./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-restricted-15/b.09_assume.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f 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_546320bb-bb80-4a83-9d53-5f10c212d0cb/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_546320bb-bb80-4a83-9d53-5f10c212d0cb/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_546320bb-bb80-4a83-9d53-5f10c212d0cb/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_546320bb-bb80-4a83-9d53-5f10c212d0cb/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-restricted-15/b.09_assume.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_546320bb-bb80-4a83-9d53-5f10c212d0cb/bin/utaipan-Xvt2sAort0/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_546320bb-bb80-4a83-9d53-5f10c212d0cb/bin/utaipan-Xvt2sAort0 --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 ecd53fc1983ec7221b54e3467b23316f260ef4286a86531362dd236dd661ea1a --- 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-e04fb08 [2022-11-16 16:28:14,924 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 16:28:14,926 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 16:28:14,969 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 16:28:14,971 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 16:28:14,975 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 16:28:14,976 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 16:28:14,980 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 16:28:14,982 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 16:28:14,988 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 16:28:14,990 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 16:28:14,991 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 16:28:14,992 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 16:28:14,997 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 16:28:14,998 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 16:28:15,000 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 16:28:15,002 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 16:28:15,003 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 16:28:15,005 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 16:28:15,007 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 16:28:15,011 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 16:28:15,013 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 16:28:15,015 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 16:28:15,016 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 16:28:15,019 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 16:28:15,019 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 16:28:15,020 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 16:28:15,021 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 16:28:15,021 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 16:28:15,022 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 16:28:15,022 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 16:28:15,023 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 16:28:15,024 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 16:28:15,025 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 16:28:15,026 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 16:28:15,026 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 16:28:15,027 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 16:28:15,027 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 16:28:15,028 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 16:28:15,028 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 16:28:15,029 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 16:28:15,030 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_546320bb-bb80-4a83-9d53-5f10c212d0cb/bin/utaipan-Xvt2sAort0/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-11-16 16:28:15,058 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 16:28:15,062 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 16:28:15,063 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 16:28:15,070 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 16:28:15,071 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 16:28:15,071 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 16:28:15,072 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 16:28:15,072 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 16:28:15,072 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 16:28:15,072 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 16:28:15,073 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 16:28:15,074 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 16:28:15,074 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 16:28:15,074 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 16:28:15,074 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 16:28:15,075 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 16:28:15,075 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 16:28:15,075 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 16:28:15,076 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 16:28:15,076 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 16:28:15,076 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 16:28:15,077 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 16:28:15,077 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 16:28:15,077 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 16:28:15,077 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 16:28:15,077 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 16:28:15,078 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 16:28:15,078 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 16:28:15,078 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 16:28:15,078 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 16:28:15,079 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 16:28:15,079 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 16:28:15,079 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 16:28:15,080 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 16:28:15,080 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 16:28:15,080 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 16:28:15,080 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 16:28:15,081 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 16:28:15,081 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 16:28:15,081 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 16:28:15,081 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_546320bb-bb80-4a83-9d53-5f10c212d0cb/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_546320bb-bb80-4a83-9d53-5f10c212d0cb/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ecd53fc1983ec7221b54e3467b23316f260ef4286a86531362dd236dd661ea1a [2022-11-16 16:28:15,375 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 16:28:15,406 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 16:28:15,408 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 16:28:15,410 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 16:28:15,411 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 16:28:15,413 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_546320bb-bb80-4a83-9d53-5f10c212d0cb/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/termination-restricted-15/b.09_assume.c [2022-11-16 16:28:15,488 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_546320bb-bb80-4a83-9d53-5f10c212d0cb/bin/utaipan-Xvt2sAort0/data/85653b38f/2cc72ed6867a45f18d82a952542622b5/FLAG132dc4527 [2022-11-16 16:28:16,020 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 16:28:16,020 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_546320bb-bb80-4a83-9d53-5f10c212d0cb/sv-benchmarks/c/termination-restricted-15/b.09_assume.c [2022-11-16 16:28:16,028 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_546320bb-bb80-4a83-9d53-5f10c212d0cb/bin/utaipan-Xvt2sAort0/data/85653b38f/2cc72ed6867a45f18d82a952542622b5/FLAG132dc4527 [2022-11-16 16:28:16,387 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_546320bb-bb80-4a83-9d53-5f10c212d0cb/bin/utaipan-Xvt2sAort0/data/85653b38f/2cc72ed6867a45f18d82a952542622b5 [2022-11-16 16:28:16,391 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 16:28:16,392 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 16:28:16,395 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 16:28:16,396 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 16:28:16,400 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 16:28:16,400 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:28:16" (1/1) ... [2022-11-16 16:28:16,403 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d7ee74f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:28:16, skipping insertion in model container [2022-11-16 16:28:16,403 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:28:16" (1/1) ... [2022-11-16 16:28:16,411 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 16:28:16,425 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 16:28:16,680 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 16:28:16,683 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 16:28:16,703 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 16:28:16,715 INFO L208 MainTranslator]: Completed translation [2022-11-16 16:28:16,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:28:16 WrapperNode [2022-11-16 16:28:16,715 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 16:28:16,717 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 16:28:16,717 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 16:28:16,717 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 16:28:16,725 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:28:16" (1/1) ... [2022-11-16 16:28:16,731 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:28:16" (1/1) ... [2022-11-16 16:28:16,748 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 27 [2022-11-16 16:28:16,749 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 16:28:16,750 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 16:28:16,750 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 16:28:16,751 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 16:28:16,759 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:28:16" (1/1) ... [2022-11-16 16:28:16,760 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:28:16" (1/1) ... [2022-11-16 16:28:16,761 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:28:16" (1/1) ... [2022-11-16 16:28:16,762 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:28:16" (1/1) ... [2022-11-16 16:28:16,764 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:28:16" (1/1) ... [2022-11-16 16:28:16,769 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:28:16" (1/1) ... [2022-11-16 