./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound50.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound50.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E --witnessprinter.witness.filename witness --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 32bit --witnessprinter.graph.data.programhash 7aff0c23635f1e1acd85672a1024d6cb6d0af57cad0028c56f5d301198b4eae6 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 04:10:03,280 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 04:10:03,407 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Overflow-32bit-Taipan_Default.epf [2024-11-14 04:10:03,420 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 04:10:03,421 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 04:10:03,465 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 04:10:03,467 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 04:10:03,468 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 04:10:03,468 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 04:10:03,469 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 04:10:03,470 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 04:10:03,470 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 04:10:03,471 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 04:10:03,471 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 04:10:03,471 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 04:10:03,471 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 04:10:03,471 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 04:10:03,471 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 04:10:03,471 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 04:10:03,471 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 04:10:03,472 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 04:10:03,473 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 04:10:03,473 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 04:10:03,473 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 04:10:03,474 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 04:10:03,474 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 04:10:03,474 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 04:10:03,474 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 04:10:03,475 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 04:10:03,475 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 04:10:03,475 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 04:10:03,475 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 04:10:03,475 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-14 04:10:03,475 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-14 04:10:03,476 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 04:10:03,476 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 04:10:03,477 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 04:10:03,477 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 04:10:03,477 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 04:10:03,477 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 04:10:03,477 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:10:03,478 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 04:10:03,478 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 04:10:03,478 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 04:10:03,478 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 04:10:03,478 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 04:10:03,478 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 04:10:03,478 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 04:10:03,479 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 04:10:03,479 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness 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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7aff0c23635f1e1acd85672a1024d6cb6d0af57cad0028c56f5d301198b4eae6 [2024-11-14 04:10:03,844 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 04:10:03,861 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 04:10:03,866 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 04:10:03,868 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 04:10:03,868 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 04:10:03,870 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound50.c Unable to find full path for "g++" [2024-11-14 04:10:05,934 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 04:10:06,283 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 04:10:06,284 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound50.c [2024-11-14 04:10:06,303 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/data/285b1481c/f8ee4a9015c24322892f990a4004f5c6/FLAG8794f6cca [2024-11-14 04:10:06,364 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/data/285b1481c/f8ee4a9015c24322892f990a4004f5c6 [2024-11-14 04:10:06,373 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 04:10:06,379 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 04:10:06,384 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 04:10:06,389 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 04:10:06,395 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 04:10:06,396 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:10:06" (1/1) ... [2024-11-14 04:10:06,400 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7791418b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:10:06, skipping insertion in model container [2024-11-14 04:10:06,401 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:10:06" (1/1) ... [2024-11-14 04:10:06,419 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 04:10:06,648 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:10:06,663 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 04:10:06,685 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:10:06,701 INFO L204 MainTranslator]: Completed translation [2024-11-14 04:10:06,701 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:10:06 WrapperNode [2024-11-14 04:10:06,702 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 04:10:06,704 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 04:10:06,704 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 04:10:06,704 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 04:10:06,712 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:10:06" (1/1) ... [2024-11-14 04:10:06,719 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:10:06" (1/1) ... [2024-11-14 04:10:06,739 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 75 [2024-11-14 04:10:06,739 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 04:10:06,742 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 04:10:06,743 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 04:10:06,743 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 04:10:06,751 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:10:06" (1/1) ... [2024-11-14 04:10:06,751 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:10:06" (1/1) ... [2024-11-14 04:10:06,752 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:10:06" (1/1) ... [2024-11-14 04:10:06,753 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:10:06" (1/1) ... [2024-11-14 04:10:06,758 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:10:06" (1/1) ... [2024-11-14 04:10:06,766 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:10:06" (1/1) ... [2024-11-14 04:10:06,766 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:10:06" (1/1) ... [2024-11-14 04:10:06,767 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:10:06" (1/1) ... [2024-11-14 04:10:06,769 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 04:10:06,769 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 04:10:06,770 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 04:10:06,770 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 04:10:06,771 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:10:06" (1/1) ... [2024-11-14 04:10:06,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:10:06,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:10:06,802 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 04:10:06,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 04:10:06,833 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 04:10:06,833 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-14 04:10:06,833 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-14 04:10:06,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 04:10:06,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 04:10:06,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 04:10:06,834 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-14 04:10:06,834 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-14 04:10:06,914 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 04:10:06,916 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 04:10:07,281 INFO L? ?]: Removed 47 outVars from TransFormulas that were not future-live. [2024-11-14 04:10:07,285 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 04:10:07,346 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 04:10:07,347 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-14 04:10:07,348 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:10:07 BoogieIcfgContainer [2024-11-14 04:10:07,348 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 04:10:07,352 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 04:10:07,352 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 04:10:07,358 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 04:10:07,361 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 04:10:06" (1/3) ... [2024-11-14 04:10:07,362 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32fd171f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:10:07, skipping insertion in model container [2024-11-14 04:10:07,362 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:10:06" (2/3) ... [2024-11-14 04:10:07,363 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32fd171f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:10:07, skipping insertion in model container [2024-11-14 04:10:07,363 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:10:07" (3/3) ... [2024-11-14 04:10:07,364 INFO L112 eAbstractionObserver]: Analyzing ICFG mannadiv_unwindbound50.c [2024-11-14 04:10:07,385 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 04:10:07,387 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG mannadiv_unwindbound50.c that has 3 procedures, 60 locations, 1 initial locations, 1 loop locations, and 22 error locations. [2024-11-14 04:10:07,462 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 04:10:07,483 INFO L333 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, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@49eca7e1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 04:10:07,484 INFO L334 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2024-11-14 04:10:07,490 INFO L276 IsEmpty]: Start isEmpty. Operand has 60 states, 31 states have (on average 1.8387096774193548) internal successors, (57), 53 states have internal predecessors, (57), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-14 04:10:07,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-14 04:10:07,500 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:10:07,501 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:10:07,502 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-14 04:10:07,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:10:07,509 INFO L85 PathProgramCache]: Analyzing trace with hash -785863208, now seen corresponding path program 1 times [2024-11-14 04:10:07,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:10:07,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992848750] [2024-11-14 04:10:07,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:10:07,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:10:07,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:10:07,726 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 04:10:07,727 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:10:07,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992848750] [2024-11-14 04:10:07,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992848750] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:10:07,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:10:07,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 04:10:07,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340182901] [2024-11-14 04:10:07,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:10:07,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-14 04:10:07,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:10:07,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-14 04:10:07,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-14 04:10:07,771 INFO L87 Difference]: Start difference. First operand has 60 states, 31 states have (on average 1.8387096774193548) internal successors, (57), 53 states have internal predecessors, (57), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 04:10:07,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:10:07,823 INFO L93 Difference]: Finished difference Result 73 states and 77 transitions. [2024-11-14 04:10:07,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-14 04:10:07,826 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 10 [2024-11-14 04:10:07,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:10:07,835 INFO L225 Difference]: With dead ends: 73 [2024-11-14 04:10:07,835 INFO L226 Difference]: Without dead ends: 57 [2024-11-14 04:10:07,839 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-14 04:10:07,848 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 04:10:07,849 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 60 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 04:10:07,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-14 04:10:07,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2024-11-14 04:10:07,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 30 states have (on average 1.8) internal successors, (54), 51 states have internal predecessors, (54), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 04:10:07,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 60 transitions. [2024-11-14 04:10:07,908 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 60 transitions. Word has length 10 [2024-11-14 04:10:07,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:10:07,909 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 60 transitions. [2024-11-14 04:10:07,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 04:10:07,910 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 60 transitions. [2024-11-14 04:10:07,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-14 04:10:07,911 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:10:07,912 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:10:07,912 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 04:10:07,912 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-14 04:10:07,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:10:07,913 INFO L85 PathProgramCache]: Analyzing trace with hash -785864969, now seen corresponding path program 1 times [2024-11-14 04:10:07,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:10:07,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773618893] [2024-11-14 04:10:07,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:10:07,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:10:07,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:10:08,116 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 04:10:08,116 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:10:08,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773618893] [2024-11-14 04:10:08,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773618893] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:10:08,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:10:08,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:10:08,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084570617] [2024-11-14 04:10:08,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:10:08,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 04:10:08,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:10:08,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 04:10:08,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:10:08,123 INFO L87 Difference]: Start difference. First operand 57 states and 60 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 04:10:08,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:10:08,218 INFO L93 Difference]: Finished difference Result 71 states and 74 transitions. [2024-11-14 04:10:08,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 04:10:08,219 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 10 [2024-11-14 04:10:08,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:10:08,220 INFO L225 Difference]: With dead ends: 71 [2024-11-14 04:10:08,220 INFO L226 Difference]: Without dead ends: 61 [2024-11-14 04:10:08,221 INFO L431 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 [2024-11-14 04:10:08,222 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 7 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:10:08,222 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 152 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:10:08,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-14 04:10:08,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2024-11-14 04:10:08,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 55 states have internal predecessors, (58), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 04:10:08,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 64 transitions. [2024-11-14 04:10:08,241 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 64 transitions. Word has length 10 [2024-11-14 04:10:08,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:10:08,241 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 64 transitions. [2024-11-14 04:10:08,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 04:10:08,241 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 64 transitions. [2024-11-14 04:10:08,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-14 04:10:08,242 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:10:08,242 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:10:08,242 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-14 04:10:08,243 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-14 04:10:08,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:10:08,243 INFO L85 PathProgramCache]: Analyzing trace with hash 163481878, now seen corresponding path program 1 times [2024-11-14 04:10:08,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:10:08,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507881556] [2024-11-14 04:10:08,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:10:08,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:10:08,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 04:10:08,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1216059689] [2024-11-14 04:10:08,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:10:08,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:10:08,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:10:08,287 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:10:08,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 04:10:08,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:10:08,379 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 04:10:08,386 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:10:08,417 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 04:10:08,417 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:10:08,417 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:10:08,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507881556] [2024-11-14 04:10:08,418 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 04:10:08,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216059689] [2024-11-14 04:10:08,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216059689] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:10:08,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:10:08,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 04:10:08,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373150629] [2024-11-14 04:10:08,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:10:08,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:10:08,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:10:08,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:10:08,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:10:08,420 INFO L87 Difference]: Start difference. First operand 61 states and 64 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 04:10:08,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:10:08,604 INFO L93 Difference]: Finished difference Result 100 states and 112 transitions. [2024-11-14 04:10:08,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:10:08,607 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 13 [2024-11-14 04:10:08,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:10:08,608 INFO L225 Difference]: With dead ends: 100 [2024-11-14 04:10:08,608 INFO L226 Difference]: Without dead ends: 94 [2024-11-14 04:10:08,609 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:10:08,613 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 29 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 04:10:08,613 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 73 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 04:10:08,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-11-14 04:10:08,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 84. [2024-11-14 04:10:08,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 56 states have (on average 1.6964285714285714) internal successors, (95), 77 states have internal predecessors, (95), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-14 04:10:08,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 103 transitions. [2024-11-14 04:10:08,634 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 103 transitions. Word has length 13 [2024-11-14 04:10:08,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:10:08,634 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 103 transitions. [2024-11-14 04:10:08,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 04:10:08,634 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 103 transitions. [2024-11-14 04:10:08,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-14 04:10:08,635 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:10:08,635 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:10:08,654 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-14 04:10:08,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:10:08,836 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-14 04:10:08,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:10:08,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1807703528, now seen corresponding path program 1 times [2024-11-14 04:10:08,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:10:08,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480132543] [2024-11-14 04:10:08,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:10:08,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:10:08,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:10:08,936 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 04:10:08,936 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:10:08,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480132543] [2024-11-14 04:10:08,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480132543] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:10:08,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:10:08,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:10:08,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492688307] [2024-11-14 04:10:08,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:10:08,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 04:10:08,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:10:08,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 04:10:08,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:10:08,938 INFO L87 Difference]: Start difference. First operand 84 states and 103 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 04:10:09,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:10:09,249 INFO L93 Difference]: Finished difference Result 134 states and 171 transitions. [2024-11-14 04:10:09,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 04:10:09,250 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 15 [2024-11-14 04:10:09,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:10:09,252 INFO L225 Difference]: With dead ends: 134 [2024-11-14 04:10:09,252 INFO L226 Difference]: Without dead ends: 127 [2024-11-14 04:10:09,252 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:10:09,253 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 42 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 04:10:09,254 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 80 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 04:10:09,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-11-14 04:10:09,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 120. [2024-11-14 04:10:09,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 90 states have (on average 1.6222222222222222) internal successors, (146), 111 states have internal predecessors, (146), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-14 04:10:09,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 158 transitions. [2024-11-14 04:10:09,270 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 158 transitions. Word has length 15 [2024-11-14 04:10:09,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:10:09,270 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 158 transitions. [2024-11-14 04:10:09,270 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 04:10:09,271 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 158 transitions. [2024-11-14 04:10:09,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-14 04:10:09,271 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:10:09,271 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:10:09,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-14 04:10:09,271 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-14 04:10:09,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:10:09,272 INFO L85 PathProgramCache]: Analyzing trace with hash -204234464, now seen corresponding path program 1 times [2024-11-14 04:10:09,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:10:09,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738485727] [2024-11-14 04:10:09,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:10:09,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:10:09,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:10:09,414 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 04:10:09,414 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:10:09,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738485727] [2024-11-14 04:10:09,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738485727] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:10:09,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:10:09,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:10:09,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87486736] [2024-11-14 04:10:09,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:10:09,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 04:10:09,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:10:09,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 04:10:09,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:10:09,416 INFO L87 Difference]: Start difference. First operand 120 states and 158 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 04:10:09,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:10:09,712 INFO L93 Difference]: Finished difference Result 131 states and 161 transitions. [2024-11-14 04:10:09,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 04:10:09,716 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2024-11-14 04:10:09,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:10:09,717 INFO L225 Difference]: With dead ends: 131 [2024-11-14 04:10:09,717 INFO L226 Difference]: Without dead ends: 122 [2024-11-14 04:10:09,718 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:10:09,722 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 42 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 04:10:09,722 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 84 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 04:10:09,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-14 04:10:09,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 116. [2024-11-14 04:10:09,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 86 states have (on average 1.5930232558139534) internal successors, (137), 107 states have internal predecessors, (137), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-14 04:10:09,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 149 transitions. [2024-11-14 04:10:09,738 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 149 transitions. Word has length 16 [2024-11-14 04:10:09,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:10:09,738 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 149 transitions. [2024-11-14 04:10:09,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 04:10:09,738 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 149 transitions. [2024-11-14 04:10:09,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-14 04:10:09,739 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:10:09,739 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:10:09,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-14 04:10:09,739 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-14 04:10:09,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:10:09,740 INFO L85 PathProgramCache]: Analyzing trace with hash -2036301030, now seen corresponding path program 1 times [2024-11-14 04:10:09,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:10:09,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898808367] [2024-11-14 04:10:09,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:10:09,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:10:09,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:10:09,934 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 04:10:09,935 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:10:09,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898808367] [2024-11-14 04:10:09,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898808367] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:10:09,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304504786] [2024-11-14 04:10:09,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:10:09,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:10:09,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:10:09,945 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:10:09,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-14 04:10:10,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:10:10,016 INFO L255 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-14 04:10:10,018 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:10:10,281 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 04:10:10,281 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:10:10,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1304504786] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:10:10,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:10:10,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-14 04:10:10,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091980556] [2024-11-14 04:10:10,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:10:10,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 04:10:10,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:10:10,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 04:10:10,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-14 04:10:10,283 INFO L87 Difference]: Start difference. First operand 116 states and 149 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 04:10:10,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:10:10,471 INFO L93 Difference]: Finished difference Result 119 states and 153 transitions. [2024-11-14 04:10:10,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 04:10:10,472 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2024-11-14 04:10:10,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:10:10,473 INFO L225 Difference]: With dead ends: 119 [2024-11-14 04:10:10,474 INFO L226 Difference]: Without dead ends: 118 [2024-11-14 04:10:10,474 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-14 04:10:10,475 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 81 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:10:10,476 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 54 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:10:10,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2024-11-14 04:10:10,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 116. [2024-11-14 04:10:10,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 86 states have (on average 1.5813953488372092) internal successors, (136), 107 states have internal predecessors, (136), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-14 04:10:10,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 148 transitions. [2024-11-14 04:10:10,492 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 148 transitions. Word has length 17 [2024-11-14 04:10:10,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:10:10,496 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 148 transitions. [2024-11-14 04:10:10,496 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 04:10:10,497 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 148 transitions. [2024-11-14 04:10:10,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-14 04:10:10,497 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:10:10,497 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:10:10,523 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-14 04:10:10,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:10:10,704 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-14 04:10:10,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:10:10,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1299177570, now seen corresponding path program 1 times [2024-11-14 04:10:10,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:10:10,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378105667] [2024-11-14 04:10:10,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:10:10,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:10:10,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 04:10:10,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [272851745] [2024-11-14 04:10:10,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:10:10,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:10:10,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:10:10,742 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:10:10,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-14 04:10:10,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:10:10,795 INFO L255 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-14 04:10:10,797 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:10:10,955 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 04:10:10,955 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:10:10,956 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:10:10,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378105667] [2024-11-14 04:10:10,956 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 04:10:10,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272851745] [2024-11-14 04:10:10,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [272851745] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:10:10,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:10:10,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:10:10,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95442682] [2024-11-14 04:10:10,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:10:10,957 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 04:10:10,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:10:10,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 04:10:10,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:10:10,958 INFO L87 Difference]: Start difference. First operand 116 states and 148 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 04:10:11,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:10:11,110 INFO L93 Difference]: Finished difference Result 117 states and 148 transitions. [2024-11-14 04:10:11,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 04:10:11,112 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2024-11-14 04:10:11,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:10:11,113 INFO L225 Difference]: With dead ends: 117 [2024-11-14 04:10:11,113 INFO L226 Difference]: Without dead ends: 116 [2024-11-14 04:10:11,113 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:10:11,114 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 74 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:10:11,114 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 59 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:10:11,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-11-14 04:10:11,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2024-11-14 04:10:11,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 86 states have (on average 1.569767441860465) internal successors, (135), 107 states have internal predecessors, (135), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-14 04:10:11,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 147 transitions. [2024-11-14 04:10:11,133 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 147 transitions. Word has length 18 [2024-11-14 04:10:11,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:10:11,133 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 147 transitions. [2024-11-14 04:10:11,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 04:10:11,134 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 147 transitions. [2024-11-14 04:10:11,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-14 04:10:11,135 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:10:11,135 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:10:11,156 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-14 04:10:11,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-14 04:10:11,339 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-14 04:10:11,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:10:11,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1989034831, now seen corresponding path program 1 times [2024-11-14 04:10:11,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:10:11,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462985662] [2024-11-14 04:10:11,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:10:11,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:10:11,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:10:11,498 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 04:10:11,498 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:10:11,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462985662] [2024-11-14 04:10:11,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462985662] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:10:11,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515531547] [2024-11-14 04:10:11,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:10:11,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:10:11,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:10:11,503 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:10:11,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-14 04:10:11,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:10:11,559 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 04:10:11,561 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:10:11,612 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 04:10:11,613 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:10:11,753 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 04:10:11,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1515531547] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:10:11,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1334779002] [2024-11-14 04:10:11,779 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2024-11-14 04:10:11,779 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:10:11,783 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:10:11,791 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:10:11,793 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:10:12,621 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 46 for LOIs [2024-11-14 04:10:12,646 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 65 for LOIs [2024-11-14 04:10:12,707 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:10:14,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1334779002] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:10:14,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:10:14,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [4, 4, 4] total 19 [2024-11-14 04:10:14,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367901174] [2024-11-14 04:10:14,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:10:14,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-14 04:10:14,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:10:14,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-14 04:10:14,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2024-11-14 04:10:14,610 INFO L87 Difference]: Start difference. First operand 116 states and 147 transitions. Second operand has 15 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 04:10:15,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:10:15,372 INFO L93 Difference]: Finished difference Result 122 states and 152 transitions. [2024-11-14 04:10:15,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-14 04:10:15,373 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 28 [2024-11-14 04:10:15,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:10:15,374 INFO L225 Difference]: With dead ends: 122 [2024-11-14 04:10:15,374 INFO L226 Difference]: Without dead ends: 120 [2024-11-14 04:10:15,375 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 65 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2024-11-14 04:10:15,376 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 1 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-14 04:10:15,376 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 145 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-14 04:10:15,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2024-11-14 04:10:15,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2024-11-14 04:10:15,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 89 states have (on average 1.550561797752809) internal successors, (138), 110 states have internal predecessors, (138), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-14 04:10:15,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 150 transitions. [2024-11-14 04:10:15,398 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 150 transitions. Word has length 28 [2024-11-14 04:10:15,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:10:15,398 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 150 transitions. [2024-11-14 04:10:15,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 04:10:15,398 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 150 transitions. [2024-11-14 04:10:15,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-14 04:10:15,407 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:10:15,407 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:10:15,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-14 04:10:15,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:10:15,612 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-14 04:10:15,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:10:15,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1988726991, now seen corresponding path program 1 times [2024-11-14 04:10:15,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:10:15,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271835075] [2024-11-14 04:10:15,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:10:15,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:10:15,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:10:15,730 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 04:10:15,730 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:10:15,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271835075] [2024-11-14 04:10:15,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271835075] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:10:15,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328949112] [2024-11-14 04:10:15,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:10:15,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:10:15,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:10:15,733 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:10:15,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-14 04:10:15,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:10:15,796 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 04:10:15,798 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:10:15,846 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 04:10:15,846 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:10:15,940 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 04:10:15,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328949112] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:10:15,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1980505193] [2024-11-14 04:10:15,946 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2024-11-14 04:10:15,946 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:10:15,947 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:10:15,947 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:10:15,947 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:10:16,396 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 46 for LOIs [2024-11-14 04:10:16,407 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 65 for LOIs [2024-11-14 04:10:16,433 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:10:18,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1980505193] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:10:18,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:10:18,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [4, 4, 4] total 19 [2024-11-14 04:10:18,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864830909] [2024-11-14 04:10:18,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:10:18,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-14 04:10:18,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:10:18,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-14 04:10:18,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2024-11-14 04:10:18,014 INFO L87 Difference]: Start difference. First operand 120 states and 150 transitions. Second operand has 15 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 04:10:18,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:10:18,849 INFO L93 Difference]: Finished difference Result 126 states and 156 transitions. [2024-11-14 04:10:18,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-14 04:10:18,849 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 28 [2024-11-14 04:10:18,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:10:18,850 INFO L225 Difference]: With dead ends: 126 [2024-11-14 04:10:18,850 INFO L226 Difference]: Without dead ends: 124 [2024-11-14 04:10:18,851 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 65 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2024-11-14 04:10:18,852 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 3 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-14 04:10:18,852 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 175 Invalid, 536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 535 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-14 04:10:18,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2024-11-14 04:10:18,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2024-11-14 04:10:18,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 93 states have (on average 1.5268817204301075) internal successors, (142), 114 states have internal predecessors, (142), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-14 04:10:18,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 154 transitions. [2024-11-14 04:10:18,866 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 154 transitions. Word has length 28 [2024-11-14 04:10:18,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:10:18,866 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 154 transitions. [2024-11-14 04:10:18,866 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 04:10:18,867 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 154 transitions. [2024-11-14 04:10:18,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-14 04:10:18,867 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:10:18,868 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:10:18,892 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-14 04:10:19,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:10:19,072 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-14 04:10:19,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:10:19,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1967923406, now seen corresponding path program 1 times [2024-11-14 04:10:19,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:10:19,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091749372] [2024-11-14 04:10:19,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:10:19,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:10:19,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:10:19,195 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 04:10:19,195 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:10:19,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091749372] [2024-11-14 04:10:19,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091749372] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:10:19,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239654882] [2024-11-14 04:10:19,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:10:19,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:10:19,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:10:19,203 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:10:19,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-14 04:10:19,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:10:19,259 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 04:10:19,261 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:10:19,346 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 04:10:19,346 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:10:19,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [239654882] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:10:19,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:10:19,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-11-14 04:10:19,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228972457] [2024-11-14 04:10:19,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:10:19,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 04:10:19,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:10:19,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 04:10:19,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-14 04:10:19,352 INFO L87 Difference]: Start difference. First operand 124 states and 154 transitions. Second operand has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 04:10:19,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:10:19,399 INFO L93 Difference]: Finished difference Result 124 states and 154 transitions. [2024-11-14 04:10:19,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 04:10:19,400 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 31 [2024-11-14 04:10:19,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:10:19,401 INFO L225 Difference]: With dead ends: 124 [2024-11-14 04:10:19,401 INFO L226 Difference]: Without dead ends: 123 [2024-11-14 04:10:19,403 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-14 04:10:19,407 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 42 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 04:10:19,408 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 100 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 04:10:19,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-11-14 04:10:19,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2024-11-14 04:10:19,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 93 states have (on average 1.4946236559139785) internal successors, (139), 113 states have internal predecessors, (139), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-14 04:10:19,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 151 transitions. [2024-11-14 04:10:19,434 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 151 transitions. Word has length 31 [2024-11-14 04:10:19,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:10:19,434 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 151 transitions. [2024-11-14 04:10:19,434 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 04:10:19,435 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 151 transitions. [2024-11-14 04:10:19,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-14 04:10:19,437 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:10:19,437 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:10:19,461 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-14 04:10:19,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-14 04:10:19,638 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-14 04:10:19,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:10:19,638 INFO L85 PathProgramCache]: Analyzing trace with hash 876083485, now seen corresponding path program 1 times [2024-11-14 04:10:19,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:10:19,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830862261] [2024-11-14 04:10:19,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:10:19,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:10:19,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:10:19,766 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 04:10:19,766 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:10:19,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830862261] [2024-11-14 04:10:19,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830862261] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:10:19,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463911585] [2024-11-14 04:10:19,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:10:19,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:10:19,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:10:19,769 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:10:19,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-14 04:10:19,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:10:19,832 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 04:10:19,834 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:10:19,910 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 04:10:19,911 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:10:19,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463911585] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:10:19,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:10:19,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-11-14 04:10:19,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323607989] [2024-11-14 04:10:19,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:10:19,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 04:10:19,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:10:19,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 04:10:19,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-14 04:10:19,913 INFO L87 Difference]: Start difference. First operand 123 states and 151 transitions. Second operand has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 04:10:19,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:10:19,992 INFO L93 Difference]: Finished difference Result 133 states and 160 transitions. [2024-11-14 04:10:19,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 04:10:19,992 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 32 [2024-11-14 04:10:19,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:10:19,993 INFO L225 Difference]: With dead ends: 133 [2024-11-14 04:10:19,993 INFO L226 Difference]: Without dead ends: 132 [2024-11-14 04:10:19,994 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-14 04:10:19,994 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 39 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 04:10:19,995 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 172 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 04:10:19,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2024-11-14 04:10:20,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 122. [2024-11-14 04:10:20,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 93 states have (on average 1.4623655913978495) internal successors, (136), 112 states have internal predecessors, (136), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-14 04:10:20,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 148 transitions. [2024-11-14 04:10:20,009 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 148 transitions. Word has length 32 [2024-11-14 04:10:20,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:10:20,010 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 148 transitions. [2024-11-14 04:10:20,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 04:10:20,010 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 148 transitions. [2024-11-14 04:10:20,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-14 04:10:20,017 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:10:20,017 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:10:20,041 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-14 04:10:20,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-14 04:10:20,218 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-14 04:10:20,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:10:20,220 INFO L85 PathProgramCache]: Analyzing trace with hash 2142823194, now seen corresponding path program 1 times [2024-11-14 04:10:20,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:10:20,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411413383] [2024-11-14 04:10:20,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:10:20,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:10:20,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:10:20,379 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 04:10:20,379 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:10:20,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411413383] [2024-11-14 04:10:20,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411413383] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:10:20,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090987143] [2024-11-14 04:10:20,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:10:20,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:10:20,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:10:20,382 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:10:20,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-14 04:10:20,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:10:20,448 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 04:10:20,450 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:10:20,530 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 04:10:20,530 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:10:20,640 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 04:10:20,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090987143] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:10:20,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1568575856] [2024-11-14 04:10:20,643 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2024-11-14 04:10:20,644 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:10:20,644 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:10:20,644 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:10:20,644 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:10:22,488 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 36 for LOIs [2024-11-14 04:10:22,509 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 65 for LOIs [2024-11-14 04:10:22,549 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:10:27,218 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3729#(and (<= 0 |ULTIMATE.start_main_~x1~0#1|) (<= |ULTIMATE.start_main_~y3~0#1| 2147483647) (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~y2~0#1| 0) (<= 1 ~counter~0) (<= 0 (+ 2147483647 |ULTIMATE.start_main_~y3~0#1|)) (exists ((|v_ULTIMATE.start_main_~x2~0#1_39| Int) (|v_ULTIMATE.start_main_~y1~0#1_50| Int)) (and (<= |v_ULTIMATE.start_main_~y1~0#1_50| 2147483647) (<= 0 |v_ULTIMATE.start_main_~y1~0#1_50|) (<= (+ (* |v_ULTIMATE.start_main_~x2~0#1_39| |v_ULTIMATE.start_main_~y1~0#1_50|) 2147483649) 0) (<= 0 (+ |v_ULTIMATE.start_main_~x2~0#1_39| 2147483648)))) (<= ~counter~0 2147483647) (<= |ULTIMATE.start_main_~x1~0#1| 2147483647))' at error location [2024-11-14 04:10:27,219 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:10:27,219 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:10:27,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 6] total 13 [2024-11-14 04:10:27,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958627114] [2024-11-14 04:10:27,219 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 04:10:27,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-14 04:10:27,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:10:27,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-14 04:10:27,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=1090, Unknown=0, NotChecked=0, Total=1260 [2024-11-14 04:10:27,222 INFO L87 Difference]: Start difference. First operand 122 states and 148 transitions. Second operand has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 13 states have internal predecessors, (59), 5 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2024-11-14 04:10:27,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:10:27,438 INFO L93 Difference]: Finished difference Result 303 states and 364 transitions. [2024-11-14 04:10:27,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-14 04:10:27,439 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 13 states have internal predecessors, (59), 5 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) Word has length 34 [2024-11-14 04:10:27,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:10:27,441 INFO L225 Difference]: With dead ends: 303 [2024-11-14 04:10:27,441 INFO L226 Difference]: Without dead ends: 291 [2024-11-14 04:10:27,442 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 70 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 777 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=233, Invalid=1489, Unknown=0, NotChecked=0, Total=1722 [2024-11-14 04:10:27,443 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 128 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:10:27,443 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 254 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:10:27,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2024-11-14 04:10:27,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 243. [2024-11-14 04:10:27,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 207 states have (on average 1.4879227053140096) internal successors, (308), 226 states have internal predecessors, (308), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-14 04:10:27,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 330 transitions. [2024-11-14 04:10:27,464 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 330 transitions. Word has length 34 [2024-11-14 04:10:27,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:10:27,464 INFO L471 AbstractCegarLoop]: Abstraction has 243 states and 330 transitions. [2024-11-14 04:10:27,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 13 states have internal predecessors, (59), 5 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2024-11-14 04:10:27,465 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 330 transitions. [2024-11-14 04:10:27,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-14 04:10:27,466 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:10:27,466 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:10:27,492 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-14 04:10:27,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:10:27,670 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-14 04:10:27,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:10:27,671 INFO L85 PathProgramCache]: Analyzing trace with hash 2142823209, now seen corresponding path program 1 times [2024-11-14 04:10:27,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:10:27,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496864259] [2024-11-14 04:10:27,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:10:27,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:10:27,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 04:10:27,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [523661117] [2024-11-14 04:10:27,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:10:27,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:10:27,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:10:27,700 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:10:27,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-14 04:10:27,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:10:27,764 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-14 04:10:27,765 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:10:27,972 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 04:10:27,972 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:10:28,169 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:10:28,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496864259] [2024-11-14 04:10:28,170 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 04:10:28,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523661117] [2024-11-14 04:10:28,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [523661117] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:10:28,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [612958696] [2024-11-14 04:10:28,172 INFO L159 IcfgInterpreter]: Started Sifa with 28 locations of interest [2024-11-14 04:10:28,173 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:10:28,173 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:10:28,173 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:10:28,173 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:10:29,522 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 36 for LOIs [2024-11-14 04:10:29,533 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 65 for LOIs [2024-11-14 04:10:29,552 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:10:32,102 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4526#(and (<= 0 |ULTIMATE.start_main_~x1~0#1|) (<= |ULTIMATE.start_main_~y3~0#1| 2147483647) (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~y2~0#1| 0) (exists ((|v_ULTIMATE.start_main_~x2~0#1_40| Int) (|v_ULTIMATE.start_main_~y1~0#1_57| Int)) (and (<= (+ 2147483649 (* |v_ULTIMATE.start_main_~x2~0#1_40| |v_ULTIMATE.start_main_~y1~0#1_57|)) 0) (<= 0 (+ 2147483646 |v_ULTIMATE.start_main_~y1~0#1_57|)) (<= |v_ULTIMATE.start_main_~x2~0#1_40| 2147483647) (<= |v_ULTIMATE.start_main_~y1~0#1_57| 4294967294) (<= 0 (+ |v_ULTIMATE.start_main_~x2~0#1_40| 2147483648)))) (<= ~counter~0 50) (<= 1 ~counter~0) (<= 0 (+ 2147483647 |ULTIMATE.start_main_~y3~0#1|)) (<= |ULTIMATE.start_main_~x1~0#1| 2147483647))' at error location [2024-11-14 04:10:32,102 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:10:32,102 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:10:32,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2024-11-14 04:10:32,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476033998] [2024-11-14 04:10:32,102 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-14 04:10:32,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 04:10:32,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:10:32,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 04:10:32,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=720, Unknown=0, NotChecked=0, Total=870 [2024-11-14 04:10:32,104 INFO L87 Difference]: Start difference. First operand 243 states and 330 transitions. Second operand has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 04:10:32,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:10:32,252 INFO L93 Difference]: Finished difference Result 251 states and 333 transitions. [2024-11-14 04:10:32,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 04:10:32,253 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 34 [2024-11-14 04:10:32,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:10:32,254 INFO L225 Difference]: With dead ends: 251 [2024-11-14 04:10:32,254 INFO L226 Difference]: Without dead ends: 244 [2024-11-14 04:10:32,255 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 50 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=160, Invalid=770, Unknown=0, NotChecked=0, Total=930 [2024-11-14 04:10:32,255 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 82 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:10:32,255 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 54 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:10:32,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2024-11-14 04:10:32,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 239. [2024-11-14 04:10:32,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 208 states have (on average 1.3798076923076923) internal successors, (287), 222 states have internal predecessors, (287), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-14 04:10:32,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 309 transitions. [2024-11-14 04:10:32,272 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 309 transitions. Word has length 34 [2024-11-14 04:10:32,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:10:32,272 INFO L471 AbstractCegarLoop]: Abstraction has 239 states and 309 transitions. [2024-11-14 04:10:32,272 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 04:10:32,272 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 309 transitions. [2024-11-14 04:10:32,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-14 04:10:32,273 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:10:32,273 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:10:32,290 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-14 04:10:32,477 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:10:32,477 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-14 04:10:32,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:10:32,477 INFO L85 PathProgramCache]: Analyzing trace with hash 2003010091, now seen corresponding path program 1 times [2024-11-14 04:10:32,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:10:32,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632502625] [2024-11-14 04:10:32,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:10:32,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:10:32,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 04:10:32,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [318949567] [2024-11-14 04:10:32,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:10:32,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:10:32,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:10:32,493 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:10:32,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-14 04:10:32,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:10:32,542 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-14 04:10:32,543 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:10:32,693 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 04:10:32,693 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:10:33,259 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:10:33,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632502625] [2024-11-14 04:10:33,260 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 04:10:33,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318949567] [2024-11-14 04:10:33,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318949567] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:10:33,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1864289316] [2024-11-14 04:10:33,262 INFO L159 IcfgInterpreter]: Started Sifa with 28 locations of interest [2024-11-14 04:10:33,262 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:10:33,262 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:10:33,262 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:10:33,262 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:10:34,507 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 36 for LOIs [2024-11-14 04:10:34,515 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 65 for LOIs [2024-11-14 04:10:34,530 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:10:37,477 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5261#(and (<= 0 |ULTIMATE.start_main_~x1~0#1|) (<= |ULTIMATE.start_main_~y3~0#1| 2147483647) (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~y2~0#1| 0) (<= ~counter~0 50) (<= 1 ~counter~0) (<= 0 (+ 2147483647 |ULTIMATE.start_main_~y3~0#1|)) (<= |ULTIMATE.start_main_~x1~0#1| 2147483647) (exists ((|v_ULTIMATE.start_main_~y1~0#1_64| Int) (|v_ULTIMATE.start_main_~x2~0#1_41| Int)) (and (<= 2147483648 (* |v_ULTIMATE.start_main_~x2~0#1_41| |v_ULTIMATE.start_main_~y1~0#1_64|)) (<= |v_ULTIMATE.start_main_~x2~0#1_41| 2147483647) (<= |v_ULTIMATE.start_main_~y1~0#1_64| 2147483647) (<= 0 |v_ULTIMATE.start_main_~y1~0#1_64|))))' at error location [2024-11-14 04:10:37,477 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:10:37,478 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:10:37,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2024-11-14 04:10:37,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501483393] [2024-11-14 04:10:37,478 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-14 04:10:37,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 04:10:37,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:10:37,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 04:10:37,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=790, Unknown=0, NotChecked=0, Total=930 [2024-11-14 04:10:37,479 INFO L87 Difference]: Start difference. First operand 239 states and 309 transitions. Second operand has 6 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 04:10:37,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:10:37,758 INFO L93 Difference]: Finished difference Result 330 states and 423 transitions. [2024-11-14 04:10:37,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 04:10:37,758 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 35 [2024-11-14 04:10:37,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:10:37,760 INFO L225 Difference]: With dead ends: 330 [2024-11-14 04:10:37,760 INFO L226 Difference]: Without dead ends: 325 [2024-11-14 04:10:37,760 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 52 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=140, Invalid=790, Unknown=0, NotChecked=0, Total=930 [2024-11-14 04:10:37,761 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 98 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 04:10:37,761 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 126 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 04:10:37,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2024-11-14 04:10:37,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 306. [2024-11-14 04:10:37,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 272 states have (on average 1.3602941176470589) internal successors, (370), 286 states have internal predecessors, (370), 14 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-14 04:10:37,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 398 transitions. [2024-11-14 04:10:37,782 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 398 transitions. Word has length 35 [2024-11-14 04:10:37,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:10:37,782 INFO L471 AbstractCegarLoop]: Abstraction has 306 states and 398 transitions. [2024-11-14 04:10:37,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 04:10:37,782 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 398 transitions. [2024-11-14 04:10:37,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-14 04:10:37,783 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:10:37,783 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:10:37,801 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-14 04:10:37,984 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:10:37,984 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-14 04:10:37,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:10:37,985 INFO L85 PathProgramCache]: Analyzing trace with hash -146622815, now seen corresponding path program 1 times [2024-11-14 04:10:37,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:10:37,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199290454] [2024-11-14 04:10:37,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:10:37,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:10:37,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:10:38,093 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 04:10:38,093 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:10:38,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199290454] [2024-11-14 04:10:38,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199290454] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:10:38,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700451900] [2024-11-14 04:10:38,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:10:38,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:10:38,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:10:38,096 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:10:38,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-14 04:10:38,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:10:38,154 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 04:10:38,156 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:10:38,306 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 04:10:38,306 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:10:38,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [700451900] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:10:38,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:10:38,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-11-14 04:10:38,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015498655] [2024-11-14 04:10:38,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:10:38,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 04:10:38,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:10:38,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 04:10:38,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-14 04:10:38,308 INFO L87 Difference]: Start difference. First operand 306 states and 398 transitions. Second operand has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 04:10:38,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:10:38,506 INFO L93 Difference]: Finished difference Result 306 states and 398 transitions. [2024-11-14 04:10:38,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 04:10:38,507 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 36 [2024-11-14 04:10:38,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:10:38,508 INFO L225 Difference]: With dead ends: 306 [2024-11-14 04:10:38,508 INFO L226 Difference]: Without dead ends: 304 [2024-11-14 04:10:38,509 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-14 04:10:38,509 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 29 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 04:10:38,509 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 65 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 04:10:38,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2024-11-14 04:10:38,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 301. [2024-11-14 04:10:38,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 269 states have (on average 1.3494423791821561) internal successors, (363), 281 states have internal predecessors, (363), 14 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-14 04:10:38,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 391 transitions. [2024-11-14 04:10:38,531 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 391 transitions. Word has length 36 [2024-11-14 04:10:38,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:10:38,531 INFO L471 AbstractCegarLoop]: Abstraction has 301 states and 391 transitions. [2024-11-14 04:10:38,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 04:10:38,532 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 391 transitions. [2024-11-14 04:10:38,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-14 04:10:38,532 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:10:38,532 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:10:38,548 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-14 04:10:38,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-14 04:10:38,736 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-14 04:10:38,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:10:38,736 INFO L85 PathProgramCache]: Analyzing trace with hash -250339913, now seen corresponding path program 1 times [2024-11-14 04:10:38,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:10:38,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041925265] [2024-11-14 04:10:38,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:10:38,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:10:38,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:10:38,865 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 04:10:38,865 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:10:38,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041925265] [2024-11-14 04:10:38,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041925265] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:10:38,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356066114] [2024-11-14 04:10:38,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:10:38,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:10:38,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:10:38,869 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:10:38,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-14 04:10:38,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:10:38,921 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 04:10:38,923 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:10:39,014 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 04:10:39,014 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:10:39,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [356066114] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:10:39,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1175681847] [2024-11-14 04:10:39,123 INFO L159 IcfgInterpreter]: Started Sifa with 28 locations of interest [2024-11-14 04:10:39,123 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:10:39,123 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:10:39,124 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:10:39,124 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:10:40,203 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 31 for LOIs [2024-11-14 04:10:40,207 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 65 for LOIs [2024-11-14 04:10:40,217 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:10:42,295 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6969#(and (<= 0 |ULTIMATE.start_main_~x1~0#1|) (<= |ULTIMATE.start_main_~y3~0#1| 2147483647) (<= 1 |#StackHeapBarrier|) (<= 1 ~counter~0) (<= |ULTIMATE.start_main_~x1~0#1| 2147483647))' at error location [2024-11-14 04:10:42,295 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:10:42,295 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-14 04:10:42,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3] total 7 [2024-11-14 04:10:42,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248847681] [2024-11-14 04:10:42,295 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-14 04:10:42,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 04:10:42,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:10:42,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 04:10:42,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=790, Unknown=0, NotChecked=0, Total=930 [2024-11-14 04:10:42,297 INFO L87 Difference]: Start difference. First operand 301 states and 391 transitions. Second operand has 8 states, 6 states have (on average 9.666666666666666) internal successors, (58), 8 states have internal predecessors, (58), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-14 04:10:42,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:10:42,536 INFO L93 Difference]: Finished difference Result 309 states and 395 transitions. [2024-11-14 04:10:42,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 04:10:42,536 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 9.666666666666666) internal successors, (58), 8 states have internal predecessors, (58), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 37 [2024-11-14 04:10:42,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:10:42,538 INFO L225 Difference]: With dead ends: 309 [2024-11-14 04:10:42,538 INFO L226 Difference]: Without dead ends: 301 [2024-11-14 04:10:42,539 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 64 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=157, Invalid=899, Unknown=0, NotChecked=0, Total=1056 [2024-11-14 04:10:42,539 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 23 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 04:10:42,540 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 127 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 04:10:42,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2024-11-14 04:10:42,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 301. [2024-11-14 04:10:42,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 269 states have (on average 1.3345724907063197) internal successors, (359), 281 states have internal predecessors, (359), 14 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-14 04:10:42,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 387 transitions. [2024-11-14 04:10:42,562 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 387 transitions. Word has length 37 [2024-11-14 04:10:42,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:10:42,562 INFO L471 AbstractCegarLoop]: Abstraction has 301 states and 387 transitions. [2024-11-14 04:10:42,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 9.666666666666666) internal successors, (58), 8 states have internal predecessors, (58), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-14 04:10:42,562 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 387 transitions. [2024-11-14 04:10:42,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-14 04:10:42,566 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:10:42,566 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:10:42,587 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-14 04:10:42,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-14 04:10:42,767 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-14 04:10:42,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:10:42,768 INFO L85 PathProgramCache]: Analyzing trace with hash 829397347, now seen corresponding path program 1 times [2024-11-14 04:10:42,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:10:42,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132471816] [2024-11-14 04:10:42,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:10:42,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:10:42,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:10:42,826 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 04:10:42,826 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:10:42,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132471816] [2024-11-14 04:10:42,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132471816] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:10:42,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:10:42,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:10:42,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529685337] [2024-11-14 04:10:42,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:10:42,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 04:10:42,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:10:42,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 04:10:42,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:10:42,828 INFO L87 Difference]: Start difference. First operand 301 states and 387 transitions. Second operand has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 04:10:42,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:10:42,996 INFO L93 Difference]: Finished difference Result 308 states and 394 transitions. [2024-11-14 04:10:42,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 04:10:42,996 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 38 [2024-11-14 04:10:42,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:10:42,998 INFO L225 Difference]: With dead ends: 308 [2024-11-14 04:10:42,998 INFO L226 Difference]: Without dead ends: 307 [2024-11-14 04:10:42,998 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:10:42,998 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 4 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:10:42,999 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 50 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:10:42,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2024-11-14 04:10:43,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 301. [2024-11-14 04:10:43,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 269 states have (on average 1.312267657992565) internal successors, (353), 281 states have internal predecessors, (353), 14 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-14 04:10:43,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 381 transitions. [2024-11-14 04:10:43,016 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 381 transitions. Word has length 38 [2024-11-14 04:10:43,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:10:43,017 INFO L471 AbstractCegarLoop]: Abstraction has 301 states and 381 transitions. [2024-11-14 04:10:43,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 04:10:43,017 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 381 transitions. [2024-11-14 04:10:43,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-14 04:10:43,018 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:10:43,018 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:10:43,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-14 04:10:43,018 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-14 04:10:43,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:10:43,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1693031341, now seen corresponding path program 1 times [2024-11-14 04:10:43,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:10:43,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390075746] [2024-11-14 04:10:43,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:10:43,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:10:43,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:10:43,238 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 04:10:43,238 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:10:43,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390075746] [2024-11-14 04:10:43,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390075746] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:10:43,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371417550] [2024-11-14 04:10:43,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:10:43,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:10:43,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:10:43,241 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:10:43,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-14 04:10:43,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:10:43,278 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-14 04:10:43,279 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:10:43,391 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 04:10:43,391 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:10:45,762 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 04:10:45,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1371417550] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:10:45,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1480738648] [2024-11-14 04:10:45,764 INFO L159 IcfgInterpreter]: Started Sifa with 28 locations of interest [2024-11-14 04:10:45,764 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:10:45,765 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:10:45,765 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:10:45,765 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:10:46,828 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 36 for LOIs [2024-11-14 04:10:46,836 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 65 for LOIs [2024-11-14 04:10:46,853 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:10:49,719 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8614#(and (<= 0 |ULTIMATE.start_main_~x1~0#1|) (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_~y1~0#1_72| Int) (|v_ULTIMATE.start_main_~x2~0#1_43| Int)) (and (<= |v_ULTIMATE.start_main_~x2~0#1_43| 2147483647) (<= (* |v_ULTIMATE.start_main_~x2~0#1_43| |v_ULTIMATE.start_main_~y1~0#1_72|) 2147483647) (<= 0 |v_ULTIMATE.start_main_~y1~0#1_72|) (<= 0 (+ |v_ULTIMATE.start_main_~x2~0#1_43| 2147483648)))) (<= 1 ~counter~0) (<= |ULTIMATE.start_main_~x1~0#1| 2147483647))' at error location [2024-11-14 04:10:49,719 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:10:49,719 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:10:49,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2024-11-14 04:10:49,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026312601] [2024-11-14 04:10:49,720 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 04:10:49,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-14 04:10:49,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:10:49,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-14 04:10:49,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=1151, Unknown=0, NotChecked=0, Total=1332 [2024-11-14 04:10:49,721 INFO L87 Difference]: Start difference. First operand 301 states and 381 transitions. Second operand has 15 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 14 states have internal predecessors, (56), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 04:10:50,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:10:50,448 INFO L93 Difference]: Finished difference Result 311 states and 388 transitions. [2024-11-14 04:10:50,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-14 04:10:50,448 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 14 states have internal predecessors, (56), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 38 [2024-11-14 04:10:50,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:10:50,450 INFO L225 Difference]: With dead ends: 311 [2024-11-14 04:10:50,451 INFO L226 Difference]: Without dead ends: 308 [2024-11-14 04:10:50,451 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 77 SyntacticMatches, 8 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 801 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=283, Invalid=1787, Unknown=0, NotChecked=0, Total=2070 [2024-11-14 04:10:50,452 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 142 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-14 04:10:50,452 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 135 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-14 04:10:50,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2024-11-14 04:10:50,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 298. [2024-11-14 04:10:50,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 269 states have (on average 1.245353159851301) internal successors, (335), 278 states have internal predecessors, (335), 14 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-14 04:10:50,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 363 transitions. [2024-11-14 04:10:50,483 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 363 transitions. Word has length 38 [2024-11-14 04:10:50,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:10:50,483 INFO L471 AbstractCegarLoop]: Abstraction has 298 states and 363 transitions. [2024-11-14 04:10:50,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 14 states have internal predecessors, (56), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 04:10:50,484 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 363 transitions. [2024-11-14 04:10:50,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-14 04:10:50,484 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:10:50,484 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:10:50,505 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-14 04:10:50,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-14 04:10:50,685 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-14 04:10:50,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:10:50,685 INFO L85 PathProgramCache]: Analyzing trace with hash -58485959, now seen corresponding path program 1 times [2024-11-14 04:10:50,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:10:50,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642753074] [2024-11-14 04:10:50,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:10:50,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:10:50,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:10:50,755 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 04:10:50,755 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:10:50,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642753074] [2024-11-14 04:10:50,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642753074] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:10:50,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:10:50,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:10:50,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671520068] [2024-11-14 04:10:50,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:10:50,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 04:10:50,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:10:50,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 04:10:50,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:10:50,757 INFO L87 Difference]: Start difference. First operand 298 states and 363 transitions. Second operand has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 04:10:51,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:10:51,105 INFO L93 Difference]: Finished difference Result 305 states and 370 transitions. [2024-11-14 04:10:51,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 04:10:51,105 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 39 [2024-11-14 04:10:51,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:10:51,107 INFO L225 Difference]: With dead ends: 305 [2024-11-14 04:10:51,107 INFO L226 Difference]: Without dead ends: 304 [2024-11-14 04:10:51,107 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:10:51,108 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 4 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 04:10:51,108 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 55 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 04:10:51,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2024-11-14 04:10:51,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 298. [2024-11-14 04:10:51,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 269 states have (on average 1.2230483271375465) internal successors, (329), 278 states have internal predecessors, (329), 14 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-14 04:10:51,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 357 transitions. [2024-11-14 04:10:51,138 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 357 transitions. Word has length 39 [2024-11-14 04:10:51,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:10:51,138 INFO L471 AbstractCegarLoop]: Abstraction has 298 states and 357 transitions. [2024-11-14 04:10:51,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 04:10:51,138 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 357 transitions. [2024-11-14 04:10:51,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-14 04:10:51,139 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:10:51,139 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:10:51,139 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-14 04:10:51,139 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-14 04:10:51,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:10:51,139 INFO L85 PathProgramCache]: Analyzing trace with hash 944364079, now seen corresponding path program 1 times [2024-11-14 04:10:51,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:10:51,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611876253] [2024-11-14 04:10:51,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:10:51,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:10:51,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 04:10:51,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [693181343] [2024-11-14 04:10:51,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:10:51,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:10:51,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:10:51,154 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:10:51,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-14 04:10:51,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:10:51,207 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-14 04:10:51,208 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:10:51,421 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 04:10:51,421 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:10:51,553 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 04:10:51,554 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:10:51,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611876253] [2024-11-14 04:10:51,554 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 04:10:51,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693181343] [2024-11-14 04:10:51,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693181343] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:10:51,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [960212834] [2024-11-14 04:10:51,556 INFO L159 IcfgInterpreter]: Started Sifa with 28 locations of interest [2024-11-14 04:10:51,556 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:10:51,556 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:10:51,556 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:10:51,556 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:10:52,328 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 36 for LOIs [2024-11-14 04:10:52,335 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 65 for LOIs [2024-11-14 04:10:52,351 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:10:54,884 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '10269#(and (<= 0 |ULTIMATE.start_main_~x1~0#1|) (<= 1 |#StackHeapBarrier|) (<= 1 ~counter~0) (<= |ULTIMATE.start_main_~x1~0#1| 2147483647) (exists ((|v_ULTIMATE.start_main_~y1~0#1_80| Int) (|v_ULTIMATE.start_main_~x2~0#1_44| Int)) (and (<= 1 (* |v_ULTIMATE.start_main_~x2~0#1_44| |v_ULTIMATE.start_main_~y1~0#1_80|)) (<= 0 |v_ULTIMATE.start_main_~y1~0#1_80|) (<= (* |v_ULTIMATE.start_main_~x2~0#1_44| |v_ULTIMATE.start_main_~y1~0#1_80|) 2147483647))))' at error location [2024-11-14 04:10:54,884 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:10:54,884 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-14 04:10:54,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2024-11-14 04:10:54,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329248255] [2024-11-14 04:10:54,884 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-14 04:10:54,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-14 04:10:54,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:10:54,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-14 04:10:54,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=897, Unknown=0, NotChecked=0, Total=1056 [2024-11-14 04:10:54,886 INFO L87 Difference]: Start difference. First operand 298 states and 357 transitions. Second operand has 11 states, 10 states have (on average 6.1) internal successors, (61), 11 states have internal predecessors, (61), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-14 04:10:55,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:10:55,294 INFO L93 Difference]: Finished difference Result 400 states and 476 transitions. [2024-11-14 04:10:55,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-14 04:10:55,295 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 6.1) internal successors, (61), 11 states have internal predecessors, (61), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 39 [2024-11-14 04:10:55,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:10:55,297 INFO L225 Difference]: With dead ends: 400 [2024-11-14 04:10:55,297 INFO L226 Difference]: Without dead ends: 282 [2024-11-14 04:10:55,298 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 80 SyntacticMatches, 4 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 510 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=221, Invalid=1339, Unknown=0, NotChecked=0, Total=1560 [2024-11-14 04:10:55,298 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 100 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 04:10:55,298 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 78 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 04:10:55,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2024-11-14 04:10:55,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 276. [2024-11-14 04:10:55,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 249 states have (on average 1.1927710843373494) internal successors, (297), 257 states have internal predecessors, (297), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-14 04:10:55,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 323 transitions. [2024-11-14 04:10:55,320 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 323 transitions. Word has length 39 [2024-11-14 04:10:55,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:10:55,321 INFO L471 AbstractCegarLoop]: Abstraction has 276 states and 323 transitions. [2024-11-14 04:10:55,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 6.1) internal successors, (61), 11 states have internal predecessors, (61), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-14 04:10:55,321 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 323 transitions. [2024-11-14 04:10:55,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-14 04:10:55,322 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:10:55,322 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:10:55,342 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-14 04:10:55,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:10:55,526 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-14 04:10:55,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:10:55,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1921706059, now seen corresponding path program 1 times [2024-11-14 04:10:55,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:10:55,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432670356] [2024-11-14 04:10:55,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:10:55,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:10:55,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:10:55,567 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 04:10:55,567 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:10:55,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432670356] [2024-11-14 04:10:55,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432670356] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:10:55,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:10:55,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 04:10:55,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851196737] [2024-11-14 04:10:55,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:10:55,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:10:55,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:10:55,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:10:55,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:10:55,569 INFO L87 Difference]: Start difference. First operand 276 states and 323 transitions. Second operand has 3 states, 2 states have (on average 20.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-14 04:10:55,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:10:55,608 INFO L93 Difference]: Finished difference Result 284 states and 330 transitions. [2024-11-14 04:10:55,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:10:55,609 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 20.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 50 [2024-11-14 04:10:55,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:10:55,612 INFO L225 Difference]: With dead ends: 284 [2024-11-14 04:10:55,612 INFO L226 Difference]: Without dead ends: 282 [2024-11-14 04:10:55,613 INFO L431 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 [2024-11-14 04:10:55,613 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 15 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 04:10:55,613 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 92 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 04:10:55,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2024-11-14 04:10:55,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 274. [2024-11-14 04:10:55,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 249 states have (on average 1.144578313253012) internal successors, (285), 255 states have internal predecessors, (285), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-14 04:10:55,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 311 transitions. [2024-11-14 04:10:55,632 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 311 transitions. Word has length 50 [2024-11-14 04:10:55,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:10:55,632 INFO L471 AbstractCegarLoop]: Abstraction has 274 states and 311 transitions. [2024-11-14 04:10:55,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 20.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-14 04:10:55,633 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 311 transitions. [2024-11-14 04:10:55,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-14 04:10:55,633 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:10:55,633 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:10:55,633 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-14 04:10:55,633 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-14 04:10:55,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:10:55,634 INFO L85 PathProgramCache]: Analyzing trace with hash -949175298, now seen corresponding path program 2 times [2024-11-14 04:10:55,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:10:55,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947514672] [2024-11-14 04:10:55,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:10:55,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:10:55,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 04:10:55,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [805016512] [2024-11-14 04:10:55,650 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 04:10:55,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:10:55,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:10:55,652 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:10:55,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-14 04:10:55,709 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-14 04:10:55,709 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 04:10:55,710 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-14 04:10:55,712 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:10:56,219 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 12 proven. 20 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-14 04:10:56,219 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:10:56,614 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:10:56,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947514672] [2024-11-14 04:10:56,614 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 04:10:56,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [805016512] [2024-11-14 04:10:56,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [805016512] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:10:56,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1884138312] [2024-11-14 04:10:56,616 INFO L159 IcfgInterpreter]: Started Sifa with 28 locations of interest [2024-11-14 04:10:56,616 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:10:56,616 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:10:56,617 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:10:56,617 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:10:57,529 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 36 for LOIs [2024-11-14 04:10:57,535 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 65 for LOIs [2024-11-14 04:10:57,545 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:11:01,237 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '11935#(and (<= 0 |ULTIMATE.start_main_~x1~0#1|) (<= |ULTIMATE.start_main_~y3~0#1| 2147483647) (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~y2~0#1| 0) (<= ~counter~0 50) (<= 1 ~counter~0) (<= 0 (+ 2147483647 |ULTIMATE.start_main_~y3~0#1|)) (exists ((|v_ULTIMATE.start_main_~y1~0#1_87| Int) (|v_ULTIMATE.start_main_~x2~0#1_45| Int)) (and (<= |v_ULTIMATE.start_main_~y1~0#1_87| 2147483647) (<= 0 |v_ULTIMATE.start_main_~y1~0#1_87|) (<= 2147483648 (* |v_ULTIMATE.start_main_~x2~0#1_45| |v_ULTIMATE.start_main_~y1~0#1_87|)) (<= |v_ULTIMATE.start_main_~x2~0#1_45| 2147483647))) (<= |ULTIMATE.start_main_~x1~0#1| 2147483647))' at error location [2024-11-14 04:11:01,237 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:11:01,237 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:11:01,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2024-11-14 04:11:01,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379780657] [2024-11-14 04:11:01,237 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-14 04:11:01,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-14 04:11:01,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:11:01,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-14 04:11:01,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=1308, Unknown=0, NotChecked=0, Total=1482 [2024-11-14 04:11:01,239 INFO L87 Difference]: Start difference. First operand 274 states and 311 transitions. Second operand has 13 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 12 states have internal predecessors, (47), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-14 04:11:02,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:11:02,033 INFO L93 Difference]: Finished difference Result 291 states and 326 transitions. [2024-11-14 04:11:02,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-14 04:11:02,034 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 12 states have internal predecessors, (47), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 56 [2024-11-14 04:11:02,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:11:02,035 INFO L225 Difference]: With dead ends: 291 [2024-11-14 04:11:02,035 INFO L226 Difference]: Without dead ends: 286 [2024-11-14 04:11:02,036 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 84 SyntacticMatches, 5 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 910 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=351, Invalid=2405, Unknown=0, NotChecked=0, Total=2756 [2024-11-14 04:11:02,038 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 117 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 04:11:02,038 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 122 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 04:11:02,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2024-11-14 04:11:02,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 163. [2024-11-14 04:11:02,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 145 states have (on average 1.103448275862069) internal successors, (160), 148 states have internal predecessors, (160), 9 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-14 04:11:02,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 178 transitions. [2024-11-14 04:11:02,055 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 178 transitions. Word has length 56 [2024-11-14 04:11:02,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:11:02,056 INFO L471 AbstractCegarLoop]: Abstraction has 163 states and 178 transitions. [2024-11-14 04:11:02,056 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 12 states have internal predecessors, (47), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-14 04:11:02,056 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 178 transitions. [2024-11-14 04:11:02,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-14 04:11:02,056 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:11:02,056 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:11:02,075 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-14 04:11:02,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:11:02,261 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-14 04:11:02,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:11:02,262 INFO L85 PathProgramCache]: Analyzing trace with hash -619039360, now seen corresponding path program 2 times [2024-11-14 04:11:02,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:11:02,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875201606] [2024-11-14 04:11:02,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:11:02,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:11:02,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:11:02,417 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-14 04:11:02,417 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:11:02,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875201606] [2024-11-14 04:11:02,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875201606] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:11:02,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [330560859] [2024-11-14 04:11:02,418 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 04:11:02,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:11:02,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:11:02,420 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:11:02,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-14 04:11:02,481 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-14 04:11:02,482 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 04:11:02,482 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 04:11:02,486 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:11:02,633 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-14 04:11:02,633 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:11:02,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [330560859] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:11:02,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:11:02,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-11-14 04:11:02,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833384618] [2024-11-14 04:11:02,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:11:02,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 04:11:02,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:11:02,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 04:11:02,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-14 04:11:02,634 INFO L87 Difference]: Start difference. First operand 163 states and 178 transitions. Second operand has 5 states, 4 states have (on average 9.0) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 04:11:02,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:11:02,708 INFO L93 Difference]: Finished difference Result 200 states and 218 transitions. [2024-11-14 04:11:02,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 04:11:02,708 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.0) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 58 [2024-11-14 04:11:02,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:11:02,709 INFO L225 Difference]: With dead ends: 200 [2024-11-14 04:11:02,709 INFO L226 Difference]: Without dead ends: 193 [2024-11-14 04:11:02,710 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-14 04:11:02,710 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 30 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:11:02,710 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 56 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:11:02,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2024-11-14 04:11:02,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 176. [2024-11-14 04:11:02,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 157 states have (on average 1.0764331210191083) internal successors, (169), 161 states have internal predecessors, (169), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-14 04:11:02,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 189 transitions. [2024-11-14 04:11:02,732 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 189 transitions. Word has length 58 [2024-11-14 04:11:02,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:11:02,732 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 189 transitions. [2024-11-14 04:11:02,732 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.0) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 04:11:02,732 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 189 transitions. [2024-11-14 04:11:02,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-14 04:11:02,733 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:11:02,733 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:11:02,756 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-14 04:11:02,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-14 04:11:02,941 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-14 04:11:02,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:11:02,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1214673003, now seen corresponding path program 1 times [2024-11-14 04:11:02,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:11:02,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141025317] [2024-11-14 04:11:02,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:11:02,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:11:02,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:11:03,068 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-14 04:11:03,069 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:11:03,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141025317] [2024-11-14 04:11:03,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141025317] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:11:03,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1847079965] [2024-11-14 04:11:03,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:11:03,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:11:03,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:11:03,071 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:11:03,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-14 04:11:03,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:11:03,126 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 04:11:03,128 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:11:03,198 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-14 04:11:03,198 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:11:03,311 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-14 04:11:03,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1847079965] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:11:03,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1376700118] [2024-11-14 04:11:03,313 INFO L159 IcfgInterpreter]: Started Sifa with 28 locations of interest [2024-11-14 04:11:03,314 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:11:03,314 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:11:03,314 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:11:03,314 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:11:04,229 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 31 for LOIs [2024-11-14 04:11:04,237 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 65 for LOIs [2024-11-14 04:11:04,253 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:11:06,159 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '13519#(and (<= 0 |ULTIMATE.start_main_~x1~0#1|) (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~x2~0#1| 2147483647) (= |ULTIMATE.start_main_~y1~0#1| 0) (<= 1 ~counter~0) (<= |ULTIMATE.start_main_~y3~0#1| 0) (not (= |ULTIMATE.start_main_~y3~0#1| 0)) (<= 0 (+ |ULTIMATE.start_main_~x2~0#1| 2147483648)) (= (+ 2147483647 |ULTIMATE.start_main_~y3~0#1|) |ULTIMATE.start_main_~x1~0#1|))' at error location [2024-11-14 04:11:06,159 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:11:06,159 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:11:06,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-14 04:11:06,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976510444] [2024-11-14 04:11:06,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 04:11:06,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-14 04:11:06,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:11:06,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-14 04:11:06,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=745, Unknown=0, NotChecked=0, Total=870 [2024-11-14 04:11:06,161 INFO L87 Difference]: Start difference. First operand 176 states and 189 transitions. Second operand has 9 states, 8 states have (on average 15.0) internal successors, (120), 9 states have internal predecessors, (120), 8 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2024-11-14 04:11:06,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:11:06,325 INFO L93 Difference]: Finished difference Result 349 states and 404 transitions. [2024-11-14 04:11:06,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 04:11:06,326 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 15.0) internal successors, (120), 9 states have internal predecessors, (120), 8 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) Word has length 66 [2024-11-14 04:11:06,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:11:06,328 INFO L225 Difference]: With dead ends: 349 [2024-11-14 04:11:06,328 INFO L226 Difference]: Without dead ends: 347 [2024-11-14 04:11:06,328 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 169 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=125, Invalid=745, Unknown=0, NotChecked=0, Total=870 [2024-11-14 04:11:06,329 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 59 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:11:06,330 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 130 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:11:06,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2024-11-14 04:11:06,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 327. [2024-11-14 04:11:06,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 301 states have (on average 1.1096345514950166) internal successors, (334), 303 states have internal predecessors, (334), 18 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-14 04:11:06,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 370 transitions. [2024-11-14 04:11:06,364 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 370 transitions. Word has length 66 [2024-11-14 04:11:06,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:11:06,365 INFO L471 AbstractCegarLoop]: Abstraction has 327 states and 370 transitions. [2024-11-14 04:11:06,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 15.0) internal successors, (120), 9 states have internal predecessors, (120), 8 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2024-11-14 04:11:06,365 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 370 transitions. [2024-11-14 04:11:06,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-14 04:11:06,368 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:11:06,369 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:11:06,393 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-14 04:11:06,569 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-14 04:11:06,570 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-14 04:11:06,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:11:06,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1137443167, now seen corresponding path program 1 times [2024-11-14 04:11:06,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:11:06,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203376187] [2024-11-14 04:11:06,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:11:06,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:11:06,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:11:06,728 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 2 proven. 73 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-14 04:11:06,729 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:11:06,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203376187] [2024-11-14 04:11:06,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203376187] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:11:06,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [988409616] [2024-11-14 04:11:06,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:11:06,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:11:06,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:11:06,731 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:11:06,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-14 04:11:06,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:11:06,788 INFO L255 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 04:11:06,789 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:11:06,899 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 2 proven. 73 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-14 04:11:06,899 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:11:07,117 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 2 proven. 73 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-14 04:11:07,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [988409616] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:11:07,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1304402238] [2024-11-14 04:11:07,119 INFO L159 IcfgInterpreter]: Started Sifa with 32 locations of interest [2024-11-14 04:11:07,121 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:11:07,121 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:11:07,122 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:11:07,122 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:11:08,422 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 39 for LOIs [2024-11-14 04:11:08,431 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 65 for LOIs [2024-11-14 04:11:08,451 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:11:11,398 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '14787#(and (<= 0 |ULTIMATE.start_main_~x1~0#1|) (<= |ULTIMATE.start_main_~y3~0#1| 2147483647) (<= 1 |#StackHeapBarrier|) (<= 1 ~counter~0) (<= |ULTIMATE.start_main_~x1~0#1| 2147483647))' at error location [2024-11-14 04:11:11,399 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:11:11,399 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:11:11,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-14 04:11:11,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209513127] [2024-11-14 04:11:11,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 04:11:11,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-14 04:11:11,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:11:11,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-14 04:11:11,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1237, Unknown=0, NotChecked=0, Total=1406 [2024-11-14 04:11:11,401 INFO L87 Difference]: Start difference. First operand 327 states and 370 transitions. Second operand has 13 states, 11 states have (on average 11.818181818181818) internal successors, (130), 13 states have internal predecessors, (130), 7 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-14 04:11:12,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:11:12,202 INFO L93 Difference]: Finished difference Result 581 states and 666 transitions. [2024-11-14 04:11:12,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-14 04:11:12,202 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 11.818181818181818) internal successors, (130), 13 states have internal predecessors, (130), 7 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) Word has length 79 [2024-11-14 04:11:12,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:11:12,206 INFO L225 Difference]: With dead ends: 581 [2024-11-14 04:11:12,206 INFO L226 Difference]: Without dead ends: 555 [2024-11-14 04:11:12,207 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 199 SyntacticMatches, 7 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1019 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=377, Invalid=2379, Unknown=0, NotChecked=0, Total=2756 [2024-11-14 04:11:12,209 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 167 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 04:11:12,210 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 122 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 04:11:12,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2024-11-14 04:11:12,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 538. [2024-11-14 04:11:12,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 503 states have (on average 1.0715705765407555) internal successors, (539), 505 states have internal predecessors, (539), 27 states have call successors, (27), 5 states have call predecessors, (27), 5 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-14 04:11:12,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 593 transitions. [2024-11-14 04:11:12,277 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 593 transitions. Word has length 79 [2024-11-14 04:11:12,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:11:12,277 INFO L471 AbstractCegarLoop]: Abstraction has 538 states and 593 transitions. [2024-11-14 04:11:12,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 11.818181818181818) internal successors, (130), 13 states have internal predecessors, (130), 7 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-14 04:11:12,282 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 593 transitions. [2024-11-14 04:11:12,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-11-14 04:11:12,284 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:11:12,285 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:11:12,313 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-14 04:11:12,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-14 04:11:12,486 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-14 04:11:12,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:11:12,486 INFO L85 PathProgramCache]: Analyzing trace with hash 932081963, now seen corresponding path program 2 times [2024-11-14 04:11:12,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:11:12,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113952007] [2024-11-14 04:11:12,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:11:12,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:11:12,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:11:12,752 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 0 proven. 369 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-14 04:11:12,752 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:11:12,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113952007] [2024-11-14 04:11:12,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113952007] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:11:12,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20414953] [2024-11-14 04:11:12,753 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 04:11:12,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:11:12,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:11:12,755 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:11:12,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-14 04:11:12,856 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-14 04:11:12,856 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 04:11:12,858 INFO L255 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 04:11:12,860 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:11:13,077 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 0 proven. 369 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-14 04:11:13,078 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:11:13,443 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 0 proven. 369 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-14 04:11:13,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [20414953] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:11:13,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [83192853] [2024-11-14 04:11:13,445 INFO L159 IcfgInterpreter]: Started Sifa with 28 locations of interest [2024-11-14 04:11:13,445 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:11:13,445 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:11:13,445 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:11:13,446 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:11:14,443 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 31 for LOIs [2024-11-14 04:11:14,447 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 65 for LOIs [2024-11-14 04:11:14,458 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:11:17,153 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '17005#(and (<= 0 |ULTIMATE.start_main_~x1~0#1|) (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~x2~0#1| 2147483647) (= |ULTIMATE.start_main_~y1~0#1| 0) (<= 1 ~counter~0) (<= |ULTIMATE.start_main_~y3~0#1| 0) (not (= |ULTIMATE.start_main_~y3~0#1| 0)) (<= 0 (+ |ULTIMATE.start_main_~x2~0#1| 2147483648)) (= (+ 2147483647 |ULTIMATE.start_main_~y3~0#1|) |ULTIMATE.start_main_~x1~0#1|))' at error location [2024-11-14 04:11:17,153 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:11:17,154 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:11:17,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2024-11-14 04:11:17,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335598236] [2024-11-14 04:11:17,154 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 04:11:17,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-14 04:11:17,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:11:17,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-14 04:11:17,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=1181, Unknown=0, NotChecked=0, Total=1406 [2024-11-14 04:11:17,157 INFO L87 Difference]: Start difference. First operand 538 states and 593 transitions. Second operand has 17 states, 16 states have (on average 16.5) internal successors, (264), 17 states have internal predecessors, (264), 16 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 16 states have call predecessors, (17), 16 states have call successors, (17) [2024-11-14 04:11:17,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:11:17,521 INFO L93 Difference]: Finished difference Result 895 states and 1013 transitions. [2024-11-14 04:11:17,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-14 04:11:17,522 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 16.5) internal successors, (264), 17 states have internal predecessors, (264), 16 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 16 states have call predecessors, (17), 16 states have call successors, (17) Word has length 150 [2024-11-14 04:11:17,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:11:17,527 INFO L225 Difference]: With dead ends: 895 [2024-11-14 04:11:17,527 INFO L226 Difference]: Without dead ends: 894 [2024-11-14 04:11:17,528 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 413 SyntacticMatches, 7 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 752 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=225, Invalid=1181, Unknown=0, NotChecked=0, Total=1406 [2024-11-14 04:11:17,528 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 104 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 04:11:17,530 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 235 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 04:11:17,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 894 states. [2024-11-14 04:11:17,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 894 to 842. [2024-11-14 04:11:17,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 791 states have (on average 1.0859671302149179) internal successors, (859), 793 states have internal predecessors, (859), 43 states have call successors, (43), 5 states have call predecessors, (43), 5 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2024-11-14 04:11:17,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 945 transitions. [2024-11-14 04:11:17,603 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 945 transitions. Word has length 150 [2024-11-14 04:11:17,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:11:17,604 INFO L471 AbstractCegarLoop]: Abstraction has 842 states and 945 transitions. [2024-11-14 04:11:17,604 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 16.5) internal successors, (264), 17 states have internal predecessors, (264), 16 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 16 states have call predecessors, (17), 16 states have call successors, (17) [2024-11-14 04:11:17,604 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 945 transitions. [2024-11-14 04:11:17,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-11-14 04:11:17,607 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:11:17,607 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:11:17,631 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-14 04:11:17,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:11:17,811 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-14 04:11:17,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:11:17,811 INFO L85 PathProgramCache]: Analyzing trace with hash 341645983, now seen corresponding path program 1 times [2024-11-14 04:11:17,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:11:17,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489716941] [2024-11-14 04:11:17,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:11:17,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:11:17,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:11:18,373 INFO L134 CoverageAnalysis]: Checked inductivity of 447 backedges. 0 proven. 403 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-14 04:11:18,374 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:11:18,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489716941] [2024-11-14 04:11:18,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489716941] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:11:18,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299283448] [2024-11-14 04:11:18,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:11:18,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:11:18,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:11:18,378 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:11:18,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-14 04:11:18,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:11:18,481 INFO L255 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-14 04:11:18,486 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:11:18,788 INFO L134 CoverageAnalysis]: Checked inductivity of 447 backedges. 0 proven. 445 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 04:11:18,788 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:11:19,346 INFO L134 CoverageAnalysis]: Checked inductivity of 447 backedges. 0 proven. 403 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-14 04:11:19,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [299283448] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:11:19,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [42888762] [2024-11-14 04:11:19,348 INFO L159 IcfgInterpreter]: Started Sifa with 36 locations of interest [2024-11-14 04:11:19,348 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:11:19,348 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:11:19,348 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:11:19,348 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:11:20,339 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 39 for LOIs [2024-11-14 04:11:20,350 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 65 for LOIs [2024-11-14 04:11:20,364 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:11:24,813 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '19968#(and (<= 0 |ULTIMATE.start_main_~x1~0#1|) (<= |ULTIMATE.start_main_~y3~0#1| 2147483647) (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_~x2~0#1_49| Int) (|v_ULTIMATE.start_main_~y1~0#1_105| Int)) (and (<= 0 |v_ULTIMATE.start_main_~y1~0#1_105|) (<= 0 (+ |v_ULTIMATE.start_main_~x2~0#1_49| 2147483648)) (<= |v_ULTIMATE.start_main_~x2~0#1_49| 2147483647) (<= (* |v_ULTIMATE.start_main_~y1~0#1_105| |v_ULTIMATE.start_main_~x2~0#1_49|) 2147483647) (<= 0 (+ (* |v_ULTIMATE.start_main_~y1~0#1_105| |v_ULTIMATE.start_main_~x2~0#1_49|) 2147483648)))) (<= 0 (+ |ULTIMATE.start_main_~y3~0#1| 4611686014132420609)) (<= 51 ~counter~0) (<= ~counter~0 2147483647) (<= |ULTIMATE.start_main_~x1~0#1| 2147483647))' at error location [2024-11-14 04:11:24,813 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:11:24,813 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:11:24,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 18] total 37 [2024-11-14 04:11:24,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714335133] [2024-11-14 04:11:24,813 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 04:11:24,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-14 04:11:24,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:11:24,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-14 04:11:24,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=584, Invalid=3706, Unknown=0, NotChecked=0, Total=4290 [2024-11-14 04:11:24,817 INFO L87 Difference]: Start difference. First operand 842 states and 945 transitions. Second operand has 37 states, 37 states have (on average 7.675675675675675) internal successors, (284), 37 states have internal predecessors, (284), 17 states have call successors, (27), 9 states have call predecessors, (27), 9 states have return successors, (27), 17 states have call predecessors, (27), 17 states have call successors, (27) [2024-11-14 04:11:25,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:11:25,994 INFO L93 Difference]: Finished difference Result 2511 states and 2907 transitions. [2024-11-14 04:11:25,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-11-14 04:11:25,996 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 7.675675675675675) internal successors, (284), 37 states have internal predecessors, (284), 17 states have call successors, (27), 9 states have call predecessors, (27), 9 states have return successors, (27), 17 states have call predecessors, (27), 17 states have call successors, (27) Word has length 163 [2024-11-14 04:11:25,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:11:26,006 INFO L225 Difference]: With dead ends: 2511 [2024-11-14 04:11:26,006 INFO L226 Difference]: Without dead ends: 2506 [2024-11-14 04:11:26,010 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 536 GetRequests, 427 SyntacticMatches, 15 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4371 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=1607, Invalid=7513, Unknown=0, NotChecked=0, Total=9120 [2024-11-14 04:11:26,012 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 237 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 04:11:26,012 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 597 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 04:11:26,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2506 states. [2024-11-14 04:11:26,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2506 to 2477. [2024-11-14 04:11:26,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2477 states, 2332 states have (on average 1.0934819897084047) internal successors, (2550), 2335 states have internal predecessors, (2550), 125 states have call successors, (125), 17 states have call predecessors, (125), 17 states have return successors, (125), 124 states have call predecessors, (125), 125 states have call successors, (125) [2024-11-14 04:11:26,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2477 states to 2477 states and 2800 transitions. [2024-11-14 04:11:26,281 INFO L78 Accepts]: Start accepts. Automaton has 2477 states and 2800 transitions. Word has length 163 [2024-11-14 04:11:26,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:11:26,282 INFO L471 AbstractCegarLoop]: Abstraction has 2477 states and 2800 transitions. [2024-11-14 04:11:26,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 7.675675675675675) internal successors, (284), 37 states have internal predecessors, (284), 17 states have call successors, (27), 9 states have call predecessors, (27), 9 states have return successors, (27), 17 states have call predecessors, (27), 17 states have call successors, (27) [2024-11-14 04:11:26,282 INFO L276 IsEmpty]: Start isEmpty. Operand 2477 states and 2800 transitions. [2024-11-14 04:11:26,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-11-14 04:11:26,286 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:11:26,286 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:11:26,311 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-14 04:11:26,486 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-14 04:11:26,487 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-14 04:11:26,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:11:26,488 INFO L85 PathProgramCache]: Analyzing trace with hash 342046177, now seen corresponding path program 2 times [2024-11-14 04:11:26,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:11:26,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730307177] [2024-11-14 04:11:26,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:11:26,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:11:26,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:11:26,916 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 6 proven. 431 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-14 04:11:26,917 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:11:26,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730307177] [2024-11-14 04:11:26,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730307177] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:11:26,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945381624] [2024-11-14 04:11:26,917 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 04:11:26,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:11:26,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:11:26,920 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:11:26,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-14 04:11:27,034 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-11-14 04:11:27,034 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 04:11:27,036 INFO L255 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-14 04:11:27,039 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:11:27,329 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 6 proven. 431 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-14 04:11:27,329 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:11:27,883 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 6 proven. 431 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-14 04:11:27,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945381624] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:11:27,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [282957309] [2024-11-14 04:11:27,885 INFO L159 IcfgInterpreter]: Started Sifa with 32 locations of interest [2024-11-14 04:11:27,886 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:11:27,886 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:11:27,886 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:11:27,886 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:11:28,852 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 39 for LOIs [2024-11-14 04:11:28,859 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 65 for LOIs [2024-11-14 04:11:28,876 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:11:32,297 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '26630#(and (<= 0 |ULTIMATE.start_main_~x1~0#1|) (<= |ULTIMATE.start_main_~y3~0#1| 2147483647) (<= 1 |#StackHeapBarrier|) (<= 1 ~counter~0) (<= |ULTIMATE.start_main_~x1~0#1| 2147483647))' at error location [2024-11-14 04:11:32,297 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:11:32,297 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:11:32,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 20 [2024-11-14 04:11:32,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214534609] [2024-11-14 04:11:32,297 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 04:11:32,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-14 04:11:32,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:11:32,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-14 04:11:32,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=252, Invalid=1818, Unknown=0, NotChecked=0, Total=2070 [2024-11-14 04:11:32,300 INFO L87 Difference]: Start difference. First operand 2477 states and 2800 transitions. Second operand has 21 states, 19 states have (on average 14.421052631578947) internal successors, (274), 21 states have internal predecessors, (274), 15 states have call successors, (16), 1 states have call predecessors, (16), 2 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) [2024-11-14 04:11:34,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:11:34,138 INFO L93 Difference]: Finished difference Result 2478 states and 2800 transitions. [2024-11-14 04:11:34,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-11-14 04:11:34,139 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 14.421052631578947) internal successors, (274), 21 states have internal predecessors, (274), 15 states have call successors, (16), 1 states have call predecessors, (16), 2 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) Word has length 163 [2024-11-14 04:11:34,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:11:34,149 INFO L225 Difference]: With dead ends: 2478 [2024-11-14 04:11:34,149 INFO L226 Difference]: Without dead ends: 2477 [2024-11-14 04:11:34,152 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 533 GetRequests, 439 SyntacticMatches, 15 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2758 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=1156, Invalid=5324, Unknown=0, NotChecked=0, Total=6480 [2024-11-14 04:11:34,152 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 200 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-14 04:11:34,152 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 227 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-14 04:11:34,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2477 states. [2024-11-14 04:11:34,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2477 to 2477. [2024-11-14 04:11:34,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2477 states, 2332 states have (on average 1.0643224699828473) internal successors, (2482), 2335 states have internal predecessors, (2482), 125 states have call successors, (125), 17 states have call predecessors, (125), 17 states have return successors, (125), 124 states have call predecessors, (125), 125 states have call successors, (125) [2024-11-14 04:11:34,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2477 states to 2477 states and 2732 transitions. [2024-11-14 04:11:34,420 INFO L78 Accepts]: Start accepts. Automaton has 2477 states and 2732 transitions. Word has length 163 [2024-11-14 04:11:34,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:11:34,421 INFO L471 AbstractCegarLoop]: Abstraction has 2477 states and 2732 transitions. [2024-11-14 04:11:34,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 14.421052631578947) internal successors, (274), 21 states have internal predecessors, (274), 15 states have call successors, (16), 1 states have call predecessors, (16), 2 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) [2024-11-14 04:11:34,421 INFO L276 IsEmpty]: Start isEmpty. Operand 2477 states and 2732 transitions. [2024-11-14 04:11:34,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2024-11-14 04:11:34,431 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:11:34,432 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:11:34,457 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-14 04:11:34,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-14 04:11:34,637 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-14 04:11:34,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:11:34,637 INFO L85 PathProgramCache]: Analyzing trace with hash -561720661, now seen corresponding path program 3 times [2024-11-14 04:11:34,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:11:34,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830946866] [2024-11-14 04:11:34,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:11:34,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:11:34,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:11:35,496 INFO L134 CoverageAnalysis]: Checked inductivity of 2137 backedges. 0 proven. 1925 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2024-11-14 04:11:35,497 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:11:35,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830946866] [2024-11-14 04:11:35,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830946866] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:11:35,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705235562] [2024-11-14 04:11:35,497 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 04:11:35,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:11:35,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:11:35,500 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:11:35,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-14 04:11:35,669 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 04:11:35,669 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 04:11:35,673 INFO L255 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-14 04:11:35,678 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:11:36,161 INFO L134 CoverageAnalysis]: Checked inductivity of 2137 backedges. 0 proven. 1925 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2024-11-14 04:11:36,162 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:11:37,055 INFO L134 CoverageAnalysis]: Checked inductivity of 2137 backedges. 0 proven. 1925 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2024-11-14 04:11:37,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [705235562] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:11:37,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2136066747] [2024-11-14 04:11:37,057 INFO L159 IcfgInterpreter]: Started Sifa with 28 locations of interest [2024-11-14 04:11:37,057 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:11:37,058 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:11:37,058 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:11:37,058 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:11:38,031 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 31 for LOIs [2024-11-14 04:11:38,036 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 65 for LOIs [2024-11-14 04:11:38,054 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:11:41,795 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '34205#(and (<= 0 |ULTIMATE.start_main_~x1~0#1|) (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~x2~0#1| 2147483647) (= |ULTIMATE.start_main_~y1~0#1| 0) (<= 1 ~counter~0) (<= |ULTIMATE.start_main_~y3~0#1| 0) (not (= |ULTIMATE.start_main_~y3~0#1| 0)) (<= 0 (+ |ULTIMATE.start_main_~x2~0#1| 2147483648)) (= (+ 2147483647 |ULTIMATE.start_main_~y3~0#1|) |ULTIMATE.start_main_~x1~0#1|))' at error location [2024-11-14 04:11:41,795 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:11:41,795 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:11:41,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 32 [2024-11-14 04:11:41,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353810204] [2024-11-14 04:11:41,795 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 04:11:41,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-14 04:11:41,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:11:41,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-14 04:11:41,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=614, Invalid=2248, Unknown=0, NotChecked=0, Total=2862 [2024-11-14 04:11:41,799 INFO L87 Difference]: Start difference. First operand 2477 states and 2732 transitions. Second operand has 33 states, 32 states have (on average 17.25) internal successors, (552), 33 states have internal predecessors, (552), 32 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 32 states have call predecessors, (33), 32 states have call successors, (33) [2024-11-14 04:11:42,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:11:42,853 INFO L93 Difference]: Finished difference Result 3186 states and 3566 transitions. [2024-11-14 04:11:42,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-14 04:11:42,854 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 17.25) internal successors, (552), 33 states have internal predecessors, (552), 32 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 32 states have call predecessors, (33), 32 states have call successors, (33) Word has length 318 [2024-11-14 04:11:42,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:11:42,866 INFO L225 Difference]: With dead ends: 3186 [2024-11-14 04:11:42,866 INFO L226 Difference]: Without dead ends: 3185 [2024-11-14 04:11:42,869 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 968 GetRequests, 901 SyntacticMatches, 15 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1850 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=614, Invalid=2248, Unknown=0, NotChecked=0, Total=2862 [2024-11-14 04:11:42,869 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 230 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-14 04:11:42,870 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 439 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-14 04:11:42,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3185 states. [2024-11-14 04:11:43,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3185 to 3069. [2024-11-14 04:11:43,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3069 states, 2893 states have (on average 1.073625993778085) internal successors, (3106), 2895 states have internal predecessors, (3106), 156 states have call successors, (156), 17 states have call predecessors, (156), 17 states have return successors, (156), 156 states have call predecessors, (156), 156 states have call successors, (156) [2024-11-14 04:11:43,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3069 states to 3069 states and 3418 transitions. [2024-11-14 04:11:43,144 INFO L78 Accepts]: Start accepts. Automaton has 3069 states and 3418 transitions. Word has length 318 [2024-11-14 04:11:43,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:11:43,145 INFO L471 AbstractCegarLoop]: Abstraction has 3069 states and 3418 transitions. [2024-11-14 04:11:43,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 17.25) internal successors, (552), 33 states have internal predecessors, (552), 32 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 32 states have call predecessors, (33), 32 states have call successors, (33) [2024-11-14 04:11:43,146 INFO L276 IsEmpty]: Start isEmpty. Operand 3069 states and 3418 transitions. [2024-11-14 04:11:43,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2024-11-14 04:11:43,158 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:11:43,158 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:11:43,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-14 04:11:43,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-14 04:11:43,359 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-14 04:11:43,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:11:43,360 INFO L85 PathProgramCache]: Analyzing trace with hash -445168543, now seen corresponding path program 3 times [2024-11-14 04:11:43,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:11:43,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329871026] [2024-11-14 04:11:43,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:11:43,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:11:43,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:11:44,506 INFO L134 CoverageAnalysis]: Checked inductivity of 2271 backedges. 14 proven. 2059 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2024-11-14 04:11:44,506 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:11:44,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329871026] [2024-11-14 04:11:44,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329871026] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:11:44,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086260212] [2024-11-14 04:11:44,507 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 04:11:44,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:11:44,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:11:44,510 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:11:44,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-14 04:11:44,673 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 04:11:44,673 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 04:11:44,676 INFO L255 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-14 04:11:44,684 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:11:45,312 INFO L134 CoverageAnalysis]: Checked inductivity of 2271 backedges. 14 proven. 2059 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2024-11-14 04:11:45,312 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:11:46,422 INFO L134 CoverageAnalysis]: Checked inductivity of 2271 backedges. 14 proven. 2059 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2024-11-14 04:11:46,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086260212] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:11:46,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [129514565] [2024-11-14 04:11:46,424 INFO L159 IcfgInterpreter]: Started Sifa with 32 locations of interest [2024-11-14 04:11:46,424 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:11:46,424 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:11:46,425 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:11:46,425 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:11:47,308 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 39 for LOIs [2024-11-14 04:11:47,317 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 65 for LOIs [2024-11-14 04:11:47,337 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:11:53,710 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '43212#(and (<= 0 |ULTIMATE.start_main_~x1~0#1|) (<= |ULTIMATE.start_main_~y3~0#1| 2147483647) (<= 1 |#StackHeapBarrier|) (<= 1 ~counter~0) (<= |ULTIMATE.start_main_~x1~0#1| 2147483647))' at error location [2024-11-14 04:11:53,711 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:11:53,711 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:11:53,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 36 [2024-11-14 04:11:53,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552916736] [2024-11-14 04:11:53,711 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 04:11:53,712 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-14 04:11:53,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:11:53,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-14 04:11:53,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=636, Invalid=3146, Unknown=0, NotChecked=0, Total=3782 [2024-11-14 04:11:53,715 INFO L87 Difference]: Start difference. First operand 3069 states and 3418 transitions. Second operand has 37 states, 35 states have (on average 16.057142857142857) internal successors, (562), 37 states have internal predecessors, (562), 31 states have call successors, (32), 1 states have call predecessors, (32), 2 states have return successors, (32), 31 states have call predecessors, (32), 31 states have call successors, (32) [2024-11-14 04:11:58,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:11:58,299 INFO L93 Difference]: Finished difference Result 9369 states and 10990 transitions. [2024-11-14 04:11:58,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2024-11-14 04:11:58,300 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 35 states have (on average 16.057142857142857) internal successors, (562), 37 states have internal predecessors, (562), 31 states have call successors, (32), 1 states have call predecessors, (32), 2 states have return successors, (32), 31 states have call predecessors, (32), 31 states have call successors, (32) Word has length 331 [2024-11-14 04:11:58,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:11:58,323 INFO L225 Difference]: With dead ends: 9369 [2024-11-14 04:11:58,323 INFO L226 Difference]: Without dead ends: 9303 [2024-11-14 04:11:58,327 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1085 GetRequests, 919 SyntacticMatches, 31 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8527 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=4372, Invalid=14260, Unknown=0, NotChecked=0, Total=18632 [2024-11-14 04:11:58,329 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 642 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 778 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 643 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:11:58,329 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [643 Valid, 320 Invalid, 894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 778 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-14 04:11:58,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9303 states. [2024-11-14 04:11:59,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9303 to 9286. [2024-11-14 04:11:59,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9286 states, 8795 states have (on average 1.0600341102899375) internal successors, (9323), 8797 states have internal predecessors, (9323), 471 states have call successors, (471), 17 states have call predecessors, (471), 17 states have return successors, (471), 471 states have call predecessors, (471), 471 states have call successors, (471) [2024-11-14 04:11:59,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9286 states to 9286 states and 10265 transitions. [2024-11-14 04:11:59,230 INFO L78 Accepts]: Start accepts. Automaton has 9286 states and 10265 transitions. Word has length 331 [2024-11-14 04:11:59,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:11:59,231 INFO L471 AbstractCegarLoop]: Abstraction has 9286 states and 10265 transitions. [2024-11-14 04:11:59,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 35 states have (on average 16.057142857142857) internal successors, (562), 37 states have internal predecessors, (562), 31 states have call successors, (32), 1 states have call predecessors, (32), 2 states have return successors, (32), 31 states have call predecessors, (32), 31 states have call successors, (32) [2024-11-14 04:11:59,232 INFO L276 IsEmpty]: Start isEmpty. Operand 9286 states and 10265 transitions. [2024-11-14 04:11:59,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 655 [2024-11-14 04:11:59,273 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:11:59,274 INFO L215 NwaCegarLoop]: trace histogram [31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 30, 30, 30, 30, 30, 30, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:11:59,300 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-14 04:11:59,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:11:59,478 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-14 04:11:59,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:11:59,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1169484373, now seen corresponding path program 4 times [2024-11-14 04:11:59,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:11:59,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460414286] [2024-11-14 04:11:59,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:11:59,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:11:59,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:12:02,887 INFO L134 CoverageAnalysis]: Checked inductivity of 9617 backedges. 0 proven. 8685 refuted. 0 times theorem prover too weak. 932 trivial. 0 not checked. [2024-11-14 04:12:02,887 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:12:02,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460414286] [2024-11-14 04:12:02,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460414286] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:12:02,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761632058] [2024-11-14 04:12:02,887 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-14 04:12:02,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:12:02,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:12:02,890 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:12:02,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-14 04:12:03,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:12:03,123 INFO L255 TraceCheckSpWp]: Trace formula consists of 997 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-14 04:12:03,134 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:12:04,024 INFO L134 CoverageAnalysis]: Checked inductivity of 9617 backedges. 0 proven. 8685 refuted. 0 times theorem prover too weak. 932 trivial. 0 not checked. [2024-11-14 04:12:04,024 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:12:06,475 INFO L134 CoverageAnalysis]: Checked inductivity of 9617 backedges. 0 proven. 8685 refuted. 0 times theorem prover too weak. 932 trivial. 0 not checked. [2024-11-14 04:12:06,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [761632058] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:12:06,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [79663492] [2024-11-14 04:12:06,478 INFO L159 IcfgInterpreter]: Started Sifa with 28 locations of interest [2024-11-14 04:12:06,478 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:12:06,478 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:12:06,478 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:12:06,478 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:12:07,531 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 31 for LOIs [2024-11-14 04:12:07,536 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 65 for LOIs [2024-11-14 04:12:07,555 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:12:14,208 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '68030#(and (<= 0 |ULTIMATE.start_main_~x1~0#1|) (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~x2~0#1| 2147483647) (= |ULTIMATE.start_main_~y1~0#1| 0) (<= 1 ~counter~0) (<= |ULTIMATE.start_main_~y3~0#1| 0) (not (= |ULTIMATE.start_main_~y3~0#1| 0)) (<= 0 (+ |ULTIMATE.start_main_~x2~0#1| 2147483648)) (= (+ 2147483647 |ULTIMATE.start_main_~y3~0#1|) |ULTIMATE.start_main_~x1~0#1|))' at error location [2024-11-14 04:12:14,209 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:12:14,209 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:12:14,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 64 [2024-11-14 04:12:14,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223813290] [2024-11-14 04:12:14,209 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 04:12:14,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2024-11-14 04:12:14,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:12:14,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2024-11-14 04:12:14,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2169, Invalid=5141, Unknown=0, NotChecked=0, Total=7310 [2024-11-14 04:12:14,217 INFO L87 Difference]: Start difference. First operand 9286 states and 10265 transitions. Second operand has 65 states, 64 states have (on average 17.625) internal successors, (1128), 65 states have internal predecessors, (1128), 64 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 64 states have call predecessors, (65), 64 states have call successors, (65) [2024-11-14 04:12:17,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:12:17,485 INFO L93 Difference]: Finished difference Result 10747 states and 11981 transitions. [2024-11-14 04:12:17,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-11-14 04:12:17,486 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 64 states have (on average 17.625) internal successors, (1128), 65 states have internal predecessors, (1128), 64 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 64 states have call predecessors, (65), 64 states have call successors, (65) Word has length 654 [2024-11-14 04:12:17,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:12:17,520 INFO L225 Difference]: With dead ends: 10747 [2024-11-14 04:12:17,520 INFO L226 Difference]: Without dead ends: 10746 [2024-11-14 04:12:17,522 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1992 GetRequests, 1877 SyntacticMatches, 31 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5216 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=2169, Invalid=5141, Unknown=0, NotChecked=0, Total=7310 [2024-11-14 04:12:17,522 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 478 mSDsluCounter, 868 mSDsCounter, 0 mSdLazyCounter, 870 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 907 SdHoareTripleChecker+Invalid, 877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 870 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-14 04:12:17,523 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [478 Valid, 907 Invalid, 877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 870 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-14 04:12:17,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10746 states. [2024-11-14 04:12:18,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10746 to 10502. [2024-11-14 04:12:18,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10502 states, 9947 states have (on average 1.0659495325223685) internal successors, (10603), 9949 states have internal predecessors, (10603), 535 states have call successors, (535), 17 states have call predecessors, (535), 17 states have return successors, (535), 535 states have call predecessors, (535), 535 states have call successors, (535) [2024-11-14 04:12:18,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10502 states to 10502 states and 11673 transitions. [2024-11-14 04:12:18,224 INFO L78 Accepts]: Start accepts. Automaton has 10502 states and 11673 transitions. Word has length 654 [2024-11-14 04:12:18,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:12:18,226 INFO L471 AbstractCegarLoop]: Abstraction has 10502 states and 11673 transitions. [2024-11-14 04:12:18,227 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 64 states have (on average 17.625) internal successors, (1128), 65 states have internal predecessors, (1128), 64 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 64 states have call predecessors, (65), 64 states have call successors, (65) [2024-11-14 04:12:18,227 INFO L276 IsEmpty]: Start isEmpty. Operand 10502 states and 11673 transitions. [2024-11-14 04:12:18,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 668 [2024-11-14 04:12:18,254 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:12:18,254 INFO L215 NwaCegarLoop]: trace histogram [32, 32, 32, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 30, 30, 30, 30, 30, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:12:18,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-11-14 04:12:18,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-11-14 04:12:18,456 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-14 04:12:18,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:12:18,457 INFO L85 PathProgramCache]: Analyzing trace with hash -416299489, now seen corresponding path program 2 times [2024-11-14 04:12:18,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:12:18,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72886241] [2024-11-14 04:12:18,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:12:18,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:12:18,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:12:25,038 INFO L134 CoverageAnalysis]: Checked inductivity of 9771 backedges. 0 proven. 8839 refuted. 0 times theorem prover too weak. 932 trivial. 0 not checked. [2024-11-14 04:12:25,042 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:12:25,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72886241] [2024-11-14 04:12:25,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72886241] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:12:25,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939291191] [2024-11-14 04:12:25,043 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 04:12:25,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:12:25,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:12:25,045 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:12:25,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-14 04:12:25,458 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 32 check-sat command(s) [2024-11-14 04:12:25,458 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 04:12:25,465 INFO L255 TraceCheckSpWp]: Trace formula consists of 1020 conjuncts, 65 conjuncts are in the unsatisfiable core [2024-11-14 04:12:25,477 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:12:26,445 INFO L134 CoverageAnalysis]: Checked inductivity of 9771 backedges. 0 proven. 9769 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 04:12:26,446 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:12:30,893 INFO L134 CoverageAnalysis]: Checked inductivity of 9771 backedges. 0 proven. 8839 refuted. 0 times theorem prover too weak. 932 trivial. 0 not checked. [2024-11-14 04:12:30,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939291191] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:12:30,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [130900308] [2024-11-14 04:12:30,896 INFO L159 IcfgInterpreter]: Started Sifa with 36 locations of interest [2024-11-14 04:12:30,896 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:12:30,896 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:12:30,897 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:12:30,897 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:12:31,623 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 39 for LOIs [2024-11-14 04:12:31,630 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 65 for LOIs [2024-11-14 04:12:31,642 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:12:43,872 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '95661#(and (<= 0 |ULTIMATE.start_main_~x1~0#1|) (<= 0 (+ |ULTIMATE.start_main_~y3~0#1| 2147483648)) (<= |ULTIMATE.start_main_~y3~0#1| 2147483647) (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_~y1~0#1_132| Int) (|v_ULTIMATE.start_main_~x2~0#1_56| Int)) (and (<= (* |v_ULTIMATE.start_main_~y1~0#1_132| |v_ULTIMATE.start_main_~x2~0#1_56|) 2147483647) (<= 0 |v_ULTIMATE.start_main_~y1~0#1_132|) (<= |v_ULTIMATE.start_main_~x2~0#1_56| 2147483647) (<= 0 (+ |v_ULTIMATE.start_main_~x2~0#1_56| 2147483648)) (<= 0 (+ (* |v_ULTIMATE.start_main_~y1~0#1_132| |v_ULTIMATE.start_main_~x2~0#1_56|) 2147483648)))) (<= 51 ~counter~0) (<= ~counter~0 2147483647) (<= |ULTIMATE.start_main_~x1~0#1| 2147483647))' at error location [2024-11-14 04:12:43,872 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:12:43,872 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:12:43,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 65, 66] total 105 [2024-11-14 04:12:43,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280895276] [2024-11-14 04:12:43,873 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 04:12:43,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 105 states [2024-11-14 04:12:43,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:12:43,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2024-11-14 04:12:43,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3234, Invalid=14588, Unknown=0, NotChecked=0, Total=17822 [2024-11-14 04:12:43,880 INFO L87 Difference]: Start difference. First operand 10502 states and 11673 transitions. Second operand has 105 states, 105 states have (on average 8.961904761904762) internal successors, (941), 105 states have internal predecessors, (941), 51 states have call successors, (86), 33 states have call predecessors, (86), 33 states have return successors, (86), 51 states have call predecessors, (86), 51 states have call successors, (86) [2024-11-14 04:12:52,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:12:52,837 INFO L93 Difference]: Finished difference Result 24359 states and 28318 transitions. [2024-11-14 04:12:52,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2024-11-14 04:12:52,838 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 105 states have (on average 8.961904761904762) internal successors, (941), 105 states have internal predecessors, (941), 51 states have call successors, (86), 33 states have call predecessors, (86), 33 states have return successors, (86), 51 states have call predecessors, (86), 51 states have call successors, (86) Word has length 667 [2024-11-14 04:12:52,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:12:52,967 INFO L225 Difference]: With dead ends: 24359 [2024-11-14 04:12:52,967 INFO L226 Difference]: Without dead ends: 24354 [2024-11-14 04:12:52,975 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2164 GetRequests, 1843 SyntacticMatches, 91 SemanticMatches, 230 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27095 ImplicationChecksByTransitivity, 23.5s TimeCoverageRelationStatistics Valid=13233, Invalid=40359, Unknown=0, NotChecked=0, Total=53592 [2024-11-14 04:12:52,979 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 1035 mSDsluCounter, 1193 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1035 SdHoareTripleChecker+Valid, 1226 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-14 04:12:52,980 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1035 Valid, 1226 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 539 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-14 04:12:52,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24354 states. [2024-11-14 04:12:54,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24354 to 24328. [2024-11-14 04:12:54,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24328 states, 23017 states have (on average 1.0891949428683148) internal successors, (25070), 23019 states have internal predecessors, (25070), 1257 states have call successors, (1257), 51 states have call predecessors, (1257), 51 states have return successors, (1257), 1257 states have call predecessors, (1257), 1257 states have call successors, (1257) [2024-11-14 04:12:54,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24328 states to 24328 states and 27584 transitions. [2024-11-14 04:12:54,851 INFO L78 Accepts]: Start accepts. Automaton has 24328 states and 27584 transitions. Word has length 667 [2024-11-14 04:12:54,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:12:54,853 INFO L471 AbstractCegarLoop]: Abstraction has 24328 states and 27584 transitions. [2024-11-14 04:12:54,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 105 states, 105 states have (on average 8.961904761904762) internal successors, (941), 105 states have internal predecessors, (941), 51 states have call successors, (86), 33 states have call predecessors, (86), 33 states have return successors, (86), 51 states have call predecessors, (86), 51 states have call successors, (86) [2024-11-14 04:12:54,854 INFO L276 IsEmpty]: Start isEmpty. Operand 24328 states and 27584 transitions. [2024-11-14 04:12:54,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 668 [2024-11-14 04:12:54,876 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:12:54,877 INFO L215 NwaCegarLoop]: trace histogram [32, 32, 32, 32, 32, 32, 32, 31, 31, 31, 31, 31, 31, 31, 31, 31, 30, 30, 30, 30, 30, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:12:54,903 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-14 04:12:55,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:12:55,081 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-14 04:12:55,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:12:55,082 INFO L85 PathProgramCache]: Analyzing trace with hash -415899295, now seen corresponding path program 4 times [2024-11-14 04:12:55,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:12:55,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314266172] [2024-11-14 04:12:55,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:12:55,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:12:55,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:12:58,831 INFO L134 CoverageAnalysis]: Checked inductivity of 9895 backedges. 30 proven. 8963 refuted. 0 times theorem prover too weak. 902 trivial. 0 not checked. [2024-11-14 04:12:58,831 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:12:58,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314266172] [2024-11-14 04:12:58,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314266172] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:12:58,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [311966278] [2024-11-14 04:12:58,832 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-14 04:12:58,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:12:58,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:12:58,834 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:12:58,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-14 04:12:59,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:12:59,156 INFO L255 TraceCheckSpWp]: Trace formula consists of 1020 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-14 04:12:59,174 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:13:00,408 INFO L134 CoverageAnalysis]: Checked inductivity of 9895 backedges. 30 proven. 8963 refuted. 0 times theorem prover too weak. 902 trivial. 0 not checked. [2024-11-14 04:13:00,409 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:13:03,697 INFO L134 CoverageAnalysis]: Checked inductivity of 9895 backedges. 30 proven. 8963 refuted. 0 times theorem prover too weak. 902 trivial. 0 not checked. [2024-11-14 04:13:03,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [311966278] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:13:03,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [589454495] [2024-11-14 04:13:03,699 INFO L159 IcfgInterpreter]: Started Sifa with 32 locations of interest [2024-11-14 04:13:03,700 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:13:03,700 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:13:03,700 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:13:03,700 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:13:04,613 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 39 for LOIs [2024-11-14 04:13:04,621 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 65 for LOIs [2024-11-14 04:13:04,633 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:13:16,860 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '153961#(and (<= 0 |ULTIMATE.start_main_~x1~0#1|) (<= |ULTIMATE.start_main_~y3~0#1| 2147483647) (<= 1 |#StackHeapBarrier|) (<= 1 ~counter~0) (<= |ULTIMATE.start_main_~x1~0#1| 2147483647))' at error location [2024-11-14 04:13:16,860 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:13:16,860 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:13:16,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 68 [2024-11-14 04:13:16,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818400412] [2024-11-14 04:13:16,861 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 04:13:16,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2024-11-14 04:13:16,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:13:16,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2024-11-14 04:13:16,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2156, Invalid=6586, Unknown=0, NotChecked=0, Total=8742 [2024-11-14 04:13:16,865 INFO L87 Difference]: Start difference. First operand 24328 states and 27584 transitions. Second operand has 69 states, 67 states have (on average 16.98507462686567) internal successors, (1138), 69 states have internal predecessors, (1138), 63 states have call successors, (64), 1 states have call predecessors, (64), 2 states have return successors, (64), 63 states have call predecessors, (64), 63 states have call successors, (64) [2024-11-14 04:13:30,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:13:30,940 INFO L93 Difference]: Finished difference Result 38081 states and 44191 transitions. [2024-11-14 04:13:30,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 221 states. [2024-11-14 04:13:30,940 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 67 states have (on average 16.98507462686567) internal successors, (1138), 69 states have internal predecessors, (1138), 63 states have call successors, (64), 1 states have call predecessors, (64), 2 states have return successors, (64), 63 states have call predecessors, (64), 63 states have call successors, (64) Word has length 667 [2024-11-14 04:13:30,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:13:31,043 INFO L225 Difference]: With dead ends: 38081 [2024-11-14 04:13:31,043 INFO L226 Difference]: Without dead ends: 38027 [2024-11-14 04:13:31,062 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2189 GetRequests, 1879 SyntacticMatches, 63 SemanticMatches, 247 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28799 ImplicationChecksByTransitivity, 23.8s TimeCoverageRelationStatistics Valid=17316, Invalid=44436, Unknown=0, NotChecked=0, Total=61752 [2024-11-14 04:13:31,062 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 1364 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 1308 mSolverCounterSat, 278 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1365 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 1586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 278 IncrementalHoareTripleChecker+Valid, 1308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-14 04:13:31,063 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1365 Valid, 479 Invalid, 1586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [278 Valid, 1308 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-14 04:13:31,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38027 states. [2024-11-14 04:13:34,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38027 to 38010. [2024-11-14 04:13:34,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38010 states, 35997 states have (on average 1.0577825929938607) internal successors, (38077), 35999 states have internal predecessors, (38077), 1959 states have call successors, (1959), 51 states have call predecessors, (1959), 51 states have return successors, (1959), 1959 states have call predecessors, (1959), 1959 states have call successors, (1959) [2024-11-14 04:13:34,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38010 states to 38010 states and 41995 transitions. [2024-11-14 04:13:34,272 INFO L78 Accepts]: Start accepts. Automaton has 38010 states and 41995 transitions. Word has length 667 [2024-11-14 04:13:34,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:13:34,273 INFO L471 AbstractCegarLoop]: Abstraction has 38010 states and 41995 transitions. [2024-11-14 04:13:34,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 67 states have (on average 16.98507462686567) internal successors, (1138), 69 states have internal predecessors, (1138), 63 states have call successors, (64), 1 states have call predecessors, (64), 2 states have return successors, (64), 63 states have call predecessors, (64), 63 states have call successors, (64) [2024-11-14 04:13:34,274 INFO L276 IsEmpty]: Start isEmpty. Operand 38010 states and 41995 transitions. [2024-11-14 04:13:34,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1327 [2024-11-14 04:13:34,356 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:13:34,357 INFO L215 NwaCegarLoop]: trace histogram [63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 63, 62, 62, 62, 62, 62, 62, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:13:34,385 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-11-14 04:13:34,561 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:13:34,561 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-14 04:13:34,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:13:34,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1128111019, now seen corresponding path program 5 times [2024-11-14 04:13:34,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:13:34,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472600298] [2024-11-14 04:13:34,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:13:34,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:13:34,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:13:45,101 INFO L134 CoverageAnalysis]: Checked inductivity of 40705 backedges. 0 proven. 36797 refuted. 0 times theorem prover too weak. 3908 trivial. 0 not checked. [2024-11-14 04:13:45,101 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:13:45,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472600298] [2024-11-14 04:13:45,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472600298] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:13:45,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [537895014] [2024-11-14 04:13:45,102 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 04:13:45,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:13:45,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:13:45,105 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:13:45,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b079bdbe-1812-4626-8b9b-53b7297d2b3c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-14 04:13:46,005 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 63 check-sat command(s) [2024-11-14 04:13:46,005 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 04:13:46,018 INFO L255 TraceCheckSpWp]: Trace formula consists of 1989 conjuncts, 127 conjuncts are in the unsatisfiable core [2024-11-14 04:13:46,040 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:13:58,523 INFO L134 CoverageAnalysis]: Checked inductivity of 40705 backedges. 40641 proven. 62 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 04:13:58,523 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:14:09,719 INFO L134 CoverageAnalysis]: Checked inductivity of 40705 backedges. 36735 proven. 62 refuted. 0 times theorem prover too weak. 3908 trivial. 0 not checked. [2024-11-14 04:14:09,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [537895014] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:14:09,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [911911168] [2024-11-14 04:14:09,721 INFO L159 IcfgInterpreter]: Started Sifa with 28 locations of interest [2024-11-14 04:14:09,721 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:14:09,721 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:14:09,721 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:14:09,721 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:14:10,563 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 31 for LOIs [2024-11-14 04:14:10,566 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 65 for LOIs [2024-11-14 04:14:10,578 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:14:46,051 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '246709#(and (<= 0 |ULTIMATE.start_main_~x1~0#1|) (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~x2~0#1| 2147483647) (= |ULTIMATE.start_main_~y1~0#1| 0) (<= 1 ~counter~0) (<= |ULTIMATE.start_main_~y3~0#1| 0) (not (= |ULTIMATE.start_main_~y3~0#1| 0)) (<= 0 (+ |ULTIMATE.start_main_~x2~0#1| 2147483648)) (= (+ 2147483647 |ULTIMATE.start_main_~y3~0#1|) |ULTIMATE.start_main_~x1~0#1|))' at error location [2024-11-14 04:14:46,051 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:14:46,051 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:14:46,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 127, 128] total 215 [2024-11-14 04:14:46,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889740619] [2024-11-14 04:14:46,052 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 04:14:46,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 215 states [2024-11-14 04:14:46,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:14:46,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 215 interpolants. [2024-11-14 04:14:46,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8330, Invalid=47130, Unknown=0, NotChecked=0, Total=55460 [2024-11-14 04:14:46,062 INFO L87 Difference]: Start difference. First operand 38010 states and 41995 transitions. Second operand has 215 states, 215 states have (on average 11.851162790697675) internal successors, (2548), 215 states have internal predecessors, (2548), 140 states have call successors, (195), 65 states have call predecessors, (195), 65 states have return successors, (195), 140 states have call predecessors, (195), 140 states have call successors, (195)