./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-random1d-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baec7b47-2e48-465e-b748-afd9e117544c/bin/utaipan-G1rejxKTta/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baec7b47-2e48-465e-b748-afd9e117544c/bin/utaipan-G1rejxKTta/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baec7b47-2e48-465e-b748-afd9e117544c/bin/utaipan-G1rejxKTta/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baec7b47-2e48-465e-b748-afd9e117544c/bin/utaipan-G1rejxKTta/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-random1d-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baec7b47-2e48-465e-b748-afd9e117544c/bin/utaipan-G1rejxKTta/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baec7b47-2e48-465e-b748-afd9e117544c/bin/utaipan-G1rejxKTta --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 f79e4118373e847e0fb27fcdde0c282d507ddb96f3173b4556e1de9cae44280f --- 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-dbf71c6-m [2022-10-17 17:12:58,769 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 17:12:58,771 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 17:12:58,804 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 17:12:58,805 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 17:12:58,806 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 17:12:58,808 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 17:12:58,810 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 17:12:58,812 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 17:12:58,814 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 17:12:58,815 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 17:12:58,817 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 17:12:58,817 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 17:12:58,819 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 17:12:58,820 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 17:12:58,822 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 17:12:58,823 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 17:12:58,825 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 17:12:58,827 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 17:12:58,830 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 17:12:58,832 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 17:12:58,834 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 17:12:58,836 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 17:12:58,837 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 17:12:58,843 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 17:12:58,843 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 17:12:58,844 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 17:12:58,845 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 17:12:58,845 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 17:12:58,847 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 17:12:58,847 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 17:12:58,848 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 17:12:58,849 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 17:12:58,850 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 17:12:58,852 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 17:12:58,852 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 17:12:58,853 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 17:12:58,854 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 17:12:58,854 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 17:12:58,855 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 17:12:58,856 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 17:12:58,858 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baec7b47-2e48-465e-b748-afd9e117544c/bin/utaipan-G1rejxKTta/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-10-17 17:12:58,884 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 17:12:58,885 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 17:12:58,885 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 17:12:58,886 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 17:12:58,887 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 17:12:58,887 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 17:12:58,888 INFO L138 SettingsManager]: * User list type=DISABLED [2022-10-17 17:12:58,888 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-10-17 17:12:58,888 INFO L138 SettingsManager]: * Explicit value domain=true [2022-10-17 17:12:58,889 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-10-17 17:12:58,889 INFO L138 SettingsManager]: * Octagon Domain=false [2022-10-17 17:12:58,889 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-10-17 17:12:58,890 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-10-17 17:12:58,911 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-10-17 17:12:58,911 INFO L138 SettingsManager]: * Interval Domain=false [2022-10-17 17:12:58,912 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-10-17 17:12:58,912 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-10-17 17:12:58,912 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-10-17 17:12:58,913 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 17:12:58,913 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-17 17:12:58,913 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 17:12:58,914 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 17:12:58,914 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 17:12:58,916 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 17:12:58,916 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 17:12:58,916 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-17 17:12:58,917 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 17:12:58,917 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 17:12:58,918 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 17:12:58,918 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 17:12:58,918 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 17:12:58,919 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:12:58,919 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 17:12:58,919 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-10-17 17:12:58,920 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 17:12:58,920 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 17:12:58,922 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-10-17 17:12:58,922 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 17:12:58,922 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 17:12:58,923 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-10-17 17:12:58,923 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_baec7b47-2e48-465e-b748-afd9e117544c/bin/utaipan-G1rejxKTta/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baec7b47-2e48-465e-b748-afd9e117544c/bin/utaipan-G1rejxKTta Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f79e4118373e847e0fb27fcdde0c282d507ddb96f3173b4556e1de9cae44280f [2022-10-17 17:12:59,252 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 17:12:59,282 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 17:12:59,285 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 17:12:59,287 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 17:12:59,288 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 17:12:59,289 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baec7b47-2e48-465e-b748-afd9e117544c/bin/utaipan-G1rejxKTta/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-random1d-1.c [2022-10-17 17:12:59,366 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baec7b47-2e48-465e-b748-afd9e117544c/bin/utaipan-G1rejxKTta/data/7ec1fb81d/b7a803d9d47a4d13b1f9d83d01321e11/FLAGbf5da343c [2022-10-17 17:12:59,888 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 17:12:59,889 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baec7b47-2e48-465e-b748-afd9e117544c/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-random1d-1.c [2022-10-17 17:12:59,898 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baec7b47-2e48-465e-b748-afd9e117544c/bin/utaipan-G1rejxKTta/data/7ec1fb81d/b7a803d9d47a4d13b1f9d83d01321e11/FLAGbf5da343c [2022-10-17 17:13:00,264 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baec7b47-2e48-465e-b748-afd9e117544c/bin/utaipan-G1rejxKTta/data/7ec1fb81d/b7a803d9d47a4d13b1f9d83d01321e11 [2022-10-17 17:13:00,267 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 17:13:00,268 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 17:13:00,270 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 17:13:00,270 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 17:13:00,274 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 17:13:00,275 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:13:00" (1/1) ... [2022-10-17 17:13:00,276 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e488b36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:13:00, skipping insertion in model container [2022-10-17 17:13:00,276 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:13:00" (1/1) ... [2022-10-17 17:13:00,299 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 17:13:00,314 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:13:00,497 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:13:00,501 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 17:13:00,512 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:13:00,525 INFO L208 MainTranslator]: Completed translation [2022-10-17 17:13:00,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:13:00 WrapperNode [2022-10-17 17:13:00,525 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 17:13:00,527 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 17:13:00,527 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 17:13:00,527 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 17:13:00,535 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:13:00" (1/1) ... [2022-10-17 17:13:00,540 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:13:00" (1/1) ... [2022-10-17 17:13:00,558 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 30 [2022-10-17 17:13:00,559 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 17:13:00,560 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 17:13:00,560 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 17:13:00,560 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 17:13:00,570 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:13:00" (1/1) ... [2022-10-17 17:13:00,570 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:13:00" (1/1) ... [2022-10-17 17:13:00,571 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:13:00" (1/1) ... [2022-10-17 17:13:00,571 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:13:00" (1/1) ... [2022-10-17 17:13:00,573 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:13:00" (1/1) ... [2022-10-17 17:13:00,577 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:13:00" (1/1) ... [2022-10-17 17:13:00,578 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:13:00" (1/1) ... [2022-10-17 17:13:00,579 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:13:00" (1/1) ... [2022-10-17 17:13:00,581 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 17:13:00,582 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 17:13:00,582 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 17:13:00,582 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 17:13:00,584 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:13:00" (1/1) ... [2022-10-17 17:13:00,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:13:00,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baec7b47-2e48-465e-b748-afd9e117544c/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:13:00,624 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baec7b47-2e48-465e-b748-afd9e117544c/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 17:13:00,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baec7b47-2e48-465e-b748-afd9e117544c/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 17:13:00,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 17:13:00,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 17:13:00,749 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 17:13:00,751 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 17:13:00,857 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 17:13:00,876 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 17:13:00,876 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-17 17:13:00,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:13:00 BoogieIcfgContainer [2022-10-17 17:13:00,879 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 17:13:00,882 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 17:13:00,882 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 17:13:00,886 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 17:13:00,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 05:13:00" (1/3) ... [2022-10-17 17:13:00,888 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38ad491c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:13:00, skipping insertion in model container [2022-10-17 17:13:00,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:13:00" (2/3) ... [2022-10-17 17:13:00,888 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38ad491c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:13:00, skipping