./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound10.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_d8c62580-bbbb-41e0-bf99-dbcfed9c1fb3/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c62580-bbbb-41e0-bf99-dbcfed9c1fb3/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_d8c62580-bbbb-41e0-bf99-dbcfed9c1fb3/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c62580-bbbb-41e0-bf99-dbcfed9c1fb3/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c62580-bbbb-41e0-bf99-dbcfed9c1fb3/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_d8c62580-bbbb-41e0-bf99-dbcfed9c1fb3/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 386c3e7d1ea789c9c3d2e7e38148627ea5f6d60be4bd0eecc87000a545db7275 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 04:17:28,550 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 04:17:28,632 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c62580-bbbb-41e0-bf99-dbcfed9c1fb3/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Overflow-32bit-Taipan_Default.epf [2024-11-14 04:17:28,638 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 04:17:28,638 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 04:17:28,678 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 04:17:28,680 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 04:17:28,681 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 04:17:28,681 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 04:17:28,682 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 04:17:28,682 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 04:17:28,683 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 04:17:28,683 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 04:17:28,683 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 04:17:28,683 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 04:17:28,683 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 04:17:28,683 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 04:17:28,683 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 04:17:28,684 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 04:17:28,684 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 04:17:28,684 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 04:17:28,684 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 04:17:28,684 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 04:17:28,684 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 04:17:28,684 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 04:17:28,684 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 04:17:28,685 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 04:17:28,685 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 04:17:28,685 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 04:17:28,685 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 04:17:28,685 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 04:17:28,685 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 04:17:28,685 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-14 04:17:28,687 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-14 04:17:28,688 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 04:17:28,688 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 04:17:28,688 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 04:17:28,688 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 04:17:28,688 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 04:17:28,688 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 04:17:28,689 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:17:28,689 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 04:17:28,689 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 04:17:28,689 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 04:17:28,690 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 04:17:28,690 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 04:17:28,690 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 04:17:28,690 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 04:17:28,690 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 04:17:28,690 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_d8c62580-bbbb-41e0-bf99-dbcfed9c1fb3/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 -> 386c3e7d1ea789c9c3d2e7e38148627ea5f6d60be4bd0eecc87000a545db7275 [2024-11-14 04:17:29,039 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 04:17:29,054 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 04:17:29,057 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 04:17:29,058 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 04:17:29,059 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 04:17:29,060 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c62580-bbbb-41e0-bf99-dbcfed9c1fb3/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound10.c Unable to find full path for "g++" [2024-11-14 04:17:31,087 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 04:17:31,325 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 04:17:31,326 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c62580-bbbb-41e0-bf99-dbcfed9c1fb3/sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound10.c [2024-11-14 04:17:31,332 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c62580-bbbb-41e0-bf99-dbcfed9c1fb3/bin/utaipan-verify-sOmjnqqW8E/data/2f7ff4179/605ebe7e564b43f894ba33ded184bb02/FLAGdc48efb91 [2024-11-14 04:17:31,348 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c62580-bbbb-41e0-bf99-dbcfed9c1fb3/bin/utaipan-verify-sOmjnqqW8E/data/2f7ff4179/605ebe7e564b43f894ba33ded184bb02 [2024-11-14 04:17:31,350 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 04:17:31,353 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 04:17:31,357 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 04:17:31,358 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 04:17:31,363 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 04:17:31,364 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:17:31" (1/1) ... [2024-11-14 04:17:31,366 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d61fdce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:17:31, skipping insertion in model container [2024-11-14 04:17:31,366 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:17:31" (1/1) ... [2024-11-14 04:17:31,382 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 04:17:31,578 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:17:31,587 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 04:17:31,600 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:17:31,616 INFO L204 MainTranslator]: Completed translation [2024-11-14 04:17:31,616 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:17:31 WrapperNode [2024-11-14 04:17:31,616 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 04:17:31,617 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 04:17:31,618 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 04:17:31,618 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 04:17:31,624 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:17:31" (1/1) ... [2024-11-14 04:17:31,631 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:17:31" (1/1) ... [2024-11-14 04:17:31,646 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 44 [2024-11-14 04:17:31,647 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 04:17:31,648 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 04:17:31,648 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 04:17:31,649 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 04:17:31,656 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:17:31" (1/1) ... [2024-11-14 04:17:31,657 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:17:31" (1/1) ... [2024-11-14 04:17:31,658 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:17:31" (1/1) ... [2024-11-14 04:17:31,658 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:17:31" (1/1) ... [2024-11-14 04:17:31,662 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:17:31" (1/1) ... [2024-11-14 04:17:31,665 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:17:31" (1/1) ... [2024-11-14 04:17:31,666 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:17:31" (1/1) ... [2024-11-14 04:17:31,667 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:17:31" (1/1) ... [2024-11-14 04:17:31,668 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 04:17:31,669 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 04:17:31,669 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 04:17:31,670 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 04:17:31,671 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:17:31" (1/1) ... [2024-11-14 04:17:31,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:17:31,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c62580-bbbb-41e0-bf99-dbcfed9c1fb3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:17:31,711 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c62580-bbbb-41e0-bf99-dbcfed9c1fb3/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 04:17:31,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c62580-bbbb-41e0-bf99-dbcfed9c1fb3/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 04:17:31,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 04:17:31,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 04:17:31,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 04:17:31,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 04:17:31,743 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-14 04:17:31,743 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-14 04:17:31,816 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 04:17:31,818 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 04:17:31,939 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-11-14 04:17:31,939 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 04:17:31,983 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 04:17:31,983 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-14 04:17:31,983 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:17:31 BoogieIcfgContainer [2024-11-14 04:17:31,984 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 04:17:31,986 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 04:17:31,987 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 04:17:31,991 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 04:17:31,991 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 04:17:31" (1/3) ... [2024-11-14 04:17:31,992 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@707b7a4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:17:31, skipping insertion in model container [2024-11-14 04:17:31,992 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:17:31" (2/3) ... [2024-11-14 04:17:31,993 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@707b7a4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:17:31, skipping insertion in model container [2024-11-14 04:17:31,993 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:17:31" (3/3) ... [2024-11-14 04:17:31,994 INFO L112 eAbstractionObserver]: Analyzing ICFG freire1_valuebound10.c [2024-11-14 04:17:32,013 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 04:17:32,015 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG freire1_valuebound10.c that has 2 procedures, 21 locations, 1 initial locations, 1 loop locations, and 6 error locations. [2024-11-14 04:17:32,080 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 04:17:32,097 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;@371b2a7d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 04:17:32,098 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-14 04:17:32,103 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 17 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 04:17:32,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-14 04:17:32,109 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:17:32,110 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-14 04:17:32,110 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-14 04:17:32,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:17:32,116 INFO L85 PathProgramCache]: Analyzing trace with hash 98567, now seen corresponding path program 1 times [2024-11-14 04:17:32,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:17:32,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639122205] [2024-11-14 04:17:32,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:17:32,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:17:32,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:17:32,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:17:32,246 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:17:32,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639122205] [2024-11-14 04:17:32,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639122205] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:17:32,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:17:32,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-14 04:17:32,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085839143] [2024-11-14 04:17:32,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:17:32,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-14 04:17:32,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:17:32,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-14 04:17:32,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-14 04:17:32,282 INFO L87 Difference]: Start difference. First operand has 21 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 17 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 1 states have (on average 3.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:17:32,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:17:32,326 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2024-11-14 04:17:32,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-14 04:17:32,329 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 3.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2024-11-14 04:17:32,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:17:32,334 INFO L225 Difference]: With dead ends: 29 [2024-11-14 04:17:32,334 INFO L226 Difference]: Without dead ends: 16 [2024-11-14 04:17:32,337 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 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 04:17:32,344 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 04:17:32,345 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 17 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 04:17:32,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-11-14 04:17:32,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2024-11-14 04:17:32,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 10 states have (on average 1.4) internal successors, (14), 13 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 04:17:32,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2024-11-14 04:17:32,393 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 3 [2024-11-14 04:17:32,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:17:32,393 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2024-11-14 04:17:32,393 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 3.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:17:32,393 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2024-11-14 04:17:32,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-14 04:17:32,394 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:17:32,394 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-14 04:17:32,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 04:17:32,396 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-14 04:17:32,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:17:32,399 INFO L85 PathProgramCache]: Analyzing trace with hash 3055628, now seen corresponding path program 1 times [2024-11-14 04:17:32,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:17:32,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90584662] [2024-11-14 04:17:32,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:17:32,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:17:32,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 04:17:32,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [353412643] [2024-11-14 04:17:32,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:17:32,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:17:32,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c62580-bbbb-41e0-bf99-dbcfed9c1fb3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:17:32,427 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c62580-bbbb-41e0-bf99-dbcfed9c1fb3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:17:32,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c62580-bbbb-41e0-bf99-dbcfed9c1fb3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 04:17:32,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:17:32,501 INFO L255 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 04:17:32,508 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:17:32,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:17:32,544 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:17:32,544 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:17:32,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90584662] [2024-11-14 04:17:32,545 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 04:17:32,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353412643] [2024-11-14 04:17:32,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [353412643] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:17:32,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:17:32,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-14 04:17:32,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007707877] [2024-11-14 04:17:32,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:17:32,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:17:32,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:17:32,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:17:32,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:17:32,548 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:17:32,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:17:32,601 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2024-11-14 04:17:32,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:17:32,602 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-14 04:17:32,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:17:32,603 INFO L225 Difference]: With dead ends: 29 [2024-11-14 04:17:32,603 INFO L226 Difference]: Without dead ends: 23 [2024-11-14 04:17:32,603 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:17:32,604 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 5 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 04:17:32,605 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 14 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 04:17:32,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-14 04:17:32,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-11-14 04:17:32,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 16 states have (on average 1.25) internal successors, (20), 19 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 04:17:32,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2024-11-14 04:17:32,610 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 4 [2024-11-14 04:17:32,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:17:32,611 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2024-11-14 04:17:32,611 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:17:32,611 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2024-11-14 04:17:32,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-14 04:17:32,613 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:17:32,613 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:17:32,630 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c62580-bbbb-41e0-bf99-dbcfed9c1fb3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-14 04:17:32,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c62580-bbbb-41e0-bf99-dbcfed9c1fb3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-11-14 04:17:32,815 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-14 04:17:32,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:17:32,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1614454891, now seen corresponding path program 1 times [2024-11-14 04:17:32,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:17:32,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915001170] [2024-11-14 04:17:32,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:17:32,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:17:32,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 04:17:32,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1297803123] [2024-11-14 04:17:32,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:17:32,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:17:32,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c62580-bbbb-41e0-bf99-dbcfed9c1fb3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:17:32,850 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c62580-bbbb-41e0-bf99-dbcfed9c1fb3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:17:32,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c62580-bbbb-41e0-bf99-dbcfed9c1fb3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-14 04:17:32,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:17:32,928 INFO L255 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 04:17:32,929 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:17:33,016 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:17:33,016 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:17:33,137 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:17:33,137 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:17:33,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915001170] [2024-11-14 04:17:33,138 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 04:17:33,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1297803123] [2024-11-14 04:17:33,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1297803123] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:17:33,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [352886169] [2024-11-14 04:17:33,162 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-14 04:17:33,163 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:17:33,167 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:17:33,172 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:17:33,172 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:17:34,073 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 9 for LOIs [2024-11-14 04:17:34,076 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:17:34,397 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '239#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_~r~0#1_36| Int)) (and (<= |v_ULTIMATE.start_main_~r~0#1_36| 2147483647) (<= 0 |v_ULTIMATE.start_main_~r~0#1_36|) (<= 2147483648 (* |v_ULTIMATE.start_main_~r~0#1_36| |v_ULTIMATE.start_main_~r~0#1_36|)))))' at error location [2024-11-14 04:17:34,397 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:17:34,397 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-14 04:17:34,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2024-11-14 04:17:34,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692888559] [2024-11-14 04:17:34,398 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-14 04:17:34,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 04:17:34,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:17:34,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 04:17:34,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-11-14 04:17:34,399 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 04:17:34,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:17:34,522 INFO L93 Difference]: Finished difference Result 45 states and 56 transitions. [2024-11-14 04:17:34,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 04:17:34,523 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 13 [2024-11-14 04:17:34,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:17:34,524 INFO L225 Difference]: With dead ends: 45 [2024-11-14 04:17:34,524 INFO L226 Difference]: Without dead ends: 35 [2024-11-14 04:17:34,524 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-11-14 04:17:34,525 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 19 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:17:34,525 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 24 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:17:34,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-14 04:17:34,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2024-11-14 04:17:34,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 29 states have (on average 1.0344827586206897) internal successors, (30), 29 states have internal predecessors, (30), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-14 04:17:34,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2024-11-14 04:17:34,533 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 13 [2024-11-14 04:17:34,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:17:34,534 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2024-11-14 04:17:34,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 04:17:34,534 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2024-11-14 04:17:34,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-14 04:17:34,535 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:17:34,536 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1] [2024-11-14 04:17:34,557 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c62580-bbbb-41e0-bf99-dbcfed9c1fb3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-14 04:17:34,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c62580-bbbb-41e0-bf99-dbcfed9c1fb3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-14 04:17:34,740 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-14 04:17:34,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:17:34,742 INFO L85 PathProgramCache]: Analyzing trace with hash 735915084, now seen corresponding path program 2 times [2024-11-14 04:17:34,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:17:34,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117692932] [2024-11-14 04:17:34,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:17:34,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:17:34,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 04:17:34,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1589959523] [2024-11-14 04:17:34,801 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 04:17:34,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:17:34,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c62580-bbbb-41e0-bf99-dbcfed9c1fb3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:17:34,806 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c62580-bbbb-41e0-bf99-dbcfed9c1fb3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:17:34,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c62580-bbbb-41e0-bf99-dbcfed9c1fb3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-14 04:17:34,891 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-14 04:17:34,891 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 04:17:34,893 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-14 04:17:34,895 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:17:35,013 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-14 04:17:35,013 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:17:35,269 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-14 04:17:35,269 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:17:35,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117692932] [2024-11-14 04:17:35,269 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 04:17:35,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589959523] [2024-11-14 04:17:35,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589959523] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:17:35,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1775611235] [2024-11-14 04:17:35,272 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-14 04:17:35,272 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:17:35,272 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:17:35,272 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:17:35,273 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:17:35,708 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 9 for LOIs [2024-11-14 04:17:35,710 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:17:36,186 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '595#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_~r~0#1_49| Int)) (and (<= |v_ULTIMATE.start_main_~r~0#1_49| 2147483647) (<= 0 |v_ULTIMATE.start_main_~r~0#1_49|) (<= 2147483648 (* |v_ULTIMATE.start_main_~r~0#1_49| |v_ULTIMATE.start_main_~r~0#1_49|)))))' at error location [2024-11-14 04:17:36,186 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:17:36,186 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-14 04:17:36,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2024-11-14 04:17:36,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582545894] [2024-11-14 04:17:36,187 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-14 04:17:36,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-14 04:17:36,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:17:36,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-14 04:17:36,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2024-11-14 04:17:36,192 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand has 12 states, 11 states have (on average 5.181818181818182) internal successors, (57), 12 states have internal predecessors, (57), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-14 04:17:36,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:17:36,566 INFO L93 Difference]: Finished difference Result 78 states and 92 transitions. [2024-11-14 04:17:36,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-14 04:17:36,567 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.181818181818182) internal successors, (57), 12 states have internal predecessors, (57), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 40 [2024-11-14 04:17:36,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:17:36,568 INFO L225 Difference]: With dead ends: 78 [2024-11-14 04:17:36,568 INFO L226 Difference]: Without dead ends: 77 [2024-11-14 04:17:36,569 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 97 SyntacticMatches, 5 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=115, Invalid=347, Unknown=0, NotChecked=0, Total=462 [2024-11-14 04:17:36,570 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 18 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 04:17:36,570 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 95 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 04:17:36,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-11-14 04:17:36,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2024-11-14 04:17:36,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 65 states have (on average 1.0153846153846153) internal successors, (66), 65 states have internal predecessors, (66), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-14 04:17:36,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 86 transitions. [2024-11-14 04:17:36,591 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 86 transitions. Word has length 40 [2024-11-14 04:17:36,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:17:36,591 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 86 transitions. [2024-11-14 04:17:36,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.181818181818182) internal successors, (57), 12 states have internal predecessors, (57), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-14 04:17:36,592 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 86 transitions. [2024-11-14 04:17:36,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-14 04:17:36,598 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:17:36,598 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 1, 1] [2024-11-14 04:17:36,621 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c62580-bbbb-41e0-bf99-dbcfed9c1fb3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-14 04:17:36,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c62580-bbbb-41e0-bf99-dbcfed9c1fb3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-14 04:17:36,799 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-14 04:17:36,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:17:36,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1958863532, now seen corresponding path program 3 times [2024-11-14 04:17:36,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:17:36,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677245485] [2024-11-14 04:17:36,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:17:36,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:17:36,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 04:17:36,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [634095033] [2024-11-14 04:17:36,907 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 04:17:36,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:17:36,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c62580-bbbb-41e0-bf99-dbcfed9c1fb3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:17:36,912 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c62580-bbbb-41e0-bf99-dbcfed9c1fb3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:17:36,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c62580-bbbb-41e0-bf99-dbcfed9c1fb3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-14 04:17:37,025 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 04:17:37,025 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 04:17:37,027 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-14 04:17:37,031 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:17:37,334 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-14 04:17:37,334 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:17:38,102 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-14 04:17:38,103 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:17:38,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677245485] [2024-11-14 04:17:38,103 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 04:17:38,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634095033] [2024-11-14 04:17:38,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634095033] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:17:38,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [613540182] [2024-11-14 04:17:38,105 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-14 04:17:38,106 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:17:38,107 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:17:38,107 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:17:38,108 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:17:38,463 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 9 for LOIs [2024-11-14 04:17:38,465 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:17:39,480 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1392#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_~r~0#1_74| Int)) (and (<= |v_ULTIMATE.start_main_~r~0#1_74| 2147483647) (<= 2147483648 (* |v_ULTIMATE.start_main_~r~0#1_74| |v_ULTIMATE.start_main_~r~0#1_74|)) (<= 0 |v_ULTIMATE.start_main_~r~0#1_74|))))' at error location [2024-11-14 04:17:39,481 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:17:39,481 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-14 04:17:39,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2024-11-14 04:17:39,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8893694] [2024-11-14 04:17:39,482 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-14 04:17:39,483 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-14 04:17:39,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:17:39,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-14 04:17:39,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=683, Unknown=0, NotChecked=0, Total=870 [2024-11-14 04:17:39,489 INFO L87 Difference]: Start difference. First operand 77 states and 86 transitions. Second operand has 24 states, 23 states have (on average 5.608695652173913) internal successors, (129), 24 states have internal predecessors, (129), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-14 04:17:40,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:17:40,649 INFO L93 Difference]: Finished difference Result 162 states and 194 transitions. [2024-11-14 04:17:40,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-14 04:17:40,650 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 5.608695652173913) internal successors, (129), 24 states have internal predecessors, (129), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Word has length 94 [2024-11-14 04:17:40,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:17:40,653 INFO L225 Difference]: With dead ends: 162 [2024-11-14 04:17:40,654 INFO L226 Difference]: Without dead ends: 161 [2024-11-14 04:17:40,657 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 241 SyntacticMatches, 11 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=427, Invalid=1133, Unknown=0, NotChecked=0, Total=1560 [2024-11-14 04:17:40,658 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 39 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 681 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-14 04:17:40,658 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 407 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 681 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-14 04:17:40,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2024-11-14 04:17:40,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2024-11-14 04:17:40,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 137 states have (on average 1.0072992700729928) internal successors, (138), 137 states have internal predecessors, (138), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-14 04:17:40,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 182 transitions. [2024-11-14 04:17:40,695 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 182 transitions. Word has length 94 [2024-11-14 04:17:40,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:17:40,697 INFO L471 AbstractCegarLoop]: Abstraction has 161 states and 182 transitions. [2024-11-14 04:17:40,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 5.608695652173913) internal successors, (129), 24 states have internal predecessors, (129), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-14 04:17:40,698 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 182 transitions. [2024-11-14 04:17:40,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2024-11-14 04:17:40,700 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:17:40,700 INFO L215 NwaCegarLoop]: trace histogram [23, 23, 22, 22, 22, 22, 22, 22, 22, 1, 1] [2024-11-14 04:17:40,720 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c62580-bbbb-41e0-bf99-dbcfed9c1fb3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-14 04:17:40,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c62580-bbbb-41e0-bf99-dbcfed9c1fb3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:17:40,901 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-14 04:17:40,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:17:40,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1745635476, now seen corresponding path program 4 times [2024-11-14 04:17:40,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:17:40,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41243905] [2024-11-14 04:17:40,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:17:40,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:17:41,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 04:17:41,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1133310808] [2024-11-14 04:17:41,064 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-14 04:17:41,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:17:41,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c62580-bbbb-41e0-bf99-dbcfed9c1fb3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:17:41,066 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c62580-bbbb-41e0-bf99-dbcfed9c1fb3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:17:41,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c62580-bbbb-41e0-bf99-dbcfed9c1fb3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-14 04:17:41,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:17:41,203 INFO L255 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-14 04:17:41,212 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:17:41,826 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 1683 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2024-11-14 04:17:41,826 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:17:43,687 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 1683 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2024-11-14 04:17:43,687 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:17:43,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41243905] [2024-11-14 04:17:43,688 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 04:17:43,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133310808] [2024-11-14 04:17:43,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1133310808] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:17:43,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1895380785] [2024-11-14 04:17:43,691 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-14 04:17:43,692 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:17:43,692 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:17:43,693 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:17:43,693 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:17:43,956 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 9 for LOIs [2024-11-14 04:17:43,960 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:17:46,471 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3089#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_~r~0#1_123| Int)) (and (<= 2147483648 (* |v_ULTIMATE.start_main_~r~0#1_123| |v_ULTIMATE.start_main_~r~0#1_123|)) (<= |v_ULTIMATE.start_main_~r~0#1_123| 2147483647) (<= 0 |v_ULTIMATE.start_main_~r~0#1_123|))))' at error location [2024-11-14 04:17:46,471 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:17:46,471 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-14 04:17:46,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 47 [2024-11-14 04:17:46,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284465727] [2024-11-14 04:17:46,472 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-14 04:17:46,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-14 04:17:46,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:17:46,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-14 04:17:46,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=643, Invalid=2219, Unknown=0, NotChecked=0, Total=2862 [2024-11-14 04:17:46,477 INFO L87 Difference]: Start difference. First operand 161 states and 182 transitions. Second operand has 48 states, 47 states have (on average 5.808510638297872) internal successors, (273), 48 states have internal predecessors, (273), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-11-14 04:17:50,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:17:50,780 INFO L93 Difference]: Finished difference Result 330 states and 398 transitions. [2024-11-14 04:17:50,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-14 04:17:50,781 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 5.808510638297872) internal successors, (273), 48 states have internal predecessors, (273), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) Word has length 202 [2024-11-14 04:17:50,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:17:50,783 INFO L225 Difference]: With dead ends: 330 [2024-11-14 04:17:50,783 INFO L226 Difference]: Without dead ends: 329 [2024-11-14 04:17:50,785 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 626 GetRequests, 529 SyntacticMatches, 23 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1055 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=1699, Invalid=4001, Unknown=0, NotChecked=0, Total=5700 [2024-11-14 04:17:50,786 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 72 mSDsluCounter, 1586 mSDsCounter, 0 mSdLazyCounter, 2805 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 1679 SdHoareTripleChecker+Invalid, 2829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 2805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-14 04:17:50,787 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 1679 Invalid, 2829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 2805 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-14 04:17:50,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2024-11-14 04:17:50,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 329. [2024-11-14 04:17:50,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 281 states have (on average 1.00355871886121) internal successors, (282), 281 states have internal predecessors, (282), 46 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-11-14 04:17:50,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 374 transitions. [2024-11-14 04:17:50,844 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 374 transitions. Word has length 202 [2024-11-14 04:17:50,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:17:50,844 INFO L471 AbstractCegarLoop]: Abstraction has 329 states and 374 transitions. [2024-11-14 04:17:50,845 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 5.808510638297872) internal successors, (273), 48 states have internal predecessors, (273), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-11-14 04:17:50,845 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 374 transitions. [2024-11-14 04:17:50,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2024-11-14 04:17:50,861 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:17:50,861 INFO L215 NwaCegarLoop]: trace histogram [47, 47, 46, 46, 46, 46, 46, 46, 46, 1, 1] [2024-11-14 04:17:50,883 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c62580-bbbb-41e0-bf99-dbcfed9c1fb3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-14 04:17:51,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c62580-bbbb-41e0-bf99-dbcfed9c1fb3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:17:51,066 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-14 04:17:51,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:17:51,066 INFO L85 PathProgramCache]: Analyzing trace with hash 107020524, now seen corresponding path program 5 times [2024-11-14 04:17:51,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:17:51,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705726288] [2024-11-14 04:17:51,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:17:51,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:17:51,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 04:17:51,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1764083658] [2024-11-14 04:17:51,286 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 04:17:51,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:17:51,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c62580-bbbb-41e0-bf99-dbcfed9c1fb3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:17:51,288 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c62580-bbbb-41e0-bf99-dbcfed9c1fb3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:17:51,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c62580-bbbb-41e0-bf99-dbcfed9c1fb3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-14 04:17:51,977 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2024-11-14 04:17:51,977 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 04:17:51,984 INFO L255 TraceCheckSpWp]: Trace formula consists of 671 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-14 04:17:52,002 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:17:53,737 INFO L134 CoverageAnalysis]: Checked inductivity of 9453 backedges. 0 proven. 7383 refuted. 0 times theorem prover too weak. 2070 trivial. 0 not checked. [2024-11-14 04:17:53,738 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:17:54,221 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:17:54,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705726288] [2024-11-14 04:17:54,221 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 04:17:54,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764083658] [2024-11-14 04:17:54,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1764083658] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:17:54,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [677344924] [2024-11-14 04:17:54,224 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-14 04:17:54,224 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:17:54,224 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:17:54,225 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:17:54,225 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:17:54,564 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 9 for LOIs [2024-11-14 04:17:54,566 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:17:58,270 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5341#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_~r~0#1_176| Int)) (and (<= 0 |v_ULTIMATE.start_main_~r~0#1_176|) (<= |v_ULTIMATE.start_main_~r~0#1_176| 2147483647) (<= 2147483648 (* |v_ULTIMATE.start_main_~r~0#1_176| |v_ULTIMATE.start_main_~r~0#1_176|)))))' at error location [2024-11-14 04:17:58,270 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:17:58,270 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:17:58,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2024-11-14 04:17:58,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287355101] [2024-11-14 04:17:58,271 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-14 04:17:58,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-14 04:17:58,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:17:58,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-14 04:17:58,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1264, Invalid=2276, Unknown=0, NotChecked=0, Total=3540 [2024-11-14 04:17:58,275 INFO L87 Difference]: Start difference. First operand 329 states and 374 transitions. Second operand has 50 states, 49 states have (on average 5.73469387755102) internal successors, (281), 50 states have internal predecessors, (281), 46 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-11-14 04:18:00,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:18:00,871 INFO L93 Difference]: Finished difference Result 341 states and 388 transitions. [2024-11-14 04:18:00,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-14 04:18:00,872 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 49 states have (on average 5.73469387755102) internal successors, (281), 50 states have internal predecessors, (281), 46 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) Word has length 418 [2024-11-14 04:18:00,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:18:00,880 INFO L225 Difference]: With dead ends: 341 [2024-11-14 04:18:00,880 INFO L226 Difference]: Without dead ends: 340 [2024-11-14 04:18:00,884 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 897 GetRequests, 746 SyntacticMatches, 47 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4251 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=3748, Invalid=7382, Unknown=0, NotChecked=0, Total=11130 [2024-11-14 04:18:00,886 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 233 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 04:18:00,886 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 108 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 04:18:00,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2024-11-14 04:18:00,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 336. [2024-11-14 04:18:00,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 287 states have (on average 1.0034843205574913) internal successors, (288), 287 states have internal predecessors, (288), 47 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2024-11-14 04:18:00,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 382 transitions. [2024-11-14 04:18:00,950 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 382 transitions. Word has length 418 [2024-11-14 04:18:00,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:18:00,953 INFO L471 AbstractCegarLoop]: Abstraction has 336 states and 382 transitions. [2024-11-14 04:18:00,954 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 49 states have (on average 5.73469387755102) internal successors, (281), 50 states have internal predecessors, (281), 46 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-11-14 04:18:00,954 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 382 transitions. [2024-11-14 04:18:00,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2024-11-14 04:18:00,968 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:18:00,968 INFO L215 NwaCegarLoop]: trace histogram [48, 48, 47, 47, 47, 47, 47, 47, 47, 1, 1] [2024-11-14 04:18:00,993 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c62580-bbbb-41e0-bf99-dbcfed9c1fb3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-14 04:18:01,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c62580-bbbb-41e0-bf99-dbcfed9c1fb3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-14 04:18:01,170 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-14 04:18:01,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:18:01,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1132332363, now seen corresponding path program 6 times [2024-11-14 04:18:01,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:18:01,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857127330] [2024-11-14 04:18:01,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:18:01,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:18:01,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 04:18:01,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1109112042] [2024-11-14 04:18:01,446 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 04:18:01,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:18:01,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c62580-bbbb-41e0-bf99-dbcfed9c1fb3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:18:01,450 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c62580-bbbb-41e0-bf99-dbcfed9c1fb3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:18:01,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c62580-bbbb-41e0-bf99-dbcfed9c1fb3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-14 04:18:01,691 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 04:18:01,691 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 04:18:01,695 INFO L255 TraceCheckSpWp]: Trace formula consists of 685 conjuncts, 97 conjuncts are in the unsatisfiable core [2024-11-14 04:18:01,703 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:18:03,190 INFO L134 CoverageAnalysis]: Checked inductivity of 9870 backedges. 0 proven. 7708 refuted. 0 times theorem prover too weak. 2162 trivial. 0 not checked. [2024-11-14 04:18:03,190 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:18:08,626 INFO L134 CoverageAnalysis]: Checked inductivity of 9870 backedges. 0 proven. 7708 refuted. 0 times theorem prover too weak. 2162 trivial. 0 not checked. [2024-11-14 04:18:08,626 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:18:08,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857127330] [2024-11-14 04:18:08,626 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 04:18:08,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109112042] [2024-11-14 04:18:08,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109112042] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:18:08,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1817394392] [2024-11-14 04:18:08,628 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-14 04:18:08,628 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:18:08,628 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:18:08,628 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:18:08,629 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:18:08,828 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 9 for LOIs [2024-11-14 04:18:08,830 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:18:17,434 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8965#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_~r~0#1_275| Int)) (and (<= 2147483648 (* |v_ULTIMATE.start_main_~r~0#1_275| |v_ULTIMATE.start_main_~r~0#1_275|)) (<= |v_ULTIMATE.start_main_~r~0#1_275| 2147483647) (<= 0 |v_ULTIMATE.start_main_~r~0#1_275|))))' at error location [2024-11-14 04:18:17,434 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:18:17,435 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-14 04:18:17,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 97 [2024-11-14 04:18:17,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053996334] [2024-11-14 04:18:17,435 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-14 04:18:17,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2024-11-14 04:18:17,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:18:17,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2024-11-14 04:18:17,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2518, Invalid=8194, Unknown=0, NotChecked=0, Total=10712 [2024-11-14 04:18:17,442 INFO L87 Difference]: Start difference. First operand 336 states and 382 transitions. Second operand has 98 states, 97 states have (on average 5.907216494845361) internal successors, (573), 98 states have internal predecessors, (573), 94 states have call successors, (94), 1 states have call predecessors, (94), 1 states have return successors, (94), 94 states have call predecessors, (94), 94 states have call successors, (94) [2024-11-14 04:18:40,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:18:40,465 INFO L93 Difference]: Finished difference Result 680 states and 823 transitions. [2024-11-14 04:18:40,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2024-11-14 04:18:40,466 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 97 states have (on average 5.907216494845361) internal successors, (573), 98 states have internal predecessors, (573), 94 states have call successors, (94), 1 states have call predecessors, (94), 1 states have return successors, (94), 94 states have call predecessors, (94), 94 states have call successors, (94) Word has length 427 [2024-11-14 04:18:40,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:18:40,471 INFO L225 Difference]: With dead ends: 680 [2024-11-14 04:18:40,471 INFO L226 Difference]: Without dead ends: 679 [2024-11-14 04:18:40,477 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1326 GetRequests, 1129 SyntacticMatches, 48 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4005 ImplicationChecksByTransitivity, 31.7s TimeCoverageRelationStatistics Valid=7124, Invalid=15526, Unknown=0, NotChecked=0, Total=22650 [2024-11-14 04:18:40,478 INFO L432 NwaCegarLoop]: 193 mSDtfsCounter, 147 mSDsluCounter, 6911 mSDsCounter, 0 mSdLazyCounter, 11855 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 7104 SdHoareTripleChecker+Invalid, 11904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 11855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2024-11-14 04:18:40,481 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 7104 Invalid, 11904 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [49 Valid, 11855 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2024-11-14 04:18:40,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2024-11-14 04:18:40,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 679. [2024-11-14 04:18:40,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 679 states, 581 states have (on average 1.0017211703958693) internal successors, (582), 581 states have internal predecessors, (582), 96 states have call successors, (96), 1 states have call predecessors, (96), 1 states have return successors, (96), 96 states have call predecessors, (96), 96 states have call successors, (96) [2024-11-14 04:18:40,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 774 transitions. [2024-11-14 04:18:40,543 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 774 transitions. Word has length 427 [2024-11-14 04:18:40,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:18:40,546 INFO L471 AbstractCegarLoop]: Abstraction has 679 states and 774 transitions. [2024-11-14 04:18:40,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 97 states have (on average 5.907216494845361) internal successors, (573), 98 states have internal predecessors, (573), 94 states have call successors, (94), 1 states have call predecessors, (94), 1 states have return successors, (94), 94 states have call predecessors, (94), 94 states have call successors, (94) [2024-11-14 04:18:40,547 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 774 transitions. [2024-11-14 04:18:40,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 869 [2024-11-14 04:18:40,555 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:18:40,555 INFO L215 NwaCegarLoop]: trace histogram [97, 97, 96, 96, 96, 96, 96, 96, 96, 1, 1] [2024-11-14 04:18:40,570 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c62580-bbbb-41e0-bf99-dbcfed9c1fb3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-14 04:18:40,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c62580-bbbb-41e0-bf99-dbcfed9c1fb3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-14 04:18:40,756 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-14 04:18:40,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:18:40,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1783973388, now seen corresponding path program 7 times [2024-11-14 04:18:40,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:18:40,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894158063] [2024-11-14 04:18:40,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:18:40,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:18:41,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 04:18:41,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [797473430] [2024-11-14 04:18:41,090 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-14 04:18:41,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:18:41,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c62580-bbbb-41e0-bf99-dbcfed9c1fb3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:18:41,093 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c62580-bbbb-41e0-bf99-dbcfed9c1fb3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:18:41,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c62580-bbbb-41e0-bf99-dbcfed9c1fb3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-14 04:18:41,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:18:41,434 INFO L255 TraceCheckSpWp]: Trace formula consists of 1371 conjuncts, 195 conjuncts are in the unsatisfiable core [2024-11-14 04:18:41,449 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:18:46,213 INFO L134 CoverageAnalysis]: Checked inductivity of 41328 backedges. 0 proven. 32208 refuted. 0 times theorem prover too weak. 9120 trivial. 0 not checked. [2024-11-14 04:18:46,214 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:19:06,660 INFO L134 CoverageAnalysis]: Checked inductivity of 41328 backedges. 0 proven. 32208 refuted. 0 times theorem prover too weak. 9120 trivial. 0 not checked. [2024-11-14 04:19:06,661 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:19:06,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894158063] [2024-11-14 04:19:06,661 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 04:19:06,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797473430] [2024-11-14 04:19:06,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797473430] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:19:06,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1653472324] [2024-11-14 04:19:06,664 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-14 04:19:06,664 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:19:06,664 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:19:06,665 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:19:06,665 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:19:06,951 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 9 for LOIs [2024-11-14 04:19:06,952 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:19:42,797 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '16212#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_~r~0#1_472| Int)) (and (<= |v_ULTIMATE.start_main_~r~0#1_472| 2147483647) (<= 0 |v_ULTIMATE.start_main_~r~0#1_472|) (<= 2147483648 (* |v_ULTIMATE.start_main_~r~0#1_472| |v_ULTIMATE.start_main_~r~0#1_472|)))))' at error location [2024-11-14 04:19:42,797 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:19:42,797 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-14 04:19:42,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98] total 195 [2024-11-14 04:19:42,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718244279] [2024-11-14 04:19:42,798 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-14 04:19:42,800 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 196 states [2024-11-14 04:19:42,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:19:42,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 196 interpolants. [2024-11-14 04:19:42,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9819, Invalid=30783, Unknown=0, NotChecked=0, Total=40602 [2024-11-14 04:19:42,810 INFO L87 Difference]: Start difference. First operand 679 states and 774 transitions. Second operand has 196 states, 195 states have (on average 5.953846153846154) internal successors, (1161), 196 states have internal predecessors, (1161), 192 states have call successors, (192), 1 states have call predecessors, (192), 1 states have return successors, (192), 192 states have call predecessors, (192), 192 states have call successors, (192) [2024-11-14 04:22:09,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:22:09,047 INFO L93 Difference]: Finished difference Result 1366 states and 1656 transitions. [2024-11-14 04:22:09,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 196 states. [2024-11-14 04:22:09,049 INFO L78 Accepts]: Start accepts. Automaton has has 196 states, 195 states have (on average 5.953846153846154) internal successors, (1161), 196 states have internal predecessors, (1161), 192 states have call successors, (192), 1 states have call predecessors, (192), 1 states have return successors, (192), 192 states have call predecessors, (192), 192 states have call successors, (192) Word has length 868 [2024-11-14 04:22:09,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:22:09,059 INFO L225 Difference]: With dead ends: 1366 [2024-11-14 04:22:09,059 INFO L226 Difference]: Without dead ends: 1365 [2024-11-14 04:22:09,083 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2698 GetRequests, 2305 SyntacticMatches, 97 SemanticMatches, 296 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15226 ImplicationChecksByTransitivity, 181.9s TimeCoverageRelationStatistics Valid=28635, Invalid=59871, Unknown=0, NotChecked=0, Total=88506 [2024-11-14 04:22:09,084 INFO L432 NwaCegarLoop]: 389 mSDtfsCounter, 297 mSDsluCounter, 28614 mSDsCounter, 0 mSdLazyCounter, 47731 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 29003 SdHoareTripleChecker+Invalid, 47830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 47731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.5s IncrementalHoareTripleChecker+Time [2024-11-14 04:22:09,084 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 29003 Invalid, 47830 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [99 Valid, 47731 Invalid, 0 Unknown, 0 Unchecked, 18.5s Time] [2024-11-14 04:22:09,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1365 states. [2024-11-14 04:22:09,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1365 to 1365. [2024-11-14 04:22:09,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1365 states, 1169 states have (on average 1.0008554319931566) internal successors, (1170), 1169 states have internal predecessors, (1170), 194 states have call successors, (194), 1 states have call predecessors, (194), 1 states have return successors, (194), 194 states have call predecessors, (194), 194 states have call successors, (194) [2024-11-14 04:22:09,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1365 states to 1365 states and 1558 transitions. [2024-11-14 04:22:09,180 INFO L78 Accepts]: Start accepts. Automaton has 1365 states and 1558 transitions. Word has length 868 [2024-11-14 04:22:09,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:22:09,182 INFO L471 AbstractCegarLoop]: Abstraction has 1365 states and 1558 transitions. [2024-11-14 04:22:09,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 196 states, 195 states have (on average 5.953846153846154) internal successors, (1161), 196 states have internal predecessors, (1161), 192 states have call successors, (192), 1 states have call predecessors, (192), 1 states have return successors, (192), 192 states have call predecessors, (192), 192 states have call successors, (192) [2024-11-14 04:22:09,184 INFO L276 IsEmpty]: Start isEmpty. Operand 1365 states and 1558 transitions. [2024-11-14 04:22:09,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1751 [2024-11-14 04:22:09,212 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:22:09,212 INFO L215 NwaCegarLoop]: trace histogram [195, 195, 194, 194, 194, 194, 194, 194, 194, 1, 1] [2024-11-14 04:22:09,237 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c62580-bbbb-41e0-bf99-dbcfed9c1fb3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-14 04:22:09,413 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c62580-bbbb-41e0-bf99-dbcfed9c1fb3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-14 04:22:09,414 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-14 04:22:09,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:22:09,415 INFO L85 PathProgramCache]: Analyzing trace with hash 858609196, now seen corresponding path program 8 times [2024-11-14 04:22:09,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:22:09,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700049667] [2024-11-14 04:22:09,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:22:09,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:22:10,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 04:22:10,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [111395284] [2024-11-14 04:22:10,498 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 04:22:10,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:22:10,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c62580-bbbb-41e0-bf99-dbcfed9c1fb3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:22:10,501 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c62580-bbbb-41e0-bf99-dbcfed9c1fb3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:22:10,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c62580-bbbb-41e0-bf99-dbcfed9c1fb3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-14 04:22:14,571 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 195 check-sat command(s) [2024-11-14 04:22:14,571 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 04:22:14,587 INFO L255 TraceCheckSpWp]: Trace formula consists of 2743 conjuncts, 198 conjuncts are in the unsatisfiable core [2024-11-14 04:22:14,611 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:22:37,504 INFO L134 CoverageAnalysis]: Checked inductivity of 169071 backedges. 0 proven. 131629 refuted. 0 times theorem prover too weak. 37442 trivial. 0 not checked. [2024-11-14 04:22:37,505 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:22:39,064 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:22:39,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700049667] [2024-11-14 04:22:39,065 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 04:22:39,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111395284] [2024-11-14 04:22:39,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [111395284] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:22:39,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1034339758] [2024-11-14 04:22:39,068 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-14 04:22:39,068 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:22:39,069 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:22:39,069 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:22:39,069 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:22:39,457 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 9 for LOIs [2024-11-14 04:22:39,460 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:23:31,494 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '25420#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_~r~0#1_673| Int)) (and (<= 0 |v_ULTIMATE.start_main_~r~0#1_673|) (<= 2147483648 (* |v_ULTIMATE.start_main_~r~0#1_673| |v_ULTIMATE.start_main_~r~0#1_673|)) (<= |v_ULTIMATE.start_main_~r~0#1_673| 2147483647))))' at error location [2024-11-14 04:23:31,494 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:23:31,494 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:23:31,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [197] total 197 [2024-11-14 04:23:31,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45875619] [2024-11-14 04:23:31,494 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-14 04:23:31,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 198 states [2024-11-14 04:23:31,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:23:31,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 198 interpolants. [2024-11-14 04:23:31,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19542, Invalid=23514, Unknown=0, NotChecked=0, Total=43056 [2024-11-14 04:23:31,510 INFO L87 Difference]: Start difference. First operand 1365 states and 1558 transitions. Second operand has 198 states, 197 states have (on average 5.934010152284264) internal successors, (1169), 198 states have internal predecessors, (1169), 194 states have call successors, (194), 1 states have call predecessors, (194), 1 states have return successors, (194), 194 states have call predecessors, (194), 194 states have call successors, (194) [2024-11-14 04:24:12,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:24:12,143 INFO L93 Difference]: Finished difference Result 1377 states and 1572 transitions. [2024-11-14 04:24:12,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 197 states. [2024-11-14 04:24:12,145 INFO L78 Accepts]: Start accepts. Automaton has has 198 states, 197 states have (on average 5.934010152284264) internal successors, (1169), 198 states have internal predecessors, (1169), 194 states have call successors, (194), 1 states have call predecessors, (194), 1 states have return successors, (194), 194 states have call predecessors, (194), 194 states have call successors, (194) Word has length 1750 [2024-11-14 04:24:12,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:24:12,158 INFO L225 Difference]: With dead ends: 1377 [2024-11-14 04:24:12,158 INFO L226 Difference]: Without dead ends: 1376 [2024-11-14 04:24:12,178 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3709 GetRequests, 3114 SyntacticMatches, 195 SemanticMatches, 400 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60861 ImplicationChecksByTransitivity, 110.4s TimeCoverageRelationStatistics Valid=58730, Invalid=102472, Unknown=0, NotChecked=0, Total=161202 [2024-11-14 04:24:12,179 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 973 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 992 mSolverCounterSat, 389 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 974 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 1381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 389 IncrementalHoareTripleChecker+Valid, 992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-14 04:24:12,179 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [974 Valid, 402 Invalid, 1381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [389 Valid, 992 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-14 04:24:12,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states. [2024-11-14 04:24:12,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 1372. [2024-11-14 04:24:12,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1372 states, 1175 states have (on average 1.0008510638297872) internal successors, (1176), 1175 states have internal predecessors, (1176), 195 states have call successors, (195), 1 states have call predecessors, (195), 1 states have return successors, (195), 195 states have call predecessors, (195), 195 states have call successors, (195) [2024-11-14 04:24:12,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1372 states to 1372 states and 1566 transitions. [2024-11-14 04:24:12,356 INFO L78 Accepts]: Start accepts. Automaton has 1372 states and 1566 transitions. Word has length 1750 [2024-11-14 04:24:12,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:24:12,362 INFO L471 AbstractCegarLoop]: Abstraction has 1372 states and 1566 transitions. [2024-11-14 04:24:12,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 198 states, 197 states have (on average 5.934010152284264) internal successors, (1169), 198 states have internal predecessors, (1169), 194 states have call successors, (194), 1 states have call predecessors, (194), 1 states have return successors, (194), 194 states have call predecessors, (194), 194 states have call successors, (194) [2024-11-14 04:24:12,363 INFO L276 IsEmpty]: Start isEmpty. Operand 1372 states and 1566 transitions. [2024-11-14 04:24:12,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1760 [2024-11-14 04:24:12,397 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:24:12,398 INFO L215 NwaCegarLoop]: trace histogram [196, 196, 195, 195, 195, 195, 195, 195, 195, 1, 1] [2024-11-14 04:24:12,430 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c62580-bbbb-41e0-bf99-dbcfed9c1fb3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-14 04:24:12,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c62580-bbbb-41e0-bf99-dbcfed9c1fb3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:24:12,598 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-14 04:24:12,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:24:12,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1440641675, now seen corresponding path program 9 times [2024-11-14 04:24:12,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:24:12,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062674439] [2024-11-14 04:24:12,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:24:12,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:24:13,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 04:24:13,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2073137579] [2024-11-14 04:24:13,462 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 04:24:13,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:24:13,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c62580-bbbb-41e0-bf99-dbcfed9c1fb3/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:24:13,467 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c62580-bbbb-41e0-bf99-dbcfed9c1fb3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:24:13,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8c62580-bbbb-41e0-bf99-dbcfed9c1fb3/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-14 04:24:14,158 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 04:24:14,158 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 04:24:14,175 INFO L255 TraceCheckSpWp]: Trace formula consists of 2757 conjuncts, 393 conjuncts are in the unsatisfiable core [2024-11-14 04:24:14,198 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:24:32,661 INFO L134 CoverageAnalysis]: Checked inductivity of 170820 backedges. 0 proven. 132990 refuted. 0 times theorem prover too weak. 37830 trivial. 0 not checked. [2024-11-14 04:24:32,661 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:26:00,061 INFO L134 CoverageAnalysis]: Checked inductivity of 170820 backedges. 0 proven. 132990 refuted. 0 times theorem prover too weak. 37830 trivial. 0 not checked. [2024-11-14 04:26:00,061 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:26:00,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062674439] [2024-11-14 04:26:00,061 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 04:26:00,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073137579] [2024-11-14 04:26:00,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073137579] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:26:00,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [844266532] [2024-11-14 04:26:00,064 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-14 04:26:00,064 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:26:00,064 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:26:00,064 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:26:00,065 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:26:00,321 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 9 for LOIs [2024-11-14 04:26:00,322 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 04:28:21,288 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '40292#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_~r~0#1_1068| Int)) (and (<= 2147483648 (* |v_ULTIMATE.start_main_~r~0#1_1068| |v_ULTIMATE.start_main_~r~0#1_1068|)) (<= |v_ULTIMATE.start_main_~r~0#1_1068| 2147483647) (<= 0 |v_ULTIMATE.start_main_~r~0#1_1068|))))' at error location [2024-11-14 04:28:21,288 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 04:28:21,289 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-14 04:28:21,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [197, 197] total 393 [2024-11-14 04:28:21,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792425247] [2024-11-14 04:28:21,290 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-14 04:28:21,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 394 states [2024-11-14 04:28:21,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:28:21,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 394 interpolants. [2024-11-14 04:28:21,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39222, Invalid=120378, Unknown=0, NotChecked=0, Total=159600 [2024-11-14 04:28:21,317 INFO L87 Difference]: Start difference. First operand 1372 states and 1566 transitions. Second operand has 394 states, 393 states have (on average 5.977099236641221) internal successors, (2349), 394 states have internal predecessors, (2349), 390 states have call successors, (390), 1 states have call predecessors, (390), 1 states have return successors, (390), 390 states have call predecessors, (390), 390 states have call successors, (390)