16:28:16,774 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:28:16" (1/1) ... [2022-11-16 16:28:16,775 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:28:16" (1/1) ... [2022-11-16 16:28:16,776 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 16:28:16,780 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 16:28:16,780 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 16:28:16,780 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 16:28:16,782 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:28:16" (1/1) ... [2022-11-16 16:28:16,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 16:28:16,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_546320bb-bb80-4a83-9d53-5f10c212d0cb/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:28:16,813 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_546320bb-bb80-4a83-9d53-5f10c212d0cb/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 16:28:16,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_546320bb-bb80-4a83-9d53-5f10c212d0cb/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 16:28:16,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 16:28:16,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 16:28:16,939 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 16:28:16,941 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 16:28:17,041 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 16:28:17,060 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 16:28:17,060 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 16:28:17,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 04:28:17 BoogieIcfgContainer [2022-11-16 16:28:17,062 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 16:28:17,065 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 16:28:17,065 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 16:28:17,071 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 16:28:17,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 04:28:16" (1/3) ... [2022-11-16 16:28:17,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bb1eee0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:28:17, skipping insertion in model container [2022-11-16 16:28:17,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:28:16" (2/3) ... [2022-11-16 16:28:17,074 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bb1eee0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:28:17, skipping insertion in model container [2022-11-16 16:28:17,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 04:28:17" (3/3) ... [2022-11-16 16:28:17,076 INFO L112 eAbstractionObserver]: Analyzing ICFG b.09_assume.c [2022-11-16 16:28:17,096 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 16:28:17,096 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-16 16:28:17,141 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 16:28:17,147 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;@1b9f43d4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 16:28:17,148 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-16 16:28:17,152 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:28:17,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-16 16:28:17,158 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:28:17,158 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-16 16:28:17,159 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-16 16:28:17,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:28:17,164 INFO L85 PathProgramCache]: Analyzing trace with hash 65732952, now seen corresponding path program 1 times [2022-11-16 16:28:17,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:28:17,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398929425] [2022-11-16 16:28:17,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:28:17,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:28:17,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:28:17,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:28:17,332 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:28:17,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398929425] [2022-11-16 16:28:17,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398929425] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:28:17,333 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:28:17,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 16:28:17,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294046682] [2022-11-16 16:28:17,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:28:17,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 16:28:17,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:28:17,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 16:28:17,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:28:17,370 INFO L87 Difference]: Start difference. First operand has 14 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:28:17,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:28:17,433 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2022-11-16 16:28:17,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 16:28:17,436 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-16 16:28:17,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:28:17,457 INFO L225 Difference]: With dead ends: 25 [2022-11-16 16:28:17,457 INFO L226 Difference]: Without dead ends: 20 [2022-11-16 16:28:17,460 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 [2022-11-16 16:28:17,463 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 10 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 16:28:17,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 17 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 16:28:17,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-16 16:28:17,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 17. [2022-11-16 16:28:17,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 16 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) [2022-11-16 16:28:17,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2022-11-16 16:28:17,519 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 5 [2022-11-16 16:28:17,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:28:17,520 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2022-11-16 16:28:17,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:28:17,522 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2022-11-16 16:28:17,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-16 16:28:17,523 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:28:17,523 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-16 16:28:17,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 16:28:17,524 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-16 16:28:17,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:28:17,525 INFO L85 PathProgramCache]: Analyzing trace with hash 65733009, now seen corresponding path program 1 times [2022-11-16 16:28:17,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:28:17,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48325625] [2022-11-16 16:28:17,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:28:17,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:28:17,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:28:17,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:28:17,598 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:28:17,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48325625] [2022-11-16 16:28:17,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48325625] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:28:17,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:28:17,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 16:28:17,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413835709] [2022-11-16 16:28:17,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:28:17,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 16:28:17,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:28:17,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 16:28:17,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:28:17,607 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:28:17,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:28:17,631 INFO L93 Difference]: Finished difference Result 17 states and 21 transitions. [2022-11-16 16:28:17,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 16:28:17,632 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-16 16:28:17,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:28:17,632 INFO L225 Difference]: With dead ends: 17 [2022-11-16 16:28:17,632 INFO L226 Difference]: Without dead ends: 16 [2022-11-16 16:28:17,633 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 [2022-11-16 16:28:17,634 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 6 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 16:28:17,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 5 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 16:28:17,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-11-16 16:28:17,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-11-16 16:28:17,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 15 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:28:17,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2022-11-16 16:28:17,639 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 5 [2022-11-16 16:28:17,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:28:17,639 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2022-11-16 16:28:17,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:28:17,640 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2022-11-16 16:28:17,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-16 16:28:17,640 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:28:17,640 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-16 16:28:17,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 16:28:17,641 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-16 16:28:17,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:28:17,642 INFO L85 PathProgramCache]: Analyzing trace with hash 2037721570, now seen corresponding path program 1 times [2022-11-16 16:28:17,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:28:17,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052954179] [2022-11-16 16:28:17,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:28:17,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:28:17,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:28:17,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:28:17,676 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:28:17,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052954179] [2022-11-16 16:28:17,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052954179] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:28:17,677 