insertion in model container [2022-10-17 17:13:00,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:13:00" (3/3) ... [2022-10-17 17:13:00,890 INFO L112 eAbstractionObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-random1d-1.c [2022-10-17 17:13:00,911 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 17:13:00,911 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-10-17 17:13:00,974 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 17:13:00,982 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;@7b0b70bf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 17:13:00,982 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-10-17 17:13:00,987 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:13:00,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-10-17 17:13:00,994 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:13:00,995 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-10-17 17:13:00,996 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-17 17:13:01,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:13:01,002 INFO L85 PathProgramCache]: Analyzing trace with hash 69427029, now seen corresponding path program 1 times [2022-10-17 17:13:01,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:13:01,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708438057] [2022-10-17 17:13:01,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:13:01,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:13:01,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:13:01,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:13:01,169 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:13:01,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708438057] [2022-10-17 17:13:01,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708438057] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:13:01,170 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:13:01,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 17:13:01,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143741845] [2022-10-17 17:13:01,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:13:01,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:13:01,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:13:01,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:13:01,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:13:01,232 INFO L87 Difference]: Start difference. First operand has 18 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:13:01,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:13:01,333 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2022-10-17 17:13:01,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:13:01,336 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-10-17 17:13:01,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:13:01,345 INFO L225 Difference]: With dead ends: 32 [2022-10-17 17:13:01,345 INFO L226 Difference]: Without dead ends: 26 [2022-10-17 17:13:01,348 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 [2022-10-17 17:13:01,353 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 11 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:13:01,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 23 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:13:01,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-10-17 17:13:01,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2022-10-17 17:13:01,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 22 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:13:01,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2022-10-17 17:13:01,389 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 5 [2022-10-17 17:13:01,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:13:01,390 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 28 transitions. [2022-10-17 17:13:01,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:13:01,391 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2022-10-17 17:13:01,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-17 17:13:01,391 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:13:01,391 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-17 17:13:01,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 17:13:01,392 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-17 17:13:01,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:13:01,393 INFO L85 PathProgramCache]: Analyzing trace with hash -2142729346, now seen corresponding path program 1 times [2022-10-17 17:13:01,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:13:01,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129189325] [2022-10-17 17:13:01,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:13:01,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:13:01,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:13:01,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:13:01,435 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:13:01,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129189325] [2022-10-17 17:13:01,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129189325] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:13:01,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:13:01,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 17:13:01,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620322982] [2022-10-17 17:13:01,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:13:01,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:13:01,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:13:01,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:13:01,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:13:01,440 INFO L87 Difference]: Start difference. First operand 23 states and 28 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) [2022-10-17 17:13:01,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:13:01,490 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2022-10-17 17:13:01,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:13:01,491 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 [2022-10-17 17:13:01,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:13:01,494 INFO L225 Difference]: With dead ends: 40 [2022-10-17 17:13:01,494 INFO L226 Difference]: Without dead ends: 38 [2022-10-17 17:13:01,494 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 [2022-10-17 17:13:01,522 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 8 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 17:13:01,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 17 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 17:13:01,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-10-17 17:13:01,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2022-10-17 17:13:01,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 30 states have (on average 1.5666666666666667) internal successors, (47), 35 states have internal predecessors, (47), 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) [2022-10-17 17:13:01,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 47 transitions. [2022-10-17 17:13:01,535 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 47 transitions. Word has length 6 [2022-10-17 17:13:01,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:13:01,536 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 47 transitions. [2022-10-17 17:13:01,536 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) [2022-10-17 17:13:01,536 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 47 transitions. [2022-10-17 17:13:01,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-10-17 17:13:01,537 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:13:01,537 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:13:01,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 17:13:01,538 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-17 17:13:01,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:13:01,539 INFO L85 PathProgramCache]: Analyzing trace with hash -2000100226, now seen corresponding path program 1 times [2022-10-17 17:13:01,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:13:01,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130046300] [2022-10-17 17:13:01,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:13:01,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:13:01,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:13:01,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:13:01,639 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:13:01,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130046300] [2022-10-17 17:13:01,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130046300] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:13:01,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:13:01,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 17:13:01,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723528562] [2022-10-17 17:13:01,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:13:01,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:13:01,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:13:01,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:13:01,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:13:01,643 INFO L87 Difference]: Start difference. First operand 36 states and 47 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:13:01,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:13:01,680 INFO L93 Difference]: Finished difference Result 42 states and 56 transitions. [2022-10-17 17:13:01,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:13:01,681 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-10-17 17:13:01,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:13:01,683 INFO L225 Difference]: With dead ends: 42 [2022-10-17 17:13:01,687 INFO L226 Difference]: Without dead ends: 41 [2022-10-17 17:13:01,688 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 [2022-10-17 17:13:01,690 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 5 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 17:13:01,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 22 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 17:13:01,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-10-17 17:13:01,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2022-10-17 17:13:01,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 33 states have (on average 1.5151515151515151) internal successors, (50), 38 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:13:01,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 50 transitions. [2022-10-17 17:13:01,706 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 50 transitions. Word has length 7 [2022-10-17 17:13:01,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:13:01,707 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 50 transitions. [2022-10-17 17:13:01,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:13:01,707 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 50 transitions. [2022-10-17 17:13:01,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-10-17 17:13:01,709 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:13:01,709 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:13:01,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 17:13:01,710 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-17 17:13:01,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:13:01,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1873564800, now seen corresponding path program 1 times [2022-10-17 17:13:01,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:13:01,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185489751] [2022-10-17 17:13:01,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:13:01,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:13:01,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:13:01,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:13:01,802 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:13:01,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185489751] [2022-10-17 17:13:01,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185489751] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:13:01,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:13:01,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 17:13:01,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956376007] [2022-10-17 17:13:01,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:13:01,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:13:01,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:13:01,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:13:01,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:13:01,809 INFO L87 Difference]: Start difference. First operand 39 states and 50 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:13:01,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:13:01,840 INFO L93 Difference]: Finished difference Result 39 states and 50 transitions. [2022-10-17 17:13:01,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:13:01,841 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-10-17 17:13:01,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:13:01,842 INFO L225 Difference]: With dead ends: 39 [2022-10-17 17:13:01,844 INFO L226 Difference]: Without dead ends: 38 [2022-10-17 17:13:01,844 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 [2022-10-17 17:13:01,846 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 8 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 17:13:01,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 11 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 17:13:01,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-10-17 17:13:01,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2022-10-17 17:13:01,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 33 states have (on average 1.4242424242424243) internal successors, (47), 37 states have internal predecessors, (47), 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) [2022-10-17 17:13:01,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 47 transitions. [2022-10-17 17:13:01,867 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 47 transitions. Word has length 8 [2022-10-17 17:13:01,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:13:01,868 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 47 transitions. [2022-10-17 17:13:01,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:13:01,869 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 47 transitions. [2022-10-17 17:13:01,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-10-17 17:13:01,870 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:13:01,870 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:13:01,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 17:13:01,872 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-17 17:13:01,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:13:01,873 INFO L85 PathProgramCache]: Analyzing trace with hash 2026065806, now seen corresponding path program 1 times [2022-10-17 17:13:01,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:13:01,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808105758] [2022-10-17 17:13:01,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:13:01,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:13:01,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:13:01,953 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:13:01,953 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:13:01,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808105758] [2022-10-17 17:13:01,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808105758] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:13:01,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663306835] [2022-10-17 17:13:01,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:13:01,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:13:01,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baec7b47-2e48-465e-b748-afd9e117544c/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:13:01,957 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baec7b47-2e48-465e-b748-afd9e117544c/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:13:01,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baec7b47-2e48-465e-b748-afd9e117544c/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 17:13:01,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:13:01,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 17:13:02,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:13:02,051 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:13:02,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:13:02,088 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:13:02,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [663306835] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:13:02,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1920416471] [2022-10-17 17:13:02,115 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-10-17 17:13:02,116 INFO L166 IcfgInterpreter]: Building call graph [2022-10-17 17:13:02,120 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-10-17 17:13:02,126 INFO L176 IcfgInterpreter]: Starting interpretation [2022-10-17 17:13:02,127 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-10-17 17:13:02,573 INFO L180 IcfgInterpreter]: Interpretation finished [2022-10-17 17:13:02,930 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '418#(and (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_~a~0#1|) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|))' at error location [2022-10-17 17:13:02,930 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-10-17 17:13:02,930 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 17:13:02,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-10-17 17:13:02,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769382920] [2022-10-17 17:13:02,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 17:13:02,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 17:13:02,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:13:02,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 17:13:02,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-10-17 17:13:02,933 INFO L87 Difference]: Start difference. First operand 38 states and 47 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 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) [2022-10-17 17:13:03,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:13:03,017 INFO L93 Difference]: Finished difference Result 97 states and 134 transitions. [2022-10-17 17:13:03,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 17:13:03,019 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 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) Word has length 11 [2022-10-17 17:13:03,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:13:03,025 INFO L225 Difference]: With dead ends: 97 [2022-10-17 17:13:03,026 INFO L226 Difference]: Without dead ends: 95 [2022-10-17 17:13:03,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-10-17 17:13:03,028 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 36 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:13:03,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 37 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:13:03,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-10-17 17:13:03,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 78. [2022-10-17 17:13:03,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 73 states have (on average 1.3972602739726028) internal successors, (102), 77 states have internal predecessors, (102), 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) [2022-10-17 17:13:03,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 102 transitions. [2022-10-17 17:13:03,057 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 102 transitions. Word has length 11 [2022-10-17 17:13:03,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:13:03,057 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 102 transitions. [2022-10-17 17:13:03,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 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) [2022-10-17 17:13:03,058 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 102 transitions. [2022-10-17 17:13:03,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-10-17 17:13:03,059 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:13:03,059 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:13:03,102 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baec7b47-2e48-465e-b748-afd9e117544c/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-17 17:13:03,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baec7b47-2e48-465e-b748-afd9e117544c/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:13:03,274 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-17 17:13:03,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:13:03,275 INFO L85 PathProgramCache]: Analyzing trace with hash -974279381, now seen corresponding path program 1 times [2022-10-17 17:13:03,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:13:03,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770598178] [2022-10-17 17:13:03,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:13:03,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:13:03,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:13:03,345 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:13:03,345 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:13:03,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770598178] [2022-10-17 17:13:03,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770598178] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:13:03,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856593201] [2022-10-17 17:13:03,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:13:03,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:13:03,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baec7b47-2e48-465e-b748-afd9e117544c/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:13:03,347 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baec7b47-2e48-465e-b748-afd9e117544c/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:13:03,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baec7b47-2e48-465e-b748-afd9e117544c/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-17 17:13:03,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:13:03,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 17:13:03,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:13:03,412 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:13:03,412 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:13:03,459 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:13:03,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856593201] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:13:03,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1692008038] [2022-10-17 17:13:03,462 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-10-17 17:13:03,462 INFO L166 IcfgInterpreter]: Building call graph [2022-10-17 17:13:03,462 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-10-17 17:13:03,463 INFO L176 IcfgInterpreter]: Starting interpretation [2022-10-17 17:13:03,463 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-10-17 17:13:03,662 INFO L180 IcfgInterpreter]: Interpretation finished [2022-10-17 17:13:03,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1692008038] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:13:03,976 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-10-17 17:13:03,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [3, 3, 3] total 12 [2022-10-17 17:13:03,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053869410] [2022-10-17 17:13:03,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:13:03,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-17 17:13:03,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:13:03,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-17 17:13:03,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-10-17 17:13:03,979 INFO L87 Difference]: Start difference. First operand 78 states and 102 transitions. Second operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:13:04,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:13:04,415 INFO L93 Difference]: Finished difference Result 103 states and 129 transitions. [2022-10-17 17:13:04,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-17 17:13:04,415 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-10-17 17:13:04,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:13:04,417 INFO L225 Difference]: With dead ends: 103 [2022-10-17 17:13:04,417 INFO L226 Difference]: Without dead ends: 102 [2022-10-17 17:13:04,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=96, Invalid=176, Unknown=0, NotChecked=0, Total=272 [2022-10-17 17:13:04,419 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 42 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 17:13:04,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 12 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 17:13:04,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-10-17 17:13:04,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 90. [2022-10-17 17:13:04,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 85 states have (on average 1.4) internal successors, (119), 89 states have internal predecessors, (119), 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) [2022-10-17 17:13:04,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 119 transitions. [2022-10-17 17:13:04,433 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 119 transitions. Word has length 12 [2022-10-17 17:13:04,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:13:04,433 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 119 transitions. [2022-10-17 17:13:04,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:13:04,434 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 119 transitions. [2022-10-17 17:13:04,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-10-17 17:13:04,435 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:13:04,435 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-10-17 17:13:04,477 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baec7b47-2e48-465e-b748-afd9e117544c/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-17 17:13:04,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baec7b47-2e48-465e-b748-afd9e117544c/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:13:04,659 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-17 17:13:04,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:13:04,659 INFO L85 