./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/ChawdharyCookGulwaniSagivYang-ESOP2008-easy2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1145228-e5e3-4d68-a511-791bd24283fb/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1145228-e5e3-4d68-a511-791bd24283fb/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1145228-e5e3-4d68-a511-791bd24283fb/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1145228-e5e3-4d68-a511-791bd24283fb/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/ChawdharyCookGulwaniSagivYang-ESOP2008-easy2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1145228-e5e3-4d68-a511-791bd24283fb/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1145228-e5e3-4d68-a511-791bd24283fb/bin/utaipan-Q6hlc19bkW --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 5ecb51c2655999223e2701919887f64497e4c0c5e2f563d3d5ecc5c1480b1b8e --- 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-4e7fbc6 [2022-11-23 15:29:32,273 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:29:32,275 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:29:32,316 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:29:32,316 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:29:32,317 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:29:32,319 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:29:32,321 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:29:32,331 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:29:32,340 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:29:32,341 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:29:32,342 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:29:32,343 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:29:32,344 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:29:32,345 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:29:32,350 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:29:32,352 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:29:32,355 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:29:32,357 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:29:32,365 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:29:32,367 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:29:32,373 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:29:32,375 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:29:32,375 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:29:32,379 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:29:32,379 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:29:32,380 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:29:32,381 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:29:32,381 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:29:32,382 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:29:32,382 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:29:32,390 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:29:32,392 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:29:32,393 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:29:32,395 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:29:32,395 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:29:32,396 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:29:32,396 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:29:32,397 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:29:32,401 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:29:32,402 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:29:32,403 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1145228-e5e3-4d68-a511-791bd24283fb/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-11-23 15:29:32,448 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:29:32,448 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:29:32,449 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:29:32,449 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:29:32,450 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:29:32,450 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:29:32,451 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:29:32,451 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:29:32,451 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:29:32,451 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:29:32,453 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:29:32,453 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:29:32,453 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:29:32,453 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:29:32,454 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:29:32,454 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:29:32,454 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:29:32,454 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:29:32,455 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:29:32,455 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 15:29:32,456 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:29:32,456 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:29:32,456 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:29:32,456 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:29:32,457 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:29:32,457 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-23 15:29:32,458 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:29:32,458 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:29:32,458 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:29:32,458 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:29:32,459 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:29:32,459 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:29:32,459 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:29:32,460 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:29:32,460 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:29:32,460 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:29:32,460 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:29:32,461 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:29:32,461 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:29:32,461 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:29:32,461 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_c1145228-e5e3-4d68-a511-791bd24283fb/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1145228-e5e3-4d68-a511-791bd24283fb/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5ecb51c2655999223e2701919887f64497e4c0c5e2f563d3d5ecc5c1480b1b8e [2022-11-23 15:29:32,855 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:29:32,884 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:29:32,887 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:29:32,888 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:29:32,889 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:29:32,890 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1145228-e5e3-4d68-a511-791bd24283fb/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/termination-crafted-lit/ChawdharyCookGulwaniSagivYang-ESOP2008-easy2.c [2022-11-23 15:29:36,079 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:29:36,313 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:29:36,313 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1145228-e5e3-4d68-a511-791bd24283fb/sv-benchmarks/c/termination-crafted-lit/ChawdharyCookGulwaniSagivYang-ESOP2008-easy2.c [2022-11-23 15:29:36,320 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1145228-e5e3-4d68-a511-791bd24283fb/bin/utaipan-Q6hlc19bkW/data/8b5b1b3af/57c22d4f58a44d7d931db217406344a3/FLAGed8d0a0db [2022-11-23 15:29:36,347 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1145228-e5e3-4d68-a511-791bd24283fb/bin/utaipan-Q6hlc19bkW/data/8b5b1b3af/57c22d4f58a44d7d931db217406344a3 [2022-11-23 15:29:36,353 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:29:36,355 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:29:36,359 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:29:36,360 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:29:36,363 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:29:36,364 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:29:36" (1/1) ... [2022-11-23 15:29:36,365 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2800fc84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:36, skipping insertion in model container [2022-11-23 15:29:36,366 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:29:36" (1/1) ... [2022-11-23 15:29:36,375 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:29:36,395 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:29:36,637 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:29:36,642 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:29:36,655 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:29:36,665 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:29:36,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:36 WrapperNode [2022-11-23 15:29:36,665 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:29:36,666 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:29:36,667 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:29:36,667 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:29:36,673 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:36" (1/1) ... [2022-11-23 15:29:36,677 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:36" (1/1) ... [2022-11-23 15:29:36,692 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 22 [2022-11-23 15:29:36,693 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:29:36,694 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:29:36,694 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:29:36,694 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:29:36,703 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:36" (1/1) ... [2022-11-23 15:29:36,703 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:36" (1/1) ... [2022-11-23 15:29:36,704 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:36" (1/1) ... [2022-11-23 15:29:36,704 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:36" (1/1) ... [2022-11-23 15:29:36,705 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:36" (1/1) ... [2022-11-23 15:29:36,711 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:36" (1/1) ... [2022-11-23 15:29:36,712 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:36" (1/1) ... [2022-11-23 15:29:36,713 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:36" (1/1) ... [2022-11-23 15:29:36,718 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:29:36,722 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:29:36,722 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:29:36,722 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:29:36,723 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:36" (1/1) ... [2022-11-23 15:29:36,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:29:36,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1145228-e5e3-4d68-a511-791bd24283fb/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:29:36,757 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1145228-e5e3-4d68-a511-791bd24283fb/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:29:36,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1145228-e5e3-4d68-a511-791bd24283fb/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:29:36,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:29:36,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:29:36,857 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:29:36,859 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:29:36,961 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:29:36,981 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:29:36,981 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 15:29:36,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:29:36 BoogieIcfgContainer [2022-11-23 15:29:36,984 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:29:36,987 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:29:36,987 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:29:36,990 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:29:36,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:29:36" (1/3) ... [2022-11-23 15:29:36,991 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@579bfa49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:29:36, skipping insertion in model container [2022-11-23 15:29:36,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:29:36" (2/3) ... [2022-11-23 15:29:36,992 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@579bfa49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:29:36, skipping insertion in model container [2022-11-23 15:29:36,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:29:36" (3/3) ... [2022-11-23 15:29:36,994 INFO L112 eAbstractionObserver]: Analyzing ICFG ChawdharyCookGulwaniSagivYang-ESOP2008-easy2.c [2022-11-23 15:29:37,015 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:29:37,015 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-23 15:29:37,067 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:29:37,073 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;@36412822, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:29:37,074 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-23 15:29:37,077 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 8 states have (on average 1.875) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:29:37,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-23 15:29:37,083 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:29:37,083 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-23 15:29:37,084 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)] === [2022-11-23 15:29:37,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:29:37,089 INFO L85 PathProgramCache]: Analyzing trace with hash 60896, now seen corresponding path program 1 times [2022-11-23 15:29:37,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:29:37,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846056121] [2022-11-23 15:29:37,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:29:37,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:29:37,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:29:37,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:29:37,252 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:29:37,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846056121] [2022-11-23 15:29:37,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846056121] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:29:37,254 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:29:37,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 15:29:37,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329697841] [2022-11-23 15:29:37,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:29:37,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:29:37,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:29:37,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:29:37,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:29:37,343 INFO L87 Difference]: Start difference. First operand has 15 states, 8 states have (on average 1.875) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:29:37,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:29:37,398 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2022-11-23 15:29:37,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:29:37,401 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-23 15:29:37,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:29:37,409 INFO L225 Difference]: With dead ends: 15 [2022-11-23 15:29:37,409 INFO L226 Difference]: Without dead ends: 13 [2022-11-23 15:29:37,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:29:37,436 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 11 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:29:37,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 9 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 15:29:37,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-11-23 15:29:37,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-11-23 15:29:37,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 8 states have (on average 1.625) internal successors, (13), 12 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:29:37,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2022-11-23 15:29:37,472 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 3 [2022-11-23 15:29:37,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:29:37,473 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2022-11-23 15:29:37,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:29:37,475 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2022-11-23 15:29:37,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-23 15:29:37,476 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:29:37,476 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-23 15:29:37,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 15:29:37,477 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)] === [2022-11-23 15:29:37,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:29:37,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1887821, now seen corresponding path program 1 times [2022-11-23 15:29:37,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:29:37,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419750413] [2022-11-23 15:29:37,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:29:37,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:29:37,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:29:37,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:29:37,530 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:29:37,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419750413] [2022-11-23 15:29:37,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419750413] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:29:37,530 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:29:37,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 15:29:37,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458049726] [2022-11-23 15:29:37,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:29:37,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:29:37,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:29:37,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:29:37,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:29:37,534 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:29:37,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:29:37,568 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2022-11-23 15:29:37,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:29:37,569 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-23 15:29:37,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:29:37,570 INFO L225 Difference]: With dead ends: 17 [2022-11-23 15:29:37,570 INFO L226 Difference]: Without dead ends: 16 [2022-11-23 15:29:37,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:29:37,572 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:29:37,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 15:29:37,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-11-23 15:29:37,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-11-23 15:29:37,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 15 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:29:37,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2022-11-23 15:29:37,577 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 4 [2022-11-23 15:29:37,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:29:37,578 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2022-11-23 15:29:37,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:29:37,578 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2022-11-23 15:29:37,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-23 15:29:37,579 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:29:37,579 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-23 15:29:37,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 15:29:37,580 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 15:29:37,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:29:37,580 INFO L85 PathProgramCache]: Analyzing trace with hash 58522498, now seen corresponding path program 1 times [2022-11-23 15:29:37,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:29:37,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176414878] [2022-11-23 15:29:37,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:29:37,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:29:37,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:29:37,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:29:37,661 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:29:37,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176414878] [2022-11-23 15:29:37,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176414878] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:29:37,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:29:37,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 15:29:37,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258665959] [2022-11-23 15:29:37,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:29:37,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:29:37,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:29:37,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:29:37,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:29:37,664 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:29:37,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:29:37,681 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2022-11-23 15:29:37,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:29:37,682 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-23 15:29:37,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:29:37,682 INFO L225 Difference]: With dead ends: 19 [2022-11-23 15:29:37,683 INFO L226 Difference]: Without dead ends: 18 [2022-11-23 15:29:37,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:29:37,684 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 2 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:29:37,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 17 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 15:29:37,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-11-23 15:29:37,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2022-11-23 15:29:37,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 16 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:29:37,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2022-11-23 15:29:37,691 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 5 [2022-11-23 15:29:37,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:29:37,691 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2022-11-23 15:29:37,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:29:37,692 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2022-11-23 15:29:37,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-23 15:29:37,692 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:29:37,692 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-23 15:29:37,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 15:29:37,693 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 15:29:37,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:29:37,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1814197487, now seen corresponding path program 1 times [2022-11-23 15:29:37,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:29:37,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545951263] [2022-11-23 15:29:37,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:29:37,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:29:37,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:29:37,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:29:37,758 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:29:37,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545951263] [2022-11-23 15:29:37,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545951263] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:29:37,759 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:29:37,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 15:29:37,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359479354] [2022-11-23 15:29:37,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:29:37,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:29:37,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:29:37,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:29:37,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:29:37,762 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:29:37,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:29:37,785 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2022-11-23 15:29:37,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:29:37,786 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-23 15:29:37,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:29:37,787 INFO L225 Difference]: With dead ends: 17 [2022-11-23 15:29:37,787 INFO L226 Difference]: Without dead ends: 16 [2022-11-23 15:29:37,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:29:37,789 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 6 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:29:37,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 8 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 15:29:37,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-11-23 15:29:37,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-11-23 15:29:37,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 15 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:29:37,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2022-11-23 15:29:37,793 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 6 [2022-11-23 15:29:37,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:29:37,794 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2022-11-23 15:29:37,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:29:37,794 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2022-11-23 15:29:37,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-23 15:29:37,795 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:29:37,795 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:29:37,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 15:29:37,796 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 15:29:37,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:29:37,796 INFO L85 PathProgramCache]: Analyzing trace with hash 405547300, now seen corresponding path program 1 times [2022-11-23 15:29:37,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:29:37,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622264452] [2022-11-23 15:29:37,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:29:37,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:29:37,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:29:37,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:29:37,873 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:29:37,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622264452] [2022-11-23 15:29:37,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622264452] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:29:37,874 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:29:37,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 15:29:37,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056645455] [2022-11-23 15:29:37,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:29:37,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:29:37,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:29:37,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:29:37,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:29:37,876 INFO L87 Difference]: Start difference. First operand 16 states and 16 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) [2022-11-23 15:29:37,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:29:37,898 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-11-23 15:29:37,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:29:37,900 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 [2022-11-23 15:29:37,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:29:37,900 INFO L225 Difference]: With dead ends: 16 [2022-11-23 15:29:37,900 INFO L226 Difference]: Without dead ends: 15 [2022-11-23 15:29:37,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:29:37,902 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 4 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:29:37,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 7 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 15:29:37,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-11-23 15:29:37,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-11-23 15:29:37,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 12 states have (on average 1.25) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:29:37,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-11-23 15:29:37,907 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 7 [2022-11-23 15:29:37,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:29:37,907 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-11-23 15:29:37,908 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) [2022-11-23 15:29:37,908 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-11-23 15:29:37,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-23 15:29:37,908 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:29:37,909 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:29:37,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 15:29:37,909 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 15:29:37,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:29:37,910 INFO L85 PathProgramCache]: Analyzing trace with hash -312935535, now seen corresponding path program 1 times [2022-11-23 15:29:37,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:29:37,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088426995] [2022-11-23 15:29:37,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:29:37,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:29:37,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:29:37,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:29:37,986 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:29:37,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088426995] [2022-11-23 15:29:37,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088426995] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:29:37,987 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:29:37,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 15:29:37,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990601311] [2022-11-23 15:29:37,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:29:37,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:29:37,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:29:37,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:29:37,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:29:37,989 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:29:38,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:29:38,008 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2022-11-23 15:29:38,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:29:38,014 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-23 15:29:38,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:29:38,015 INFO L225 Difference]: With dead ends: 15 [2022-11-23 15:29:38,015 INFO L226 Difference]: Without dead ends: 14 [2022-11-23 15:29:38,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:29:38,016 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 2 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:29:38,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 6 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 15:29:38,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-23 15:29:38,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-11-23 15:29:38,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:29:38,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2022-11-23 15:29:38,021 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 8 [2022-11-23 15:29:38,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:29:38,022 