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:28:17,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 16:28:17,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682844567] [2022-11-16 16:28:17,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:28:17,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 16:28:17,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:28:17,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 16:28:17,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:28:17,679 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:28:17,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:28:17,688 INFO L93 Difference]: Finished difference Result 16 states and 19 transitions. [2022-11-16 16:28:17,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 16:28:17,689 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-16 16:28:17,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:28:17,690 INFO L225 Difference]: With dead ends: 16 [2022-11-16 16:28:17,690 INFO L226 Difference]: Without dead ends: 15 [2022-11-16 16:28:17,690 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 [2022-11-16 16:28:17,692 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 5 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 16:28:17,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 7 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 16:28:17,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-11-16 16:28:17,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-11-16 16:28:17,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:28:17,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2022-11-16 16:28:17,697 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 6 [2022-11-16 16:28:17,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:28:17,698 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 18 transitions. [2022-11-16 16:28:17,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:28:17,698 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2022-11-16 16:28:17,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-16 16:28:17,698 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:28:17,699 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-16 16:28:17,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 16:28:17,699 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-16 16:28:17,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:28:17,700 INFO L85 PathProgramCache]: Analyzing trace with hash 2037723332, now seen corresponding path program 1 times [2022-11-16 16:28:17,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:28:17,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779215177] [2022-11-16 16:28:17,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:28:17,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:28:17,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:28:17,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:28:17,730 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:28:17,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779215177] [2022-11-16 16:28:17,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779215177] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:28:17,731 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:28:17,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 16:28:17,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877060235] [2022-11-16 16:28:17,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:28:17,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 16:28:17,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:28:17,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 16:28:17,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:28:17,733 INFO L87 Difference]: Start difference. First operand 15 states and 18 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:28:17,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:28:17,745 INFO L93 Difference]: Finished difference Result 15 states and 18 transitions. [2022-11-16 16:28:17,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 16:28:17,746 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-16 16:28:17,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:28:17,746 INFO L225 Difference]: With dead ends: 15 [2022-11-16 16:28:17,746 INFO L226 Difference]: Without dead ends: 14 [2022-11-16 16:28:17,747 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 [2022-11-16 16:28:17,748 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 16:28:17,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 16:28:17,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-16 16:28:17,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-11-16 16:28:17,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:28:17,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2022-11-16 16:28:17,753 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 6 [2022-11-16 16:28:17,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:28:17,753 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2022-11-16 16:28:17,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:28:17,754 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2022-11-16 16:28:17,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-16 16:28:17,754 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:28:17,755 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-16 16:28:17,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 16:28:17,755 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-16 16:28:17,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:28:17,756 INFO L85 PathProgramCache]: Analyzing trace with hash 695574003, now seen corresponding path program 1 times [2022-11-16 16:28:17,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:28:17,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565678098] [2022-11-16 16:28:17,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:28:17,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:28:17,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:28:17,794 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:28:17,794 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:28:17,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565678098] [2022-11-16 16:28:17,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565678098] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:28:17,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:28:17,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 16:28:17,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875974640] [2022-11-16 16:28:17,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:28:17,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 16:28:17,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:28:17,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 16:28:17,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:28:17,809 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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) [2022-11-16 16:28:17,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:28:17,829 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2022-11-16 16:28:17,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 16:28:17,830 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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 9 [2022-11-16 16:28:17,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:28:17,830 INFO L225 Difference]: With dead ends: 21 [2022-11-16 16:28:17,831 INFO L226 Difference]: Without dead ends: 14 [2022-11-16 16:28:17,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:28:17,832 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 2 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 16:28:17,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 7 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 16:28:17,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-16 16:28:17,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-11-16 16:28:17,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.1538461538461537) 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) [2022-11-16 16:28:17,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2022-11-16 16:28:17,838 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 9 [2022-11-16 16:28:17,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:28:17,853 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2022-11-16 16:28:17,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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) [2022-11-16 16:28:17,853 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-11-16 16:28:17,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 16:28:17,854 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:28:17,854 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:28:17,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 16:28:17,855 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-16 16:28:17,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:28:17,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1568224817, now seen corresponding path program 1 times [2022-11-16 16:28:17,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:28:17,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849383847] [2022-11-16 16:28:17,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:28:17,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:28:17,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:28:17,909 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:28:17,909 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:28:17,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849383847] [2022-11-16 16:28:17,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849383847] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:28:17,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149314655] [2022-11-16 16:28:17,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:28:17,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:28:17,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_546320bb-bb80-4a83-9d53-5f10c212d0cb/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:28:17,915 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_546320bb-bb80-4a83-9d53-5f10c212d0cb/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:28:17,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_546320bb-bb80-4a83-9d53-5f10c212d0cb/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 16:28:17,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:28:17,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 16:28:17,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:28:18,024 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:28:18,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:28:18,064 