PathProgramCache]: Analyzing trace with hash -974273423, now seen corresponding path program 1 times [2022-10-17 17:13:04,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:13:04,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999384983] [2022-10-17 17:13:04,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:13:04,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:13:04,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:13:04,740 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:13:04,741 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:13:04,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999384983] [2022-10-17 17:13:04,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999384983] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:13:04,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116515281] [2022-10-17 17:13:04,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:13:04,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:13:04,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baec7b47-2e48-465e-b748-afd9e117544c/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:13:04,747 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baec7b47-2e48-465e-b748-afd9e117544c/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:13:04,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baec7b47-2e48-465e-b748-afd9e117544c/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-17 17:13:04,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:13:04,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 17:13:04,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:13:04,824 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:13:04,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:13:04,855 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:13:04,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116515281] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:13:04,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [263814593] [2022-10-17 17:13:04,858 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-10-17 17:13:04,859 INFO L166 IcfgInterpreter]: Building call graph [2022-10-17 17:13:04,859 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-10-17 17:13:04,859 INFO L176 IcfgInterpreter]: Starting interpretation [2022-10-17 17:13:04,859 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-10-17 17:13:04,984 INFO L180 IcfgInterpreter]: Interpretation finished [2022-10-17 17:13:05,202 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '998#(and (< (+ 2147483647 |ULTIMATE.start_main_~a~0#1|) 0) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|))' at error location [2022-10-17 17:13:05,203 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-10-17 17:13:05,203 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 17:13:05,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-10-17 17:13:05,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391917077] [2022-10-17 17:13:05,203 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 17:13:05,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 17:13:05,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:13:05,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 17:13:05,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2022-10-17 17:13:05,205 INFO L87 Difference]: Start difference. First operand 90 states and 119 transitions. Second operand has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:13:05,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:13:05,287 INFO L93 Difference]: Finished difference Result 242 states and 342 transitions. [2022-10-17 17:13:05,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 17:13:05,288 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-10-17 17:13:05,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:13:05,291 INFO L225 Difference]: With dead ends: 242 [2022-10-17 17:13:05,291 INFO L226 Difference]: Without dead ends: 240 [2022-10-17 17:13:05,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2022-10-17 17:13:05,293 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 20 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:13:05,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 33 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:13:05,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2022-10-17 17:13:05,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 196. [2022-10-17 17:13:05,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 191 states have (on average 1.3717277486910995) internal successors, (262), 195 states have internal predecessors, (262), 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) [2022-10-17 17:13:05,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 262 transitions. [2022-10-17 17:13:05,339 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 262 transitions. Word has length 12 [2022-10-17 17:13:05,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:13:05,339 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 262 transitions. [2022-10-17 17:13:05,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:13:05,340 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 262 transitions. [2022-10-17 17:13:05,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-10-17 17:13:05,341 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:13:05,341 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-10-17 17:13:05,376 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baec7b47-2e48-465e-b748-afd9e117544c/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-17 17:13:05,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baec7b47-2e48-465e-b748-afd9e117544c/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:13:05,563 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-17 17:13:05,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:13:05,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1429056119, now seen corresponding path program 1 times [2022-10-17 17:13:05,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:13:05,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497912923] [2022-10-17 17:13:05,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:13:05,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:13:05,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:13:05,614 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:13:05,615 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:13:05,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497912923] [2022-10-17 17:13:05,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497912923] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:13:05,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394602977] [2022-10-17 17:13:05,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:13:05,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:13:05,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baec7b47-2e48-465e-b748-afd9e117544c/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:13:05,631 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baec7b47-2e48-465e-b748-afd9e117544c/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:13:05,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baec7b47-2e48-465e-b748-afd9e117544c/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-17 17:13:05,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:13:05,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 17:13:05,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:13:05,697 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:13:05,697 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:13:05,731 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:13:05,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394602977] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:13:05,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [196942079] [2022-10-17 17:13:05,735 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-10-17 17:13:05,735 INFO L166 IcfgInterpreter]: Building call graph [2022-10-17 17:13:05,736 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-10-17 17:13:05,736 INFO L176 IcfgInterpreter]: Starting interpretation [2022-10-17 17:13:05,736 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-10-17 17:13:05,907 INFO L180 IcfgInterpreter]: Interpretation finished [2022-10-17 17:13:06,207 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1581#(and (<= |ULTIMATE.start_main_~a~0#1| 2147483647) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~a~0#1|) (< 2147483646 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|))' at error location [2022-10-17 17:13:06,207 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-10-17 17:13:06,207 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 17:13:06,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-10-17 17:13:06,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931355003] [2022-10-17 17:13:06,208 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 17:13:06,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 17:13:06,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:13:06,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 17:13:06,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-10-17 17:13:06,209 INFO L87 Difference]: Start difference. First operand 196 states and 262 transitions. Second operand has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 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) [2022-10-17 17:13:06,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:13:06,259 INFO L93 Difference]: Finished difference Result 316 states and 420 transitions. [2022-10-17 17:13:06,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 17:13:06,260 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 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 13 [2022-10-17 17:13:06,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:13:06,263 INFO L225 Difference]: With dead ends: 316 [2022-10-17 17:13:06,263 INFO L226 Difference]: Without dead ends: 315 [2022-10-17 17:13:06,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-10-17 17:13:06,265 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 27 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 17:13:06,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 44 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 17:13:06,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2022-10-17 17:13:06,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 315. [2022-10-17 17:13:06,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 310 states have (on average 1.2741935483870968) internal successors, (395), 314 states have internal predecessors, (395), 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) [2022-10-17 17:13:06,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 395 transitions. [2022-10-17 17:13:06,291 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 395 transitions. Word has length 13 [2022-10-17 17:13:06,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:13:06,292 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 395 transitions. [2022-10-17 17:13:06,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 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) [2022-10-17 17:13:06,292 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 395 transitions. [2022-10-17 17:13:06,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-10-17 17:13:06,295 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:13:06,295 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1] [2022-10-17 17:13:06,330 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baec7b47-2e48-465e-b748-afd9e117544c/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-17 17:13:06,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baec7b47-2e48-465e-b748-afd9e117544c/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:13:06,519 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-17 17:13:06,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:13:06,519 INFO L85 PathProgramCache]: Analyzing trace with hash 2043316153, now seen corresponding path program 2 times [2022-10-17 17:13:06,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:13:06,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819197993] [2022-10-17 17:13:06,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:13:06,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:13:06,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:13:06,650 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:13:06,650 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:13:06,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819197993] [2022-10-17 17:13:06,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819197993] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:13:06,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [860836345] [2022-10-17 17:13:06,651 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-17 17:13:06,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:13:06,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baec7b47-2e48-465e-b748-afd9e117544c/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:13:06,652 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baec7b47-2e48-465e-b748-afd9e117544c/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:13:06,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baec7b47-2e48-465e-b748-afd9e117544c/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-17 17:13:06,712 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-10-17 17:13:06,713 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 17:13:06,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-17 17:13:06,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:13:06,776 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:13:06,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:13:06,867 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:13:06,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [860836345] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:13:06,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [836434570] [2022-10-17 17:13:06,870 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-10-17 17:13:06,871 INFO L166 IcfgInterpreter]: Building call graph [2022-10-17 17:13:06,871 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-10-17 17:13:06,871 INFO L176 IcfgInterpreter]: Starting interpretation [2022-10-17 17:13:06,872 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-10-17 17:13:06,995 INFO L180 IcfgInterpreter]: Interpretation finished [2022-10-17 17:13:07,311 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2484#(and (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_~a~0#1|) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|))' at error location [2022-10-17 17:13:07,311 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-10-17 17:13:07,311 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 17:13:07,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-10-17 17:13:07,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171855849] [2022-10-17 17:13:07,312 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 17:13:07,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-17 17:13:07,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:13:07,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-17 17:13:07,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=283, Unknown=0, NotChecked=0, Total=380 [2022-10-17 17:13:07,313 INFO L87 Difference]: Start difference. First operand 315 states and 395 transitions. Second operand has 12 states, 11 states have (on average 5.181818181818182) internal successors, (57), 12 states have internal predecessors, (57), 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) [2022-10-17 17:13:07,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:13:07,443 INFO L93 Difference]: Finished difference Result 718 states and 984 transitions. [2022-10-17 17:13:07,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-17 17:13:07,444 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.181818181818182) internal successors, (57), 12 states have internal predecessors, (57), 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 [2022-10-17 17:13:07,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:13:07,449 INFO L225 Difference]: With dead ends: 718 [2022-10-17 17:13:07,449 INFO L226 Difference]: Without dead ends: 716 [2022-10-17 17:13:07,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=97, Invalid=283, Unknown=0, NotChecked=0, Total=380 [2022-10-17 17:13:07,451 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 103 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:13:07,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 78 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:13:07,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2022-10-17 17:13:07,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 527. [2022-10-17 17:13:07,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 522 states have (on average 1.3007662835249043) internal successors, (679), 526 states have internal predecessors, (679), 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) [2022-10-17 17:13:07,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 679 transitions. [2022-10-17 17:13:07,481 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 679 transitions. Word has length 29 [2022-10-17 17:13:07,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:13:07,482 INFO L495 AbstractCegarLoop]: Abstraction has 527 states and 679 transitions. [2022-10-17 17:13:07,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.181818181818182) internal successors, (57), 12 states have internal predecessors, (57), 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) [2022-10-17 17:13:07,482 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 679 transitions. [2022-10-17 17:13:07,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-10-17 17:13:07,485 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:13:07,485 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1] [2022-10-17 17:13:07,523 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baec7b47-2e48-465e-b748-afd9e117544c/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-17 17:13:07,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baec7b47-2e48-465e-b748-afd9e117544c/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-10-17 17:13:07,699 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-17 17:13:07,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:13:07,699 INFO L85 PathProgramCache]: Analyzing trace with hash -357161224, now seen corresponding path program 2 times [2022-10-17 17:13:07,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:13:07,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425846507] [2022-10-17 17:13:07,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:13:07,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:13:07,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:13:07,785 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:13:07,785 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:13:07,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425846507] [2022-10-17 17:13:07,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425846507] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:13:07,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1921024251] [2022-10-17 17:13:07,786 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-17 17:13:07,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:13:07,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baec7b47-2e48-465e-b748-afd9e117544c/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:13:07,794 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baec7b47-2e48-465e-b748-afd9e117544c/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:13:07,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baec7b47-2e48-465e-b748-afd9e117544c/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-17 17:13:07,840 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-10-17 17:13:07,840 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 17:13:07,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-17 17:13:07,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:13:07,892 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:13:07,892 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:13:07,979 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:13:07,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1921024251] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:13:07,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [839307536] [2022-10-17 17:13:07,982 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-10-17 17:13:07,982 INFO L166 IcfgInterpreter]: Building call graph [2022-10-17 17:13:07,983 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-10-17 17:13:07,983 INFO L176 IcfgInterpreter]: Starting interpretation [2022-10-17 17:13:07,983 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-10-17 17:13:08,055 INFO L180 IcfgInterpreter]: Interpretation finished [2022-10-17 17:13:08,298 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4089#(and (< (+ 2147483647 |ULTIMATE.start_main_~a~0#1|) 0) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|))' at error location [2022-10-17 17:13:08,299 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-10-17 17:13:08,299 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 17:13:08,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-10-17 17:13:08,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396745312] [2022-10-17 17:13:08,299 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 17:13:08,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-17 17:13:08,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:13:08,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-17 17:13:08,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2022-10-17 17:13:08,301 INFO L87 Difference]: Start difference. First operand 527 states and 679 transitions. Second operand has 12 states, 11 states have (on average 5.363636363636363) internal successors, (59), 12 states have internal predecessors, (59), 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) [2022-10-17 17:13:08,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:13:08,452 INFO L93 Difference]: Finished difference Result 1325 states and 1829 transitions. [2022-10-17 17:13:08,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-17 17:13:08,453 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.363636363636363) internal successors, (59), 12 states have internal predecessors, (59), 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 30 [2022-10-17 17:13:08,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:13:08,461 INFO L225 Difference]: With dead ends: 1325 [2022-10-17 17:13:08,461 INFO L226 Difference]: Without dead ends: 1323 [2022-10-17 17:13:08,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2022-10-17 17:13:08,463 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 97 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:13:08,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 69 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:13:08,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1323 states. [2022-10-17 17:13:08,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1323 to 816. [2022-10-17 17:13:08,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 816 states, 811 states have (on average 1.311960542540074) internal successors, (1064), 815 states have internal predecessors, (1064), 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) [2022-10-17 17:13:08,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1064 transitions. [2022-10-17 17:13:08,513 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1064 transitions. Word has length 30 [2022-10-17 17:13:08,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:13:08,514 INFO L495 AbstractCegarLoop]: Abstraction has 816 states and 1064 transitions. [2022-10-17 17:13:08,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.363636363636363) internal successors, (59), 12 states have internal predecessors, (59), 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) [2022-10-17 17:13:08,514 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1064 transitions. [2022-10-17 17:13:08,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-10-17 17:13:08,516 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:13:08,516 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1] [2022-10-17 17:13:08,553 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baec7b47-2e48-465e-b748-afd9e117544c/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-10-17 17:13:08,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baec7b47-2e48-465e-b748-afd9e117544c/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-10-17 17:13:08,731 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-17 17:13:08,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:13:08,731 INFO L85 PathProgramCache]: Analyzing trace with hash 826770402, now seen corresponding path program 2 times [2022-10-17 17:13:08,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:13:08,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761598363] [2022-10-17 17:13:08,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:13:08,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:13:08,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:13:08,815 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:13:08,816 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:13:08,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761598363] [2022-10-17 17:13:08,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761598363] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:13:08,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760133978] [2022-10-17 17:13:08,816 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-17 17:13:08,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:13:08,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baec7b47-2e48-465e-b748-afd9e117544c/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:13:08,819 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baec7b47-2e48-465e-b748-afd9e117544c/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:13:08,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baec7b47-2e48-465e-b748-afd9e117544c/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-10-17 17:13:08,858 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-10-17 17:13:08,858 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 17:13:08,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-17 17:13:08,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:13:08,906 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:13:08,906 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:13:08,997 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:13:08,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1760133978] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:13:08,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1377201550] [2022-10-17 17:13:08,999 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-10-17 17:13:08,999 INFO L166 IcfgInterpreter]: Building call graph [2022-10-17 17:13:09,000 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-10-17 17:13:09,000 INFO L176 IcfgInterpreter]: Starting interpretation [2022-10-17 17:13:09,000 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-10-17 17:13:09,179 INFO L180 IcfgInterpreter]: Interpretation finished [2022-10-17 17:13:09,453 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6720#(and (<= |ULTIMATE.start_main_~a~0#1| 2147483647) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~a~0#1|) (< 2147483646 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|))' at error location [2022-10-17 17:13:09,454 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-10-17 17:13:09,454 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 17:13:09,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-10-17 17:13:09,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583216349] [2022-10-17 17:13:09,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 17:13:09,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-17 17:13:09,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:13:09,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-17 17:13:09,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2022-10-17 17:13:09,456 INFO L87 Difference]: Start difference. First operand 816 states and 1064 transitions. Second operand has 12 states, 11 states have (on average 5.545454545454546) internal successors, (61), 12 states have internal predecessors, (61), 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) [2022-10-17 17:13:09,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:13:09,586 INFO L93 Difference]: Finished difference Result 2024 states and 2646 transitions. [2022-10-17 17:13:09,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-17 17:13:09,586 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.545454545454546) internal successors, (61), 12 states have internal predecessors, (61), 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 31 [2022-10-17 17:13:09,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:13:09,598 INFO L225 Difference]: With dead ends: 2024 [2022-10-17 17:13:09,599 INFO L226 Difference]: Without dead ends: 2023 [2022-10-17 17:13:09,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2022-10-17 17:13:09,602 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 87 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 17:13:09,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 80 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 17:13:09,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2023 states. [2022-10-17 17:13:09,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2023 to 2023. [2022-10-17 17:13:09,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2023 states, 2018 states have (on average 1.207631318136769) internal successors, (2437), 2022 states have internal predecessors, (2437), 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) [2022-10-17 17:13:09,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2023 states to 2023 states and 2437 transitions. [2022-10-17 17:13:09,753 INFO L78 Accepts]: Start accepts. Automaton has 2023 states and 2437 transitions. Word has length 31 [2022-10-17 17:13:09,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:13:09,753 INFO L495 AbstractCegarLoop]: Abstraction has 2023 states and 2437 transitions. [2022-10-17 17:13:09,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.545454545454546) internal successors, (61), 12 states have internal predecessors, (61), 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) [2022-10-17 17:13:09,754 INFO L276 IsEmpty]: Start isEmpty. Operand 2023 states and 2437 transitions. [2022-10-17 17:13:09,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-10-17 17:13:09,761 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:13:09,761 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 1, 1, 1] [2022-10-17 17:13:09,794 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baec7b47-2e48-465e-b748-afd9e117544c/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-10-17 17:13:09,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baec7b47-2e48-465e-b748-afd9e117544c/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:13:09,975 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-17 17:13:09,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:13:09,975 INFO L85 PathProgramCache]: Analyzing trace with hash 84797903, now seen corresponding path program 3 times [2022-10-17 17:13:09,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:13:09,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409101152] [2022-10-17 17:13:09,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:13:09,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:13:09,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:13:10,219 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:13:10,220 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:13:10,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409101152] [2022-10-17 17:13:10,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409101152] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:13:10,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [750977178] [2022-10-17 17:13:10,220 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-17 17:13:10,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:13:10,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baec7b47-2e48-465e-b748-afd9e117544c/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:13:10,221 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baec7b47-2e48-465e-b748-afd9e117544c/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:13:10,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baec7b47-2e48-465e-b748-afd9e117544c/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-10-17 17:13:10,283 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-17 17:13:10,284 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 17:13:10,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 12 conjunts are in the unsatisfiable core [2022-10-17 17:13:10,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:13:10,373 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:13:10,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:13:10,620 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:13:10,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [750977178] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:13:10,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2039753386] [2022-10-17 17:13:10,623 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-10-17 17:13:10,623 INFO L166 IcfgInterpreter]: Building call graph [2022-10-17 17:13:10,624 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-10-17 17:13:10,624 INFO L176 IcfgInterpreter]: Starting interpretation [2022-10-17 17:13:10,624 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-10-17 17:13:10,763 INFO L180 IcfgInterpreter]: Interpretation finished [2022-10-17 17:13:11,069 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '11743#(and (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_~a~0#1|) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|))' at error location [2022-10-17 17:13:11,069 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-10-17 17:13:11,069 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 17:13:11,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2022-10-17 17:13:11,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080741230] [2022-10-17 17:13:11,070 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 17:13:11,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-10-17 17:13:11,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:13:11,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-10-17 17:13:11,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=307, Invalid=685, Unknown=0, NotChecked=0, Total=992 [2022-10-17 17:13:11,073 INFO L87 Difference]: Start difference. First operand 2023 states and 2437 transitions. Second operand has 24 states, 23 states have (on average 5.608695652173913) internal successors, (129), 24 states have internal predecessors, (129), 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) [2022-10-17 17:13:11,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:13:11,470 INFO L93 Difference]: Finished difference Result 4679 states and 6143 transitions. [2022-10-17 17:13:11,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-10-17 17:13:11,471 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 5.608695652173913) internal successors, (129), 24 states have internal predecessors, (129), 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 [2022-10-17 17:13:11,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:13:11,497 INFO L225 Difference]: With dead ends: 4679 [2022-10-17 17:13:11,497 INFO L226 Difference]: Without dead ends: 4677 [2022-10-17 17:13:11,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=307, Invalid=685, Unknown=0, NotChecked=0, Total=992 [2022-10-17 17:13:11,503 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 208 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 17:13:11,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 160 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 17:13:11,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4677 states. [2022-10-17 17:13:11,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4677 to 3082. [2022-10-17 17:13:11,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3082 states, 3077 states have (on average 1.2317192070198244) internal successors, (3790), 3081 states have internal predecessors, (3790), 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) [2022-10-17 17:13:11,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3082 states to 3082 states and 3790 transitions. [2022-10-17 17:13:11,731 INFO L78 Accepts]: Start accepts. Automaton has 3082 states and 3790 transitions. Word has length 65 [2022-10-17 17:13:11,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:13:11,732 INFO L495 AbstractCegarLoop]: Abstraction has 3082 states and 3790 transitions. [2022-10-17 17:13:11,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 5.608695652173913) internal successors, (129), 24 states have internal predecessors, (129), 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) [2022-10-17 17:13:11,732 INFO L276 IsEmpty]: Start isEmpty. Operand 3082 states and 3790 transitions. [2022-10-17 17:13:11,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-10-17 17:13:11,737 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:13:11,737 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 1, 1, 1] [2022-10-17 17:13:11,775 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baec7b47-2e48-465e-b748-afd9e117544c/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-10-17 17:13:11,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baec7b47-2e48-465e-b748-afd9e117544c/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:13:11,958 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-17 17:13:11,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:13:11,959 INFO L85 PathProgramCache]: Analyzing trace with hash 419659974, now seen corresponding path program 3 times [2022-10-17 17:13:11,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:13:11,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261310593] [2022-10-17 17:13:11,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:13:11,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:13:11,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:13:12,175 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:13:12,175 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:13:12,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261310593] [2022-10-17 17:13:12,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261310593] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:13:12,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790560064] [2022-10-17 17:13:12,176 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-17 17:13:12,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:13:12,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baec7b47-2e48-465e-b748-afd9e117544c/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:13:12,182 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baec7b47-2e48-465e-b748-afd9e117544c/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:13:12,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baec7b47-2e48-465e-b748-afd9e117544c/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-10-17 17:13:12,238 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-17 17:13:12,239 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 17:13:12,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjunts are in the unsatisfiable core [2022-10-17 17:13:12,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:13:12,364 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:13:12,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:13:12,679 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:13:12,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [790560064] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:13:12,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [915804285] [2022-10-17 17:13:12,682 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-10-17 17:13:12,682 INFO L166 IcfgInterpreter]: Building call graph [2022-10-17 17:13:12,682 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-10-17 17:13:12,682 INFO L176 IcfgInterpreter]: Starting interpretation [2022-10-17 17:13:12,683 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-10-17 17:13:12,744 INFO L180 IcfgInterpreter]: Interpretation finished [2022-10-17 17:13:12,992 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '20962#(and (< (+ 2147483647 |ULTIMATE.start_main_~a~0#1|) 0) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|))' at error location [2022-10-17 17:13:12,993 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-10-17 17:13:12,993 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 17:13:12,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2022-10-17 17:13:12,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917357680] [2022-10-17 17:13:12,993 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 17:13:12,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-10-17 17:13:12,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:13:12,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-10-17 17:13:12,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=303, Invalid=627, Unknown=0, NotChecked=0, Total=930 [2022-10-17 17:13:12,996 INFO L87 Difference]: Start difference. First operand 3082 states and 3790 transitions. Second operand has 24 states, 23 states have (on average 5.695652173913044) internal successors, (131), 24 states have internal predecessors, (131), 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) [2022-10-17 17:13:13,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:13:13,563 INFO L93 Difference]: Finished difference Result 7642 states and 10096 transitions. [2022-10-17 17:13:13,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-10-17 17:13:13,564 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 5.695652173913044) internal successors, (131), 24 states have internal predecessors, (131), 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 66 [2022-10-17 17:13:13,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:13:13,606 INFO L225 Difference]: With dead ends: 7642 [2022-10-17 17:13:13,607 INFO L226 Difference]: Without dead ends: 7640 [2022-10-17 17:13:13,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=303, Invalid=627, Unknown=0, NotChecked=0, Total=930 [2022-10-17 17:13:13,615 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 333 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 17:13:13,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [333 Valid, 141 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 17:13:13,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7640 states. [2022-10-17 17:13:13,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7640 to 3904. [2022-10-17 17:13:13,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3904 states, 3899 states have (on average 1.24852526288792) internal successors, (4868), 3903 states have internal predecessors, (4868), 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) [2022-10-17 17:13:13,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3904 states to 3904 states and 4868 transitions. [2022-10-17 17:13:13,950 INFO L78 Accepts]: Start accepts. Automaton has 3904 states and 4868 transitions. Word has length 66 [2022-10-17 17:13:13,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:13:13,952 INFO L495 AbstractCegarLoop]: Abstraction has 3904 states and 4868 transitions. [2022-10-17 17:13:13,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 5.695652173913044) internal successors, (131), 24 states have internal predecessors, (131), 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) [2022-10-17 17:13:13,952 INFO L276 IsEmpty]: Start isEmpty. Operand 3904 states and 4868 transitions. [2022-10-17 17:13:13,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-10-17 17:13:13,958 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:13:13,958 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 1, 1, 1] [2022-10-17 17:13:14,002 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baec7b47-2e48-465e-b748-afd9e117544c/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-10-17 17:13:14,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baec7b47-2e48-465e-b748-afd9e117544c/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-10-17 17:13:14,171 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-17 17:13:14,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:13:14,171 INFO L85 PathProgramCache]: Analyzing trace with hash -113592200, now seen corresponding path program 3 times [2022-10-17 17:13:14,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:13:14,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505257233] [2022-10-17 17:13:14,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:13:14,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:13:14,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:13:14,393 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:13:14,394 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:13:14,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505257233] [2022-10-17 17:13:14,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505257233] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:13:14,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [822736951] [2022-10-17 17:13:14,394 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-17 17:13:14,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:13:14,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baec7b47-2e48-465e-b748-afd9e117544c/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:13:14,399 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baec7b47-2e48-465e-b748-afd9e117544c/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:13:14,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baec7b47-2e48-465e-b748-afd9e117544c/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-10-17 17:13:14,453 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-17 17:13:14,453 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 17:13:14,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 12 conjunts are in the unsatisfiable core [2022-10-17 17:13:14,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:13:14,539 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:13:14,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:13:14,825 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:13:14,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [822736951] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:13:14,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [732946655] [2022-10-17 17:13:14,829 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-10-17 17:13:14,830 INFO L166 IcfgInterpreter]: Building call graph [2022-10-17 17:13:14,830 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-10-17 17:13:14,830 INFO L176 IcfgInterpreter]: Starting interpretation [2022-10-17 17:13:14,830 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-10-17 17:13:14,969 INFO L180 IcfgInterpreter]: Interpretation finished [2022-10-17 17:13:15,283 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '34469#(and (<= |ULTIMATE.start_main_~a~0#1| 2147483647) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~a~0#1|) (< 2147483646 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|))' at error location [2022-10-17 17:13:15,284 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-10-17 17:13:15,284 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 17:13:15,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2022-10-17 17:13:15,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240502315] [2022-10-17 17:13:15,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 17:13:15,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-10-17 17:13:15,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:13:15,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-10-17 17:13:15,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=308, Invalid=684, Unknown=0, NotChecked=0, Total=992 [2022-10-17 17:13:15,288 INFO L87 Difference]: Start difference. First operand 3904 states and 4868 transitions. Second operand has 24 states, 23 states have (on average 5.782608695652174) internal successors, (133), 24 states have internal predecessors, (133), 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) [2022-10-17 17:13:16,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:13:16,191 INFO L93 Difference]: Finished difference Result 13793 states and 17626 transitions. [2022-10-17 17:13:16,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-10-17 17:13:16,192 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 5.782608695652174) internal successors, (133), 24 states have internal predecessors, (133), 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 67 [2022-10-17 17:13:16,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:13:16,255 INFO L225 Difference]: With dead ends: 13793 [2022-10-17 17:13:16,255 INFO L226 Difference]: Without dead ends: 13792 [2022-10-17 17:13:16,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=308, Invalid=684, Unknown=0, NotChecked=0, Total=992 [2022-10-17 17:13:16,267 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 171 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:13:16,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 160 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:13:16,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13792 states. [2022-10-17 17:13:17,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13792 to 13792. [2022-10-17 17:13:17,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13792 states, 13787 states have (on average 1.1689272503082615) internal successors, (16116), 13791 states have internal predecessors, (16116), 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) [2022-10-17 17:13:17,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13792 states to 13792 states and 16116 transitions. [2022-10-17 17:13:17,290 INFO L78 Accepts]: Start accepts. Automaton has 13792 states and 16116 transitions. Word has length 67 [2022-10-17 17:13:17,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:13:17,291 INFO L495 AbstractCegarLoop]: Abstraction has 13792 states and 16116 transitions. [2022-10-17 17:13:17,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 5.782608695652174) internal successors, (133), 24 states have internal predecessors, (133), 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) [2022-10-17 17:13:17,291 INFO L276 IsEmpty]: Start isEmpty. Operand 13792 states and 16116 transitions. [2022-10-17 17:13:17,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-10-17 17:13:17,322 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:13:17,322 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 22, 22, 22, 22, 1, 1, 1] [2022-10-17 17:13:17,405 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baec7b47-2e48-465e-b748-afd9e117544c/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-10-17 17:13:17,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baec7b47-2e48-465e-b748-afd9e117544c/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-10-17 17:13:17,593 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-17 17:13:17,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:13:17,594 INFO L85 PathProgramCache]: Analyzing trace with hash 65778939, now seen corresponding path program 4 times [2022-10-17 17:13:17,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:13:17,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548911854] [2022-10-17 17:13:17,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:13:17,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:13:17,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:13:18,510 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 0 proven. 1452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:13:18,510 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:13:18,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548911854] [2022-10-17 17:13:18,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548911854] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:13:18,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301744607] [2022-10-17 17:13:18,511 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-10-17 17:13:18,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:13:18,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baec7b47-2e48-465e-b748-afd9e117544c/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:13:18,515 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baec7b47-2e48-465e-b748-afd9e117544c/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:13:18,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baec7b47-2e48-465e-b748-afd9e117544c/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-10-17 17:13:18,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:13:18,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 24 conjunts are in the unsatisfiable core [2022-10-17 17:13:18,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:13:18,800 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 0 proven. 1452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:13:18,801 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:13:19,705 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 0 proven. 1452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:13:19,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1301744607] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:13:19,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1758146320] [2022-10-17 17:13:19,708 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-10-17 17:13:19,709 INFO L166 IcfgInterpreter]: Building call graph [2022-10-17 17:13:19,709 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-10-17 17:13:19,709 INFO L176 IcfgInterpreter]: Starting interpretation [2022-10-17 17:13:19,709 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-10-17 17:13:19,843 INFO L180 IcfgInterpreter]: Interpretation finished [2022-10-17 17:13:20,175 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '66706#(and (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_~a~0#1|) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|))' at error location [2022-10-17 17:13:20,175 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-10-17 17:13:20,175 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 17:13:20,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2022-10-17 17:13:20,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451926775] [2022-10-17 17:13:20,176 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 17:13:20,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-10-17 17:13:20,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:13:20,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-10-17 17:13:20,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1159, Invalid=1921, Unknown=0, NotChecked=0, Total=3080 [2022-10-17 17:13:20,180 INFO L87 Difference]: Start difference. First operand 13792 states and 16116 transitions. Second operand has 48 states, 47 states have (on average 5.808510638297872) internal successors, (273), 48 states have internal predecessors, (273), 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) [2022-10-17 17:13:21,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:13:21,969 INFO L93 Difference]: Finished difference Result 32911 states and 41407 transitions. [2022-10-17 17:13:21,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-10-17 17:13:21,971 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 5.808510638297872) internal successors, (273), 48 states have internal predecessors, (273), 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 [2022-10-17 17:13:21,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:13:22,033 INFO L225 Difference]: With dead ends: 32911 [2022-10-17 17:13:22,034 INFO L226 Difference]: Without dead ends: 32909 [2022-10-17 17:13:22,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 379 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 549 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1159, Invalid=1921, Unknown=0, NotChecked=0, Total=3080 [2022-10-17 17:13:22,063 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 617 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 417 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 617 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 417 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-17 17:13:22,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [617 Valid, 320 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [417 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-17 17:13:22,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32909 states. [2022-10-17 17:13:23,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32909 to 18774. [2022-10-17 17:13:23,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18774 states, 18769 states have (on average 1.1893015078054239) internal successors, (22322), 18773 states have internal predecessors, (22322), 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) [2022-10-17 17:13:23,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18774 states to 18774 states and 22322 transitions. [2022-10-17 17:13:23,784 INFO L78 Accepts]: Start accepts. Automaton has 18774 states and 22322 transitions. Word has length 137 [2022-10-17 17:13:23,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:13:23,785 INFO L495 AbstractCegarLoop]: Abstraction has 18774 states and 22322 transitions. [2022-10-17 17:13:23,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 5.808510638297872) internal successors, (273), 48 states have internal predecessors, (273), 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) [2022-10-17 17:13:23,786 INFO L276 IsEmpty]: Start isEmpty. Operand 18774 states and 22322 transitions. [2022-10-17 17:13:23,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-10-17 17:13:23,815 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:13:23,815 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 22, 22, 22, 1, 1, 1] [2022-10-17 17:13:23,852 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baec7b47-2e48-465e-b748-afd9e117544c/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-10-17 17:13:24,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baec7b47-2e48-465e-b748-afd9e117544c/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:13:24,031 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-17 17:13:24,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:13:24,031 INFO L85 PathProgramCache]: Analyzing trace with hash 110413666, now seen corresponding path program 4 times [2022-10-17 17:13:24,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:13:24,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188782839] [2022-10-17 17:13:24,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:13:24,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:13:24,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:13:24,680 INFO L134 CoverageAnalysis]: Checked inductivity of 1474 backedges. 0 proven. 1474 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:13:24,681 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:13:24,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188782839] [2022-10-17 17:13:24,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188782839] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:13:24,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347963206] [2022-10-17 17:13:24,681 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-10-17 17:13:24,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:13:24,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baec7b47-2e48-465e-b748-afd9e117544c/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:13:24,683 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baec7b47-2e48-465e-b748-afd9e117544c/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:13:24,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baec7b47-2e48-465e-b748-afd9e117544c/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-10-17 17:13:24,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:13:24,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 24 conjunts are in the unsatisfiable core [2022-10-17 17:13:24,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:13:24,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1474 backedges. 0 proven. 1474 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:13:24,936 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:13:25,764 INFO L134 CoverageAnalysis]: Checked inductivity of 1474 backedges. 0 proven. 1474 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:13:25,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347963206] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:13:25,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1001008120] [2022-10-17 17:13:25,767 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-10-17 17:13:25,767 INFO L166 IcfgInterpreter]: Building call graph [2022-10-17 17:13:25,768 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-10-17 17:13:25,768 INFO L176 IcfgInterpreter]: Starting interpretation [2022-10-17 17:13:25,768 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-10-17 17:13:25,826 INFO L180 IcfgInterpreter]: Interpretation finished [2022-10-17 17:13:26,074 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '126087#(and (< (+ 2147483647 |ULTIMATE.start_main_~a~0#1|) 0) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|))' at error location [2022-10-17 17:13:26,074 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-10-17 17:13:26,074 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 17:13:26,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2022-10-17 17:13:26,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143250096] [2022-10-17 17:13:26,075 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 17:13:26,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-10-17 17:13:26,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:13:26,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-10-17 17:13:26,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1155, Invalid=1815, Unknown=0, NotChecked=0, Total=2970 [2022-10-17 17:13:26,078 INFO L87 Difference]: Start difference. First operand 18774 states and 22322 transitions. Second operand has 48 states, 47 states have (on average 5.851063829787234) internal successors, (275), 48 states have internal predecessors, (275), 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) [2022-10-17 17:13:28,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:13:28,500 INFO L93 Difference]: Finished difference Result 50455 states and 64089 transitions. [2022-10-17 17:13:28,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-10-17 17:13:28,510 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 5.851063829787234) internal successors, (275), 48 states have internal predecessors, (275), 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 138 [2022-10-17 17:13:28,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:13:28,579 INFO L225 Difference]: With dead ends: 50455 [2022-10-17 17:13:28,580 INFO L226 Difference]: Without dead ends: 50453 [2022-10-17 17:13:28,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 383 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1155, Invalid=1815, Unknown=0, NotChecked=0, Total=2970 [2022-10-17 17:13:28,593 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 571 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 425 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 571 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 425 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-17 17:13:28,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [571 Valid, 285 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [425 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-17 17:13:28,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50453 states. [2022-10-17 17:13:30,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50453 to 21600. [2022-10-17 17:13:30,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21600 states, 21595 states have (on average 1.201203982403334) internal successors, (25940), 21599 states have internal predecessors, (25940), 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) [2022-10-17 17:13:30,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21600 states to 21600 states and 25940 transitions. [2022-10-17 17:13:30,424 INFO L78 Accepts]: Start accepts. Automaton has 21600 states and 25940 transitions. Word has length 138 [2022-10-17 17:13:30,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:13:30,425 INFO L495 AbstractCegarLoop]: Abstraction has 21600 states and 25940 transitions. [2022-10-17 17:13:30,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 5.851063829787234) internal successors, (275), 48 states have internal predecessors, (275), 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) [2022-10-17 17:13:30,425 INFO L276 IsEmpty]: Start isEmpty. Operand 21600 states and 25940 transitions. [2022-10-17 17:13:30,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-10-17 17:13:30,454 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:13:30,455 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 23, 22, 22, 1, 1, 1] [2022-10-17 17:13:30,491 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baec7b47-2e48-465e-b748-afd9e117544c/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-10-17 17:13:30,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baec7b47-2e48-465e-b748-afd9e117544c/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-10-17 17:13:30,671 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-17 17:13:30,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:13:30,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1210947420, now seen corresponding path program 4 times [2022-10-17 17:13:30,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:13:30,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073449409] [2022-10-17 17:13:30,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:13:30,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:13:30,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat