTIMATE.start_f_~count~0#1| |ULTIMATE.start_f_#t~post0#1|) (not (<= |ULTIMATE.start_f_#t~post0#1| 2147483646)))' at error location [2022-11-03 02:34:56,092 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:34:56,092 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:34:56,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54, 54] total 108 [2022-11-03 02:34:56,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077808548] [2022-11-03 02:34:56,093 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:34:56,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 110 states [2022-11-03 02:34:56,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:34:56,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2022-11-03 02:34:56,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3121, Invalid=11157, Unknown=2, NotChecked=0, Total=14280 [2022-11-03 02:34:56,100 INFO L87 Difference]: Start difference. First operand 376 states and 404 transitions. Second operand has 110 states, 109 states have (on average 3.467889908256881) internal successors, (378), 109 states have internal predecessors, (378), 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) [2022-11-03 02:34:59,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:34:59,044 INFO L93 Difference]: Finished difference Result 771 states and 882 transitions. [2022-11-03 02:34:59,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2022-11-03 02:34:59,044 INFO L78 Accepts]: Start accepts. Automaton has has 110 states, 109 states have (on average 3.467889908256881) internal successors, (378), 109 states have internal predecessors, (378), 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 189 [2022-11-03 02:34:59,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:34:59,048 INFO L225 Difference]: With dead ends: 771 [2022-11-03 02:34:59,048 INFO L226 Difference]: Without dead ends: 770 [2022-11-03 02:34:59,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 673 GetRequests, 501 SyntacticMatches, 0 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7598 ImplicationChecksByTransitivity, 19.0s TimeCoverageRelationStatistics Valid=7631, Invalid=22469, Unknown=2, NotChecked=0, Total=30102 [2022-11-03 02:34:59,058 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 1530 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1530 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:34:59,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1530 Valid, 418 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:34:59,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 770 states. [2022-11-03 02:34:59,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 770 to 768. [2022-11-03 02:34:59,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 768 states, 767 states have (on average 1.074315514993481) internal successors, (824), 767 states have internal predecessors, (824), 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) [2022-11-03 02:34:59,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 768 states to 768 states and 824 transitions. [2022-11-03 02:34:59,110 INFO L78 Accepts]: Start accepts. Automaton has 768 states and 824 transitions. Word has length 189 [2022-11-03 02:34:59,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:34:59,111 INFO L495 AbstractCegarLoop]: Abstraction has 768 states and 824 transitions. [2022-11-03 02:34:59,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 110 states, 109 states have (on average 3.467889908256881) internal successors, (378), 109 states have internal predecessors, (378), 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) [2022-11-03 02:34:59,112 INFO L276 IsEmpty]: Start isEmpty. Operand 768 states and 824 transitions. [2022-11-03 02:34:59,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2022-11-03 02:34:59,117 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:34:59,117 INFO L195 NwaCegarLoop]: trace histogram [55, 55, 54, 54, 28, 28, 28, 27, 27, 27, 1, 1] [2022-11-03 02:34:59,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71e3eb2-9aab-46cd-bc54-02c1abdb1bb4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-03 02:34:59,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71e3eb2-9aab-46cd-bc54-02c1abdb1bb4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-03 02:34:59,332 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-03 02:34:59,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:34:59,332 INFO L85 PathProgramCache]: Analyzing trace with hash -960210697, now seen corresponding path program 6 times [2022-11-03 02:34:59,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:34:59,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073501246] [2022-11-03 02:34:59,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:34:59,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:34:59,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:35:10,752 INFO L134 CoverageAnalysis]: Checked inductivity of 8829 backedges. 0 proven. 8829 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:35:10,753 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:35:10,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073501246] [2022-11-03 02:35:10,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073501246] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:35:10,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [373337430] [2022-11-03 02:35:10,753 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-03 02:35:10,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:35:10,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71e3eb2-9aab-46cd-bc54-02c1abdb1bb4/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:35:10,754 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71e3eb2-9aab-46cd-bc54-02c1abdb1bb4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:35:10,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71e3eb2-9aab-46cd-bc54-02c1abdb1bb4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-03 02:35:10,996 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-03 02:35:10,996 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:35:11,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 804 conjuncts, 111 conjunts are in the unsatisfiable core [2022-11-03 02:35:11,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:35:11,736 INFO L134 CoverageAnalysis]: Checked inductivity of 8829 backedges. 0 proven. 8829 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:35:11,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:35:24,185 INFO L134 CoverageAnalysis]: Checked inductivity of 8829 backedges. 0 proven. 8829 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:35:24,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [373337430] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:35:24,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2049010817] [2022-11-03 02:35:24,187 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-11-03 02:35:24,188 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:35:24,188 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:35:24,188 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:35:24,189 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:35:24,756 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:35:32,750 WARN L234 SmtUtils]: Spent 7.69s on a formula simplification. DAG size of input: 65 DAG size of output: 59 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:35:37,744 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9061#(and (or (and (not (= |ULTIMATE.start_f_~tmp~0#1| 0)) (< 0 |ULTIMATE.start_f_~a#1|) (= (ite (and (not (= (mod (+ |ULTIMATE.start_f_~a#1| 1) 2) 0)) (< (+ |ULTIMATE.start_f_~a#1| 1) 0)) (+ (mod (+ |ULTIMATE.start_f_~a#1| 1) 2) (- 2)) (mod (+ |ULTIMATE.start_f_~a#1| 1) 2)) |ULTIMATE.start_f_~tmp~0#1|)) (and (exists ((|v_ULTIMATE.start_f_~a#1_190| Int)) (and (< 1 |v_ULTIMATE.start_f_~a#1_190|) (<= (ite (and (not (= (mod |v_ULTIMATE.start_f_~a#1_190| 2) 0)) (< |v_ULTIMATE.start_f_~a#1_190| 0)) (+ (div |v_ULTIMATE.start_f_~a#1_190| 2) 1) (div |v_ULTIMATE.start_f_~a#1_190| 2)) 2147483647) (<= 0 (+ (ite (and (not (= (mod |v_ULTIMATE.start_f_~a#1_190| 2) 0)) (< |v_ULTIMATE.start_f_~a#1_190| 0)) (+ (div |v_ULTIMATE.start_f_~a#1_190| 2) 1) (div |v_ULTIMATE.start_f_~a#1_190| 2)) 2147483648)) (= (ite (and (not (= (mod |v_ULTIMATE.start_f_~a#1_190| 2) 0)) (< |v_ULTIMATE.start_f_~a#1_190| 0)) (+ (div |v_ULTIMATE.start_f_~a#1_190| 2) 1) (div |v_ULTIMATE.start_f_~a#1_190| 2)) |ULTIMATE.start_f_~a#1|) (= (ite (and (not (= (mod |v_ULTIMATE.start_f_~a#1_190| 2) 0)) (< |v_ULTIMATE.start_f_~a#1_190| 0)) (+ (- 2) (mod |v_ULTIMATE.start_f_~a#1_190| 2)) (mod |v_ULTIMATE.start_f_~a#1_190| 2)) |ULTIMATE.start_f_~tmp~0#1|))) (= |ULTIMATE.start_f_~tmp~0#1| 0))) (<= |ULTIMATE.start_f_~a#1| 2147483647) (= |ULTIMATE.start_f_~count~0#1| |ULTIMATE.start_f_#t~post0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_#in~a#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483648)) (not (<= |ULTIMATE.start_f_#t~post0#1| 2147483646)) (<= |ULTIMATE.start_f_#in~a#1| 2147483647))' at error location [2022-11-03 02:35:37,745 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:35:37,745 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:35:37,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [110, 110, 110] total 220 [2022-11-03 02:35:37,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110376775] [2022-11-03 02:35:37,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:35:37,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 222 states [2022-11-03 02:35:37,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:35:37,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 222 interpolants. [2022-11-03 02:35:37,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12473, Invalid=41119, Unknown=0, NotChecked=0, Total=53592 [2022-11-03 02:35:37,758 INFO L87 Difference]: Start difference. First operand 768 states and 824 transitions. Second operand has 222 states, 221 states have (on average 3.484162895927602) internal successors, (770), 221 states have internal predecessors, (770), 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) [2022-11-03 02:35:50,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:35:50,653 INFO L93 Difference]: Finished difference Result 1555 states and 1778 transitions. [2022-11-03 02:35:50,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 223 states. [2022-11-03 02:35:50,654 INFO L78 Accepts]: Start accepts. Automaton has has 222 states, 221 states have (on average 3.484162895927602) internal successors, (770), 221 states have internal predecessors, (770), 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 385 [2022-11-03 02:35:50,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:35:50,660 INFO L225 Difference]: With dead ends: 1555 [2022-11-03 02:35:50,661 INFO L226 Difference]: Without dead ends: 1554 [2022-11-03 02:35:50,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1373 GetRequests, 1033 SyntacticMatches, 0 SemanticMatches, 340 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27816 ImplicationChecksByTransitivity, 38.2s TimeCoverageRelationStatistics Valid=30899, Invalid=85723, Unknown=0, NotChecked=0, Total=116622 [2022-11-03 02:35:50,672 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 3436 mSDsluCounter, 805 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3436 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:35:50,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3436 Valid, 813 Invalid, 624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-03 02:35:50,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2022-11-03 02:35:50,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1552. [2022-11-03 02:35:50,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1552 states, 1551 states have (on average 1.072856221792392) internal successors, (1664), 1551 states have internal predecessors, (1664), 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) [2022-11-03 02:35:50,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1552 states to 1552 states and 1664 transitions. [2022-11-03 02:35:50,736 INFO L78 Accepts]: Start accepts. Automaton has 1552 states and 1664 transitions. Word has length 385 [2022-11-03 02:35:50,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:35:50,737 INFO L495 AbstractCegarLoop]: Abstraction has 1552 states and 1664 transitions. [2022-11-03 02:35:50,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 222 states, 221 states have (on average 3.484162895927602) internal successors, (770), 221 states have internal predecessors, (770), 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) [2022-11-03 02:35:50,738 INFO L276 IsEmpty]: Start isEmpty. Operand 1552 states and 1664 transitions. [2022-11-03 02:35:50,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 778 [2022-11-03 02:35:50,764 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:35:50,764 INFO L195 NwaCegarLoop]: trace histogram [111, 111, 110, 110, 56, 56, 56, 55, 55, 55, 1, 1] [2022-11-03 02:35:50,804 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71e3eb2-9aab-46cd-bc54-02c1abdb1bb4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-03 02:35:50,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71e3eb2-9aab-46cd-bc54-02c1abdb1bb4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-03 02:35:50,980 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-03 02:35:50,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:35:50,981 INFO L85 PathProgramCache]: Analyzing trace with hash -234722273, now seen corresponding path program 7 times [2022-11-03 02:35:50,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:35:50,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515546466] [2022-11-03 02:35:50,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:35:50,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:35:52,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:36:20,224 INFO L134 CoverageAnalysis]: Checked inductivity of 36465 backedges. 28416 proven. 524 refuted. 0 times theorem prover too weak. 7525 trivial. 0 not checked. [2022-11-03 02:36:20,225 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:36:20,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515546466] [2022-11-03 02:36:20,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515546466] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:36:20,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589115018] [2022-11-03 02:36:20,226 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-03 02:36:20,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:36:20,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71e3eb2-9aab-46cd-bc54-02c1abdb1bb4/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:36:20,228 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71e3eb2-9aab-46cd-bc54-02c1abdb1bb4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:36:20,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71e3eb2-9aab-46cd-bc54-02c1abdb1bb4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-03 02:36:20,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:36:20,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 1616 conjuncts, 223 conjunts are in the unsatisfiable core [2022-11-03 02:36:20,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:36:52,898 INFO L134 CoverageAnalysis]: Checked inductivity of 36465 backedges. 0 proven. 36465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:36:52,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:37:51,951 INFO L134 CoverageAnalysis]: Checked inductivity of 36465 backedges. 0 proven. 36465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:37:51,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589115018] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:37:51,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [926202851] [2022-11-03 02:37:51,954 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-11-03 02:37:51,954 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:37:51,955 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:37:51,955 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:37:51,955 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:37:52,611 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:37:58,795 WARN L234 SmtUtils]: Spent 5.48s on a formula simplification. DAG size of input: 65 DAG size of output: 58 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:38:09,101 WARN L234 SmtUtils]: Spent 5.42s on a formula simplification. DAG size of input: 62 DAG size of output: 56 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:38:15,325 WARN L234 SmtUtils]: Spent 5.49s on a formula simplification. DAG size of input: 64 DAG size of output: 58 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:38:16,156 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '18034#(and (or (and (<= |ULTIMATE.start_f_~a#1| 2147483647) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (not (= |ULTIMATE.start_f_~tmp~0#1| 0)) (<= 0 (+ |ULTIMATE.start_f_#in~a#1| 2147483648)) (< 0 |ULTIMATE.start_f_~a#1|) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483648)) (<= |ULTIMATE.start_f_#in~a#1| 2147483647) (= (ite (and (not (= (mod (+ |ULTIMATE.start_f_~a#1| 1) 2) 0)) (< (+ |ULTIMATE.start_f_~a#1| 1) 0)) (+ (mod (+ |ULTIMATE.start_f_~a#1| 1) 2) (- 2)) (mod (+ |ULTIMATE.start_f_~a#1| 1) 2)) |ULTIMATE.start_f_~tmp~0#1|)) (and (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_#in~a#1| 2147483648)) (exists ((|v_ULTIMATE.start_f_~a#1_311| Int)) (and (< 1 |v_ULTIMATE.start_f_~a#1_311|) (= |ULTIMATE.start_f_~a#1| (ite (and (not (= (mod |v_ULTIMATE.start_f_~a#1_311| 2) 0)) (< |v_ULTIMATE.start_f_~a#1_311| 0)) (+ (div |v_ULTIMATE.start_f_~a#1_311| 2) 1) (div |v_ULTIMATE.start_f_~a#1_311| 2))) (<= (ite (and (not (= (mod |v_ULTIMATE.start_f_~a#1_311| 2) 0)) (< |v_ULTIMATE.start_f_~a#1_311| 0)) (+ (div |v_ULTIMATE.start_f_~a#1_311| 2) 1) (div |v_ULTIMATE.start_f_~a#1_311| 2)) 2147483647) (<= 0 (+ (ite (and (not (= (mod |v_ULTIMATE.start_f_~a#1_311| 2) 0)) (< |v_ULTIMATE.start_f_~a#1_311| 0)) (+ (div |v_ULTIMATE.start_f_~a#1_311| 2) 1) (div |v_ULTIMATE.start_f_~a#1_311| 2)) 2147483648)) (= |ULTIMATE.start_f_~tmp~0#1| (ite (and (not (= (mod |v_ULTIMATE.start_f_~a#1_311| 2) 0)) (< |v_ULTIMATE.start_f_~a#1_311| 0)) (+ (- 2) (mod |v_ULTIMATE.start_f_~a#1_311| 2)) (mod |v_ULTIMATE.start_f_~a#1_311| 2))))) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483648)) (<= |ULTIMATE.start_f_#in~a#1| 2147483647) (= |ULTIMATE.start_f_~tmp~0#1| 0))) (= |ULTIMATE.start_f_~count~0#1| |ULTIMATE.start_f_#t~post0#1|) (not (<= |ULTIMATE.start_f_#t~post0#1| 2147483646)))' at error location [2022-11-03 02:38:16,156 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:38:16,156 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:38:16,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 222, 222] total 537 [2022-11-03 02:38:16,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491204580] [2022-11-03 02:38:16,157 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:38:16,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 538 states [2022-11-03 02:38:16,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:38:16,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 538 interpolants. [2022-11-03 02:38:16,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53329, Invalid=246427, Unknown=0, NotChecked=0, Total=299756 [2022-11-03 02:38:16,193 INFO L87 Difference]: Start difference. First operand 1552 states and 1664 transitions. Second operand has 538 states, 538 states have (on average 3.693308550185874) internal successors, (1987), 537 states have internal predecessors, (1987), 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)