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:28:18,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [149314655] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:28:18,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1122348852] [2022-11-16 16:28:18,084 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-16 16:28:18,084 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 16:28:18,087 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 16:28:18,093 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 16:28:18,094 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 16:28:18,365 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 16:28:18,689 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '291#(and (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 1)) (<= |ULTIMATE.start_main_~x~0#1| 2147483646) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_~c~0#1|))' at error location [2022-11-16 16:28:18,689 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 16:28:18,690 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 16:28:18,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2022-11-16 16:28:18,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715711165] [2022-11-16 16:28:18,690 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 16:28:18,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 16:28:18,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:28:18,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 16:28:18,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-11-16 16:28:18,692 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 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) [2022-11-16 16:28:18,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:28:18,720 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2022-11-16 16:28:18,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 16:28:18,721 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 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) Word has length 11 [2022-11-16 16:28:18,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:28:18,722 INFO L225 Difference]: With dead ends: 33 [2022-11-16 16:28:18,722 INFO L226 Difference]: Without dead ends: 32 [2022-11-16 16:28:18,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-11-16 16:28:18,724 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 22 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 16:28:18,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 23 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 16:28:18,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-11-16 16:28:18,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-11-16 16:28:18,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.064516129032258) internal successors, (33), 31 states have internal predecessors, (33), 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) [2022-11-16 16:28:18,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2022-11-16 16:28:18,730 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 11 [2022-11-16 16:28:18,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:28:18,730 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2022-11-16 16:28:18,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 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) [2022-11-16 16:28:18,737 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2022-11-16 16:28:18,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-16 16:28:18,740 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:28:18,740 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 1, 1, 1, 1] [2022-11-16 16:28:18,747 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_546320bb-bb80-4a83-9d53-5f10c212d0cb/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-16 16:28:18,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_546320bb-bb80-4a83-9d53-5f10c212d0cb/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:28:18,941 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-16 16:28:18,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:28:18,942 INFO L85 PathProgramCache]: Analyzing trace with hash -457759820, now seen corresponding path program 2 times [2022-11-16 16:28:18,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:28:18,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088901773] [2022-11-16 16:28:18,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:28:18,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:28:18,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:28:19,153 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:28:19,153 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:28:19,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088901773] [2022-11-16 16:28:19,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088901773] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:28:19,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898793045] [2022-11-16 16:28:19,154 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 16:28:19,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:28:19,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_546320bb-bb80-4a83-9d53-5f10c212d0cb/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:28:19,159 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_546320bb-bb80-4a83-9d53-5f10c212d0cb/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:28:19,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_546320bb-bb80-4a83-9d53-5f10c212d0cb/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 16:28:19,219 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-16 16:28:19,219 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 16:28:19,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 16:28:19,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:28:19,301 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:28:19,301 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:28:19,428 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:28:19,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898793045] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:28:19,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1321196559] [2022-11-16 16:28:19,433 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-16 16:28:19,433 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 16:28:19,434 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 16:28:19,434 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 16:28:19,435 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 16:28:19,629 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 16:28:20,044 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '553#(and (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 1)) (<= |ULTIMATE.start_main_~x~0#1| 2147483646) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_~c~0#1|))' at error location [2022-11-16 16:28:20,045 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 16:28:20,045 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 16:28:20,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-16 16:28:20,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529309783] [2022-11-16 16:28:20,045 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 16:28:20,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 16:28:20,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:28:20,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 16:28:20,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2022-11-16 16:28:20,047 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand has 12 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 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) [2022-11-16 16:28:20,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:28:20,130 INFO L93 Difference]: Finished difference Result 69 states and 75 transitions. [2022-11-16 16:28:20,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 16:28:20,131 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 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 29 [2022-11-16 16:28:20,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:28:20,132 INFO L225 Difference]: With dead ends: 69 [2022-11-16 16:28:20,132 INFO L226 Difference]: Without dead ends: 68 [2022-11-16 16:28:20,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 69 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2022-11-16 16:28:20,138 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 40 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 16:28:20,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 47 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 16:28:20,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-11-16 16:28:20,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2022-11-16 16:28:20,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.0298507462686568) internal successors, (69), 67 states have internal predecessors, (69), 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) [2022-11-16 16:28:20,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 69 transitions. [2022-11-16 16:28:20,154 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 69 transitions. Word has length 29 [2022-11-16 16:28:20,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:28:20,155 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 69 transitions. [2022-11-16 16:28:20,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 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) [2022-11-16 16:28:20,155 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 69 transitions. [2022-11-16 16:28:20,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-16 16:28:20,162 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:28:20,162 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 1, 1, 1, 1] [2022-11-16 16:28:20,176 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_546320bb-bb80-4a83-9d53-5f10c212d0cb/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 16:28:20,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_546320bb-bb80-4a83-9d53-5f10c212d0cb/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:28:20,368 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-16 16:28:20,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:28:20,368 INFO L85 PathProgramCache]: Analyzing trace with hash 136624574, now seen corresponding path program 3 times [2022-11-16 16:28:20,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:28:20,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065143145] [2022-11-16 16:28:20,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:28:20,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:28:20,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:28:20,716 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:28:20,716 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:28:20,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065143145] [2022-11-16 16:28:20,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065143145] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:28:20,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708399414] [2022-11-16 16:28:20,717 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 16:28:20,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:28:20,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_546320bb-bb80-4a83-9d53-5f10c212d0cb/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:28:20,718 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_546320bb-bb80-4a83-9d53-5f10c212d0cb/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:28:20,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_546320bb-bb80-4a83-9d53-5f10c212d0cb/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 16:28:20,784 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 16:28:20,784 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 16:28:20,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 16:28:20,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:28:20,906 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:28:20,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:28:21,197 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:28:21,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [708399414] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:28:21,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [69189839] [2022-11-16 16:28:21,199 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-16 16:28:21,199 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 16:28:21,199 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 16:28:21,200 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 16:28:21,200 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 16:28:21,319 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 16:28:21,898 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1127#(and (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 1)) (<= |ULTIMATE.start_main_~x~0#1| 2147483646) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_~c~0#1|))' at error location [2022-11-16 16:28:21,899 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 16:28:21,899 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 16:28:21,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-11-16 16:28:21,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190529672] [2022-11-16 16:28:21,899 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 16:28:21,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-16 16:28:21,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:28:21,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-16 16:28:21,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=318, Invalid=612, Unknown=0, NotChecked=0, Total=930 [2022-11-16 16:28:21,901 INFO L87 Difference]: Start difference. First operand 68 states and 69 transitions. Second operand has 24 states, 23 states have (on average 5.6521739130434785) internal successors, (130), 23 states have internal predecessors, (130), 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) [2022-11-16 16:28:22,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:28:22,044 INFO L93 Difference]: Finished difference Result 141 states and 153 transitions. [2022-11-16 16:28:22,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-16 16:28:22,046 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 5.6521739130434785) internal successors, (130), 23 states have internal predecessors, (130), 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 65 [2022-11-16 16:28:22,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:28:22,047 INFO L225 Difference]: With dead ends: 141 [2022-11-16 16:28:22,048 INFO L226 Difference]: Without dead ends: 140 [2022-11-16 16:28:22,048 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 165 SyntacticMatches, 10 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 577 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=318, Invalid=612, Unknown=0, NotChecked=0, Total=930 [2022-11-16 16:28:22,049 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 65 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 16:28:22,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 95 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 16:28:22,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-11-16 16:28:22,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2022-11-16 16:28:22,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 139 states have (on average 1.014388489208633) internal successors, (141), 139 states have internal predecessors, (141), 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) [2022-11-16 16:28:22,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 141 transitions. [2022-11-16 16:28:22,068 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 141 transitions. Word has length 65 [2022-11-16 16:28:22,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:28:22,069 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 141 transitions. [2022-11-16 16:28:22,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 5.6521739130434785) internal successors, (130), 23 states have internal predecessors, (130), 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) [2022-11-16 16:28:22,070 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 141 transitions. [2022-11-16 16:28:22,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-11-16 16:28:22,077 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:28:22,077 INFO L195 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 1, 1, 1, 1] [2022-11-16 16:28:22,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_546320bb-bb80-4a83-9d53-5f10c212d0cb/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 16:28:22,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_546320bb-bb80-4a83-9d53-5f10c212d0cb/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:28:22,283 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-16 16:28:22,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:28:22,284 INFO L85 PathProgramCache]: Analyzing trace with hash 298594002, now seen corresponding path program 4 times [2022-11-16 16:28:22,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:28:22,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283378520] [2022-11-16 16:28:22,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:28:22,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:28:22,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:28:23,025 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 0 proven. 1452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:28:23,025 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:28:23,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283378520] [2022-11-16 16:28:23,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283378520] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:28:23,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745534810] [2022-11-16 16:28:23,026 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-16 16:28:23,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:28:23,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_546320bb-bb80-4a83-9d53-5f10c212d0cb/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:28:23,028 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_546320bb-bb80-4a83-9d53-5f10c212d0cb/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:28:23,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_546320bb-bb80-4a83-9d53-5f10c212d0cb/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 16:28:23,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:28:23,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-16 16:28:23,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:28:23,364 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 0 proven. 1452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:28:23,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:28:24,410 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 0 proven. 1452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:28:24,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1745534810] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:28:24,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [5758682] [2022-11-16 16:28:24,413 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-16 16:28:24,413 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 16:28:24,413 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 16:28:24,413 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 16:28:24,413 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 16:28:24,575 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 16:28:25,874 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2325#(and (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 1)) (<= |ULTIMATE.start_main_~x~0#1| 2147483646) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_~c~0#1|))' at error location [2022-11-16 16:28:25,874 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 16:28:25,874 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 16:28:25,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 46 [2022-11-16 16:28:25,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979322879] [2022-11-16 16:28:25,875 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 16:28:25,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-16 16:28:25,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:28:25,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-16 16:28:25,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1194, Invalid=1776, Unknown=0, NotChecked=0, Total=2970 [2022-11-16 16:28:25,878 INFO L87 Difference]: Start difference. First operand 140 states and 141 transitions. Second operand has 48 states, 47 states have (on average 5.829787234042553) internal successors, (274), 47 states have internal predecessors, (274), 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) [2022-11-16 16:28:26,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:28:26,112 INFO L93 Difference]: Finished difference Result 285 states and 309 transitions. [2022-11-16 16:28:26,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-16 16:28:26,117 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 5.829787234042553) internal successors, (274), 47 states have internal predecessors, (274), 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 137 [2022-11-16 16:28:26,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:28:26,119 INFO L225 Difference]: With dead ends: 285 [2022-11-16 16:28:26,120 INFO L226 Difference]: Without dead ends: 284 [2022-11-16 16:28:26,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 357 SyntacticMatches, 22 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2041 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1194, Invalid=1776, Unknown=0, NotChecked=0, Total=2970 [2022-11-16 16:28:26,122 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 158 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 16:28:26,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 191 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 16:28:26,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2022-11-16 16:28:26,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 284. [2022-11-16 16:28:26,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 283 states have (on average 1.0070671378091873) internal successors, (285), 283 states have internal predecessors, (285), 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) [2022-11-16 16:28:26,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 285 transitions. [2022-11-16 16:28:26,142 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 285 transitions. Word has length 137 [2022-11-16 16:28:26,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:28:26,142 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 285 transitions. [2022-11-16 16:28:26,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 5.829787234042553) internal successors, (274), 47 states have internal predecessors, (274), 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) [2022-11-16 16:28:26,143 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 285 transitions. [2022-11-16 16:28:26,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2022-11-16 16:28:26,146 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:28:26,147 INFO L195 NwaCegarLoop]: trace histogram [47, 46, 46, 46, 46, 46, 1, 1, 1, 1] [2022-11-16 16:28:26,153 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_546320bb-bb80-4a83-9d53-5f10c212d0cb/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-16 16:28:26,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_546320bb-bb80-4a83-9d53-5f10c212d0cb/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-16 16:28:26,352 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-16 16:28:26,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:28:26,352 INFO L85 PathProgramCache]: Analyzing trace with hash 645020922, now seen corresponding path program 5 times [2022-11-16 16:28:26,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:28:26,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705170895] [2022-11-16 16:28:26,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:28:26,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:28:26,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:28:28,863 INFO L134 CoverageAnalysis]: Checked inductivity of 6348 backedges. 0 proven. 6348 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:28:28,864 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:28:28,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705170895] [2022-11-16 16:28:28,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705170895] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:28:28,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456980282] [2022-11-16 16:28:28,864 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 16:28:28,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:28:28,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_546320bb-bb80-4a83-9d53-5f10c212d0cb/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:28:28,865 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_546320bb-bb80-4a83-9d53-5f10c212d0cb/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:28:28,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_546320bb-bb80-4a83-9d53-5f10c212d0cb/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 16:28:29,032 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2022-11-16 16:28:29,033 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 16:28:29,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-16 16:28:29,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:28:29,524 INFO L134 CoverageAnalysis]: Checked inductivity of 6348 backedges. 0 proven. 6348 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:28:29,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:28:33,056 INFO L134 CoverageAnalysis]: Checked inductivity of 6348 backedges. 0 proven. 6348 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:28:33,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1456980282] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:28:33,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1381106985] [2022-11-16 16:28:33,059 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-16 16:28:33,060 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 16:28:33,061 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 16:28:33,061 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 16:28:33,061 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 16:28:33,165 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 16:28:36,404 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4771#(and (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 1)) (<= |ULTIMATE.start_main_~x~0#1| 2147483646) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_~c~0#1|))' at error location [2022-11-16 16:28:36,405 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 16:28:36,405 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 16:28:36,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 94 [2022-11-16 16:28:36,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430408066] [2022-11-16 16:28:36,405 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 16:28:36,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-11-16 16:28:36,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:28:36,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-11-16 16:28:36,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4674, Invalid=5832, Unknown=0, NotChecked=0, Total=10506 [2022-11-16 16:28:36,412 INFO L87 Difference]: Start difference. First operand 284 states and 285 transitions. Second operand has 96 states, 95 states have (on average 5.91578947368421) internal successors, (562), 95 states have internal predecessors, (562), 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) [2022-11-16 16:28:36,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:28:36,996 INFO L93 Difference]: Finished difference Result 573 states and 621 transitions. [2022-11-16 16:28:36,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-11-16 16:28:36,997 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 5.91578947368421) internal successors, (562), 95 states have internal predecessors, (562), 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 281 [2022-11-16 16:28:36,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:28:37,000 INFO L225 Difference]: With dead ends: 573 [2022-11-16 16:28:37,000 INFO L226 Difference]: Without dead ends: 572 [2022-11-16 16:28:37,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 888 GetRequests, 741 SyntacticMatches, 46 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7561 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=4674, Invalid=5832, Unknown=0, NotChecked=0, Total=10506 [2022-11-16 16:28:37,004 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 291 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 16:28:37,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [291 Valid, 383 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 16:28:37,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2022-11-16 16:28:37,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 572. [2022-11-16 16:28:37,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 571 states have (on average 1.0035026269702276) internal successors, (573), 571 states have internal predecessors, (573), 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) [2022-11-16 16:28:37,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 573 transitions. [2022-11-16 16:28:37,031 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 573 transitions. Word has length 281 [2022-11-16 16:28:37,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:28:37,032 INFO L495 AbstractCegarLoop]: Abstraction has 572 states and 573 transitions. [2022-11-16 16:28:37,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 5.91578947368421) internal successors, (562), 95 states have internal predecessors, (562), 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) [2022-11-16 16:28:37,032 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 573 transitions. [2022-11-16 16:28:37,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 570 [2022-11-16 16:28:37,041 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:28:37,041 INFO L195 NwaCegarLoop]: trace histogram [95, 94, 94, 94, 94, 94, 1, 1, 1, 1] [2022-11-16 16:28:37,047 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_546320bb-bb80-4a83-9d53-5f10c212d0cb/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 16:28:37,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_546320bb-bb80-4a83-9d53-5f10c212d0cb/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-16 16:28:37,247 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-16 16:28:37,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:28:37,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1672812214, now seen corresponding path program 6 times [2022-11-16 16:28:37,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:28:37,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725747160] [2022-11-16 16:28:37,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:28:37,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:28:37,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:28:45,368 INFO L134 CoverageAnalysis]: Checked inductivity of 26508 backedges. 0 proven. 26508 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:28:45,368 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:28:45,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725747160] [2022-11-16 16:28:45,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725747160] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:28:45,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27516912] [2022-11-16 16:28:45,368 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 16:28:45,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:28:45,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_546320bb-bb80-4a83-9d53-5f10c212d0cb/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:28:45,369 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_546320bb-bb80-4a83-9d53-5f10c212d0cb/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:28:45,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_546320bb-bb80-4a83-9d53-5f10c212d0cb/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 16:28:45,546 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 16:28:45,546 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 16:28:45,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 954 conjuncts, 96 conjunts are in the unsatisfiable core [2022-11-16 16:28:45,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:28:46,508 INFO L134 CoverageAnalysis]: Checked inductivity of 26508 backedges. 0 proven. 26508 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:28:46,509 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:28:57,981 INFO L134 CoverageAnalysis]: Checked inductivity of 26508 backedges. 0 proven. 26508 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:28:57,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27516912] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:28:57,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [167824178] [2022-11-16 16:28:57,984 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-16 16:28:57,984 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 16:28:57,984 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 16:28:57,984 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 16:28:57,985 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 16:28:58,066 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 16:29:08,322 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9713#(and (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 1)) (<= |ULTIMATE.start_main_~x~0#1| 2147483646) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_~c~0#1|))' at error location [2022-11-16 16:29:08,322 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 16:29:08,322 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 16:29:08,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95, 95] total 190 [2022-11-16 16:29:08,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864742257] [2022-11-16 16:29:08,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 16:29:08,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2022-11-16 16:29:08,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:29:08,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2022-11-16 16:29:08,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18546, Invalid=20856, Unknown=0, NotChecked=0, Total=39402 [2022-11-16 16:29:08,338 INFO L87 Difference]: Start difference. First operand 572 states and 573 transitions. Second operand has 192 states, 191 states have (on average 5.958115183246074) internal successors, (1138), 191 states have internal predecessors, (1138), 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) [2022-11-16 16:29:09,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:29:09,958 INFO L93 Difference]: Finished difference Result 1149 states and 1245 transitions. [2022-11-16 16:29:09,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2022-11-16 16:29:09,959 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 191 states have (on average 5.958115183246074) internal successors, (1138), 191 states have internal predecessors, (1138), 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 569 [2022-11-16 16:29:09,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:29:09,963 INFO L225 Difference]: With dead ends: 1149 [2022-11-16 16:29:09,964 INFO L226 Difference]: Without dead ends: 1148 [2022-11-16 16:29:09,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1800 GetRequests, 1509 SyntacticMatches, 94 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28969 ImplicationChecksByTransitivity, 24.6s TimeCoverageRelationStatistics Valid=18546, Invalid=20856, Unknown=0, NotChecked=0, Total=39402 [2022-11-16 16:29:09,968 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 497 mSDsluCounter, 760 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 497 SdHoareTripleChecker+Valid, 767 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 16:29:09,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [497 Valid, 767 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 16:29:09,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1148 states. [2022-11-16 16:29:09,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1148 to 1148. [2022-11-16 16:29:10,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1148 states, 1147 states have (on average 1.001743679163034) internal successors, (1149), 1147 states have internal predecessors, (1149), 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) [2022-11-16 16:29:10,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1148 states to 1148 states and 1149 transitions. [2022-11-16 16:29:10,007 INFO L78 Accepts]: Start accepts. Automaton has 1148 states and 1149 transitions. Word has length 569 [2022-11-16 16:29:10,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:29:10,009 INFO L495 AbstractCegarLoop]: Abstraction has 1148 states and 1149 transitions. [2022-11-16 16:29:10,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 191 states have (on average 5.958115183246074) internal successors, (1138), 191 states have internal predecessors, (1138), 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) [2022-11-16 16:29:10,010 INFO L276 IsEmpty]: Start isEmpty. Operand 1148 states and 1149 transitions. [2022-11-16 16:29:10,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1146 [2022-11-16 16:29:10,081 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:29:10,081 INFO L195 NwaCegarLoop]: trace histogram [191, 190, 190, 190, 190, 190, 1, 1, 1, 1] [2022-11-16 16:29:10,104 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_546320bb-bb80-4a83-9d53-5f10c212d0cb/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 16:29:10,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_546320bb-bb80-4a83-9d53-5f10c212d0cb/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:29:10,288 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-16 16:29:10,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:29:10,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1403945450, now seen corresponding path program 7 times [2022-11-16 16:29:10,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:29:10,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497539047] [2022-11-16 16:29:10,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:29:10,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:29:10,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:29:41,001 INFO L134 CoverageAnalysis]: Checked inductivity of 108300 backedges. 0 proven. 108300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:29:41,002 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:29:41,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497539047] [2022-11-16 16:29:41,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497539047] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:29:41,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052859392] [2022-11-16 16:29:41,002 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-16 16:29:41,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:29:41,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_546320bb-bb80-4a83-9d53-5f10c212d0cb/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:29:41,007 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_546320bb-bb80-4a83-9d53-5f10c212d0cb/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:29:41,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_546320bb-bb80-4a83-9d53-5f10c212d0cb/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 16:29:41,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:29:41,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 1914 conjuncts, 192 conjunts are in the unsatisfiable core [2022-11-16 16:29:41,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:29:43,073 INFO L134 CoverageAnalysis]: Checked inductivity of 108300 backedges. 0 proven. 108300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:29:43,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:30:27,794 INFO L134 CoverageAnalysis]: Checked inductivity of 108300 backedges. 0 proven. 108300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:30:27,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2052859392] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:30:27,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1892301759] [2022-11-16 16:30:27,797 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-16 16:30:27,797 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 16:30:27,797 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 16:30:27,797 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 16:30:27,798 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 16:30:27,888 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 16:31:05,332 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '19647#(and (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 1)) (<= |ULTIMATE.start_main_~x~0#1| 2147483646) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_~c~0#1|))' at error location [2022-11-16 16:31:05,332 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 16:31:05,332 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 16:31:05,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [191, 191, 191] total 382 [2022-11-16 16:31:05,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207585920] [2022-11-16 16:31:05,334 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 16:31:05,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 384 states [2022-11-16 16:31:05,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:31:05,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 384 interpolants. [2022-11-16 16:31:05,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73938, Invalid=78552, Unknown=0, NotChecked=0, Total=152490 [2022-11-16 16:31:05,363 INFO L87 Difference]: Start difference. First operand 1148 states and 1149 transitions. Second operand has 384 states, 383 states have (on average 5.97911227154047) internal successors, (2290), 383 states have internal predecessors, (2290), 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) [2022-11-16 16:31:16,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:31:16,323 INFO L93 Difference]: Finished difference Result 2301 states and 2493 transitions. [2022-11-16 16:31:16,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2022-11-16 16:31:16,325 INFO L78 Accepts]: Start accepts. Automaton has has 384 states, 383 states have (on average 5.97911227154047) internal successors, (2290), 383 states have internal predecessors, (2290), 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 1145 [2022-11-16 16:31:16,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:31:16,334 INFO L225 Difference]: With dead ends: 2301 [2022-11-16 16:31:16,334 INFO L226 Difference]: Without dead ends: 2300 [2022-11-16 16:31:16,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3624 GetRequests, 3045 SyntacticMatches, 190 SemanticMatches, 389 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113257 ImplicationChecksByTransitivity, 94.8s TimeCoverageRelationStatistics Valid=73938, Invalid=78552, Unknown=0, NotChecked=0, Total=152490 [2022-11-16 16:31:16,344 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 1164 mSDsluCounter, 1528 mSDsCounter, 0 mSdLazyCounter, 769 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1164 SdHoareTripleChecker+Valid, 1535 SdHoareTripleChecker+Invalid, 967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-16 16:31:16,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1164 Valid, 1535 Invalid, 967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 769 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-16 16:31:16,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2300 states. [2022-11-16 16:31:16,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2300 to 2300. [2022-11-16 16:31:16,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2300 states, 2299 states have (on average 1.0008699434536754) internal successors, (2301), 2299 states have internal predecessors, (2301), 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) [2022-11-16 16:31:16,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2300 states to 2300 states and 2301 transitions. [2022-11-16 16:31:16,416 INFO L78 Accepts]: Start accepts. Automaton has 2300 states and 2301 transitions. Word has length 1145 [2022-11-16 16:31:16,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:31:16,419 INFO L495 AbstractCegarLoop]: Abstraction has 2300 states and 2301 transitions. [2022-11-16 16:31:16,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 384 states, 383 states have (on average 5.97911227154047) internal successors, (2290), 383 states have internal predecessors, (2290), 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) [2022-11-16 16:31:16,421 INFO L276 IsEmpty]: Start isEmpty. Operand 2300 states and 2301 transitions. [2022-11-16 16:31:16,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2298 [2022-11-16 16:31:16,479 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:31:16,480 INFO L195 NwaCegarLoop]: trace histogram [383, 382, 382, 382, 382, 382, 1, 1, 1, 1] [2022-11-16 16:31:16,485 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_546320bb-bb80-4a83-9d53-5f10c212d0cb/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-16 16:31:16,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_546320bb-bb80-4a83-9d53-5f10c212d0cb/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:31:16,680 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-16 16:31:16,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:31:16,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1119964374, now seen corresponding path program 8 times [2022-11-16 16:31:16,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:31:16,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552034261] [2022-11-16 16:31:16,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:31:16,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:31:18,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:34:12,473 INFO L134 CoverageAnalysis]: Checked inductivity of 437772 backedges. 0 proven. 437772 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:34:12,473 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:34:12,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552034261] [2022-11-16 16:34:12,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552034261] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:34:12,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168397131] [2022-11-16 16:34:12,473 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 16:34:12,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:34:12,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_546320bb-bb80-4a83-9d53-5f10c212d0cb/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:34:12,475 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_546320bb-bb80-4a83-9d53-5f10c212d0cb/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:34:12,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_546320bb-bb80-4a83-9d53-5f10c212d0cb/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 16:34:18,224 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 383 check-sat command(s) [2022-11-16 16:34:18,224 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 16:34:18,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 3834 conjuncts, 384 conjunts are in the unsatisfiable core [2022-11-16 16:34:18,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:34:22,576 INFO L134 CoverageAnalysis]: Checked inductivity of 437772 backedges. 0 proven. 437772 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:34:22,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:37:31,643 INFO L134 CoverageAnalysis]: Checked inductivity of 437772 backedges. 0 proven. 437772 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:37:31,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1168397131] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:37:31,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1609154875] [2022-11-16 16:37:31,646 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-16 16:37:31,646 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 16:37:31,647 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 16:37:31,647 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 16:37:31,647 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 16:37:31,734 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 16:39:58,181 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '39565#(and (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 1)) (<= |ULTIMATE.start_main_~x~0#1| 2147483646) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_~c~0#1|))' at error location [2022-11-16 16:39:58,181 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 16:39:58,181 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 16:39:58,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [383, 383, 383] total 766 [2022-11-16 16:39:58,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051031651] [2022-11-16 16:39:58,183 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 16:39:58,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 768 states [2022-11-16 16:39:58,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:39:58,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 768 interpolants. [2022-11-16 16:39:58,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=295314, Invalid=304536, Unknown=0, NotChecked=0, Total=599850 [2022-11-16 16:39:58,265 INFO L87 Difference]: Start difference. First operand 2300 states and 2301 transitions. Second operand has 768 states, 767 states have (on average 5.989569752281617) internal successors, (4594), 767 states have internal predecessors, (4594), 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) [2022-11-16 16:41:06,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:41:06,850 INFO L93 Difference]: Finished difference Result 4605 states and 4989 transitions. [2022-11-16 16:41:06,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 768 states. [2022-11-16 16:41:06,853 INFO L78 Accepts]: Start accepts. Automaton has has 768 states, 767 states have (on average 5.989569752281617) internal successors, (4594), 767 states have internal predecessors, (4594), 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 2297 [2022-11-16 16:41:06,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:41:06,868 INFO L225 Difference]: With dead ends: 4605 [2022-11-16 16:41:06,868 INFO L226 Difference]: Without dead ends: 4604 [2022-11-16 16:41:06,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7272 GetRequests, 6117 SyntacticMatches, 382 SemanticMatches, 773 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447721 ImplicationChecksByTransitivity, 390.5s TimeCoverageRelationStatistics Valid=295314, Invalid=304536, Unknown=0, NotChecked=0, Total=599850 [2022-11-16 16:41:06,910 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 2309 mSDsluCounter, 3064 mSDsCounter, 0 mSdLazyCounter, 1540 mSolverCounterSat, 388 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2309 SdHoareTripleChecker+Valid, 3071 SdHoareTripleChecker+Invalid, 1928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 388 IncrementalHoareTripleChecker+Valid, 1540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-16 16:41:06,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2309 Valid, 3071 Invalid, 1928 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [388 Valid, 1540 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-16 16:41:06,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4604 states. [2022-11-16 16:41:07,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4604 to 4604. [2022-11-16 16:41:07,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4604 states, 4603 states have (on average 1.0004344992396264) internal successors, (4605), 4603 states have internal predecessors, (4605), 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) [2022-11-16 16:41:07,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4604 states to 4604 states and 4605 transitions. [2022-11-16 16:41:07,018 INFO L78 Accepts]: Start accepts. Automaton has 4604 states and 4605 transitions. Word has length 2297 [2022-11-16 16:41:07,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:41:07,020 INFO L495 AbstractCegarLoop]: Abstraction has 4604 states and 4605 transitions. [2022-11-16 16:41:07,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 768 states, 767 states have (on average 5.989569752281617) internal successors, (4594), 767 states have internal predecessors, (4594), 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) [2022-11-16 16:41:07,022 INFO L276 IsEmpty]: Start isEmpty. Operand 4604 states and 4605 transitions. [2022-11-16 16:41:07,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4602 [2022-11-16 16:41:07,144 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:41:07,145 INFO L195 NwaCegarLoop]: trace histogram [767, 766, 766, 766, 766, 766, 1, 1, 1, 1] [2022-11-16 16:41:07,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_546320bb-bb80-4a83-9d53-5f10c212d0cb/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-16 16:41:07,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_546320bb-bb80-4a83-9d53-5f10c212d0cb/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-16 16:41:07,347 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-16 16:41:07,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:41:07,347 INFO L85 PathProgramCache]: Analyzing trace with hash -612166230, now seen corresponding path program 9 times [2022-11-16 16:41:07,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:41:07,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409435474] [2022-11-16 16:41:07,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:41:07,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:41:11,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat