./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig9a.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_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/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_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig9a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/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_60e16828-f20f-472b-ade7-53b0f63f79d2/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 172ac4fa0310d14c59d9149bc1b8ec1548860e0b827250d611bfd9d710019753 --- 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 15:42:22,283 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:42:22,285 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:42:22,309 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:42:22,310 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:42:22,311 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:42:22,320 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:42:22,324 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:42:22,325 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:42:22,331 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:42:22,332 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:42:22,334 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:42:22,334 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:42:22,337 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:42:22,340 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:42:22,343 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:42:22,344 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:42:22,345 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:42:22,346 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:42:22,352 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:42:22,354 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:42:22,356 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:42:22,357 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:42:22,357 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:42:22,366 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:42:22,367 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:42:22,367 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:42:22,368 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:42:22,368 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:42:22,369 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:42:22,369 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:42:22,370 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:42:22,371 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:42:22,371 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:42:22,372 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:42:22,373 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:42:22,373 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:42:22,374 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:42:22,374 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:42:22,375 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:42:22,380 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:42:22,381 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-11-23 15:42:22,433 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:42:22,434 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:42:22,434 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:42:22,434 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:42:22,435 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:42:22,435 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:42:22,435 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:42:22,436 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:42:22,436 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:42:22,436 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:42:22,436 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:42:22,436 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:42:22,437 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:42:22,437 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:42:22,437 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:42:22,437 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:42:22,438 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:42:22,438 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:42:22,439 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:42:22,439 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 15:42:22,442 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:42:22,442 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:42:22,443 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:42:22,443 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:42:22,443 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:42:22,444 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-23 15:42:22,444 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:42:22,445 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:42:22,446 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:42:22,446 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:42:22,446 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:42:22,447 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:42:22,447 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:42:22,447 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:42:22,448 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:42:22,448 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:42:22,449 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:42:22,449 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:42:22,450 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:42:22,450 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:42:22,450 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_60e16828-f20f-472b-ade7-53b0f63f79d2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 172ac4fa0310d14c59d9149bc1b8ec1548860e0b827250d611bfd9d710019753 [2022-11-23 15:42:22,743 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:42:22,778 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:42:22,781 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:42:22,782 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:42:22,782 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:42:22,783 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig9a.c [2022-11-23 15:42:25,696 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:42:25,880 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:42:25,880 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig9a.c [2022-11-23 15:42:25,890 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/data/c47322145/32f8463175b3437c982426e21b105b01/FLAGe630952a6 [2022-11-23 15:42:25,904 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/data/c47322145/32f8463175b3437c982426e21b105b01 [2022-11-23 15:42:25,907 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:42:25,908 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:42:25,909 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:42:25,910 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:42:25,913 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:42:25,914 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:42:25" (1/1) ... [2022-11-23 15:42:25,915 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f9915d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:42:25, skipping insertion in model container [2022-11-23 15:42:25,915 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:42:25" (1/1) ... [2022-11-23 15:42:25,925 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:42:25,940 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:42:26,086 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:42:26,093 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:42:26,113 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:42:26,125 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:42:26,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:42:26 WrapperNode [2022-11-23 15:42:26,126 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:42:26,127 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:42:26,127 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:42:26,127 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:42:26,134 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:42:26" (1/1) ... [2022-11-23 15:42:26,139 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:42:26" (1/1) ... [2022-11-23 15:42:26,155 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 37 [2022-11-23 15:42:26,156 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:42:26,156 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:42:26,157 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:42:26,157 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:42:26,165 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:42:26" (1/1) ... [2022-11-23 15:42:26,166 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:42:26" (1/1) ... [2022-11-23 15:42:26,166 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:42:26" (1/1) ... [2022-11-23 15:42:26,166 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:42:26" (1/1) ... [2022-11-23 15:42:26,168 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:42:26" (1/1) ... [2022-11-23 15:42:26,172 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:42:26" (1/1) ... [2022-11-23 15:42:26,173 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:42:26" (1/1) ... [2022-11-23 15:42:26,173 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:42:26" (1/1) ... [2022-11-23 15:42:26,175 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:42:26,175 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:42:26,175 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:42:26,176 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:42:26,176 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:42:26" (1/1) ... [2022-11-23 15:42:26,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:42:26,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:42:26,205 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:42:26,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:42:26,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:42:26,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:42:26,328 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:42:26,331 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:42:26,425 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:42:26,447 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:42:26,447 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-23 15:42:26,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:42:26 BoogieIcfgContainer [2022-11-23 15:42:26,450 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:42:26,453 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:42:26,453 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:42:26,457 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:42:26,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:42:25" (1/3) ... [2022-11-23 15:42:26,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b63b525 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:42:26, skipping insertion in model container [2022-11-23 15:42:26,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:42:26" (2/3) ... [2022-11-23 15:42:26,459 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b63b525 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:42:26, skipping insertion in model container [2022-11-23 15:42:26,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:42:26" (3/3) ... [2022-11-23 15:42:26,460 INFO L112 eAbstractionObserver]: Analyzing ICFG BrockschmidtCookFuhs-CAV2013-Fig9a.c [2022-11-23 15:42:26,480 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:42:26,480 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-23 15:42:26,547 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:42:26,555 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;@43b21c81, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:42:26,555 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-23 15:42:26,559 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:42:26,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-23 15:42:26,565 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:42:26,566 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-23 15:42:26,567 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-23 15:42:26,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:42:26,572 INFO L85 PathProgramCache]: Analyzing trace with hash 71275045, now seen corresponding path program 1 times [2022-11-23 15:42:26,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:42:26,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103817648] [2022-11-23 15:42:26,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:42:26,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:42:26,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:42:26,839 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 15:42:26,840 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:42:26,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103817648] [2022-11-23 15:42:26,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103817648] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:42:26,841 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:42:26,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 15:42:26,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000633915] [2022-11-23 15:42:26,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:42:26,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:42:26,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:42:26,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:42:26,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:42:26,892 INFO L87 Difference]: Start difference. First operand has 14 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 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 15:42:26,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:42:26,998 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2022-11-23 15:42:26,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 15:42:27,000 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 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 15:42:27,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:42:27,007 INFO L225 Difference]: With dead ends: 28 [2022-11-23 15:42:27,007 INFO L226 Difference]: Without dead ends: 12 [2022-11-23 15:42:27,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:42:27,013 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 16 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:42:27,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 4 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:42:27,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-11-23 15:42:27,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-11-23 15:42:27,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:42:27,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2022-11-23 15:42:27,072 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 5 [2022-11-23 15:42:27,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:42:27,073 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2022-11-23 15:42:27,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 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 15:42:27,073 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2022-11-23 15:42:27,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-23 15:42:27,086 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:42:27,086 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-23 15:42:27,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 15:42:27,087 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-23 15:42:27,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:42:27,088 INFO L85 PathProgramCache]: Analyzing trace with hash 71274263, now seen corresponding path program 1 times [2022-11-23 15:42:27,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:42:27,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586294749] [2022-11-23 15:42:27,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:42:27,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:42:27,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:42:27,132 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 15:42:27,132 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:42:27,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586294749] [2022-11-23 15:42:27,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586294749] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:42:27,133 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:42:27,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:42:27,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305656033] [2022-11-23 15:42:27,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:42:27,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:42:27,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:42:27,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:42:27,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:42:27,136 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 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 15:42:27,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:42:27,169 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2022-11-23 15:42:27,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 15:42:27,170 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 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 15:42:27,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:42:27,171 INFO L225 Difference]: With dead ends: 13 [2022-11-23 15:42:27,171 INFO L226 Difference]: Without dead ends: 12 [2022-11-23 15:42:27,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:42:27,173 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 15 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:42:27,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 6 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 15:42:27,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-11-23 15:42:27,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2022-11-23 15:42:27,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:42:27,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2022-11-23 15:42:27,186 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 5 [2022-11-23 15:42:27,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:42:27,187 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2022-11-23 15:42:27,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 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 15:42:27,188 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2022-11-23 15:42:27,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-23 15:42:27,190 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:42:27,190 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-23 15:42:27,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 15:42:27,190 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-23 15:42:27,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:42:27,197 INFO L85 PathProgramCache]: Analyzing trace with hash -2085465086, now seen corresponding path program 1 times [2022-11-23 15:42:27,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:42:27,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507411738] [2022-11-23 15:42:27,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:42:27,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:42:27,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:42:27,281 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 15:42:27,289 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:42:27,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507411738] [2022-11-23 15:42:27,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507411738] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:42:27,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:42:27,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 15:42:27,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748443982] [2022-11-23 15:42:27,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:42:27,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:42:27,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:42:27,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:42:27,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:42:27,293 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:42:27,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:42:27,333 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2022-11-23 15:42:27,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 15:42:27,334 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-23 15:42:27,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:42:27,335 INFO L225 Difference]: With dead ends: 14 [2022-11-23 15:42:27,335 INFO L226 Difference]: Without dead ends: 13 [2022-11-23 15:42:27,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:42:27,338 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 12 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:42:27,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 7 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 15:42:27,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-11-23 15:42:27,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-11-23 15:42:27,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 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 15:42:27,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2022-11-23 15:42:27,351 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 6 [2022-11-23 15:42:27,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:42:27,352 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2022-11-23 15:42:27,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:42:27,353 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2022-11-23 15:42:27,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-23 15:42:27,354 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:42:27,354 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:42:27,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 15:42:27,355 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-23 15:42:27,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:42:27,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1388363442, now seen corresponding path program 1 times [2022-11-23 15:42:27,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:42:27,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346128516] [2022-11-23 15:42:27,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:42:27,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:42:27,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:42:27,448 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 15:42:27,448 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:42:27,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346128516] [2022-11-23 15:42:27,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346128516] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:42:27,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:42:27,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 15:42:27,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190301281] [2022-11-23 15:42:27,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:42:27,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:42:27,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:42:27,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:42:27,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:42:27,451 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:42:27,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:42:27,507 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2022-11-23 15:42:27,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:42:27,508 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-23 15:42:27,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:42:27,509 INFO L225 Difference]: With dead ends: 24 [2022-11-23 15:42:27,509 INFO L226 Difference]: Without dead ends: 23 [2022-11-23 15:42:27,509 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 15:42:27,511 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 1 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:42:27,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 8 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 15:42:27,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-11-23 15:42:27,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2022-11-23 15:42:27,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 20 states have (on average 1.25) internal successors, (25), 21 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:42:27,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2022-11-23 15:42:27,519 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 9 [2022-11-23 15:42:27,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:42:27,520 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2022-11-23 15:42:27,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:42:27,520 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2022-11-23 15:42:27,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-23 15:42:27,520 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:42:27,521 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-23 15:42:27,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 15:42:27,521 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-23 15:42:27,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:42:27,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1388387691, now seen corresponding path program 1 times [2022-11-23 15:42:27,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:42:27,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711209282] [2022-11-23 15:42:27,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:42:27,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:42:27,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:42:27,588 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:42:27,588 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:42:27,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711209282] [2022-11-23 15:42:27,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711209282] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:42:27,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192018099] [2022-11-23 15:42:27,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:42:27,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:42:27,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:42:27,606 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:42:27,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 15:42:27,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:42:27,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 15:42:27,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:42:27,781 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:42:27,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:42:27,814 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:42:27,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [192018099] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:42:27,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [550656744] [2022-11-23 15:42:27,849 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2022-11-23 15:42:27,849 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:42:27,852 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:42:27,858 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:42:27,858 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:42:28,026 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:42:28,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [550656744] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:42:28,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:42:28,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5, 5] total 12 [2022-11-23 15:42:28,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330956605] [2022-11-23 15:42:28,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:42:28,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 15:42:28,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:42:28,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 15:42:28,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-11-23 15:42:28,308 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 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 15:42:28,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:42:28,364 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2022-11-23 15:42:28,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 15:42:28,365 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 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 9 [2022-11-23 15:42:28,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:42:28,366 INFO L225 Difference]: With dead ends: 27 [2022-11-23 15:42:28,366 INFO L226 Difference]: Without dead ends: 26 [2022-11-23 15:42:28,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 6 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-11-23 15:42:28,368 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 12 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:42:28,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 15:42:28,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-23 15:42:28,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 20. [2022-11-23 15:42:28,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:42:28,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2022-11-23 15:42:28,376 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 9 [2022-11-23 15:42:28,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:42:28,377 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2022-11-23 15:42:28,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 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 15:42:28,377 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2022-11-23 15:42:28,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-23 15:42:28,378 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:42:28,378 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2022-11-23 15:42:28,392 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-23 15:42:28,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:42:28,583 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-23 15:42:28,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:42:28,584 INFO L85 PathProgramCache]: Analyzing trace with hash 101086583, now seen corresponding path program 1 times [2022-11-23 15:42:28,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:42:28,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178772494] [2022-11-23 15:42:28,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:42:28,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:42:28,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:42:28,675 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 15:42:28,675 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:42:28,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178772494] [2022-11-23 15:42:28,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178772494] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:42:28,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977826919] [2022-11-23 15:42:28,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:42:28,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:42:28,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:42:28,680 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:42:28,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 15:42:28,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:42:28,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 15:42:28,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:42:28,779 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 15:42:28,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:42:28,832 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 15:42:28,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1977826919] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:42:28,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1454395693] [2022-11-23 15:42:28,844 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-23 15:42:28,844 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:42:28,844 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:42:28,845 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:42:28,845 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:42:29,299 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:42:29,501 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '428#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= |ULTIMATE.start_main_~k~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~j~0#1|) (<= |ULTIMATE.start_main_~j~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_~i~0#1|) (<= 1 |ULTIMATE.start_main_~k~0#1|) (<= 0 |ULTIMATE.start_main_~n~0#1|))' at error location [2022-11-23 15:42:29,501 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:42:29,501 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:42:29,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-11-23 15:42:29,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058586105] [2022-11-23 15:42:29,502 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:42:29,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 15:42:29,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:42:29,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 15:42:29,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-11-23 15:42:29,504 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 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 15:42:29,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:42:29,569 INFO L93 Difference]: Finished difference Result 51 states and 58 transitions. [2022-11-23 15:42:29,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 15:42:29,570 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 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 16 [2022-11-23 15:42:29,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:42:29,571 INFO L225 Difference]: With dead ends: 51 [2022-11-23 15:42:29,571 INFO L226 Difference]: Without dead ends: 50 [2022-11-23 15:42:29,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-11-23 15:42:29,572 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:42:29,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 17 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:42:29,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-11-23 15:42:29,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 47. [2022-11-23 15:42:29,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 45 states have (on average 1.2222222222222223) internal successors, (55), 46 states have internal predecessors, (55), 0 states have call successors, (0), 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 15:42:29,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2022-11-23 15:42:29,586 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 16 [2022-11-23 15:42:29,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:42:29,586 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2022-11-23 15:42:29,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 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 15:42:29,587 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2022-11-23 15:42:29,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-23 15:42:29,587 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:42:29,588 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-23 15:42:29,598 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 15:42:29,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-23 15:42:29,793 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-23 15:42:29,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:42:29,794 INFO L85 PathProgramCache]: Analyzing trace with hash 101062334, now seen corresponding path program 1 times [2022-11-23 15:42:29,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:42:29,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962002773] [2022-11-23 15:42:29,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:42:29,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:42:29,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:42:29,920 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 15:42:29,921 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:42:29,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962002773] [2022-11-23 15:42:29,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962002773] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:42:29,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003238464] [2022-11-23 15:42:29,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:42:29,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:42:29,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:42:29,924 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:42:29,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 15:42:29,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:42:29,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 15:42:29,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:42:30,049 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 15:42:30,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:42:30,153 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 15:42:30,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2003238464] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:42:30,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2087086827] [2022-11-23 15:42:30,162 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-23 15:42:30,162 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:42:30,162 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:42:30,163 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:42:30,163 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:42:30,441 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:42:30,722 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '667#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (<= |ULTIMATE.start_main_~k~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= 1 |ULTIMATE.start_main_~k~0#1|) (<= 0 |ULTIMATE.start_main_~n~0#1|) (not (<= (+ |ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1|) 2147483647)))' at error location [2022-11-23 15:42:30,723 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:42:30,723 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:42:30,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2022-11-23 15:42:30,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408182870] [2022-11-23 15:42:30,723 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:42:30,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-23 15:42:30,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:42:30,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-23 15:42:30,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2022-11-23 15:42:30,725 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand has 15 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 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 15:42:31,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:42:31,362 INFO L93 Difference]: Finished difference Result 83 states and 97 transitions. [2022-11-23 15:42:31,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-23 15:42:31,362 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 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 16 [2022-11-23 15:42:31,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:42:31,363 INFO L225 Difference]: With dead ends: 83 [2022-11-23 15:42:31,363 INFO L226 Difference]: Without dead ends: 82 [2022-11-23 15:42:31,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 585 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=447, Invalid=1715, Unknown=0, NotChecked=0, Total=2162 [2022-11-23 15:42:31,365 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 122 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 15:42:31,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 8 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 15:42:31,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-11-23 15:42:31,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 59. [2022-11-23 15:42:31,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 57 states have (on average 1.2456140350877194) internal successors, (71), 58 states have internal predecessors, (71), 0 states have call successors, (0), 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 15:42:31,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 71 transitions. [2022-11-23 15:42:31,379 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 71 transitions. Word has length 16 [2022-11-23 15:42:31,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:42:31,379 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 71 transitions. [2022-11-23 15:42:31,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 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 15:42:31,379 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 71 transitions. [2022-11-23 15:42:31,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-23 15:42:31,380 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:42:31,380 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 2, 1, 1, 1, 1, 1, 1] [2022-11-23 15:42:31,389 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 15:42:31,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:42:31,581 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-23 15:42:31,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:42:31,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1393568990, now seen corresponding path program 2 times [2022-11-23 15:42:31,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:42:31,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675112551] [2022-11-23 15:42:31,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:42:31,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:42:31,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:42:31,669 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-23 15:42:31,670 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:42:31,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675112551] [2022-11-23 15:42:31,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675112551] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:42:31,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552790005] [2022-11-23 15:42:31,670 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 15:42:31,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:42:31,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:42:31,671 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:42:31,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 15:42:31,712 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-23 15:42:31,712 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:42:31,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-23 15:42:31,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:42:31,892 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 17 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 15:42:31,892 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:42:31,993 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 8 proven. 27 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 15:42:31,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1552790005] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:42:31,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [8629164] [2022-11-23 15:42:31,997 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-23 15:42:31,997 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:42:31,998 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:42:31,998 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:42:31,998 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:42:32,281 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:42:32,551 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1053#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (<= |ULTIMATE.start_main_~k~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= 1 |ULTIMATE.start_main_~k~0#1|) (<= 0 |ULTIMATE.start_main_~n~0#1|) (not (<= (+ |ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1|) 2147483647)))' at error location [2022-11-23 15:42:32,551 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:42:32,551 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:42:32,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 16 [2022-11-23 15:42:32,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921429723] [2022-11-23 15:42:32,552 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:42:32,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-23 15:42:32,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:42:32,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-23 15:42:32,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=377, Unknown=0, NotChecked=0, Total=462 [2022-11-23 15:42:32,553 INFO L87 Difference]: Start difference. First operand 59 states and 71 transitions. Second operand has 16 states, 16 states have (on average 3.25) internal successors, (52), 16 states have internal predecessors, (52), 0 states have call successors, (0), 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 15:42:32,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:42:32,865 INFO L93 Difference]: Finished difference Result 113 states and 135 transitions. [2022-11-23 15:42:32,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-23 15:42:32,866 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.25) internal successors, (52), 16 states have internal predecessors, (52), 0 states have call successors, (0), 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 22 [2022-11-23 15:42:32,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:42:32,867 INFO L225 Difference]: With dead ends: 113 [2022-11-23 15:42:32,867 INFO L226 Difference]: Without dead ends: 58 [2022-11-23 15:42:32,868 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 48 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=196, Invalid=734, Unknown=0, NotChecked=0, Total=930 [2022-11-23 15:42:32,868 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 62 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:42:32,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 1 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:42:32,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-11-23 15:42:32,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 55. [2022-11-23 15:42:32,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 53 states have (on average 1.1886792452830188) internal successors, (63), 54 states have internal predecessors, (63), 0 states have call successors, (0), 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 15:42:32,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 63 transitions. [2022-11-23 15:42:32,882 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 63 transitions. Word has length 22 [2022-11-23 15:42:32,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:42:32,882 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 63 transitions. [2022-11-23 15:42:32,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.25) internal successors, (52), 16 states have internal predecessors, (52), 0 states have call successors, (0), 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 15:42:32,884 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 63 transitions. [2022-11-23 15:42:32,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-23 15:42:32,885 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:42:32,886 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 2, 2, 2, 1, 1, 1] [2022-11-23 15:42:32,896 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 15:42:33,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-23 15:42:33,091 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-23 15:42:33,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:42:33,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1752683710, now seen corresponding path program 3 times [2022-11-23 15:42:33,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:42:33,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703052710] [2022-11-23 15:42:33,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:42:33,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:42:33,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:42:33,261 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 9 proven. 36 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 15:42:33,261 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:42:33,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703052710] [2022-11-23 15:42:33,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703052710] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:42:33,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262850737] [2022-11-23 15:42:33,262 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 15:42:33,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:42:33,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:42:33,263 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:42:33,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 15:42:33,308 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 15:42:33,308 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:42:33,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-23 15:42:33,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:42:33,524 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 20 proven. 25 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 15:42:33,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:42:33,696 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 9 proven. 36 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 15:42:33,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [262850737] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:42:33,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [911218970] [2022-11-23 15:42:33,698 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-23 15:42:33,698 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:42:33,699 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:42:33,699 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:42:33,699 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:42:33,924 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:42:34,246 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1475#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (<= |ULTIMATE.start_main_~k~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= 1 |ULTIMATE.start_main_~k~0#1|) (<= 0 |ULTIMATE.start_main_~n~0#1|) (not (<= (+ |ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1|) 2147483647)))' at error location [2022-11-23 15:42:34,246 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:42:34,246 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:42:34,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-11-23 15:42:34,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015113063] [2022-11-23 15:42:34,247 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:42:34,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-23 15:42:34,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:42:34,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-23 15:42:34,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=800, Unknown=0, NotChecked=0, Total=930 [2022-11-23 15:42:34,248 INFO L87 Difference]: Start difference. First operand 55 states and 63 transitions. Second operand has 25 states, 25 states have (on average 2.56) internal successors, (64), 25 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 15:42:34,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:42:34,970 INFO L93 Difference]: Finished difference Result 160 states and 184 transitions. [2022-11-23 15:42:34,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-23 15:42:34,971 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.56) internal successors, (64), 25 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 26 [2022-11-23 15:42:34,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:42:34,972 INFO L225 Difference]: With dead ends: 160 [2022-11-23 15:42:34,972 INFO L226 Difference]: Without dead ends: 132 [2022-11-23 15:42:34,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 56 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 542 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=461, Invalid=1989, Unknown=0, NotChecked=0, Total=2450 [2022-11-23 15:42:34,973 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 161 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 15:42:34,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 1 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 15:42:34,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2022-11-23 15:42:34,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 110. [2022-11-23 15:42:34,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 108 states have (on average 1.1851851851851851) internal successors, (128), 109 states have internal predecessors, (128), 0 states have call successors, (0), 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 15:42:34,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 128 transitions. [2022-11-23 15:42:34,996 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 128 transitions. Word has length 26 [2022-11-23 15:42:34,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:42:34,997 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 128 transitions. [2022-11-23 15:42:34,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.56) internal successors, (64), 25 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 15:42:34,997 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 128 transitions. [2022-11-23 15:42:34,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-23 15:42:34,998 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:42:34,998 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 3, 2, 2, 2, 1, 1, 1] [2022-11-23 15:42:35,008 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-23 15:42:35,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:42:35,203 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-23 15:42:35,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:42:35,204 INFO L85 PathProgramCache]: Analyzing trace with hash 214492445, now seen corresponding path program 4 times [2022-11-23 15:42:35,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:42:35,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633059173] [2022-11-23 15:42:35,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:42:35,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:42:35,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:42:35,335 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 15:42:35,335 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:42:35,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633059173] [2022-11-23 15:42:35,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633059173] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:42:35,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114807474] [2022-11-23 15:42:35,336 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-23 15:42:35,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:42:35,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:42:35,340 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:42:35,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-23 15:42:35,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:42:35,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-23 15:42:35,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:42:35,525 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 9 proven. 53 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 15:42:35,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:42:35,673 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 1 proven. 61 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 15:42:35,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114807474] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:42:35,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1935912323] [2022-11-23 15:42:35,675 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-23 15:42:35,675 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:42:35,675 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:42:35,675 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:42:35,676 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:42:35,888 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:42:36,191 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2071#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (<= |ULTIMATE.start_main_~k~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= 1 |ULTIMATE.start_main_~k~0#1|) (<= 0 |ULTIMATE.start_main_~n~0#1|) (not (<= (+ |ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1|) 2147483647)))' at error location [2022-11-23 15:42:36,191 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:42:36,191 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:42:36,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2022-11-23 15:42:36,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207494413] [2022-11-23 15:42:36,191 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:42:36,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-23 15:42:36,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:42:36,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-23 15:42:36,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=703, Unknown=0, NotChecked=0, Total=812 [2022-11-23 15:42:36,193 INFO L87 Difference]: Start difference. First operand 110 states and 128 transitions. Second operand has 23 states, 22 states have (on average 3.272727272727273) internal successors, (72), 23 states have internal predecessors, (72), 0 states have call successors, (0), 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 15:42:38,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:42:38,375 INFO L93 Difference]: Finished difference Result 299 states and 375 transitions. [2022-11-23 15:42:38,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2022-11-23 15:42:38,376 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 3.272727272727273) internal successors, (72), 23 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-11-23 15:42:38,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:42:38,378 INFO L225 Difference]: With dead ends: 299 [2022-11-23 15:42:38,379 INFO L226 Difference]: Without dead ends: 297 [2022-11-23 15:42:38,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3481 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1881, Invalid=8219, Unknown=0, NotChecked=0, Total=10100 [2022-11-23 15:42:38,382 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 177 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 632 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 15:42:38,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 7 Invalid, 739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 632 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 15:42:38,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2022-11-23 15:42:38,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 207. [2022-11-23 15:42:38,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 205 states have (on average 1.2) internal successors, (246), 206 states have internal predecessors, (246), 0 states have call successors, (0), 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 15:42:38,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 246 transitions. [2022-11-23 15:42:38,420 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 246 transitions. Word has length 29 [2022-11-23 15:42:38,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:42:38,421 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 246 transitions. [2022-11-23 15:42:38,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 3.272727272727273) internal successors, (72), 23 states have internal predecessors, (72), 0 states have call successors, (0), 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 15:42:38,421 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 246 transitions. [2022-11-23 15:42:38,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-23 15:42:38,422 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:42:38,422 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 1, 1, 1] [2022-11-23 15:42:38,435 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-23 15:42:38,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-23 15:42:38,628 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-23 15:42:38,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:42:38,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1152997646, now seen corresponding path program 2 times [2022-11-23 15:42:38,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:42:38,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640472895] [2022-11-23 15:42:38,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:42:38,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:42:38,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:42:38,682 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-11-23 15:42:38,683 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:42:38,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640472895] [2022-11-23 15:42:38,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640472895] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:42:38,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439348726] [2022-11-23 15:42:38,683 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 15:42:38,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:42:38,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:42:38,692 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:42:38,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-23 15:42:38,740 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-23 15:42:38,741 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:42:38,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 15:42:38,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:42:38,786 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-11-23 15:42:38,787 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:42:38,835 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-11-23 15:42:38,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [439348726] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:42:38,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1375331915] [2022-11-23 15:42:38,837 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-23 15:42:38,837 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:42:38,838 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:42:38,838 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:42:38,838 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:42:39,023 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:42:39,187 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3121#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= |ULTIMATE.start_main_~k~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~j~0#1|) (<= |ULTIMATE.start_main_~j~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_~i~0#1|) (<= 1 |ULTIMATE.start_main_~k~0#1|) (<= 0 |ULTIMATE.start_main_~n~0#1|))' at error location [2022-11-23 15:42:39,187 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:42:39,187 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:42:39,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2022-11-23 15:42:39,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405189950] [2022-11-23 15:42:39,188 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:42:39,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:42:39,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:42:39,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:42:39,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-23 15:42:39,189 INFO L87 Difference]: Start difference. First operand 207 states and 246 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 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 15:42:39,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:42:39,232 INFO L93 Difference]: Finished difference Result 207 states and 246 transitions. [2022-11-23 15:42:39,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 15:42:39,232 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 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) Word has length 37 [2022-11-23 15:42:39,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:42:39,234 INFO L225 Difference]: With dead ends: 207 [2022-11-23 15:42:39,234 INFO L226 Difference]: Without dead ends: 206 [2022-11-23 15:42:39,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 102 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-23 15:42:39,235 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 2 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:42:39,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 4 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 15:42:39,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2022-11-23 15:42:39,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 180. [2022-11-23 15:42:39,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 1.1843575418994414) internal successors, (212), 179 states have internal predecessors, (212), 0 states have call successors, (0), 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 15:42:39,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 212 transitions. [2022-11-23 15:42:39,270 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 212 transitions. Word has length 37 [2022-11-23 15:42:39,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:42:39,271 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 212 transitions. [2022-11-23 15:42:39,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 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 15:42:39,271 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 212 transitions. [2022-11-23 15:42:39,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-23 15:42:39,272 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:42:39,272 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 1, 1, 1] [2022-11-23 15:42:39,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-23 15:42:39,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:42:39,477 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-23 15:42:39,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:42:39,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1152973397, now seen corresponding path program 5 times [2022-11-23 15:42:39,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:42:39,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991656955] [2022-11-23 15:42:39,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:42:39,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:42:39,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:42:39,587 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-23 15:42:39,587 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:42:39,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991656955] [2022-11-23 15:42:39,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991656955] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:42:39,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1613046552] [2022-11-23 15:42:39,588 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 15:42:39,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:42:39,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:42:39,592 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:42:39,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-23 15:42:39,645 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-11-23 15:42:39,645 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:42:39,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-23 15:42:39,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:42:39,734 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-23 15:42:39,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:42:39,896 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-23 15:42:39,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1613046552] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:42:39,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [112332548] [2022-11-23 15:42:39,899 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-23 15:42:39,899 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:42:39,899 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:42:39,899 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:42:39,899 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:42:40,111 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:42:40,378 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3897#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (<= |ULTIMATE.start_main_~k~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= 1 |ULTIMATE.start_main_~k~0#1|) (<= 0 |ULTIMATE.start_main_~n~0#1|) (not (<= (+ |ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1|) 2147483647)))' at error location [2022-11-23 15:42:40,379 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:42:40,379 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:42:40,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2022-11-23 15:42:40,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646929947] [2022-11-23 15:42:40,379 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:42:40,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-23 15:42:40,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:42:40,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-23 15:42:40,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=576, Unknown=0, NotChecked=0, Total=702 [2022-11-23 15:42:40,381 INFO L87 Difference]: Start difference. First operand 180 states and 212 transitions. Second operand has 21 states, 20 states have (on average 4.0) internal successors, (80), 21 states have internal predecessors, (80), 0 states have call successors, (0), 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 15:42:41,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:42:41,976 INFO L93 Difference]: Finished difference Result 1060 states and 1257 transitions. [2022-11-23 15:42:41,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-11-23 15:42:41,977 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 4.0) internal successors, (80), 21 states have internal predecessors, (80), 0 states have call successors, (0), 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 37 [2022-11-23 15:42:41,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:42:41,983 INFO L225 Difference]: With dead ends: 1060 [2022-11-23 15:42:41,983 INFO L226 Difference]: Without dead ends: 1059 [2022-11-23 15:42:41,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2789 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1723, Invalid=6109, Unknown=0, NotChecked=0, Total=7832 [2022-11-23 15:42:41,989 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 214 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 15:42:41,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 12 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 15:42:41,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1059 states. [2022-11-23 15:42:42,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1059 to 333. [2022-11-23 15:42:42,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 332 states have (on average 1.1626506024096386) internal successors, (386), 332 states have internal predecessors, (386), 0 states have call successors, (0), 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 15:42:42,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 386 transitions. [2022-11-23 15:42:42,039 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 386 transitions. Word has length 37 [2022-11-23 15:42:42,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:42:42,039 INFO L495 AbstractCegarLoop]: Abstraction has 333 states and 386 transitions. [2022-11-23 15:42:42,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 4.0) internal successors, (80), 21 states have internal predecessors, (80), 0 states have call successors, (0), 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 15:42:42,039 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 386 transitions. [2022-11-23 15:42:42,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-23 15:42:42,042 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:42:42,042 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 9, 5, 4, 4, 4, 1, 1, 1] [2022-11-23 15:42:42,047 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-11-23 15:42:42,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-23 15:42:42,247 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-23 15:42:42,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:42:42,247 INFO L85 PathProgramCache]: Analyzing trace with hash 389168205, now seen corresponding path program 6 times [2022-11-23 15:42:42,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:42:42,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162352134] [2022-11-23 15:42:42,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:42:42,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:42:42,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:42:42,531 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 56 proven. 140 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-23 15:42:42,531 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:42:42,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162352134] [2022-11-23 15:42:42,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162352134] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:42:42,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103347850] [2022-11-23 15:42:42,532 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 15:42:42,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:42:42,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:42:42,533 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:42:42,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-23 15:42:42,571 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 15:42:42,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:42:42,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-23 15:42:42,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:42:42,949 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 36 proven. 156 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-23 15:42:42,949 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:42:43,210 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 19 proven. 173 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-23 15:42:43,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [103347850] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:42:43,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2122584549] [2022-11-23 15:42:43,212 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-23 15:42:43,212 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:42:43,212 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:42:43,212 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:42:43,213 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:42:43,353 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:42:44,043 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6251#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (<= |ULTIMATE.start_main_~k~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~j~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~n~0#1|) (not (<= (+ |ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1|) 2147483647)))' at error location [2022-11-23 15:42:44,043 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:42:44,043 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:42:44,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 33 [2022-11-23 15:42:44,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219809685] [2022-11-23 15:42:44,044 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:42:44,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-23 15:42:44,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:42:44,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-23 15:42:44,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=1375, Unknown=0, NotChecked=0, Total=1560 [2022-11-23 15:42:44,045 INFO L87 Difference]: Start difference. First operand 333 states and 386 transitions. Second operand has 33 states, 33 states have (on average 3.272727272727273) internal successors, (108), 33 states have internal predecessors, (108), 0 states have call successors, (0), 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 15:42:47,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:42:47,247 INFO L93 Difference]: Finished difference Result 857 states and 1003 transitions. [2022-11-23 15:42:47,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-11-23 15:42:47,248 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.272727272727273) internal successors, (108), 33 states have internal predecessors, (108), 0 states have call successors, (0), 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 49 [2022-11-23 15:42:47,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:42:47,251 INFO L225 Difference]: With dead ends: 857 [2022-11-23 15:42:47,251 INFO L226 Difference]: Without dead ends: 657 [2022-11-23 15:42:47,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 114 SyntacticMatches, 8 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3514 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=2130, Invalid=9860, Unknown=0, NotChecked=0, Total=11990 [2022-11-23 15:42:47,255 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 300 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 954 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 1077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 954 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-23 15:42:47,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 1 Invalid, 1077 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 954 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-23 15:42:47,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2022-11-23 15:42:47,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 553. [2022-11-23 15:42:47,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 552 states have (on average 1.164855072463768) internal successors, (643), 552 states have internal predecessors, (643), 0 states have call successors, (0), 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 15:42:47,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 643 transitions. [2022-11-23 15:42:47,341 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 643 transitions. Word has length 49 [2022-11-23 15:42:47,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:42:47,341 INFO L495 AbstractCegarLoop]: Abstraction has 553 states and 643 transitions. [2022-11-23 15:42:47,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.272727272727273) internal successors, (108), 33 states have internal predecessors, (108), 0 states have call successors, (0), 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 15:42:47,342 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 643 transitions. [2022-11-23 15:42:47,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-23 15:42:47,344 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:42:47,344 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 15, 5, 4, 4, 4, 1, 1, 1] [2022-11-23 15:42:47,354 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-23 15:42:47,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-23 15:42:47,549 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-23 15:42:47,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:42:47,550 INFO L85 PathProgramCache]: Analyzing trace with hash 129055869, now seen corresponding path program 7 times [2022-11-23 15:42:47,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:42:47,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015521217] [2022-11-23 15:42:47,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:42:47,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:42:47,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:42:47,757 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 240 proven. 136 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-11-23 15:42:47,757 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:42:47,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015521217] [2022-11-23 15:42:47,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015521217] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:42:47,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934805224] [2022-11-23 15:42:47,758 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-23 15:42:47,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:42:47,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:42:47,759 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:42:47,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-23 15:42:47,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:42:47,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-23 15:42:47,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:42:48,104 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 258 proven. 118 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-11-23 15:42:48,104 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:42:48,253 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 245 proven. 131 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-11-23 15:42:48,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1934805224] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:42:48,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [971682780] [2022-11-23 15:42:48,255 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-23 15:42:48,256 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:42:48,256 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:42:48,256 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:42:48,256 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:42:48,400 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:42:49,027 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8753#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (<= |ULTIMATE.start_main_~k~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~j~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~n~0#1|) (not (<= (+ |ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1|) 2147483647)))' at error location [2022-11-23 15:42:49,027 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:42:49,027 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:42:49,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 23 [2022-11-23 15:42:49,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986570380] [2022-11-23 15:42:49,028 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:42:49,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-23 15:42:49,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:42:49,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-23 15:42:49,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=743, Unknown=0, NotChecked=0, Total=870 [2022-11-23 15:42:49,029 INFO L87 Difference]: Start difference. First operand 553 states and 643 transitions. Second operand has 23 states, 23 states have (on average 3.217391304347826) internal successors, (74), 23 states have internal predecessors, (74), 0 states have call successors, (0), 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 15:42:49,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:42:49,591 INFO L93 Difference]: Finished difference Result 597 states and 696 transitions. [2022-11-23 15:42:49,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-23 15:42:49,592 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.217391304347826) internal successors, (74), 23 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-11-23 15:42:49,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:42:49,593 INFO L225 Difference]: With dead ends: 597 [2022-11-23 15:42:49,593 INFO L226 Difference]: Without dead ends: 477 [2022-11-23 15:42:49,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 171 SyntacticMatches, 13 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 604 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=275, Invalid=1705, Unknown=0, NotChecked=0, Total=1980 [2022-11-23 15:42:49,595 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 72 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 15:42:49,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 1 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 15:42:49,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2022-11-23 15:42:49,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 474. [2022-11-23 15:42:49,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 473 states have (on average 1.1522198731501057) internal successors, (545), 473 states have internal predecessors, (545), 0 states have call successors, (0), 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 15:42:49,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 545 transitions. [2022-11-23 15:42:49,676 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 545 transitions. Word has length 67 [2022-11-23 15:42:49,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:42:49,677 INFO L495 AbstractCegarLoop]: Abstraction has 474 states and 545 transitions. [2022-11-23 15:42:49,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.217391304347826) internal successors, (74), 23 states have internal predecessors, (74), 0 states have call successors, (0), 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 15:42:49,677 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 545 transitions. [2022-11-23 15:42:49,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-23 15:42:49,678 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:42:49,678 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 8, 7, 7, 7, 1, 1, 1] [2022-11-23 15:42:49,683 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-23 15:42:49,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:42:49,883 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-23 15:42:49,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:42:49,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1051885294, now seen corresponding path program 8 times [2022-11-23 15:42:49,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:42:49,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881251916] [2022-11-23 15:42:49,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:42:49,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:42:49,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:42:50,145 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 402 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 15:42:50,145 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:42:50,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881251916] [2022-11-23 15:42:50,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881251916] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:42:50,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [888325944] [2022-11-23 15:42:50,146 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 15:42:50,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:42:50,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:42:50,147 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:42:50,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-23 15:42:50,198 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2022-11-23 15:42:50,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:42:50,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-23 15:42:50,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:42:50,479 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 184 proven. 184 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-23 15:42:50,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:42:50,960 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 184 proven. 184 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-23 15:42:50,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [888325944] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:42:50,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1116169072] [2022-11-23 15:42:50,961 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-23 15:42:50,962 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:42:50,962 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:42:50,962 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:42:50,962 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:42:51,112 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:42:52,015 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '10719#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (<= |ULTIMATE.start_main_~k~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~j~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~n~0#1|) (not (<= (+ |ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1|) 2147483647)))' at error location [2022-11-23 15:42:52,015 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:42:52,015 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:42:52,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 36 [2022-11-23 15:42:52,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64755496] [2022-11-23 15:42:52,016 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:42:52,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-23 15:42:52,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:42:52,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-23 15:42:52,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=1642, Unknown=0, NotChecked=0, Total=1892 [2022-11-23 15:42:52,018 INFO L87 Difference]: Start difference. First operand 474 states and 545 transitions. Second operand has 37 states, 36 states have (on average 4.111111111111111) internal successors, (148), 37 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 15:43:08,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:43:08,744 INFO L93 Difference]: Finished difference Result 1468 states and 1758 transitions. [2022-11-23 15:43:08,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 271 states. [2022-11-23 15:43:08,745 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 4.111111111111111) internal successors, (148), 37 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 70 [2022-11-23 15:43:08,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:43:08,749 INFO L225 Difference]: With dead ends: 1468 [2022-11-23 15:43:08,749 INFO L226 Difference]: Without dead ends: 1467 [2022-11-23 15:43:08,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 493 GetRequests, 179 SyntacticMatches, 7 SemanticMatches, 307 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43321 ImplicationChecksByTransitivity, 16.4s TimeCoverageRelationStatistics Valid=18014, Invalid=77158, Unknown=0, NotChecked=0, Total=95172 [2022-11-23 15:43:08,763 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 2776 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 894 mSolverCounterSat, 920 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2776 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 1814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 920 IncrementalHoareTripleChecker+Valid, 894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-23 15:43:08,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2776 Valid, 2 Invalid, 1814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [920 Valid, 894 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-23 15:43:08,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1467 states. [2022-11-23 15:43:08,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1467 to 770. [2022-11-23 15:43:08,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 770 states, 769 states have (on average 1.1781534460338101) internal successors, (906), 769 states have internal predecessors, (906), 0 states have call successors, (0), 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 15:43:08,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 770 states to 770 states and 906 transitions. [2022-11-23 15:43:08,896 INFO L78 Accepts]: Start accepts. Automaton has 770 states and 906 transitions. Word has length 70 [2022-11-23 15:43:08,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:43:08,897 INFO L495 AbstractCegarLoop]: Abstraction has 770 states and 906 transitions. [2022-11-23 15:43:08,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 4.111111111111111) internal successors, (148), 37 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 15:43:08,897 INFO L276 IsEmpty]: Start isEmpty. Operand 770 states and 906 transitions. [2022-11-23 15:43:08,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-23 15:43:08,898 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:43:08,898 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 10, 10, 10, 1, 1, 1] [2022-11-23 15:43:08,904 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-11-23 15:43:09,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-23 15:43:09,103 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-23 15:43:09,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:43:09,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1973584373, now seen corresponding path program 9 times [2022-11-23 15:43:09,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:43:09,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24377165] [2022-11-23 15:43:09,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:43:09,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:43:09,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:43:09,398 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 0 proven. 498 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-23 15:43:09,398 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:43:09,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24377165] [2022-11-23 15:43:09,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24377165] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:43:09,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799480451] [2022-11-23 15:43:09,399 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 15:43:09,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:43:09,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:43:09,400 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:43:09,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-23 15:43:09,467 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 15:43:09,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:43:09,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-23 15:43:09,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:43:09,624 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 0 proven. 498 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-23 15:43:09,624 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:43:10,010 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 0 proven. 498 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-23 15:43:10,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1799480451] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:43:10,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1922150134] [2022-11-23 15:43:10,012 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-23 15:43:10,012 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:43:10,012 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:43:10,012 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:43:10,012 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:43:10,152 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:43:10,997 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '14825#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (<= |ULTIMATE.start_main_~k~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~j~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~n~0#1|) (not (<= (+ |ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1|) 2147483647)))' at error location [2022-11-23 15:43:10,997 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:43:10,997 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:43:10,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-11-23 15:43:10,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11022028] [2022-11-23 15:43:10,998 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:43:10,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-23 15:43:10,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:43:10,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-23 15:43:10,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=362, Invalid=1198, Unknown=0, NotChecked=0, Total=1560 [2022-11-23 15:43:11,000 INFO L87 Difference]: Start difference. First operand 770 states and 906 transitions. Second operand has 33 states, 32 states have (on average 5.125) internal successors, (164), 33 states have internal predecessors, (164), 0 states have call successors, (0), 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 15:43:16,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:43:16,709 INFO L93 Difference]: Finished difference Result 6674 states and 7979 transitions. [2022-11-23 15:43:16,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 178 states. [2022-11-23 15:43:16,710 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 5.125) internal successors, (164), 33 states have internal predecessors, (164), 0 states have call successors, (0), 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 79 [2022-11-23 15:43:16,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:43:16,730 INFO L225 Difference]: With dead ends: 6674 [2022-11-23 15:43:16,730 INFO L226 Difference]: Without dead ends: 6673 [2022-11-23 15:43:16,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 202 SyntacticMatches, 10 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15948 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=8352, Invalid=28320, Unknown=0, NotChecked=0, Total=36672 [2022-11-23 15:43:16,735 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 775 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 775 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 15:43:16,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [775 Valid, 21 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 15:43:16,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6673 states. [2022-11-23 15:43:17,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6673 to 2752. [2022-11-23 15:43:17,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2752 states, 2751 states have (on average 1.1686659396583061) internal successors, (3215), 2751 states have internal predecessors, (3215), 0 states have call successors, (0), 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 15:43:17,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2752 states to 2752 states and 3215 transitions. [2022-11-23 15:43:17,290 INFO L78 Accepts]: Start accepts. Automaton has 2752 states and 3215 transitions. Word has length 79 [2022-11-23 15:43:17,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:43:17,290 INFO L495 AbstractCegarLoop]: Abstraction has 2752 states and 3215 transitions. [2022-11-23 15:43:17,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 5.125) internal successors, (164), 33 states have internal predecessors, (164), 0 states have call successors, (0), 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 15:43:17,291 INFO L276 IsEmpty]: Start isEmpty. Operand 2752 states and 3215 transitions. [2022-11-23 15:43:17,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-11-23 15:43:17,295 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:43:17,296 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 27, 17, 16, 16, 16, 1, 1, 1] [2022-11-23 15:43:17,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-23 15:43:17,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-23 15:43:17,501 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-23 15:43:17,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:43:17,501 INFO L85 PathProgramCache]: Analyzing trace with hash 345378525, now seen corresponding path program 10 times [2022-11-23 15:43:17,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:43:17,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711373177] [2022-11-23 15:43:17,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:43:17,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:43:17,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:43:17,906 INFO L134 CoverageAnalysis]: Checked inductivity of 2078 backedges. 0 proven. 1391 refuted. 0 times theorem prover too weak. 687 trivial. 0 not checked. [2022-11-23 15:43:17,906 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:43:17,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711373177] [2022-11-23 15:43:17,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711373177] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:43:17,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032160687] [2022-11-23 15:43:17,907 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-23 15:43:17,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:43:17,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:43:17,920 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:43:17,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-23 15:43:17,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:43:17,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-23 15:43:17,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:43:18,599 INFO L134 CoverageAnalysis]: Checked inductivity of 2078 backedges. 934 proven. 1069 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-11-23 15:43:18,599 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:43:19,090 INFO L134 CoverageAnalysis]: Checked inductivity of 2078 backedges. 923 proven. 1080 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-11-23 15:43:19,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032160687] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:43:19,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1400772663] [2022-11-23 15:43:19,092 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-23 15:43:19,092 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:43:19,092 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:43:19,092 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:43:19,093 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:43:19,287 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:43:19,676 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '29033#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (<= |ULTIMATE.start_main_~k~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= 1 |ULTIMATE.start_main_~k~0#1|) (<= 0 |ULTIMATE.start_main_~n~0#1|) (not (<= (+ |ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1|) 2147483647)))' at error location [2022-11-23 15:43:19,676 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:43:19,676 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:43:19,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 23, 23] total 42 [2022-11-23 15:43:19,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542115832] [2022-11-23 15:43:19,677 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:43:19,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-11-23 15:43:19,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:43:19,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-11-23 15:43:19,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=287, Invalid=1969, Unknown=0, NotChecked=0, Total=2256 [2022-11-23 15:43:19,680 INFO L87 Difference]: Start difference. First operand 2752 states and 3215 transitions. Second operand has 42 states, 42 states have (on average 4.785714285714286) internal successors, (201), 42 states have internal predecessors, (201), 0 states have call successors, (0), 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 15:43:33,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:43:33,373 INFO L93 Difference]: Finished difference Result 5456 states and 6401 transitions. [2022-11-23 15:43:33,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 318 states. [2022-11-23 15:43:33,373 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 4.785714285714286) internal successors, (201), 42 states have internal predecessors, (201), 0 states have call successors, (0), 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 151 [2022-11-23 15:43:33,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:43:33,380 INFO L225 Difference]: With dead ends: 5456 [2022-11-23 15:43:33,380 INFO L226 Difference]: Without dead ends: 3391 [2022-11-23 15:43:33,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 771 GetRequests, 412 SyntacticMatches, 8 SemanticMatches, 351 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50577 ImplicationChecksByTransitivity, 12.6s TimeCoverageRelationStatistics Valid=13911, Invalid=110345, Unknown=0, NotChecked=0, Total=124256 [2022-11-23 15:43:33,391 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 484 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1991 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 2187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 1991 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-23 15:43:33,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [484 Valid, 1 Invalid, 2187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 1991 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-23 15:43:33,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3391 states. [2022-11-23 15:43:34,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3391 to 3069. [2022-11-23 15:43:34,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3069 states, 3068 states have (on average 1.1483050847457628) internal successors, (3523), 3068 states have internal predecessors, (3523), 0 states have call successors, (0), 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 15:43:34,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3069 states to 3069 states and 3523 transitions. [2022-11-23 15:43:34,038 INFO L78 Accepts]: Start accepts. Automaton has 3069 states and 3523 transitions. Word has length 151 [2022-11-23 15:43:34,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:43:34,038 INFO L495 AbstractCegarLoop]: Abstraction has 3069 states and 3523 transitions. [2022-11-23 15:43:34,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 4.785714285714286) internal successors, (201), 42 states have internal predecessors, (201), 0 states have call successors, (0), 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 15:43:34,039 INFO L276 IsEmpty]: Start isEmpty. Operand 3069 states and 3523 transitions. [2022-11-23 15:43:34,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-11-23 15:43:34,044 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:43:34,044 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 28, 18, 17, 17, 17, 1, 1, 1] [2022-11-23 15:43:34,056 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-23 15:43:34,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-23 15:43:34,249 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-23 15:43:34,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:43:34,249 INFO L85 PathProgramCache]: Analyzing trace with hash 682014534, now seen corresponding path program 11 times [2022-11-23 15:43:34,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:43:34,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074855364] [2022-11-23 15:43:34,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:43:34,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:43:34,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:43:34,651 INFO L134 CoverageAnalysis]: Checked inductivity of 2272 backedges. 0 proven. 1584 refuted. 0 times theorem prover too weak. 688 trivial. 0 not checked. [2022-11-23 15:43:34,651 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:43:34,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074855364] [2022-11-23 15:43:34,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074855364] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:43:34,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776898421] [2022-11-23 15:43:34,652 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 15:43:34,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:43:34,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:43:34,656 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:43:34,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-23 15:43:34,741 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 26 check-sat command(s) [2022-11-23 15:43:34,741 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:43:34,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-23 15:43:34,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:43:35,266 INFO L134 CoverageAnalysis]: Checked inductivity of 2272 backedges. 976 proven. 1048 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2022-11-23 15:43:35,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:43:36,297 INFO L134 CoverageAnalysis]: Checked inductivity of 2272 backedges. 976 proven. 1048 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2022-11-23 15:43:36,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1776898421] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:43:36,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1751274925] [2022-11-23 15:43:36,298 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-23 15:43:36,299 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:43:36,299 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:43:36,299 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:43:36,299 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:43:36,490 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:43:36,879 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '42394#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (<= |ULTIMATE.start_main_~k~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= 1 |ULTIMATE.start_main_~k~0#1|) (<= 0 |ULTIMATE.start_main_~n~0#1|) (not (<= (+ |ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1|) 2147483647)))' at error location [2022-11-23 15:43:36,879 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:43:36,880 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:43:36,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18, 18] total 50 [2022-11-23 15:43:36,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460053254] [2022-11-23 15:43:36,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:43:36,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-11-23 15:43:36,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:43:36,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-11-23 15:43:36,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=539, Invalid=2653, Unknown=0, NotChecked=0, Total=3192 [2022-11-23 15:43:36,882 INFO L87 Difference]: Start difference. First operand 3069 states and 3523 transitions. Second operand has 51 states, 50 states have (on average 4.96) internal successors, (248), 51 states have internal predecessors, (248), 0 states have call successors, (0), 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 15:44:25,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:44:25,437 INFO L93 Difference]: Finished difference Result 8172 states and 9664 transitions. [2022-11-23 15:44:25,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 527 states. [2022-11-23 15:44:25,438 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 50 states have (on average 4.96) internal successors, (248), 51 states have internal predecessors, (248), 0 states have call successors, (0), 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 15:44:25,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:44:25,450 INFO L225 Difference]: With dead ends: 8172 [2022-11-23 15:44:25,450 INFO L226 Difference]: Without dead ends: 8171 [2022-11-23 15:44:25,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1021 GetRequests, 445 SyntacticMatches, 0 SemanticMatches, 576 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165859 ImplicationChecksByTransitivity, 45.7s TimeCoverageRelationStatistics Valid=67622, Invalid=265884, Unknown=0, NotChecked=0, Total=333506 [2022-11-23 15:44:25,468 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 4235 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 1191 mSolverCounterSat, 1582 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4235 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 2773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1582 IncrementalHoareTripleChecker+Valid, 1191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-23 15:44:25,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4235 Valid, 2 Invalid, 2773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1582 Valid, 1191 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-23 15:44:25,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8171 states. [2022-11-23 15:44:26,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8171 to 3210. [2022-11-23 15:44:26,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3210 states, 3209 states have (on average 1.1542536615768153) internal successors, (3704), 3209 states have internal predecessors, (3704), 0 states have call successors, (0), 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 15:44:26,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3210 states to 3210 states and 3704 transitions. [2022-11-23 15:44:26,211 INFO L78 Accepts]: Start accepts. Automaton has 3210 states and 3704 transitions. Word has length 158 [2022-11-23 15:44:26,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:44:26,212 INFO L495 AbstractCegarLoop]: Abstraction has 3210 states and 3704 transitions. [2022-11-23 15:44:26,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 50 states have (on average 4.96) internal successors, (248), 51 states have internal predecessors, (248), 0 states have call successors, (0), 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 15:44:26,212 INFO L276 IsEmpty]: Start isEmpty. Operand 3210 states and 3704 transitions. [2022-11-23 15:44:26,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-11-23 15:44:26,217 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:44:26,217 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 23, 23, 22, 22, 22, 1, 1, 1] [2022-11-23 15:44:26,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-23 15:44:26,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-23 15:44:26,419 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-23 15:44:26,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:44:26,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1182467787, now seen corresponding path program 12 times [2022-11-23 15:44:26,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:44:26,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183883532] [2022-11-23 15:44:26,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:44:26,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:44:26,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:44:27,271 INFO L134 CoverageAnalysis]: Checked inductivity of 2302 backedges. 0 proven. 2280 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-23 15:44:27,271 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:44:27,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183883532] [2022-11-23 15:44:27,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183883532] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:44:27,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767454974] [2022-11-23 15:44:27,271 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 15:44:27,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:44:27,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:44:27,273 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:44:27,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-23 15:44:27,358 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 15:44:27,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:44:27,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-23 15:44:27,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:44:27,614 INFO L134 CoverageAnalysis]: Checked inductivity of 2302 backedges. 0 proven. 2280 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-23 15:44:27,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:44:28,622 INFO L134 CoverageAnalysis]: Checked inductivity of 2302 backedges. 0 proven. 2280 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-23 15:44:28,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [767454974] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:44:28,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1472480805] [2022-11-23 15:44:28,631 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-23 15:44:28,631 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:44:28,631 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:44:28,631 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:44:28,631 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:44:28,804 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:44:29,124 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '60131#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (<= |ULTIMATE.start_main_~k~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= 1 |ULTIMATE.start_main_~k~0#1|) (<= 0 |ULTIMATE.start_main_~n~0#1|) (not (<= (+ |ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1|) 2147483647)))' at error location [2022-11-23 15:44:29,124 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:44:29,125 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:44:29,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 56 [2022-11-23 15:44:29,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590869316] [2022-11-23 15:44:29,125 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:44:29,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-11-23 15:44:29,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:44:29,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-11-23 15:44:29,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1224, Invalid=2682, Unknown=0, NotChecked=0, Total=3906 [2022-11-23 15:44:29,127 INFO L87 Difference]: Start difference. First operand 3210 states and 3704 transitions. Second operand has 57 states, 56 states have (on average 5.928571428571429) internal successors, (332), 57 states have internal predecessors, (332), 0 states have call successors, (0), 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 15:44:53,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:44:53,770 INFO L93 Difference]: Finished difference Result 41157 states and 49101 transitions. [2022-11-23 15:44:53,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 382 states. [2022-11-23 15:44:53,770 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 56 states have (on average 5.928571428571429) internal successors, (332), 57 states have internal predecessors, (332), 0 states have call successors, (0), 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 163 [2022-11-23 15:44:53,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:44:53,855 INFO L225 Difference]: With dead ends: 41157 [2022-11-23 15:44:53,855 INFO L226 Difference]: Without dead ends: 41156 [2022-11-23 15:44:53,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 846 GetRequests, 453 SyntacticMatches, 0 SemanticMatches, 393 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70032 ImplicationChecksByTransitivity, 14.6s TimeCoverageRelationStatistics Valid=36364, Invalid=119266, Unknown=0, NotChecked=0, Total=155630 [2022-11-23 15:44:53,873 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 1745 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 671 mSolverCounterSat, 449 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1745 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 1120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 449 IncrementalHoareTripleChecker+Valid, 671 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-23 15:44:53,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1745 Valid, 41 Invalid, 1120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [449 Valid, 671 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-23 15:44:53,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41156 states. [2022-11-23 15:44:56,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41156 to 15060. [2022-11-23 15:44:56,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15060 states, 15059 states have (on average 1.1729198485955243) internal successors, (17663), 15059 states have internal predecessors, (17663), 0 states have call successors, (0), 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 15:44:56,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15060 states to 15060 states and 17663 transitions. [2022-11-23 15:44:56,513 INFO L78 Accepts]: Start accepts. Automaton has 15060 states and 17663 transitions. Word has length 163 [2022-11-23 15:44:56,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:44:56,513 INFO L495 AbstractCegarLoop]: Abstraction has 15060 states and 17663 transitions. [2022-11-23 15:44:56,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 56 states have (on average 5.928571428571429) internal successors, (332), 57 states have internal predecessors, (332), 0 states have call successors, (0), 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 15:44:56,514 INFO L276 IsEmpty]: Start isEmpty. Operand 15060 states and 17663 transitions. [2022-11-23 15:44:56,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2022-11-23 15:44:56,536 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:44:56,536 INFO L195 NwaCegarLoop]: trace histogram [54, 54, 53, 31, 30, 30, 30, 1, 1, 1] [2022-11-23 15:44:56,547 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-23 15:44:56,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:44:56,746 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-23 15:44:56,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:44:56,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1793981971, now seen corresponding path program 13 times [2022-11-23 15:44:56,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:44:56,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801004520] [2022-11-23 15:44:56,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:44:56,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:44:56,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:44:57,513 INFO L134 CoverageAnalysis]: Checked inductivity of 7683 backedges. 0 proven. 3574 refuted. 0 times theorem prover too weak. 4109 trivial. 0 not checked. [2022-11-23 15:44:57,513 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:44:57,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801004520] [2022-11-23 15:44:57,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801004520] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:44:57,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431094361] [2022-11-23 15:44:57,513 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-23 15:44:57,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:44:57,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:44:57,515 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:44:57,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-23 15:44:57,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:44:57,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-23 15:44:57,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:44:58,465 INFO L134 CoverageAnalysis]: Checked inductivity of 7683 backedges. 4518 proven. 1688 refuted. 0 times theorem prover too weak. 1477 trivial. 0 not checked. [2022-11-23 15:44:58,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:44:59,175 INFO L134 CoverageAnalysis]: Checked inductivity of 7683 backedges. 4503 proven. 1703 refuted. 0 times theorem prover too weak. 1477 trivial. 0 not checked. [2022-11-23 15:44:59,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431094361] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:44:59,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1503933392] [2022-11-23 15:44:59,176 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-23 15:44:59,177 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:44:59,177 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:44:59,177 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:44:59,177 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:44:59,342 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:45:02,238 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '139936#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (<= |ULTIMATE.start_main_~k~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~j~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~n~0#1|) (not (<= (+ |ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1|) 2147483647)))' at error location [2022-11-23 15:45:02,238 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:45:02,239 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:45:02,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 27, 27] total 48 [2022-11-23 15:45:02,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428687643] [2022-11-23 15:45:02,239 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:45:02,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-23 15:45:02,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:45:02,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-23 15:45:02,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=397, Invalid=2573, Unknown=0, NotChecked=0, Total=2970 [2022-11-23 15:45:02,241 INFO L87 Difference]: Start difference. First operand 15060 states and 17663 transitions. Second operand has 48 states, 48 states have (on average 5.0625) internal successors, (243), 48 states have internal predecessors, (243), 0 states have call successors, (0), 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 15:45:27,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:45:27,925 INFO L93 Difference]: Finished difference Result 29026 states and 34179 transitions. [2022-11-23 15:45:27,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 513 states. [2022-11-23 15:45:27,926 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 5.0625) internal successors, (243), 48 states have internal predecessors, (243), 0 states have call successors, (0), 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 285 [2022-11-23 15:45:27,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:45:27,959 INFO L225 Difference]: With dead ends: 29026 [2022-11-23 15:45:27,959 INFO L226 Difference]: Without dead ends: 15795 [2022-11-23 15:45:27,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1368 GetRequests, 777 SyntacticMatches, 40 SemanticMatches, 551 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135174 ImplicationChecksByTransitivity, 24.6s TimeCoverageRelationStatistics Valid=32050, Invalid=273206, Unknown=0, NotChecked=0, Total=305256 [2022-11-23 15:45:27,994 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 547 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2809 mSolverCounterSat, 244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 547 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 3053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Valid, 2809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-23 15:45:27,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [547 Valid, 1 Invalid, 3053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [244 Valid, 2809 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-23 15:45:28,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15795 states. [2022-11-23 15:45:30,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15795 to 15085. [2022-11-23 15:45:30,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15085 states, 15084 states have (on average 1.168854415274463) internal successors, (17631), 15084 states have internal predecessors, (17631), 0 states have call successors, (0), 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 15:45:30,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15085 states to 15085 states and 17631 transitions. [2022-11-23 15:45:30,168 INFO L78 Accepts]: Start accepts. Automaton has 15085 states and 17631 transitions. Word has length 285 [2022-11-23 15:45:30,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:45:30,168 INFO L495 AbstractCegarLoop]: Abstraction has 15085 states and 17631 transitions. [2022-11-23 15:45:30,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 5.0625) internal successors, (243), 48 states have internal predecessors, (243), 0 states have call successors, (0), 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 15:45:30,169 INFO L276 IsEmpty]: Start isEmpty. Operand 15085 states and 17631 transitions. [2022-11-23 15:45:30,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2022-11-23 15:45:30,185 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:45:30,185 INFO L195 NwaCegarLoop]: trace histogram [55, 55, 54, 32, 31, 31, 31, 1, 1, 1] [2022-11-23 15:45:30,195 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-23 15:45:30,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:45:30,391 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-23 15:45:30,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:45:30,391 INFO L85 PathProgramCache]: Analyzing trace with hash 992962454, now seen corresponding path program 14 times [2022-11-23 15:45:30,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:45:30,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256576521] [2022-11-23 15:45:30,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:45:30,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:45:30,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:45:31,001 INFO L134 CoverageAnalysis]: Checked inductivity of 8051 backedges. 0 proven. 3941 refuted. 0 times theorem prover too weak. 4110 trivial. 0 not checked. [2022-11-23 15:45:31,001 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:45:31,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256576521] [2022-11-23 15:45:31,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256576521] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:45:31,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61676930] [2022-11-23 15:45:31,001 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 15:45:31,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:45:31,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:45:31,006 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:45:31,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-23 15:45:31,177 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 54 check-sat command(s) [2022-11-23 15:45:31,177 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:45:31,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-23 15:45:31,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:45:32,266 INFO L134 CoverageAnalysis]: Checked inductivity of 8051 backedges. 2668 proven. 4936 refuted. 0 times theorem prover too weak. 447 trivial. 0 not checked. [2022-11-23 15:45:32,267 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:45:34,805 INFO L134 CoverageAnalysis]: Checked inductivity of 8051 backedges. 2668 proven. 4936 refuted. 0 times theorem prover too weak. 447 trivial. 0 not checked. [2022-11-23 15:45:34,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [61676930] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:45:34,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [23677360] [2022-11-23 15:45:34,806 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-23 15:45:34,807 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:45:34,807 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:45:34,807 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:45:34,807 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:45:34,928 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:45:38,222 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '203788#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (<= |ULTIMATE.start_main_~k~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~j~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~n~0#1|) (not (<= (+ |ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1|) 2147483647)))' at error location [2022-11-23 15:45:38,222 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:45:38,222 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:45:38,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 30, 30] total 76 [2022-11-23 15:45:38,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908937008] [2022-11-23 15:45:38,222 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:45:38,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2022-11-23 15:45:38,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:45:38,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2022-11-23 15:45:38,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1620, Invalid=5352, Unknown=0, NotChecked=0, Total=6972 [2022-11-23 15:45:38,224 INFO L87 Difference]: Start difference. First operand 15085 states and 17631 transitions. Second operand has 77 states, 76 states have (on average 5.657894736842105) internal successors, (430), 77 states have internal predecessors, (430), 0 states have call successors, (0), 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 15:48:26,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:48:26,925 INFO L93 Difference]: Finished difference Result 49637 states and 59280 transitions. [2022-11-23 15:48:26,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1082 states. [2022-11-23 15:48:26,925 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 76 states have (on average 5.657894736842105) internal successors, (430), 77 states have internal predecessors, (430), 0 states have call successors, (0), 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 292 [2022-11-23 15:48:26,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:48:27,000 INFO L225 Difference]: With dead ends: 49637 [2022-11-23 15:48:27,000 INFO L226 Difference]: Without dead ends: 49636 [2022-11-23 15:48:27,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1992 GetRequests, 803 SyntacticMatches, 31 SemanticMatches, 1158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 720945 ImplicationChecksByTransitivity, 155.9s TimeCoverageRelationStatistics Valid=285051, Invalid=1059389, Unknown=0, NotChecked=0, Total=1344440 [2022-11-23 15:48:27,114 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 7140 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 1927 mSolverCounterSat, 3649 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7140 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 5576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3649 IncrementalHoareTripleChecker+Valid, 1927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-23 15:48:27,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7140 Valid, 2 Invalid, 5576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3649 Valid, 1927 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-23 15:48:27,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49636 states. [2022-11-23 15:48:32,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49636 to 18759. [2022-11-23 15:48:32,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18759 states, 18758 states have (on average 1.1704339481821089) internal successors, (21955), 18758 states have internal predecessors, (21955), 0 states have call successors, (0), 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 15:48:32,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18759 states to 18759 states and 21955 transitions. [2022-11-23 15:48:32,521 INFO L78 Accepts]: Start accepts. Automaton has 18759 states and 21955 transitions. Word has length 292 [2022-11-23 15:48:32,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:48:32,522 INFO L495 AbstractCegarLoop]: Abstraction has 18759 states and 21955 transitions. [2022-11-23 15:48:32,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 76 states have (on average 5.657894736842105) internal successors, (430), 77 states have internal predecessors, (430), 0 states have call successors, (0), 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 15:48:32,522 INFO L276 IsEmpty]: Start isEmpty. Operand 18759 states and 21955 transitions. [2022-11-23 15:48:32,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2022-11-23 15:48:32,538 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:48:32,539 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 47, 47, 46, 46, 46, 1, 1, 1] [2022-11-23 15:48:32,547 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-23 15:48:32,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:48:32,743 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-23 15:48:32,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:48:32,744 INFO L85 PathProgramCache]: Analyzing trace with hash 899647413, now seen corresponding path program 15 times [2022-11-23 15:48:32,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:48:32,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845870105] [2022-11-23 15:48:32,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:48:32,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:48:32,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:48:35,225 INFO L134 CoverageAnalysis]: Checked inductivity of 9778 backedges. 0 proven. 9732 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-23 15:48:35,225 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:48:35,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845870105] [2022-11-23 15:48:35,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845870105] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:48:35,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965436367] [2022-11-23 15:48:35,226 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 15:48:35,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:48:35,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:48:35,227 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:48:35,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60e16828-f20f-472b-ade7-53b0f63f79d2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-23 15:48:35,346 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 15:48:35,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:48:35,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 622 conjuncts, 51 conjunts are in the unsatisfiable core [2022-11-23 15:48:35,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:48:35,899 INFO L134 CoverageAnalysis]: Checked inductivity of 9778 backedges. 0 proven. 9732 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-23 15:48:35,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:48:39,231 INFO L134 CoverageAnalysis]: Checked inductivity of 9778 backedges. 0 proven. 9732 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-23 15:48:39,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965436367] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:48:39,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [413109214] [2022-11-23 15:48:39,236 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-23 15:48:39,236 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:48:39,236 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:48:39,237 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:48:39,237 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:48:39,359 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:48:43,800 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '302216#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (<= |ULTIMATE.start_main_~k~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~j~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~n~0#1|) (not (<= (+ |ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1|) 2147483647)))' at error location [2022-11-23 15:48:43,800 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:48:43,801 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:48:43,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51, 51] total 104 [2022-11-23 15:48:43,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361570896] [2022-11-23 15:48:43,801 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:48:43,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 105 states [2022-11-23 15:48:43,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:48:43,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2022-11-23 15:48:43,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4718, Invalid=7714, Unknown=0, NotChecked=0, Total=12432 [2022-11-23 15:48:43,806 INFO L87 Difference]: Start difference. First operand 18759 states and 21955 transitions. Second operand has 105 states, 104 states have (on average 6.423076923076923) internal successors, (668), 105 states have internal predecessors, (668), 0 states have call successors, (0), 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 15:51:35,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:51:35,748 INFO L93 Difference]: Finished difference Result 215402 states and 257943 transitions. [2022-11-23 15:51:35,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 790 states. [2022-11-23 15:51:35,749 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 104 states have (on average 6.423076923076923) internal successors, (668), 105 states have internal predecessors, (668), 0 states have call successors, (0), 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 331 [2022-11-23 15:51:35,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:51:36,163 INFO L225 Difference]: With dead ends: 215402 [2022-11-23 15:51:36,163 INFO L226 Difference]: Without dead ends: 215401 [2022-11-23 15:51:36,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1734 GetRequests, 886 SyntacticMatches, 46 SemanticMatches, 802 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308196 ImplicationChecksByTransitivity, 56.5s TimeCoverageRelationStatistics Valid=151614, Invalid=493998, Unknown=0, NotChecked=0, Total=645612 [2022-11-23 15:51:36,266 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 2322 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 1286 mSolverCounterSat, 699 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2322 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 1985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 699 IncrementalHoareTripleChecker+Valid, 1286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-23 15:51:36,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2322 Valid, 70 Invalid, 1985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [699 Valid, 1286 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-23 15:51:36,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215401 states.