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2022-11-23 15:29:38,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:29:38,022 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2022-11-23 15:29:38,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-23 15:29:38,023 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:29:38,023 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:29:38,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 15:29:38,024 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 15:29:38,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:29:38,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1711517210, now seen corresponding path program 1 times [2022-11-23 15:29:38,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:29:38,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663191921] [2022-11-23 15:29:38,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:29:38,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:29:38,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:29:38,072 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:29:38,072 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:29:38,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663191921] [2022-11-23 15:29:38,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663191921] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:29:38,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084370644] [2022-11-23 15:29:38,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:29:38,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:29:38,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1145228-e5e3-4d68-a511-791bd24283fb/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:29:38,077 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1145228-e5e3-4d68-a511-791bd24283fb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:29:38,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1145228-e5e3-4d68-a511-791bd24283fb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 15:29:38,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:29:38,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 15:29:38,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:29:38,179 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:29:38,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:29:38,220 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:29:38,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2084370644] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:29:38,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1405088588] [2022-11-23 15:29:38,242 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-23 15:29:38,242 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:29:38,246 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:29:38,251 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:29:38,251 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:29:38,516 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:29:38,639 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '314#(and (<= |ULTIMATE.start_main_~z~0#1| 2147483647) (< 0 |ULTIMATE.start_main_~z~0#1|) (< 2147483646 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 0))' at error location [2022-11-23 15:29:38,640 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:29:38,640 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:29:38,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2022-11-23 15:29:38,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589941601] [2022-11-23 15:29:38,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:29:38,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 15:29:38,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:29:38,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 15:29:38,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-11-23 15:29:38,645 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:29:38,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:29:38,693 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2022-11-23 15:29:38,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 15:29:38,694 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-23 15:29:38,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:29:38,696 INFO L225 Difference]: With dead ends: 37 [2022-11-23 15:29:38,696 INFO L226 Difference]: Without dead ends: 36 [2022-11-23 15:29:38,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-11-23 15:29:38,702 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 10 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:29:38,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 30 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 15:29:38,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-11-23 15:29:38,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2022-11-23 15:29:38,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 32 states have (on average 1.125) internal successors, (36), 33 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:29:38,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2022-11-23 15:29:38,719 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 11 [2022-11-23 15:29:38,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:29:38,719 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2022-11-23 15:29:38,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:29:38,720 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2022-11-23 15:29:38,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-23 15:29:38,720 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:29:38,720 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-23 15:29:38,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1145228-e5e3-4d68-a511-791bd24283fb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 15:29:38,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1145228-e5e3-4d68-a511-791bd24283fb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-23 15:29:38,927 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 15:29:38,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:29:38,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1517426005, now seen corresponding path program 1 times [2022-11-23 15:29:38,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:29:38,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266277099] [2022-11-23 15:29:38,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:29:38,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:29:38,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:29:38,993 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:29:38,996 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:29:38,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266277099] [2022-11-23 15:29:38,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266277099] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:29:38,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302895] [2022-11-23 15:29:38,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:29:38,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:29:39,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1145228-e5e3-4d68-a511-791bd24283fb/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:29:39,003 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1145228-e5e3-4d68-a511-791bd24283fb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:29:39,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1145228-e5e3-4d68-a511-791bd24283fb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 15:29:39,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:29:39,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 15:29:39,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:29:39,080 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:29:39,080 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:29:39,116 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:29:39,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1302895] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:29:39,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [940797036] [2022-11-23 15:29:39,123 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-23 15:29:39,123 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:29:39,124 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:29:39,124 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:29:39,124 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:29:39,245 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:29:39,334 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '473#(and (<= |ULTIMATE.start_main_~z~0#1| 2147483647) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (< 0 |ULTIMATE.start_main_~z~0#1|) (< (+ 2147483647 |ULTIMATE.start_main_~y~0#1|) 0) (<= 13 |ULTIMATE.start_main_~x~0#1|))' at error location [2022-11-23 15:29:39,334 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:29:39,334 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:29:39,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2022-11-23 15:29:39,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038154240] [2022-11-23 15:29:39,335 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:29:39,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 15:29:39,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:29:39,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 15:29:39,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-11-23 15:29:39,337 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:29:39,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:29:39,373 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2022-11-23 15:29:39,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 15:29:39,374 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 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 [2022-11-23 15:29:39,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:29:39,375 INFO L225 Difference]: With dead ends: 36 [2022-11-23 15:29:39,375 INFO L226 Difference]: Without dead ends: 35 [2022-11-23 15:29:39,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-11-23 15:29:39,378 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 8 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:29:39,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 29 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 15:29:39,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-11-23 15:29:39,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-11-23 15:29:39,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 33 states have (on average 1.0606060606060606) internal successors, (35), 34 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:29:39,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2022-11-23 15:29:39,383 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 12 [2022-11-23 15:29:39,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:29:39,384 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2022-11-23 15:29:39,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:29:39,384 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2022-11-23 15:29:39,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-23 15:29:39,388 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:29:39,389 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 1, 1] [2022-11-23 15:29:39,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1145228-e5e3-4d68-a511-791bd24283fb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 15:29:39,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1145228-e5e3-4d68-a511-791bd24283fb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-23 15:29:39,595 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 15:29:39,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:29:39,595 INFO L85 PathProgramCache]: Analyzing trace with hash -722565875, now seen corresponding path program 2 times [2022-11-23 15:29:39,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:29:39,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761828231] [2022-11-23 15:29:39,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:29:39,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:29:39,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:29:39,725 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:29:39,725 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:29:39,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761828231] [2022-11-23 15:29:39,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761828231] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:29:39,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543917087] [2022-11-23 15:29:39,726 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 15:29:39,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:29:39,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1145228-e5e3-4d68-a511-791bd24283fb/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:29:39,728 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1145228-e5e3-4d68-a511-791bd24283fb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:29:39,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1145228-e5e3-4d68-a511-791bd24283fb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 15:29:39,790 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-23 15:29:39,790 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:29:39,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 15:29:39,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:29:39,857 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:29:39,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:29:39,968 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:29:39,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543917087] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:29:39,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [433263696] [2022-11-23 15:29:39,971 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-23 15:29:39,971 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:29:39,971 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:29:39,971 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:29:39,972 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:29:40,042 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:29:40,179 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '758#(and (<= |ULTIMATE.start_main_~z~0#1| 2147483647) (< 0 |ULTIMATE.start_main_~z~0#1|) (< 2147483646 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 0))' at error location [2022-11-23 15:29:40,179 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:29:40,180 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:29:40,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-23 15:29:40,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619528963] [2022-11-23 15:29:40,180 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:29:40,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-23 15:29:40,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:29:40,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-23 15:29:40,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2022-11-23 15:29:40,182 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand has 12 states, 11 states have (on average 5.818181818181818) internal successors, (64), 11 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:29:40,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:29:40,275 INFO L93 Difference]: Finished difference Result 82 states and 87 transitions. [2022-11-23 15:29:40,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 15:29:40,276 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.818181818181818) internal successors, (64), 11 states have internal predecessors, (64), 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 32 [2022-11-23 15:29:40,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:29:40,277 INFO L225 Difference]: With dead ends: 82 [2022-11-23 15:29:40,277 INFO L226 Difference]: Without dead ends: 81 [2022-11-23 15:29:40,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2022-11-23 15:29:40,278 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 27 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:29:40,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 64 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:29:40,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-11-23 15:29:40,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 76. [2022-11-23 15:29:40,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 74 states have (on average 1.0945945945945945) internal successors, (81), 75 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:29:40,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 81 transitions. [2022-11-23 15:29:40,291 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 81 transitions. Word has length 32 [2022-11-23 15:29:40,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:29:40,292 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 81 transitions. [2022-11-23 15:29:40,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.818181818181818) internal successors, (64), 11 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:29:40,292 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 81 transitions. [2022-11-23 15:29:40,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-23 15:29:40,295 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:29:40,296 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 1, 1] [2022-11-23 15:29:40,307 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1145228-e5e3-4d68-a511-791bd24283fb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-23 15:29:40,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1145228-e5e3-4d68-a511-791bd24283fb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:29:40,502 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 15:29:40,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:29:40,503 INFO L85 PathProgramCache]: Analyzing trace with hash -924705598, now seen corresponding path program 2 times [2022-11-23 15:29:40,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:29:40,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511890053] [2022-11-23 15:29:40,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:29:40,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:29:40,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:29:40,620 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:29:40,620 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:29:40,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511890053] [2022-11-23 15:29:40,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511890053] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:29:40,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46565827] [2022-11-23 15:29:40,620 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 15:29:40,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:29:40,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1145228-e5e3-4d68-a511-791bd24283fb/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:29:40,622 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1145228-e5e3-4d68-a511-791bd24283fb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:29:40,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1145228-e5e3-4d68-a511-791bd24283fb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 15:29:40,670 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-23 15:29:40,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:29:40,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 15:29:40,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:29:40,747 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:29:40,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:29:40,877 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:29:40,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [46565827] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:29:40,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1229580801] [2022-11-23 15:29:40,881 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-23 15:29:40,881 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:29:40,881 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:29:40,882 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:29:40,882 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:29:40,960 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:29:41,075 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1148#(and (<= |ULTIMATE.start_main_~z~0#1| 2147483647) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (< 0 |ULTIMATE.start_main_~z~0#1|) (< (+ 2147483647 |ULTIMATE.start_main_~y~0#1|) 0) (<= 13 |ULTIMATE.start_main_~x~0#1|))' at error location [2022-11-23 15:29:41,075 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:29:41,075 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:29:41,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-23 15:29:41,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659970158] [2022-11-23 15:29:41,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:29:41,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-23 15:29:41,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:29:41,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-23 15:29:41,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2022-11-23 15:29:41,077 INFO L87 Difference]: Start difference. First operand 76 states and 81 transitions. Second operand has 12 states, 11 states have (on average 6.0) internal successors, (66), 11 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:29:41,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:29:41,132 INFO L93 Difference]: Finished difference Result 78 states and 83 transitions. [2022-11-23 15:29:41,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 15:29:41,133 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.0) internal successors, (66), 11 states have internal predecessors, (66), 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 33 [2022-11-23 15:29:41,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:29:41,137 INFO L225 Difference]: With dead ends: 78 [2022-11-23 15:29:41,137 INFO L226 Difference]: Without dead ends: 77 [2022-11-23 15:29:41,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2022-11-23 15:29:41,138 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 20 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:29:41,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 59 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 15:29:41,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-11-23 15:29:41,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2022-11-23 15:29:41,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 75 states have (on average 1.0266666666666666) internal successors, (77), 76 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:29:41,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2022-11-23 15:29:41,160 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 33 [2022-11-23 15:29:41,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:29:41,161 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2022-11-23 15:29:41,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.0) internal successors, (66), 11 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:29:41,161 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2022-11-23 15:29:41,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-23 15:29:41,165 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:29:41,165 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 1, 1] [2022-11-23 15:29:41,179 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1145228-e5e3-4d68-a511-791bd24283fb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-23 15:29:41,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1145228-e5e3-4d68-a511-791bd24283fb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-23 15:29:41,371 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 15:29:41,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:29:41,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1320088787, now seen corresponding path program 3 times [2022-11-23 15:29:41,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:29:41,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329077729] [2022-11-23 15:29:41,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:29:41,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:29:41,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:29:41,752 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:29:41,752 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:29:41,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329077729] [2022-11-23 15:29:41,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329077729] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:29:41,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451740991] [2022-11-23 15:29:41,753 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 15:29:41,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:29:41,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1145228-e5e3-4d68-a511-791bd24283fb/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:29:41,755 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1145228-e5e3-4d68-a511-791bd24283fb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:29:41,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1145228-e5e3-4d68-a511-791bd24283fb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 15:29:41,838 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 15:29:41,839 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:29:41,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-23 15:29:41,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:29:41,967 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:29:41,967 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:29:42,363 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:29:42,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [451740991] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:29:42,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [233146150] [2022-11-23 15:29:42,365 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-23 15:29:42,365 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:29:42,365 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:29:42,366 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:29:42,366 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:29:42,428 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:29:42,551 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1793#(and (<= |ULTIMATE.start_main_~z~0#1| 2147483647) (< 0 |ULTIMATE.start_main_~z~0#1|) (< 2147483646 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 0))' at error location [2022-11-23 15:29:42,551 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:29:42,551 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:29:42,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-11-23 15:29:42,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951767014] [2022-11-23 15:29:42,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:29:42,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-23 15:29:42,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:29:42,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-23 15:29:42,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=299, Invalid=571, Unknown=0, NotChecked=0, Total=870 [2022-11-23 15:29:42,553 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand has 24 states, 23 states have (on average 6.434782608695652) internal successors, (148), 23 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:29:42,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:29:42,658 INFO L93 Difference]: Finished difference Result 172 states and 183 transitions. [2022-11-23 15:29:42,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-23 15:29:42,658 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 6.434782608695652) internal successors, (148), 23 states have internal predecessors, (148), 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 74 [2022-11-23 15:29:42,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:29:42,659 INFO L225 Difference]: With dead ends: 172 [2022-11-23 15:29:42,660 INFO L226 Difference]: Without dead ends: 171 [2022-11-23 15:29:42,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=299, Invalid=571, Unknown=0, NotChecked=0, Total=870 [2022-11-23 15:29:42,661 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 66 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:29:42,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 132 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:29:42,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2022-11-23 15:29:42,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 160. [2022-11-23 15:29:42,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 158 states have (on average 1.0822784810126582) internal successors, (171), 159 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:29:42,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 171 transitions. [2022-11-23 15:29:42,671 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 171 transitions. Word has length 74 [2022-11-23 15:29:42,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:29:42,671 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 171 transitions. [2022-11-23 15:29:42,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 6.434782608695652) internal successors, (148), 23 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:29:42,672 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 171 transitions. [2022-11-23 15:29:42,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-23 15:29:42,673 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:29:42,673 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 1, 1] [2022-11-23 15:29:42,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1145228-e5e3-4d68-a511-791bd24283fb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-23 15:29:42,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1145228-e5e3-4d68-a511-791bd24283fb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:29:42,879 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 15:29:42,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:29:42,880 INFO L85 PathProgramCache]: Analyzing trace with hash 2026920610, now seen corresponding path program 3 times [2022-11-23 15:29:42,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:29:42,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258941545] [2022-11-23 15:29:42,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:29:42,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:29:42,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:29:43,116 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 0 proven. 355 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:29:43,117 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:29:43,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258941545] [2022-11-23 15:29:43,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258941545] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:29:43,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849098679] [2022-11-23 15:29:43,117 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 15:29:43,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:29:43,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1145228-e5e3-4d68-a511-791bd24283fb/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:29:43,118 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1145228-e5e3-4d68-a511-791bd24283fb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:29:43,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1145228-e5e3-4d68-a511-791bd24283fb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-23 15:29:43,186 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 15:29:43,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:29:43,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-23 15:29:43,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:29:43,313 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 0 proven. 355 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:29:43,313 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:29:43,704 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 0 proven. 355 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:29:43,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849098679] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:29:43,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1753463666] [2022-11-23 15:29:43,707 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-23 15:29:43,707 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:29:43,708 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:29:43,708 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:29:43,708 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:29:43,785 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:29:43,928 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2645#(and (<= |ULTIMATE.start_main_~z~0#1| 2147483647) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (< 0 |ULTIMATE.start_main_~z~0#1|) (< (+ 2147483647 |ULTIMATE.start_main_~y~0#1|) 0) (<= 13 |ULTIMATE.start_main_~x~0#1|))' at error location [2022-11-23 15:29:43,928 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:29:43,928 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:29:43,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-11-23 15:29:43,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838849385] [2022-11-23 15:29:43,930 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:29:43,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-23 15:29:43,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:29:43,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-23 15:29:43,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=301, Invalid=569, Unknown=0, NotChecked=0, Total=870 [2022-11-23 15:29:43,932 INFO L87 Difference]: Start difference. First operand 160 states and 171 transitions. Second operand has 24 states, 23 states have (on average 6.521739130434782) internal successors, (150), 23 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:29:44,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:29:44,040 INFO L93 Difference]: Finished difference Result 162 states and 173 transitions. [2022-11-23 15:29:44,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-23 15:29:44,041 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 6.521739130434782) internal successors, (150), 23 states have internal predecessors, (150), 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 75 [2022-11-23 15:29:44,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:29:44,043 INFO L225 Difference]: With dead ends: 162 [2022-11-23 15:29:44,043 INFO L226 Difference]: Without dead ends: 161 [2022-11-23 15:29:44,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=301, Invalid=569, Unknown=0, NotChecked=0, Total=870 [2022-11-23 15:29:44,045 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 44 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:29:44,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 121 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:29:44,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2022-11-23 15:29:44,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2022-11-23 15:29:44,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 159 states have (on average 1.0125786163522013) internal successors, (161), 160 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:29:44,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 161 transitions. [2022-11-23 15:29:44,057 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 161 transitions. Word has length 75 [2022-11-23 15:29:44,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:29:44,057 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 161 transitions. [2022-11-23 15:29:44,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 6.521739130434782) internal successors, (150), 23 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:29:44,058 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 161 transitions. [2022-11-23 15:29:44,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-11-23 15:29:44,060 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:29:44,060 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 22, 22, 22, 22, 22, 1, 1] [2022-11-23 15:29:44,075 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1145228-e5e3-4d68-a511-791bd24283fb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-23 15:29:44,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1145228-e5e3-4d68-a511-791bd24283fb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:29:44,267 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 15:29:44,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:29:44,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1637556077, now seen corresponding path program 4 times [2022-11-23 15:29:44,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:29:44,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914095846] [2022-11-23 15:29:44,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:29:44,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:29:44,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:29:45,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1683 backedges. 0 proven. 1683 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:29:45,228 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:29:45,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914095846] [2022-11-23 15:29:45,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914095846] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:29:45,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691416687] [2022-11-23 15:29:45,229 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-23 15:29:45,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:29:45,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1145228-e5e3-4d68-a511-791bd24283fb/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:29:45,231 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1145228-e5e3-4d68-a511-791bd24283fb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:29:45,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1145228-e5e3-4d68-a511-791bd24283fb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-23 15:29:45,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:29:45,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-23 15:29:45,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:29:45,637 INFO L134 CoverageAnalysis]: Checked inductivity of 1683 backedges. 0 proven. 1683 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:29:45,637 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:29:46,777 INFO L134 CoverageAnalysis]: Checked inductivity of 1683 backedges. 0 proven. 1683 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:29:46,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691416687] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:29:46,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [597886001] [2022-11-23 15:29:46,780 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-23 15:29:46,780 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:29:46,780 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:29:46,780 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:29:46,781 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:29:46,851 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:29:47,051 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4010#(and (<= |ULTIMATE.start_main_~z~0#1| 2147483647) (< 0 |ULTIMATE.start_main_~z~0#1|) (< 2147483646 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 0))' at error location [2022-11-23 15:29:47,051 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:29:47,051 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:29:47,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 46 [2022-11-23 15:29:47,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781427577] [2022-11-23 15:29:47,053 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:29:47,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-23 15:29:47,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:29:47,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-23 15:29:47,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1151, Invalid=1711, Unknown=0, NotChecked=0, Total=2862 [2022-11-23 15:29:47,057 INFO L87 Difference]: Start difference. First operand 161 states and 161 transitions. Second operand has 48 states, 47 states have (on average 6.723404255319149) internal successors, (316), 47 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:29:47,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:29:47,312 INFO L93 Difference]: Finished difference Result 352 states and 375 transitions. [2022-11-23 15:29:47,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-23 15:29:47,313 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 6.723404255319149) internal successors, (316), 47 states have internal predecessors, (316), 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 158 [2022-11-23 15:29:47,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:29:47,315 INFO L225 Difference]: With dead ends: 352 [2022-11-23 15:29:47,316 INFO L226 Difference]: Without dead ends: 351 [2022-11-23 15:29:47,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 495 GetRequests, 443 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1151, Invalid=1711, Unknown=0, NotChecked=0, Total=2862 [2022-11-23 15:29:47,319 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 147 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 15:29:47,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 261 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 15:29:47,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2022-11-23 15:29:47,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 328. [2022-11-23 15:29:47,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 326 states have (on average 1.0766871165644172) internal successors, (351), 327 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:29:47,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 351 transitions. [2022-11-23 15:29:47,341 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 351 transitions. Word has length 158 [2022-11-23 15:29:47,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:29:47,343 INFO L495 AbstractCegarLoop]: Abstraction has 328 states and 351 transitions. [2022-11-23 15:29:47,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 6.723404255319149) internal successors, (316), 47 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:29:47,344 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 351 transitions. [2022-11-23 15:29:47,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-11-23 15:29:47,351 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:29:47,351 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 22, 22, 22, 22, 1, 1] [2022-11-23 15:29:47,363 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1145228-e5e3-4d68-a511-791bd24283fb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-23 15:29:47,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1145228-e5e3-4d68-a511-791bd24283fb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-23 15:29:47,559 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 15:29:47,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:29:47,559 INFO L85 PathProgramCache]: Analyzing trace with hash -775369118, now seen corresponding path program 4 times [2022-11-23 15:29:47,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:29:47,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391599752] [2022-11-23 15:29:47,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:29:47,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:29:47,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:29:48,335 INFO L134 CoverageAnalysis]: Checked inductivity of 1705 backedges. 0 proven. 1705 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:29:48,335 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:29:48,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391599752] [2022-11-23 15:29:48,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391599752] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:29:48,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915675497] [2022-11-23 15:29:48,336 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-23 15:29:48,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:29:48,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1145228-e5e3-4d68-a511-791bd24283fb/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:29:48,337 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1145228-e5e3-4d68-a511-791bd24283fb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:29:48,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1145228-e5e3-4d68-a511-791bd24283fb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-23 15:29:48,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:29:48,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-23 15:29:48,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:29:48,719 INFO L134 CoverageAnalysis]: Checked inductivity of 1705 backedges. 0 proven. 1705 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:29:48,720 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:29:49,827 INFO L134 CoverageAnalysis]: Checked inductivity of 1705 backedges. 0 proven. 1705 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:29:49,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [915675497] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:29:49,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [847169328] [2022-11-23 15:29:49,829 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-23 15:29:49,829 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:29:49,829 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:29:49,830 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:29:49,830 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:29:49,880 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:29:50,075 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5786#(and (<= |ULTIMATE.start_main_~z~0#1| 2147483647) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (< 0 |ULTIMATE.start_main_~z~0#1|) (< (+ 2147483647 |ULTIMATE.start_main_~y~0#1|) 0) (<= 13 |ULTIMATE.start_main_~x~0#1|))' at error location [2022-11-23 15:29:50,075 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:29:50,075 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:29:50,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 46 [2022-11-23 15:29:50,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423510193] [2022-11-23 15:29:50,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:29:50,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-23 15:29:50,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:29:50,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-23 15:29:50,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1153, Invalid=1709, Unknown=0, NotChecked=0, Total=2862 [2022-11-23 15:29:50,080 INFO L87 Difference]: Start difference. First operand 328 states and 351 transitions. Second operand has 48 states, 47 states have (on average 6.76595744680851) internal successors, (318), 47 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:29:50,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:29:50,288 INFO L93 Difference]: Finished difference Result 330 states and 353 transitions. [2022-11-23 15:29:50,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-23 15:29:50,289 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 6.76595744680851) internal successors, (318), 47 states have internal predecessors, (318), 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 159 [2022-11-23 15:29:50,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:29:50,291 INFO L225 Difference]: With dead ends: 330 [2022-11-23 15:29:50,291 INFO L226 Difference]: Without dead ends: 329 [2022-11-23 15:29:50,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 498 GetRequests, 446 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1153, Invalid=1709, Unknown=0, NotChecked=0, Total=2862 [2022-11-23 15:29:50,293 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 92 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:29:50,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 243 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:29:50,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2022-11-23 15:29:50,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 329. [2022-11-23 15:29:50,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 327 states have (on average 1.0061162079510704) internal successors, (329), 328 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:29:50,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 329 transitions. [2022-11-23 15:29:50,307 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 329 transitions. Word has length 159 [2022-11-23 15:29:50,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:29:50,307 INFO L495 AbstractCegarLoop]: Abstraction has 329 states and 329 transitions. [2022-11-23 15:29:50,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 6.76595744680851) internal successors, (318), 47 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:29:50,308 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 329 transitions. [2022-11-23 15:29:50,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2022-11-23 15:29:50,318 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:29:50,318 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 46, 46, 46, 46, 46, 1, 1] [2022-11-23 15:29:50,329 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1145228-e5e3-4d68-a511-791bd24283fb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-23 15:29:50,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1145228-e5e3-4d68-a511-791bd24283fb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-23 15:29:50,525 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 15:29:50,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:29:50,525 INFO L85 PathProgramCache]: Analyzing trace with hash 79390701, now seen corresponding path program 5 times [2022-11-23 15:29:50,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:29:50,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831923625] [2022-11-23 15:29:50,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:29:50,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:29:50,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:29:53,443 INFO L134 CoverageAnalysis]: Checked inductivity of 7383 backedges. 0 proven. 7383 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:29:53,443 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:29:53,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831923625] [2022-11-23 15:29:53,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831923625] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:29:53,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760353834] [2022-11-23 15:29:53,444 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 15:29:53,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:29:53,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1145228-e5e3-4d68-a511-791bd24283fb/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:29:53,446 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1145228-e5e3-4d68-a511-791bd24283fb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:29:53,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1145228-e5e3-4d68-a511-791bd24283fb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-23 15:29:53,658 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2022-11-23 15:29:53,658 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:29:53,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 609 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-23 15:29:53,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:29:54,288 INFO L134 CoverageAnalysis]: Checked inductivity of 7383 backedges. 0 proven. 7383 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:29:54,288 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:29:57,898 INFO L134 CoverageAnalysis]: Checked inductivity of 7383 backedges. 0 proven. 7383 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:29:57,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1760353834] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:29:57,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1504898338] [2022-11-23 15:29:57,900 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-23 15:29:57,901 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:29:57,901 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:29:57,901 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:29:57,901 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:29:57,970 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:29:58,220 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8591#(and (<= |ULTIMATE.start_main_~z~0#1| 2147483647) (< 0 |ULTIMATE.start_main_~z~0#1|) (< 2147483646 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 0))' at error location [2022-11-23 15:29:58,221 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:29:58,221 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:29:58,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 94 [2022-11-23 15:29:58,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912428463] [2022-11-23 15:29:58,222 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:29:58,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-11-23 15:29:58,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:29:58,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-11-23 15:29:58,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4583, Invalid=5719, Unknown=0, NotChecked=0, Total=10302 [2022-11-23 15:29:58,236 INFO L87 Difference]: Start difference. First operand 329 states and 329 transitions. Second operand has 96 states, 95 states have (on average 6.863157894736842) internal successors, (652), 95 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:29:58,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:29:58,838 INFO L93 Difference]: Finished difference Result 712 states and 759 transitions. [2022-11-23 15:29:58,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-11-23 15:29:58,839 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 6.863157894736842) internal successors, (652), 95 states have internal predecessors, (652), 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 326 [2022-11-23 15:29:58,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:29:58,841 INFO L225 Difference]: With dead ends: 712 [2022-11-23 15:29:58,842 INFO L226 Difference]: Without dead ends: 711 [2022-11-23 15:29:58,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1023 GetRequests, 923 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 840 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=4583, Invalid=5719, Unknown=0, NotChecked=0, Total=10302 [2022-11-23 15:29:58,847 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 341 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 15:29:58,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [341 Valid, 529 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 15:29:58,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2022-11-23 15:29:58,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 664. [2022-11-23 15:29:58,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 662 states have (on average 1.0740181268882176) internal successors, (711), 663 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:29:58,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 711 transitions. [2022-11-23 15:29:58,870 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 711 transitions. Word has length 326 [2022-11-23 15:29:58,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:29:58,870 INFO L495 AbstractCegarLoop]: Abstraction has 664 states and 711 transitions. [2022-11-23 15:29:58,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 6.863157894736842) internal successors, (652), 95 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:29:58,871 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 711 transitions. [2022-11-23 15:29:58,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2022-11-23 15:29:58,876 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:29:58,877 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 47, 46, 46, 46, 46, 1, 1] [2022-11-23 15:29:58,889 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1145228-e5e3-4d68-a511-791bd24283fb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-11-23 15:29:59,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1145228-e5e3-4d68-a511-791bd24283fb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-23 15:29:59,084 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 15:29:59,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:29:59,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1833855518, now seen corresponding path program 5 times [2022-11-23 15:29:59,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:29:59,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294444360] [2022-11-23 15:29:59,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:29:59,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:29:59,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:30:01,813 INFO L134 CoverageAnalysis]: Checked inductivity of 7429 backedges. 0 proven. 7429 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:30:01,813 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:30:01,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294444360] [2022-11-23 15:30:01,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294444360] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:30:01,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784285849] [2022-11-23 15:30:01,814 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 15:30:01,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:30:01,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1145228-e5e3-4d68-a511-791bd24283fb/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:30:01,815 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1145228-e5e3-4d68-a511-791bd24283fb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:30:01,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1145228-e5e3-4d68-a511-791bd24283fb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-23 15:30:02,020 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2022-11-23 15:30:02,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:30:02,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-23 15:30:02,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:30:02,646 INFO L134 CoverageAnalysis]: Checked inductivity of 7429 backedges. 0 proven. 7429 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:30:02,646 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:30:06,409 INFO L134 CoverageAnalysis]: Checked inductivity of 7429 backedges. 0 proven. 7429 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:30:06,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [784285849] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:30:06,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1233558470] [2022-11-23 15:30:06,412 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-23 15:30:06,412 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:30:06,414 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:30:06,414 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:30:06,414 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:30:06,467 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:30:06,751 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '12215#(and (<= |ULTIMATE.start_main_~z~0#1| 2147483647) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (< 0 |ULTIMATE.start_main_~z~0#1|) (< (+ 2147483647 |ULTIMATE.start_main_~y~0#1|) 0) (<= 13 |ULTIMATE.start_main_~x~0#1|))' at error location [2022-11-23 15:30:06,751 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:30:06,751 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:30:06,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 94 [2022-11-23 15:30:06,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360687656] [2022-11-23 15:30:06,752 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:30:06,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-11-23 15:30:06,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:30:06,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-11-23 15:30:06,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4585, Invalid=5717, Unknown=0, NotChecked=0, Total=10302 [2022-11-23 15:30:06,761 INFO L87 Difference]: Start difference. First operand 664 states and 711 transitions. Second operand has 96 states, 95 states have (on average 6.88421052631579) internal successors, (654), 95 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:30:07,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:30:07,361 INFO L93 Difference]: Finished difference Result 666 states and 713 transitions. [2022-11-23 15:30:07,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-11-23 15:30:07,362 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 6.88421052631579) internal successors, (654), 95 states have internal predecessors, (654), 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 327 [2022-11-23 15:30:07,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:30:07,365 INFO L225 Difference]: With dead ends: 666 [2022-11-23 15:30:07,366 INFO L226 Difference]: Without dead ends: 665 [2022-11-23 15:30:07,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1026 GetRequests, 926 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 840 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=4585, Invalid=5717, Unknown=0, NotChecked=0, Total=10302 [2022-11-23 15:30:07,369 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 235 mSDsluCounter, 473 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 15:30:07,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 480 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 15:30:07,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2022-11-23 15:30:07,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 665. [2022-11-23 15:30:07,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 665 states, 663 states have (on average 1.0030165912518854) internal successors, (665), 664 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:30:07,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 665 transitions. [2022-11-23 15:30:07,394 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 665 transitions. Word has length 327 [2022-11-23 15:30:07,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:30:07,395 INFO L495 AbstractCegarLoop]: Abstraction has 665 states and 665 transitions. [2022-11-23 15:30:07,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 6.88421052631579) internal successors, (654), 95 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:30:07,396 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 665 transitions. [2022-11-23 15:30:07,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 663 [2022-11-23 15:30:07,415 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:30:07,415 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 94, 94, 94, 94, 94, 1, 1] [2022-11-23 15:30:07,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1145228-e5e3-4d68-a511-791bd24283fb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-23 15:30:07,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1145228-e5e3-4d68-a511-791bd24283fb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:30:07,622 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 15:30:07,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:30:07,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1528006419, now seen corresponding path program 6 times [2022-11-23 15:30:07,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:30:07,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294853598] [2022-11-23 15:30:07,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:30:07,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:30:07,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:30:17,673 INFO L134 CoverageAnalysis]: Checked inductivity of 30879 backedges. 0 proven. 30879 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:30:17,673 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:30:17,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294853598] [2022-11-23 15:30:17,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294853598] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:30:17,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489184487] [2022-11-23 15:30:17,674 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 15:30:17,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:30:17,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1145228-e5e3-4d68-a511-791bd24283fb/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:30:17,679 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1145228-e5e3-4d68-a511-791bd24283fb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:30:17,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1145228-e5e3-4d68-a511-791bd24283fb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-23 15:30:17,919 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 15:30:17,919 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:30:17,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 1233 conjuncts, 96 conjunts are in the unsatisfiable core [2022-11-23 15:30:17,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:30:18,940 INFO L134 CoverageAnalysis]: Checked inductivity of 30879 backedges. 0 proven. 30879 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:30:18,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:30:30,550 INFO L134 CoverageAnalysis]: Checked inductivity of 30879 backedges. 0 proven. 30879 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:30:30,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1489184487] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:30:30,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [560513089] [2022-11-23 15:30:30,553 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-23 15:30:30,553 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:30:30,553 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:30:30,553 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:30:30,554 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:30:30,603 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:30:30,980 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '17900#(and (<= |ULTIMATE.start_main_~z~0#1| 2147483647) (< 0 |ULTIMATE.start_main_~z~0#1|) (< 2147483646 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 0))' at error location [2022-11-23 15:30:30,980 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:30:30,980 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:30:30,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95, 95] total 190 [2022-11-23 15:30:30,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689289698] [2022-11-23 15:30:30,981 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:30:30,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2022-11-23 15:30:30,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:30:30,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2022-11-23 15:30:30,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18359, Invalid=20647, Unknown=0, NotChecked=0, Total=39006 [2022-11-23 15:30:30,995 INFO L87 Difference]: Start difference. First operand 665 states and 665 transitions. Second operand has 192 states, 191 states have (on average 6.9319371727748695) internal successors, (1324), 191 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:30:32,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:30:32,919 INFO L93 Difference]: Finished difference Result 1432 states and 1527 transitions. [2022-11-23 15:30:32,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2022-11-23 15:30:32,920 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 191 states have (on average 6.9319371727748695) internal successors, (1324), 191 states have internal predecessors, (1324), 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 662 [2022-11-23 15:30:32,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:30:32,927 INFO L225 Difference]: With dead ends: 1432 [2022-11-23 15:30:32,927 INFO L226 Difference]: Without dead ends: 1431 [2022-11-23 15:30:32,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2079 GetRequests, 1883 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1704 ImplicationChecksByTransitivity, 14.8s TimeCoverageRelationStatistics Valid=18359, Invalid=20647, Unknown=0, NotChecked=0, Total=39006 [2022-11-23 15:30:32,932 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 822 mSDsluCounter, 1050 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 822 SdHoareTripleChecker+Valid, 1057 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 15:30:32,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [822 Valid, 1057 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 15:30:32,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1431 states. [2022-11-23 15:30:32,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1431 to 1336. [2022-11-23 15:30:32,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1336 states, 1334 states have (on average 1.0727136431784108) internal successors, (1431), 1335 states have internal predecessors, (1431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:30:32,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1336 states to 1336 states and 1431 transitions. [2022-11-23 15:30:32,969 INFO L78 Accepts]: Start accepts. Automaton has 1336 states and 1431 transitions. Word has length 662 [2022-11-23 15:30:32,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:30:32,970 INFO L495 AbstractCegarLoop]: Abstraction has 1336 states and 1431 transitions. [2022-11-23 15:30:32,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 191 states have (on average 6.9319371727748695) internal successors, (1324), 191 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:30:32,971 INFO L276 IsEmpty]: Start isEmpty. Operand 1336 states and 1431 transitions. [2022-11-23 15:30:32,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 664 [2022-11-23 15:30:32,990 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:30:32,990 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 95, 94, 94, 94, 94, 1, 1] [2022-11-23 15:30:32,997 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1145228-e5e3-4d68-a511-791bd24283fb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-23 15:30:33,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1145228-e5e3-4d68-a511-791bd24283fb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-23 15:30:33,197 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 15:30:33,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:30:33,197 INFO L85 PathProgramCache]: Analyzing trace with hash -123558686, now seen corresponding path program 6 times [2022-11-23 15:30:33,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:30:33,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959979264] [2022-11-23 15:30:33,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:30:33,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:30:33,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:30:41,358 INFO L134 CoverageAnalysis]: Checked inductivity of 30973 backedges. 0 proven. 30973 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:30:41,358 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:30:41,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959979264] [2022-11-23 15:30:41,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959979264] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:30:41,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818342247] [2022-11-23 15:30:41,358 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 15:30:41,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:30:41,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1145228-e5e3-4d68-a511-791bd24283fb/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:30:41,360 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1145228-e5e3-4d68-a511-791bd24283fb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:30:41,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1145228-e5e3-4d68-a511-791bd24283fb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-23 15:30:41,576 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 15:30:41,576 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:30:41,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 1236 conjuncts, 96 conjunts are in the unsatisfiable core [2022-11-23 15:30:41,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:30:42,556 INFO L134 CoverageAnalysis]: Checked inductivity of 30973 backedges. 0 proven. 30973 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:30:42,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:30:54,595 INFO L134 CoverageAnalysis]: Checked inductivity of 30973 backedges. 0 proven. 30973 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:30:54,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [818342247] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:30:54,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [924302908] [2022-11-23 15:30:54,599 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-23 15:30:54,599 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:30:54,599 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:30:54,599 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:30:54,599 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:30:54,640 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:30:55,017 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '25220#(and (<= |ULTIMATE.start_main_~z~0#1| 2147483647) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (< 0 |ULTIMATE.start_main_~z~0#1|) (< (+ 2147483647 |ULTIMATE.start_main_~y~0#1|) 0) (<= 13 |ULTIMATE.start_main_~x~0#1|))' at error location [2022-11-23 15:30:55,017 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:30:55,017 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:30:55,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95, 95] total 190 [2022-11-23 15:30:55,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707283189] [2022-11-23 15:30:55,018 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:30:55,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2022-11-23 15:30:55,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:30:55,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2022-11-23 15:30:55,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18361, Invalid=20645, Unknown=0, NotChecked=0, Total=39006 [2022-11-23 15:30:55,029 INFO L87 Difference]: Start difference. First operand 1336 states and 1431 transitions. Second operand has 192 states, 191 states have (on average 6.942408376963351) internal successors, (1326), 191 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:30:56,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:30:56,899 INFO L93 Difference]: Finished difference Result 1338 states and 1433 transitions. [2022-11-23 15:30:56,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2022-11-23 15:30:56,901 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 191 states have (on average 6.942408376963351) internal successors, (1326), 191 states have internal predecessors, (1326), 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 663 [2022-11-23 15:30:56,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:30:56,905 INFO L225 Difference]: With dead ends: 1338 [2022-11-23 15:30:56,906 INFO L226 Difference]: Without dead ends: 1337 [2022-11-23 15:30:56,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2082 GetRequests, 1886 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1704 ImplicationChecksByTransitivity, 15.2s TimeCoverageRelationStatistics Valid=18361, Invalid=20645, Unknown=0, NotChecked=0, Total=39006 [2022-11-23 15:30:56,909 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 380 mSDsluCounter, 958 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 965 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 15:30:56,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 965 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 15:30:56,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1337 states. [2022-11-23 15:30:56,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1337 to 1337. [2022-11-23 15:30:56,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1337 states, 1335 states have (on average 1.0014981273408239) internal successors, (1337), 1336 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:30:56,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1337 states to 1337 states and 1337 transitions. [2022-11-23 15:30:56,949 INFO L78 Accepts]: Start accepts. Automaton has 1337 states and 1337 transitions. Word has length 663 [2022-11-23 15:30:56,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:30:56,950 INFO L495 AbstractCegarLoop]: Abstraction has 1337 states and 1337 transitions. [2022-11-23 15:30:56,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 191 states have (on average 6.942408376963351) internal successors, (1326), 191 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:30:56,951 INFO L276 IsEmpty]: Start isEmpty. Operand 1337 states and 1337 transitions. [2022-11-23 15:30:56,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1335 [2022-11-23 15:30:56,965 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:30:56,966 INFO L195 NwaCegarLoop]: trace histogram [191, 191, 190, 190, 190, 190, 190, 1, 1] [2022-11-23 15:30:56,972 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1145228-e5e3-4d68-a511-791bd24283fb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-23 15:30:57,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1145228-e5e3-4d68-a511-791bd24283fb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-23 15:30:57,172 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 15:30:57,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:30:57,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1961846035, now seen corresponding path program 7 times [2022-11-23 15:30:57,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:30:57,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297639737] [2022-11-23 15:30:57,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:30:57,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:30:57,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:31:33,409 INFO L134 CoverageAnalysis]: Checked inductivity of 126255 backedges. 0 proven. 126255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:31:33,410 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:31:33,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297639737] [2022-11-23 15:31:33,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297639737] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:31:33,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644211567] [2022-11-23 15:31:33,410 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-23 15:31:33,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:31:33,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1145228-e5e3-4d68-a511-791bd24283fb/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:31:33,416 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1145228-e5e3-4d68-a511-791bd24283fb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:31:33,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1145228-e5e3-4d68-a511-791bd24283fb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-23 15:31:33,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:31:33,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 2481 conjuncts, 192 conjunts are in the unsatisfiable core [2022-11-23 15:31:33,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:31:35,682 INFO L134 CoverageAnalysis]: Checked inductivity of 126255 backedges. 0 proven. 126255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:31:35,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:32:20,066 INFO L134 CoverageAnalysis]: Checked inductivity of 126255 backedges. 0 proven. 126255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:32:20,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1644211567] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:32:20,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [196958470] [2022-11-23 15:32:20,068 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-23 15:32:20,069 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:32:20,069 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:32:20,069 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:32:20,069 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:32:20,111 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:32:20,796 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '36665#(and (<= |ULTIMATE.start_main_~z~0#1| 2147483647) (< 0 |ULTIMATE.start_main_~z~0#1|) (< 2147483646 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 0))' at error location [2022-11-23 15:32:20,796 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:32:20,796 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:32:20,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [191, 191, 191] total 382 [2022-11-23 15:32:20,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614705440] [2022-11-23 15:32:20,797 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:32:20,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 384 states [2022-11-23 15:32:20,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:32:20,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 384 interpolants. [2022-11-23 15:32:20,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73559, Invalid=78151, Unknown=0, NotChecked=0, Total=151710 [2022-11-23 15:32:20,826 INFO L87 Difference]: Start difference. First operand 1337 states and 1337 transitions. Second operand has 384 states, 383 states have (on average 6.966057441253263) internal successors, (2668), 383 states have internal predecessors, (2668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:32:36,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:32:36,377 INFO L93 Difference]: Finished difference Result 2872 states and 3063 transitions. [2022-11-23 15:32:36,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2022-11-23 15:32:36,378 INFO L78 Accepts]: Start accepts. Automaton has has 384 states, 383 states have (on average 6.966057441253263) internal successors, (2668), 383 states have internal predecessors, (2668), 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 1334 [2022-11-23 15:32:36,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:32:36,388 INFO L225 Difference]: With dead ends: 2872 [2022-11-23 15:32:36,388 INFO L226 Difference]: Without dead ends: 2871 [2022-11-23 15:32:36,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4191 GetRequests, 3803 SyntacticMatches, 0 SemanticMatches, 388 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3432 ImplicationChecksByTransitivity, 57.5s TimeCoverageRelationStatistics Valid=73559, Invalid=78151, Unknown=0, NotChecked=0, Total=151710 [2022-11-23 15:32:36,399 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 1772 mSDsluCounter, 2105 mSDsCounter, 0 mSdLazyCounter, 771 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1772 SdHoareTripleChecker+Valid, 2112 SdHoareTripleChecker+Invalid, 967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-23 15:32:36,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1772 Valid, 2112 Invalid, 967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 771 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-23 15:32:36,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2871 states. [2022-11-23 15:32:36,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2871 to 2680. [2022-11-23 15:32:36,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2680 states, 2678 states have (on average 1.072068707991038) internal successors, (2871), 2679 states have internal predecessors, (2871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:32:36,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2680 states to 2680 states and 2871 transitions. [2022-11-23 15:32:36,467 INFO L78 Accepts]: Start accepts. Automaton has 2680 states and 2871 transitions. Word has length 1334 [2022-11-23 15:32:36,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:32:36,469 INFO L495 AbstractCegarLoop]: Abstraction has 2680 states and 2871 transitions. [2022-11-23 15:32:36,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 384 states, 383 states have (on average 6.966057441253263) internal successors, (2668), 383 states have internal predecessors, (2668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:32:36,470 INFO L276 IsEmpty]: Start isEmpty. Operand 2680 states and 2871 transitions. [2022-11-23 15:32:36,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1336 [2022-11-23 15:32:36,484 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:32:36,484 INFO L195 NwaCegarLoop]: trace histogram [191, 191, 191, 190, 190, 190, 190, 1, 1] [2022-11-23 15:32:36,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1145228-e5e3-4d68-a511-791bd24283fb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-23 15:32:36,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1145228-e5e3-4d68-a511-791bd24283fb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:32:36,693 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 15:32:36,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:32:36,693 INFO L85 PathProgramCache]: Analyzing trace with hash -687684894, now seen corresponding path program 7 times [2022-11-23 15:32:36,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:32:36,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280473763] [2022-11-23 15:32:36,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:32:36,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:32:37,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:33:13,266 INFO L134 CoverageAnalysis]: Checked inductivity of 126445 backedges. 0 proven. 126445 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:33:13,266 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:33:13,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280473763] [2022-11-23 15:33:13,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280473763] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:33:13,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1929853404] [2022-11-23 15:33:13,267 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-23 15:33:13,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:33:13,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1145228-e5e3-4d68-a511-791bd24283fb/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:33:13,268 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1145228-e5e3-4d68-a511-791bd24283fb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:33:13,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1145228-e5e3-4d68-a511-791bd24283fb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-23 15:33:13,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:33:13,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 2484 conjuncts, 192 conjunts are in the unsatisfiable core [2022-11-23 15:33:13,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:33:15,573 INFO L134 CoverageAnalysis]: Checked inductivity of 126445 backedges. 0 proven. 126445 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:33:15,573 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:34:01,561 INFO L134 CoverageAnalysis]: Checked inductivity of 126445 backedges. 0 proven. 126445 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:34:01,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1929853404] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:34:01,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2091982787] [2022-11-23 15:34:01,563 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-23 15:34:01,564 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:34:01,564 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:34:01,564 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:34:01,564 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:34:01,602 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:34:02,279 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '51377#(and (<= |ULTIMATE.start_main_~z~0#1| 2147483647) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (< 0 |ULTIMATE.start_main_~z~0#1|) (< (+ 2147483647 |ULTIMATE.start_main_~y~0#1|) 0) (<= 13 |ULTIMATE.start_main_~x~0#1|))' at error location [2022-11-23 15:34:02,279 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:34:02,279 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:34:02,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [191, 191, 191] total 382 [2022-11-23 15:34:02,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287897280] [2022-11-23 15:34:02,280 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:34:02,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 384 states [2022-11-23 15:34:02,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:34:02,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 384 interpolants. [2022-11-23 15:34:02,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73561, Invalid=78149, Unknown=0, NotChecked=0, Total=151710 [2022-11-23 15:34:02,298 INFO L87 Difference]: Start difference. First operand 2680 states and 2871 transitions. Second operand has 384 states, 383 states have (on average 6.971279373368146) internal successors, (2670), 383 states have internal predecessors, (2670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:34:12,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:34:12,712 INFO L93 Difference]: Finished difference Result 2682 states and 2873 transitions. [2022-11-23 15:34:12,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2022-11-23 15:34:12,714 INFO L78 Accepts]: Start accepts. Automaton has has 384 states, 383 states have (on average 6.971279373368146) internal successors, (2670), 383 states have internal predecessors, (2670), 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 1335 [2022-11-23 15:34:12,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:34:12,723 INFO L225 Difference]: With dead ends: 2682 [2022-11-23 15:34:12,723 INFO L226 Difference]: Without dead ends: 2681 [2022-11-23 15:34:12,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4194 GetRequests, 3806 SyntacticMatches, 0 SemanticMatches, 388 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3432 ImplicationChecksByTransitivity, 59.6s TimeCoverageRelationStatistics Valid=73561, Invalid=78149, Unknown=0, NotChecked=0, Total=151710 [2022-11-23 15:34:12,734 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 764 mSDsluCounter, 1916 mSDsCounter, 0 mSdLazyCounter, 772 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 764 SdHoareTripleChecker+Valid, 1923 SdHoareTripleChecker+Invalid, 968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:34:12,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [764 Valid, 1923 Invalid, 968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 772 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-23 15:34:12,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2681 states. [2022-11-23 15:34:12,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2681 to 2681. [2022-11-23 15:34:12,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2681 states, 2679 states have (on average 1.0007465472191117) internal successors, (2681), 2680 states have internal predecessors, (2681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:34:12,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2681 states to 2681 states and 2681 transitions. [2022-11-23 15:34:12,808 INFO L78 Accepts]: Start accepts. Automaton has 2681 states and 2681 transitions. Word has length 1335 [2022-11-23 15:34:12,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:34:12,810 INFO L495 AbstractCegarLoop]: Abstraction has 2681 states and 2681 transitions. [2022-11-23 15:34:12,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 384 states, 383 states have (on average 6.971279373368146) internal successors, (2670), 383 states have internal predecessors, (2670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:34:12,811 INFO L276 IsEmpty]: Start isEmpty. Operand 2681 states and 2681 transitions. [2022-11-23 15:34:12,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2679 [2022-11-23 15:34:12,896 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:34:12,896 INFO L195 NwaCegarLoop]: trace histogram [383, 383, 382, 382, 382, 382, 382, 1, 1] [2022-11-23 15:34:12,912 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1145228-e5e3-4d68-a511-791bd24283fb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-23 15:34:13,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1145228-e5e3-4d68-a511-791bd24283fb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:34:13,105 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-23 15:34:13,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:34:13,106 INFO L85 PathProgramCache]: Analyzing trace with hash -564076819, now seen corresponding path program 8 times [2022-11-23 15:34:13,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:34:13,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406743958] [2022-11-23 15:34:13,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:34:13,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:34:14,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:37:54,251 INFO L134 CoverageAnalysis]: Checked inductivity of 510543 backedges. 0 proven. 510543 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:37:54,251 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:37:54,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406743958] [2022-11-23 15:37:54,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406743958] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:37:54,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496154256] [2022-11-23 15:37:54,251 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 15:37:54,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:37:54,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1145228-e5e3-4d68-a511-791bd24283fb/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:37:54,254 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1145228-e5e3-4d68-a511-791bd24283fb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:37:54,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1145228-e5e3-4d68-a511-791bd24283fb/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-23 15:37:59,638 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 383 check-sat command(s) [2022-11-23 15:37:59,639 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:37:59,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 4977 conjuncts, 384 conjunts are in the unsatisfiable core [2022-11-23 15:37:59,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:38:03,599 INFO L134 CoverageAnalysis]: Checked inductivity of 510543 backedges. 0 proven. 510543 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:38:03,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:41:02,715 INFO L134 CoverageAnalysis]: Checked inductivity of 510543 backedges. 0 proven. 510543 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:41:02,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [496154256] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:41:02,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1109224300] [2022-11-23 15:41:02,718 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-23 15:41:02,718 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:41:02,719 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:41:02,719 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:41:02,719 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:41:02,768 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:41:04,067 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '74342#(and (<= |ULTIMATE.start_main_~z~0#1| 2147483647) (< 0 |ULTIMATE.start_main_~z~0#1|) (< 2147483646 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 0))' at error location [2022-11-23 15:41:04,067 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:41:04,067 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:41:04,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [383, 383, 383] total 766 [2022-11-23 15:41:04,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621325782] [2022-11-23 15:41:04,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:41:04,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 768 states [2022-11-23 15:41:04,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:41:04,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 768 interpolants. [2022-11-23 15:41:04,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=294551, Invalid=303751, Unknown=0, NotChecked=0, Total=598302 [2022-11-23 15:41:04,154 INFO L87 Difference]: Start difference. First operand 2681 states and 2681 transitions. Second operand has 768 states, 767 states have (on average 6.983050847457627) internal successors, (5356), 767 states have internal predecessors, (5356), 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)