./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_valuebound20.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_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/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_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_valuebound20.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/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_84fb5644-e9e6-4f18-9914-777eaeb93b80/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 d6a7b66d62d8261743d542694624b328b551f76289ee08b3039b7ca01c3c317e --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 23:40:14,571 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 23:40:14,670 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Overflow-32bit-Taipan_Default.epf [2024-11-13 23:40:14,682 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 23:40:14,682 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 23:40:14,717 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 23:40:14,718 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 23:40:14,718 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 23:40:14,719 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 23:40:14,719 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 23:40:14,719 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-13 23:40:14,720 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-13 23:40:14,720 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-13 23:40:14,721 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-13 23:40:14,721 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-13 23:40:14,721 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-13 23:40:14,722 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-13 23:40:14,722 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-13 23:40:14,722 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-13 23:40:14,722 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-13 23:40:14,722 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-13 23:40:14,722 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-13 23:40:14,723 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 23:40:14,723 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 23:40:14,723 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 23:40:14,723 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 23:40:14,723 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 23:40:14,723 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 23:40:14,723 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 23:40:14,723 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 23:40:14,723 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 23:40:14,723 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 23:40:14,723 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-13 23:40:14,724 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 23:40:14,724 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 23:40:14,724 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 23:40:14,724 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 23:40:14,725 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 23:40:14,725 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 23:40:14,725 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 23:40:14,725 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-13 23:40:14,725 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 23:40:14,725 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 23:40:14,725 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 23:40:14,726 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-13 23:40:14,726 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 23:40:14,726 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 23:40:14,726 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-13 23:40:14,726 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 23:40:14,726 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_84fb5644-e9e6-4f18-9914-777eaeb93b80/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 -> d6a7b66d62d8261743d542694624b328b551f76289ee08b3039b7ca01c3c317e [2024-11-13 23:40:14,984 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 23:40:14,993 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 23:40:14,995 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 23:40:14,996 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 23:40:14,997 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 23:40:14,998 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_valuebound20.c Unable to find full path for "g++" [2024-11-13 23:40:16,802 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 23:40:17,083 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 23:40:17,088 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_valuebound20.c [2024-11-13 23:40:17,111 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/data/dabfd2bca/3873e408592a4d29907f81ae92ce35ca/FLAG7bb695196 [2024-11-13 23:40:17,129 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/data/dabfd2bca/3873e408592a4d29907f81ae92ce35ca [2024-11-13 23:40:17,132 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 23:40:17,133 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 23:40:17,134 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 23:40:17,134 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 23:40:17,138 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 23:40:17,139 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 11:40:17" (1/1) ... [2024-11-13 23:40:17,140 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@784791c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:40:17, skipping insertion in model container [2024-11-13 23:40:17,140 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 11:40:17" (1/1) ... [2024-11-13 23:40:17,156 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 23:40:17,319 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 23:40:17,328 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 23:40:17,349 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 23:40:17,363 INFO L204 MainTranslator]: Completed translation [2024-11-13 23:40:17,364 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:40:17 WrapperNode [2024-11-13 23:40:17,364 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 23:40:17,365 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 23:40:17,365 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 23:40:17,365 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 23:40:17,372 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:40:17" (1/1) ... [2024-11-13 23:40:17,378 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:40:17" (1/1) ... [2024-11-13 23:40:17,398 INFO L138 Inliner]: procedures = 14, calls = 14, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 101 [2024-11-13 23:40:17,398 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 23:40:17,399 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 23:40:17,399 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 23:40:17,399 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 23:40:17,408 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:40:17" (1/1) ... [2024-11-13 23:40:17,408 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:40:17" (1/1) ... [2024-11-13 23:40:17,411 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:40:17" (1/1) ... [2024-11-13 23:40:17,412 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:40:17" (1/1) ... [2024-11-13 23:40:17,418 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:40:17" (1/1) ... [2024-11-13 23:40:17,427 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:40:17" (1/1) ... [2024-11-13 23:40:17,431 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:40:17" (1/1) ... [2024-11-13 23:40:17,432 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:40:17" (1/1) ... [2024-11-13 23:40:17,433 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 23:40:17,438 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 23:40:17,438 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 23:40:17,438 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 23:40:17,439 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:40:17" (1/1) ... [2024-11-13 23:40:17,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-13 23:40:17,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:40:17,475 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-13 23:40:17,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-13 23:40:17,509 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 23:40:17,509 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-13 23:40:17,509 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-13 23:40:17,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-13 23:40:17,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 23:40:17,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 23:40:17,510 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-13 23:40:17,510 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-13 23:40:17,580 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 23:40:17,582 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 23:40:18,141 INFO L? ?]: Removed 91 outVars from TransFormulas that were not future-live. [2024-11-13 23:40:18,142 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 23:40:18,180 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 23:40:18,180 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-13 23:40:18,181 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 11:40:18 BoogieIcfgContainer [2024-11-13 23:40:18,181 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 23:40:18,183 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 23:40:18,183 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 23:40:18,188 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 23:40:18,189 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 11:40:17" (1/3) ... [2024-11-13 23:40:18,189 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c9f51ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 11:40:18, skipping insertion in model container [2024-11-13 23:40:18,189 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:40:17" (2/3) ... [2024-11-13 23:40:18,190 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c9f51ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 11:40:18, skipping insertion in model container [2024-11-13 23:40:18,190 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 11:40:18" (3/3) ... [2024-11-13 23:40:18,191 INFO L112 eAbstractionObserver]: Analyzing ICFG prod4br-ll_valuebound20.c [2024-11-13 23:40:18,207 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 23:40:18,210 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG prod4br-ll_valuebound20.c that has 3 procedures, 104 locations, 1 initial locations, 1 loop locations, and 42 error locations. [2024-11-13 23:40:18,277 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 23:40:18,293 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;@2dffd479, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 23:40:18,293 INFO L334 AbstractCegarLoop]: Starting to check reachability of 42 error locations. [2024-11-13 23:40:18,297 INFO L276 IsEmpty]: Start isEmpty. Operand has 104 states, 53 states have (on average 1.8867924528301887) internal successors, (100), 95 states have internal predecessors, (100), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-13 23:40:18,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-13 23:40:18,304 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:40:18,304 INFO L215 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:40:18,305 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr38ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2024-11-13 23:40:18,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:40:18,312 INFO L85 PathProgramCache]: Analyzing trace with hash 764557574, now seen corresponding path program 1 times [2024-11-13 23:40:18,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:40:18,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017141403] [2024-11-13 23:40:18,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:40:18,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:40:18,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:40:18,486 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 23:40:18,487 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:40:18,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017141403] [2024-11-13 23:40:18,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017141403] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:40:18,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:40:18,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 23:40:18,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747774785] [2024-11-13 23:40:18,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:40:18,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 23:40:18,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:40:18,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 23:40:18,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 23:40:18,517 INFO L87 Difference]: Start difference. First operand has 104 states, 53 states have (on average 1.8867924528301887) internal successors, (100), 95 states have internal predecessors, (100), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-13 23:40:18,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:40:18,554 INFO L93 Difference]: Finished difference Result 118 states and 126 transitions. [2024-11-13 23:40:18,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 23:40:18,559 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 14 [2024-11-13 23:40:18,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:40:18,567 INFO L225 Difference]: With dead ends: 118 [2024-11-13 23:40:18,567 INFO L226 Difference]: Without dead ends: 101 [2024-11-13 23:40:18,571 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 23:40:18,576 INFO L432 NwaCegarLoop]: 107 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 23:40:18,576 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 107 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 23:40:18,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-11-13 23:40:18,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2024-11-13 23:40:18,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 52 states have (on average 1.8653846153846154) internal successors, (97), 93 states have internal predecessors, (97), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-13 23:40:18,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 107 transitions. [2024-11-13 23:40:18,626 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 107 transitions. Word has length 14 [2024-11-13 23:40:18,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:40:18,629 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 107 transitions. [2024-11-13 23:40:18,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-13 23:40:18,630 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 107 transitions. [2024-11-13 23:40:18,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-13 23:40:18,631 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:40:18,631 INFO L215 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:40:18,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 23:40:18,632 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2024-11-13 23:40:18,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:40:18,633 INFO L85 PathProgramCache]: Analyzing trace with hash 764552637, now seen corresponding path program 1 times [2024-11-13 23:40:18,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:40:18,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782813324] [2024-11-13 23:40:18,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:40:18,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:40:18,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 23:40:18,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [109170801] [2024-11-13 23:40:18,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:40:18,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:40:18,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:40:18,687 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:40:18,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 23:40:18,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:40:18,778 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-13 23:40:18,786 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:40:18,962 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 23:40:18,962 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:40:19,206 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:40:19,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782813324] [2024-11-13 23:40:19,207 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 23:40:19,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109170801] [2024-11-13 23:40:19,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [109170801] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:40:19,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [279859211] [2024-11-13 23:40:19,236 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-13 23:40:19,236 INFO L166 IcfgInterpreter]: Building call graph [2024-11-13 23:40:19,239 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-13 23:40:19,244 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-13 23:40:19,244 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-13 23:40:19,806 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2024-11-13 23:40:19,808 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-13 23:40:20,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [279859211] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:40:20,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 23:40:20,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 13 [2024-11-13 23:40:20,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149845743] [2024-11-13 23:40:20,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:40:20,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 23:40:20,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:40:20,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 23:40:20,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2024-11-13 23:40:20,366 INFO L87 Difference]: Start difference. First operand 101 states and 107 transitions. Second operand has 10 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 23:40:21,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:40:21,156 INFO L93 Difference]: Finished difference Result 144 states and 159 transitions. [2024-11-13 23:40:21,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 23:40:21,156 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 14 [2024-11-13 23:40:21,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:40:21,157 INFO L225 Difference]: With dead ends: 144 [2024-11-13 23:40:21,158 INFO L226 Difference]: Without dead ends: 119 [2024-11-13 23:40:21,158 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2024-11-13 23:40:21,159 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 369 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-13 23:40:21,159 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [373 Valid, 130 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-13 23:40:21,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2024-11-13 23:40:21,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2024-11-13 23:40:21,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 73 states have (on average 1.6027397260273972) internal successors, (117), 110 states have internal predecessors, (117), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-13 23:40:21,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 129 transitions. [2024-11-13 23:40:21,176 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 129 transitions. Word has length 14 [2024-11-13 23:40:21,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:40:21,176 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 129 transitions. [2024-11-13 23:40:21,176 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 23:40:21,176 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 129 transitions. [2024-11-13 23:40:21,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-13 23:40:21,177 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:40:21,177 INFO L215 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:40:21,197 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-13 23:40:21,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:40:21,378 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2024-11-13 23:40:21,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:40:21,379 INFO L85 PathProgramCache]: Analyzing trace with hash -695536910, now seen corresponding path program 1 times [2024-11-13 23:40:21,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:40:21,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748930860] [2024-11-13 23:40:21,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:40:21,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:40:21,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:40:21,737 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 23:40:21,738 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:40:21,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748930860] [2024-11-13 23:40:21,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748930860] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:40:21,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:40:21,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 23:40:21,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120016436] [2024-11-13 23:40:21,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:40:21,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 23:40:21,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:40:21,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 23:40:21,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 23:40:21,740 INFO L87 Difference]: Start difference. First operand 119 states and 129 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-13 23:40:22,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:40:22,234 INFO L93 Difference]: Finished difference Result 164 states and 193 transitions. [2024-11-13 23:40:22,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 23:40:22,234 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 29 [2024-11-13 23:40:22,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:40:22,236 INFO L225 Difference]: With dead ends: 164 [2024-11-13 23:40:22,238 INFO L226 Difference]: Without dead ends: 161 [2024-11-13 23:40:22,239 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 23:40:22,239 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 167 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 23:40:22,240 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 106 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 23:40:22,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2024-11-13 23:40:22,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 147. [2024-11-13 23:40:22,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 101 states have (on average 1.6534653465346534) internal successors, (167), 137 states have internal predecessors, (167), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-13 23:40:22,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 181 transitions. [2024-11-13 23:40:22,261 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 181 transitions. Word has length 29 [2024-11-13 23:40:22,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:40:22,262 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 181 transitions. [2024-11-13 23:40:22,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-13 23:40:22,262 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 181 transitions. [2024-11-13 23:40:22,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-13 23:40:22,263 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:40:22,263 INFO L215 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:40:22,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 23:40:22,264 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2024-11-13 23:40:22,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:40:22,264 INFO L85 PathProgramCache]: Analyzing trace with hash -73416598, now seen corresponding path program 1 times [2024-11-13 23:40:22,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:40:22,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035893918] [2024-11-13 23:40:22,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:40:22,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:40:22,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 23:40:22,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [301583984] [2024-11-13 23:40:22,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:40:22,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:40:22,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:40:22,305 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:40:22,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 23:40:22,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:40:22,362 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 23:40:22,364 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:40:22,489 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 23:40:22,489 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 23:40:22,489 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:40:22,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035893918] [2024-11-13 23:40:22,490 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 23:40:22,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301583984] [2024-11-13 23:40:22,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301583984] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:40:22,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:40:22,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 23:40:22,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238846863] [2024-11-13 23:40:22,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:40:22,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 23:40:22,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:40:22,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 23:40:22,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 23:40:22,491 INFO L87 Difference]: Start difference. First operand 147 states and 181 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-13 23:40:22,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:40:22,992 INFO L93 Difference]: Finished difference Result 193 states and 246 transitions. [2024-11-13 23:40:22,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 23:40:22,994 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 30 [2024-11-13 23:40:22,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:40:22,995 INFO L225 Difference]: With dead ends: 193 [2024-11-13 23:40:22,995 INFO L226 Difference]: Without dead ends: 190 [2024-11-13 23:40:22,996 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 23:40:22,996 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 153 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 23:40:22,997 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 104 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 23:40:23,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2024-11-13 23:40:23,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 172. [2024-11-13 23:40:23,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 125 states have (on average 1.664) internal successors, (208), 161 states have internal predecessors, (208), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-13 23:40:23,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 224 transitions. [2024-11-13 23:40:23,039 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 224 transitions. Word has length 30 [2024-11-13 23:40:23,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:40:23,039 INFO L471 AbstractCegarLoop]: Abstraction has 172 states and 224 transitions. [2024-11-13 23:40:23,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-13 23:40:23,040 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 224 transitions. [2024-11-13 23:40:23,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-13 23:40:23,040 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:40:23,040 INFO L215 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:40:23,061 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-13 23:40:23,241 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:40:23,241 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2024-11-13 23:40:23,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:40:23,242 INFO L85 PathProgramCache]: Analyzing trace with hash -86807652, now seen corresponding path program 1 times [2024-11-13 23:40:23,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:40:23,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782341085] [2024-11-13 23:40:23,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:40:23,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:40:23,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:40:23,476 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 23:40:23,476 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:40:23,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782341085] [2024-11-13 23:40:23,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782341085] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:40:23,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:40:23,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 23:40:23,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869577629] [2024-11-13 23:40:23,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:40:23,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 23:40:23,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:40:23,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 23:40:23,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 23:40:23,478 INFO L87 Difference]: Start difference. First operand 172 states and 224 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-13 23:40:24,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:40:24,151 INFO L93 Difference]: Finished difference Result 353 states and 466 transitions. [2024-11-13 23:40:24,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 23:40:24,152 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 30 [2024-11-13 23:40:24,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:40:24,154 INFO L225 Difference]: With dead ends: 353 [2024-11-13 23:40:24,154 INFO L226 Difference]: Without dead ends: 265 [2024-11-13 23:40:24,154 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-13 23:40:24,157 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 222 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 23:40:24,158 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 117 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 23:40:24,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2024-11-13 23:40:24,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 240. [2024-11-13 23:40:24,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 190 states have (on average 1.694736842105263) internal successors, (322), 226 states have internal predecessors, (322), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-13 23:40:24,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 344 transitions. [2024-11-13 23:40:24,207 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 344 transitions. Word has length 30 [2024-11-13 23:40:24,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:40:24,210 INFO L471 AbstractCegarLoop]: Abstraction has 240 states and 344 transitions. [2024-11-13 23:40:24,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-13 23:40:24,210 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 344 transitions. [2024-11-13 23:40:24,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-13 23:40:24,211 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:40:24,211 INFO L215 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:40:24,211 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 23:40:24,211 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2024-11-13 23:40:24,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:40:24,211 INFO L85 PathProgramCache]: Analyzing trace with hash 2032443907, now seen corresponding path program 1 times [2024-11-13 23:40:24,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:40:24,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134780999] [2024-11-13 23:40:24,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:40:24,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:40:24,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 23:40:24,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [66852057] [2024-11-13 23:40:24,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:40:24,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:40:24,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:40:24,260 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:40:24,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 23:40:24,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:40:24,319 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 23:40:24,321 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:40:24,436 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 23:40:24,436 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 23:40:24,436 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:40:24,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134780999] [2024-11-13 23:40:24,436 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 23:40:24,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66852057] [2024-11-13 23:40:24,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [66852057] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:40:24,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:40:24,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 23:40:24,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775563786] [2024-11-13 23:40:24,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:40:24,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 23:40:24,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:40:24,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 23:40:24,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 23:40:24,438 INFO L87 Difference]: Start difference. First operand 240 states and 344 transitions. Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 23:40:24,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:40:24,822 INFO L93 Difference]: Finished difference Result 288 states and 411 transitions. [2024-11-13 23:40:24,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 23:40:24,823 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 31 [2024-11-13 23:40:24,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:40:24,825 INFO L225 Difference]: With dead ends: 288 [2024-11-13 23:40:24,827 INFO L226 Difference]: Without dead ends: 282 [2024-11-13 23:40:24,827 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 23:40:24,828 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 146 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 23:40:24,829 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 98 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 23:40:24,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2024-11-13 23:40:24,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 268. [2024-11-13 23:40:24,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 217 states have (on average 1.6866359447004609) internal successors, (366), 253 states have internal predecessors, (366), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-13 23:40:24,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 390 transitions. [2024-11-13 23:40:24,877 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 390 transitions. Word has length 31 [2024-11-13 23:40:24,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:40:24,877 INFO L471 AbstractCegarLoop]: Abstraction has 268 states and 390 transitions. [2024-11-13 23:40:24,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 23:40:24,877 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 390 transitions. [2024-11-13 23:40:24,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-13 23:40:24,878 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:40:24,878 INFO L215 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:40:24,902 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-13 23:40:25,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-13 23:40:25,083 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2024-11-13 23:40:25,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:40:25,083 INFO L85 PathProgramCache]: Analyzing trace with hash 2019052853, now seen corresponding path program 1 times [2024-11-13 23:40:25,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:40:25,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407233715] [2024-11-13 23:40:25,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:40:25,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:40:25,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 23:40:25,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1019637195] [2024-11-13 23:40:25,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:40:25,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:40:25,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:40:25,122 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:40:25,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 23:40:25,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:40:25,183 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 23:40:25,184 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:40:25,273 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 23:40:25,273 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 23:40:25,273 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:40:25,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407233715] [2024-11-13 23:40:25,274 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 23:40:25,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019637195] [2024-11-13 23:40:25,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1019637195] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:40:25,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:40:25,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 23:40:25,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250639145] [2024-11-13 23:40:25,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:40:25,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 23:40:25,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:40:25,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 23:40:25,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 23:40:25,276 INFO L87 Difference]: Start difference. First operand 268 states and 390 transitions. Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-13 23:40:25,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:40:25,640 INFO L93 Difference]: Finished difference Result 385 states and 581 transitions. [2024-11-13 23:40:25,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 23:40:25,641 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 31 [2024-11-13 23:40:25,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:40:25,643 INFO L225 Difference]: With dead ends: 385 [2024-11-13 23:40:25,643 INFO L226 Difference]: Without dead ends: 379 [2024-11-13 23:40:25,644 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 23:40:25,644 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 197 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 23:40:25,645 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 70 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 23:40:25,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2024-11-13 23:40:25,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 361. [2024-11-13 23:40:25,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 307 states have (on average 1.703583061889251) internal successors, (523), 343 states have internal predecessors, (523), 15 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-13 23:40:25,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 553 transitions. [2024-11-13 23:40:25,670 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 553 transitions. Word has length 31 [2024-11-13 23:40:25,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:40:25,671 INFO L471 AbstractCegarLoop]: Abstraction has 361 states and 553 transitions. [2024-11-13 23:40:25,671 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-13 23:40:25,671 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 553 transitions. [2024-11-13 23:40:25,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-13 23:40:25,672 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:40:25,672 INFO L215 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:40:25,692 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-13 23:40:25,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-13 23:40:25,877 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2024-11-13 23:40:25,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:40:25,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1418748211, now seen corresponding path program 1 times [2024-11-13 23:40:25,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:40:25,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419388167] [2024-11-13 23:40:25,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:40:25,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:40:25,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 23:40:25,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1009210756] [2024-11-13 23:40:25,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:40:25,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:40:25,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:40:25,918 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:40:25,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 23:40:25,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:40:25,969 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 23:40:25,971 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:40:26,065 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 23:40:26,065 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 23:40:26,065 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:40:26,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419388167] [2024-11-13 23:40:26,065 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 23:40:26,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009210756] [2024-11-13 23:40:26,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1009210756] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:40:26,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:40:26,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 23:40:26,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024985164] [2024-11-13 23:40:26,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:40:26,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 23:40:26,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:40:26,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 23:40:26,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 23:40:26,067 INFO L87 Difference]: Start difference. First operand 361 states and 553 transitions. Second operand has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 23:40:26,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:40:26,521 INFO L93 Difference]: Finished difference Result 372 states and 560 transitions. [2024-11-13 23:40:26,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 23:40:26,521 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 32 [2024-11-13 23:40:26,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:40:26,523 INFO L225 Difference]: With dead ends: 372 [2024-11-13 23:40:26,523 INFO L226 Difference]: Without dead ends: 368 [2024-11-13 23:40:26,524 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 23:40:26,524 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 191 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 23:40:26,524 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 64 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 23:40:26,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2024-11-13 23:40:26,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 359. [2024-11-13 23:40:26,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 305 states have (on average 1.6721311475409837) internal successors, (510), 341 states have internal predecessors, (510), 15 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-13 23:40:26,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 540 transitions. [2024-11-13 23:40:26,550 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 540 transitions. Word has length 32 [2024-11-13 23:40:26,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:40:26,550 INFO L471 AbstractCegarLoop]: Abstraction has 359 states and 540 transitions. [2024-11-13 23:40:26,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 23:40:26,551 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 540 transitions. [2024-11-13 23:40:26,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-13 23:40:26,551 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:40:26,551 INFO L215 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:40:26,571 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-13 23:40:26,752 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:40:26,752 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2024-11-13 23:40:26,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:40:26,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1833870900, now seen corresponding path program 1 times [2024-11-13 23:40:26,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:40:26,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031290464] [2024-11-13 23:40:26,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:40:26,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:40:26,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:40:26,883 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 23:40:26,884 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:40:26,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031290464] [2024-11-13 23:40:26,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031290464] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:40:26,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:40:26,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 23:40:26,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350691842] [2024-11-13 23:40:26,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:40:26,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 23:40:26,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:40:26,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 23:40:26,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 23:40:26,886 INFO L87 Difference]: Start difference. First operand 359 states and 540 transitions. Second operand has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 23:40:27,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:40:27,778 INFO L93 Difference]: Finished difference Result 460 states and 665 transitions. [2024-11-13 23:40:27,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 23:40:27,778 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 32 [2024-11-13 23:40:27,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:40:27,781 INFO L225 Difference]: With dead ends: 460 [2024-11-13 23:40:27,781 INFO L226 Difference]: Without dead ends: 459 [2024-11-13 23:40:27,781 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 23:40:27,782 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 58 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-13 23:40:27,782 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 181 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-13 23:40:27,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2024-11-13 23:40:27,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 392. [2024-11-13 23:40:27,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 337 states have (on average 1.6587537091988132) internal successors, (559), 373 states have internal predecessors, (559), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-13 23:40:27,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 591 transitions. [2024-11-13 23:40:27,809 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 591 transitions. Word has length 32 [2024-11-13 23:40:27,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:40:27,809 INFO L471 AbstractCegarLoop]: Abstraction has 392 states and 591 transitions. [2024-11-13 23:40:27,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 23:40:27,810 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 591 transitions. [2024-11-13 23:40:27,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-13 23:40:27,810 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:40:27,810 INFO L215 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:40:27,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-13 23:40:27,811 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2024-11-13 23:40:27,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:40:27,811 INFO L85 PathProgramCache]: Analyzing trace with hash -617353083, now seen corresponding path program 1 times [2024-11-13 23:40:27,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:40:27,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823975310] [2024-11-13 23:40:27,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:40:27,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:40:27,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:40:27,976 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 23:40:27,976 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:40:27,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823975310] [2024-11-13 23:40:27,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823975310] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:40:27,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:40:27,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 23:40:27,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111114341] [2024-11-13 23:40:27,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:40:27,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 23:40:27,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:40:27,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 23:40:27,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-13 23:40:27,979 INFO L87 Difference]: Start difference. First operand 392 states and 591 transitions. Second operand has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 7 states have internal predecessors, (23), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-13 23:40:28,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:40:28,841 INFO L93 Difference]: Finished difference Result 490 states and 746 transitions. [2024-11-13 23:40:28,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 23:40:28,841 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 7 states have internal predecessors, (23), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 33 [2024-11-13 23:40:28,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:40:28,844 INFO L225 Difference]: With dead ends: 490 [2024-11-13 23:40:28,844 INFO L226 Difference]: Without dead ends: 488 [2024-11-13 23:40:28,844 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2024-11-13 23:40:28,845 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 363 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-13 23:40:28,845 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [363 Valid, 94 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-13 23:40:28,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2024-11-13 23:40:28,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 396. [2024-11-13 23:40:28,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 341 states have (on average 1.653958944281525) internal successors, (564), 377 states have internal predecessors, (564), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-13 23:40:28,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 596 transitions. [2024-11-13 23:40:28,874 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 596 transitions. Word has length 33 [2024-11-13 23:40:28,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:40:28,874 INFO L471 AbstractCegarLoop]: Abstraction has 396 states and 596 transitions. [2024-11-13 23:40:28,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 7 states have internal predecessors, (23), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-13 23:40:28,875 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 596 transitions. [2024-11-13 23:40:28,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-13 23:40:28,875 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:40:28,875 INFO L215 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:40:28,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-13 23:40:28,876 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2024-11-13 23:40:28,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:40:28,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1031521467, now seen corresponding path program 1 times [2024-11-13 23:40:28,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:40:28,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179415780] [2024-11-13 23:40:28,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:40:28,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:40:28,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:40:28,958 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 23:40:28,959 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:40:28,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179415780] [2024-11-13 23:40:28,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179415780] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:40:28,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:40:28,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 23:40:28,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659583192] [2024-11-13 23:40:28,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:40:28,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 23:40:28,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:40:28,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 23:40:28,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 23:40:28,960 INFO L87 Difference]: Start difference. First operand 396 states and 596 transitions. Second operand has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 23:40:29,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:40:29,709 INFO L93 Difference]: Finished difference Result 460 states and 661 transitions. [2024-11-13 23:40:29,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 23:40:29,710 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 33 [2024-11-13 23:40:29,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:40:29,712 INFO L225 Difference]: With dead ends: 460 [2024-11-13 23:40:29,712 INFO L226 Difference]: Without dead ends: 459 [2024-11-13 23:40:29,713 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 23:40:29,713 INFO L432 NwaCegarLoop]: 92 mSDtfsCounter, 56 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-13 23:40:29,714 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 203 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-13 23:40:29,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2024-11-13 23:40:29,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 407. [2024-11-13 23:40:29,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 352 states have (on average 1.6448863636363635) internal successors, (579), 388 states have internal predecessors, (579), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-13 23:40:29,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 611 transitions. [2024-11-13 23:40:29,749 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 611 transitions. Word has length 33 [2024-11-13 23:40:29,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:40:29,749 INFO L471 AbstractCegarLoop]: Abstraction has 407 states and 611 transitions. [2024-11-13 23:40:29,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 23:40:29,749 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 611 transitions. [2024-11-13 23:40:29,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-13 23:40:29,751 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:40:29,751 INFO L215 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:40:29,751 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-13 23:40:29,751 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2024-11-13 23:40:29,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:40:29,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1015422953, now seen corresponding path program 1 times [2024-11-13 23:40:29,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:40:29,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157018921] [2024-11-13 23:40:29,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:40:29,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:40:29,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:40:29,927 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 23:40:29,927 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:40:29,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157018921] [2024-11-13 23:40:29,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157018921] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:40:29,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:40:29,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 23:40:29,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22355709] [2024-11-13 23:40:29,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:40:29,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 23:40:29,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:40:29,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 23:40:29,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 23:40:29,929 INFO L87 Difference]: Start difference. First operand 407 states and 611 transitions. Second operand has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 23:40:31,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:40:31,031 INFO L93 Difference]: Finished difference Result 460 states and 659 transitions. [2024-11-13 23:40:31,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 23:40:31,032 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 33 [2024-11-13 23:40:31,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:40:31,034 INFO L225 Difference]: With dead ends: 460 [2024-11-13 23:40:31,034 INFO L226 Difference]: Without dead ends: 459 [2024-11-13 23:40:31,035 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 23:40:31,035 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 56 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-13 23:40:31,036 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 197 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-13 23:40:31,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2024-11-13 23:40:31,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 409. [2024-11-13 23:40:31,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 354 states have (on average 1.6412429378531073) internal successors, (581), 390 states have internal predecessors, (581), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-13 23:40:31,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 613 transitions. [2024-11-13 23:40:31,073 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 613 transitions. Word has length 33 [2024-11-13 23:40:31,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:40:31,074 INFO L471 AbstractCegarLoop]: Abstraction has 409 states and 613 transitions. [2024-11-13 23:40:31,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 23:40:31,074 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 613 transitions. [2024-11-13 23:40:31,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-13 23:40:31,077 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:40:31,077 INFO L215 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:40:31,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-13 23:40:31,078 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2024-11-13 23:40:31,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:40:31,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1958076259, now seen corresponding path program 1 times [2024-11-13 23:40:31,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:40:31,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241715195] [2024-11-13 23:40:31,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:40:31,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:40:31,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:40:31,236 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 23:40:31,236 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:40:31,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241715195] [2024-11-13 23:40:31,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241715195] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:40:31,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:40:31,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 23:40:31,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735806189] [2024-11-13 23:40:31,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:40:31,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 23:40:31,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:40:31,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 23:40:31,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-13 23:40:31,238 INFO L87 Difference]: Start difference. First operand 409 states and 613 transitions. Second operand has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-13 23:40:31,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:40:31,923 INFO L93 Difference]: Finished difference Result 416 states and 620 transitions. [2024-11-13 23:40:31,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 23:40:31,925 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 34 [2024-11-13 23:40:31,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:40:31,929 INFO L225 Difference]: With dead ends: 416 [2024-11-13 23:40:31,929 INFO L226 Difference]: Without dead ends: 414 [2024-11-13 23:40:31,930 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2024-11-13 23:40:31,931 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 401 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 23:40:31,932 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [401 Valid, 72 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 23:40:31,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2024-11-13 23:40:31,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 409. [2024-11-13 23:40:31,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 354 states have (on average 1.6271186440677967) internal successors, (576), 390 states have internal predecessors, (576), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-13 23:40:31,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 608 transitions. [2024-11-13 23:40:31,961 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 608 transitions. Word has length 34 [2024-11-13 23:40:31,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:40:31,961 INFO L471 AbstractCegarLoop]: Abstraction has 409 states and 608 transitions. [2024-11-13 23:40:31,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-13 23:40:31,962 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 608 transitions. [2024-11-13 23:40:31,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-13 23:40:31,962 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:40:31,963 INFO L215 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:40:31,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-13 23:40:31,963 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2024-11-13 23:40:31,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:40:31,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1912394289, now seen corresponding path program 1 times [2024-11-13 23:40:31,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:40:31,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667838923] [2024-11-13 23:40:31,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:40:31,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:40:31,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:40:32,149 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 23:40:32,149 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:40:32,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667838923] [2024-11-13 23:40:32,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667838923] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:40:32,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:40:32,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 23:40:32,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662565053] [2024-11-13 23:40:32,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:40:32,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 23:40:32,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:40:32,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 23:40:32,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 23:40:32,150 INFO L87 Difference]: Start difference. First operand 409 states and 608 transitions. Second operand has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 23:40:33,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:40:33,561 INFO L93 Difference]: Finished difference Result 460 states and 651 transitions. [2024-11-13 23:40:33,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 23:40:33,561 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 34 [2024-11-13 23:40:33,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:40:33,563 INFO L225 Difference]: With dead ends: 460 [2024-11-13 23:40:33,564 INFO L226 Difference]: Without dead ends: 459 [2024-11-13 23:40:33,564 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 23:40:33,564 INFO L432 NwaCegarLoop]: 102 mSDtfsCounter, 55 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-13 23:40:33,565 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 198 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-13 23:40:33,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2024-11-13 23:40:33,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 411. [2024-11-13 23:40:33,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 356 states have (on average 1.6235955056179776) internal successors, (578), 392 states have internal predecessors, (578), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-13 23:40:33,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 610 transitions. [2024-11-13 23:40:33,592 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 610 transitions. Word has length 34 [2024-11-13 23:40:33,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:40:33,593 INFO L471 AbstractCegarLoop]: Abstraction has 411 states and 610 transitions. [2024-11-13 23:40:33,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 23:40:33,593 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 610 transitions. [2024-11-13 23:40:33,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-13 23:40:33,593 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:40:33,593 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:40:33,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-13 23:40:33,594 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2024-11-13 23:40:33,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:40:33,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1172427968, now seen corresponding path program 1 times [2024-11-13 23:40:33,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:40:33,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974322241] [2024-11-13 23:40:33,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:40:33,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:40:33,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 23:40:33,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1384877992] [2024-11-13 23:40:33,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:40:33,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:40:33,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:40:33,627 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:40:33,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 23:40:33,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:40:33,677 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-13 23:40:33,679 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:40:33,958 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 23:40:33,958 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:40:37,506 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:40:37,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974322241] [2024-11-13 23:40:37,509 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 23:40:37,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384877992] [2024-11-13 23:40:37,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1384877992] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:40:37,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1790492389] [2024-11-13 23:40:37,512 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2024-11-13 23:40:37,512 INFO L166 IcfgInterpreter]: Building call graph [2024-11-13 23:40:37,512 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-13 23:40:37,512 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-13 23:40:37,513 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-13 23:40:41,007 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 81 for LOIs [2024-11-13 23:40:41,117 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2024-11-13 23:40:41,118 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-13 23:41:01,295 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '10456#(exists ((|v_ULTIMATE.start_main_~a~0#1_86| Int) (|v_ULTIMATE.start_main_~b~0#1_86| Int)) (and (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_~a~0#1_85| Int)) (and (<= (div |v_ULTIMATE.start_main_~a~0#1_85| 2) 9223372036854775807) (= (div |v_ULTIMATE.start_main_~a~0#1_85| 2) |v_ULTIMATE.start_main_~a~0#1_86|) (= (mod |v_ULTIMATE.start_main_~a~0#1_85| 2) 0) (<= 0 (+ (div |v_ULTIMATE.start_main_~a~0#1_85| 2) 9223372036854775808)))) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (= (mod |ULTIMATE.start_main_~p~0#1| 4) 0) (= |ULTIMATE.start_main_~q~0#1| 0) (<= 0 (+ (div |ULTIMATE.start_main_~p~0#1| 4) 2305843009213693952)) (<= |ULTIMATE.start_main_~y~0#1| 20) (<= (+ (* |v_ULTIMATE.start_main_~b~0#1_86| |v_ULTIMATE.start_main_~a~0#1_86|) 9223372036854775809) 0) (<= |ULTIMATE.start_main_~x~0#1| 20) (<= (div |ULTIMATE.start_main_~p~0#1| 4) 2305843009213693951) (exists ((|v_ULTIMATE.start_main_~b~0#1_85| Int)) (and (<= 0 (+ (div |v_ULTIMATE.start_main_~b~0#1_85| 2) 9223372036854775808)) (= |v_ULTIMATE.start_main_~b~0#1_86| (div |v_ULTIMATE.start_main_~b~0#1_85| 2)) (= (mod |v_ULTIMATE.start_main_~b~0#1_85| 2) 0) (<= (div |v_ULTIMATE.start_main_~b~0#1_85| 2) 9223372036854775807)))))' at error location [2024-11-13 23:41:01,295 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-13 23:41:01,295 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-13 23:41:01,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2024-11-13 23:41:01,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742926576] [2024-11-13 23:41:01,295 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-13 23:41:01,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 23:41:01,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:41:01,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 23:41:01,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=1193, Unknown=7, NotChecked=0, Total=1406 [2024-11-13 23:41:01,298 INFO L87 Difference]: Start difference. First operand 411 states and 610 transitions. Second operand has 10 states, 8 states have (on average 3.125) internal successors, (25), 9 states have internal predecessors, (25), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 23:41:01,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:41:01,947 INFO L93 Difference]: Finished difference Result 481 states and 711 transitions. [2024-11-13 23:41:01,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 23:41:01,948 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 3.125) internal successors, (25), 9 states have internal predecessors, (25), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 34 [2024-11-13 23:41:01,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:41:01,950 INFO L225 Difference]: With dead ends: 481 [2024-11-13 23:41:01,950 INFO L226 Difference]: Without dead ends: 473 [2024-11-13 23:41:01,953 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 595 ImplicationChecksByTransitivity, 21.9s TimeCoverageRelationStatistics Valid=261, Invalid=1454, Unknown=7, NotChecked=0, Total=1722 [2024-11-13 23:41:01,954 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 203 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 23:41:01,954 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 171 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 23:41:01,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2024-11-13 23:41:01,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 449. [2024-11-13 23:41:01,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 392 states have (on average 1.594387755102041) internal successors, (625), 428 states have internal predecessors, (625), 18 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-13 23:41:01,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 661 transitions. [2024-11-13 23:41:01,996 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 661 transitions. Word has length 34 [2024-11-13 23:41:01,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:41:01,997 INFO L471 AbstractCegarLoop]: Abstraction has 449 states and 661 transitions. [2024-11-13 23:41:01,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 3.125) internal successors, (25), 9 states have internal predecessors, (25), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 23:41:01,997 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 661 transitions. [2024-11-13 23:41:01,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-13 23:41:01,998 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:41:01,998 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:41:02,018 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-13 23:41:02,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-13 23:41:02,199 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2024-11-13 23:41:02,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:41:02,199 INFO L85 PathProgramCache]: Analyzing trace with hash -863880199, now seen corresponding path program 1 times [2024-11-13 23:41:02,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:41:02,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571676839] [2024-11-13 23:41:02,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:41:02,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:41:02,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 23:41:02,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1376023790] [2024-11-13 23:41:02,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:41:02,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:41:02,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:41:02,230 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:41:02,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 23:41:02,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:41:02,284 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-13 23:41:02,286 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:41:02,420 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 23:41:02,420 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 23:41:02,420 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:41:02,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571676839] [2024-11-13 23:41:02,421 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 23:41:02,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376023790] [2024-11-13 23:41:02,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1376023790] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:41:02,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:41:02,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-13 23:41:02,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091644792] [2024-11-13 23:41:02,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:41:02,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 23:41:02,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:41:02,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 23:41:02,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-13 23:41:02,422 INFO L87 Difference]: Start difference. First operand 449 states and 661 transitions. Second operand has 8 states, 6 states have (on average 4.333333333333333) internal successors, (26), 7 states have internal predecessors, (26), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 23:41:02,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:41:02,875 INFO L93 Difference]: Finished difference Result 460 states and 669 transitions. [2024-11-13 23:41:02,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 23:41:02,875 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 4.333333333333333) internal successors, (26), 7 states have internal predecessors, (26), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 35 [2024-11-13 23:41:02,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:41:02,877 INFO L225 Difference]: With dead ends: 460 [2024-11-13 23:41:02,877 INFO L226 Difference]: Without dead ends: 455 [2024-11-13 23:41:02,877 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-11-13 23:41:02,878 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 159 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 23:41:02,878 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 183 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 23:41:02,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2024-11-13 23:41:02,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 449. [2024-11-13 23:41:02,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 392 states have (on average 1.5841836734693877) internal successors, (621), 428 states have internal predecessors, (621), 18 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-13 23:41:02,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 657 transitions. [2024-11-13 23:41:02,906 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 657 transitions. Word has length 35 [2024-11-13 23:41:02,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:41:02,907 INFO L471 AbstractCegarLoop]: Abstraction has 449 states and 657 transitions. [2024-11-13 23:41:02,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 4.333333333333333) internal successors, (26), 7 states have internal predecessors, (26), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 23:41:02,907 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 657 transitions. [2024-11-13 23:41:02,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-13 23:41:02,907 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:41:02,907 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:41:02,927 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-13 23:41:03,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-13 23:41:03,108 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2024-11-13 23:41:03,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:41:03,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1985528689, now seen corresponding path program 1 times [2024-11-13 23:41:03,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:41:03,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686497694] [2024-11-13 23:41:03,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:41:03,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:41:03,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 23:41:03,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1420341488] [2024-11-13 23:41:03,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:41:03,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:41:03,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:41:03,127 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:41:03,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 23:41:03,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:41:03,185 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-13 23:41:03,187 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:41:03,791 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 23:41:03,791 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:41:05,453 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:41:05,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686497694] [2024-11-13 23:41:05,453 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 23:41:05,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420341488] [2024-11-13 23:41:05,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420341488] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:41:05,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1175887772] [2024-11-13 23:41:05,456 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2024-11-13 23:41:05,456 INFO L166 IcfgInterpreter]: Building call graph [2024-11-13 23:41:05,456 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-13 23:41:05,456 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-13 23:41:05,456 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-13 23:41:08,106 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 81 for LOIs [2024-11-13 23:41:08,215 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2024-11-13 23:41:08,216 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-13 23:41:29,325 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '12744#(and (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (exists ((|v_ULTIMATE.start_main_~a~0#1_94| Int) (|v_ULTIMATE.start_main_~b~0#1_93| Int)) (<= 9223372036854775808 (* |v_ULTIMATE.start_main_~b~0#1_93| |v_ULTIMATE.start_main_~a~0#1_94|))) (= |ULTIMATE.start_main_~q~0#1| 0) (<= |ULTIMATE.start_main_~y~0#1| 20) (<= |ULTIMATE.start_main_~x~0#1| 20))' at error location [2024-11-13 23:41:29,325 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-13 23:41:29,325 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-13 23:41:29,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2024-11-13 23:41:29,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825673851] [2024-11-13 23:41:29,326 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-13 23:41:29,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 23:41:29,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:41:29,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 23:41:29,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=1259, Unknown=6, NotChecked=0, Total=1482 [2024-11-13 23:41:29,327 INFO L87 Difference]: Start difference. First operand 449 states and 657 transitions. Second operand has 11 states, 9 states have (on average 2.888888888888889) internal successors, (26), 10 states have internal predecessors, (26), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 23:41:32,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:41:32,155 INFO L93 Difference]: Finished difference Result 762 states and 1142 transitions. [2024-11-13 23:41:32,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-13 23:41:32,156 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.888888888888889) internal successors, (26), 10 states have internal predecessors, (26), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 35 [2024-11-13 23:41:32,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:41:32,158 INFO L225 Difference]: With dead ends: 762 [2024-11-13 23:41:32,158 INFO L226 Difference]: Without dead ends: 656 [2024-11-13 23:41:32,159 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 693 ImplicationChecksByTransitivity, 22.9s TimeCoverageRelationStatistics Valid=373, Invalid=1973, Unknown=6, NotChecked=0, Total=2352 [2024-11-13 23:41:32,160 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 323 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 983 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 1054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-13 23:41:32,161 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 182 Invalid, 1054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 983 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-13 23:41:32,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2024-11-13 23:41:32,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 464. [2024-11-13 23:41:32,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 408 states have (on average 1.4975490196078431) internal successors, (611), 444 states have internal predecessors, (611), 17 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-13 23:41:32,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 645 transitions. [2024-11-13 23:41:32,210 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 645 transitions. Word has length 35 [2024-11-13 23:41:32,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:41:32,211 INFO L471 AbstractCegarLoop]: Abstraction has 464 states and 645 transitions. [2024-11-13 23:41:32,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.888888888888889) internal successors, (26), 10 states have internal predecessors, (26), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 23:41:32,211 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 645 transitions. [2024-11-13 23:41:32,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-13 23:41:32,212 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:41:32,212 INFO L215 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:41:32,232 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-13 23:41:32,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-13 23:41:32,416 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2024-11-13 23:41:32,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:41:32,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1196113545, now seen corresponding path program 1 times [2024-11-13 23:41:32,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:41:32,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670877134] [2024-11-13 23:41:32,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:41:32,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:41:32,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 23:41:32,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [889575871] [2024-11-13 23:41:32,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:41:32,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:41:32,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:41:32,457 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:41:32,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-13 23:41:32,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:41:32,507 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-13 23:41:32,509 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:41:32,698 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 23:41:32,698 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 23:41:32,698 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:41:32,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670877134] [2024-11-13 23:41:32,699 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 23:41:32,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [889575871] [2024-11-13 23:41:32,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [889575871] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:41:32,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:41:32,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 23:41:32,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335329414] [2024-11-13 23:41:32,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:41:32,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 23:41:32,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:41:32,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 23:41:32,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-13 23:41:32,700 INFO L87 Difference]: Start difference. First operand 464 states and 645 transitions. Second operand has 7 states, 6 states have (on average 4.5) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-13 23:41:33,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:41:33,701 INFO L93 Difference]: Finished difference Result 552 states and 774 transitions. [2024-11-13 23:41:33,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 23:41:33,702 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.5) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 37 [2024-11-13 23:41:33,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:41:33,704 INFO L225 Difference]: With dead ends: 552 [2024-11-13 23:41:33,704 INFO L226 Difference]: Without dead ends: 545 [2024-11-13 23:41:33,705 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2024-11-13 23:41:33,706 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 400 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-13 23:41:33,706 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [402 Valid, 71 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-13 23:41:33,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2024-11-13 23:41:33,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 499. [2024-11-13 23:41:33,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 442 states have (on average 1.497737556561086) internal successors, (662), 478 states have internal predecessors, (662), 18 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-13 23:41:33,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 698 transitions. [2024-11-13 23:41:33,740 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 698 transitions. Word has length 37 [2024-11-13 23:41:33,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:41:33,740 INFO L471 AbstractCegarLoop]: Abstraction has 499 states and 698 transitions. [2024-11-13 23:41:33,740 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.5) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-13 23:41:33,740 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 698 transitions. [2024-11-13 23:41:33,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-13 23:41:33,741 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:41:33,741 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:41:33,762 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-13 23:41:33,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-13 23:41:33,944 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2024-11-13 23:41:33,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:41:33,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1127592339, now seen corresponding path program 1 times [2024-11-13 23:41:33,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:41:33,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111747814] [2024-11-13 23:41:33,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:41:33,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:41:33,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 23:41:33,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1056738421] [2024-11-13 23:41:33,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:41:33,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:41:33,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:41:33,968 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:41:33,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-13 23:41:34,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:41:34,022 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-13 23:41:34,024 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:41:34,705 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 23:41:34,705 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:41:36,887 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:41:36,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111747814] [2024-11-13 23:41:36,888 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 23:41:36,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056738421] [2024-11-13 23:41:36,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1056738421] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:41:36,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1056947848] [2024-11-13 23:41:36,890 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2024-11-13 23:41:36,890 INFO L166 IcfgInterpreter]: Building call graph [2024-11-13 23:41:36,890 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-13 23:41:36,891 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-13 23:41:36,891 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-13 23:41:39,222 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 81 for LOIs [2024-11-13 23:41:39,263 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2024-11-13 23:41:39,264 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-13 23:41:56,928 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '15521#(exists ((|v_ULTIMATE.start_main_~a~0#1_102| Int) (|v_ULTIMATE.start_main_~p~0#1_67| Int) (|v_ULTIMATE.start_main_~b~0#1_101| Int)) (and (<= 0 (+ 9223372036854775808 (* |v_ULTIMATE.start_main_~a~0#1_102| |v_ULTIMATE.start_main_~b~0#1_101|))) (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (exists ((|v_ULTIMATE.start_main_~a~0#1_101| Int)) (and (= |v_ULTIMATE.start_main_~a~0#1_102| (div |v_ULTIMATE.start_main_~a~0#1_101| 2)) (<= (div |v_ULTIMATE.start_main_~a~0#1_101| 2) 9223372036854775807) (= (mod |v_ULTIMATE.start_main_~a~0#1_101| 2) 0))) (<= 9223372036854775808 (* |v_ULTIMATE.start_main_~a~0#1_102| |v_ULTIMATE.start_main_~b~0#1_101| |v_ULTIMATE.start_main_~p~0#1_67|)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= (* |v_ULTIMATE.start_main_~a~0#1_102| |v_ULTIMATE.start_main_~b~0#1_101|) 9223372036854775807) (= (mod |v_ULTIMATE.start_main_~p~0#1_67| 4) 0) (= |ULTIMATE.start_main_~q~0#1| 0) (<= |ULTIMATE.start_main_~y~0#1| 20) (<= (div |v_ULTIMATE.start_main_~p~0#1_67| 4) 2305843009213693951) (<= |ULTIMATE.start_main_~x~0#1| 20) (exists ((|v_ULTIMATE.start_main_~b~0#1_100| Int)) (and (= (mod |v_ULTIMATE.start_main_~b~0#1_100| 2) 0) (<= (div |v_ULTIMATE.start_main_~b~0#1_100| 2) 9223372036854775807) (= (div |v_ULTIMATE.start_main_~b~0#1_100| 2) |v_ULTIMATE.start_main_~b~0#1_101|))) (<= 0 (+ (div |v_ULTIMATE.start_main_~p~0#1_67| 4) 2305843009213693952))))' at error location [2024-11-13 23:41:56,928 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-13 23:41:56,928 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-13 23:41:56,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2024-11-13 23:41:56,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976046480] [2024-11-13 23:41:56,929 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-13 23:41:56,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-13 23:41:56,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:41:56,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-13 23:41:56,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=1328, Unknown=4, NotChecked=0, Total=1560 [2024-11-13 23:41:56,930 INFO L87 Difference]: Start difference. First operand 499 states and 698 transitions. Second operand has 12 states, 10 states have (on average 2.8) internal successors, (28), 11 states have internal predecessors, (28), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 23:41:57,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:41:57,896 INFO L93 Difference]: Finished difference Result 544 states and 756 transitions. [2024-11-13 23:41:57,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 23:41:57,897 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.8) internal successors, (28), 11 states have internal predecessors, (28), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 37 [2024-11-13 23:41:57,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:41:57,899 INFO L225 Difference]: With dead ends: 544 [2024-11-13 23:41:57,899 INFO L226 Difference]: Without dead ends: 543 [2024-11-13 23:41:57,900 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 46 SyntacticMatches, 3 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 749 ImplicationChecksByTransitivity, 19.5s TimeCoverageRelationStatistics Valid=300, Invalid=1766, Unknown=4, NotChecked=0, Total=2070 [2024-11-13 23:41:57,900 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 197 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-13 23:41:57,900 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 137 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-13 23:41:57,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2024-11-13 23:41:57,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 509. [2024-11-13 23:41:57,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 452 states have (on average 1.4823008849557522) internal successors, (670), 488 states have internal predecessors, (670), 18 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-13 23:41:57,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 706 transitions. [2024-11-13 23:41:57,940 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 706 transitions. Word has length 37 [2024-11-13 23:41:57,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:41:57,940 INFO L471 AbstractCegarLoop]: Abstraction has 509 states and 706 transitions. [2024-11-13 23:41:57,940 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.8) internal successors, (28), 11 states have internal predecessors, (28), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 23:41:57,940 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 706 transitions. [2024-11-13 23:41:57,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-13 23:41:57,941 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:41:57,941 INFO L215 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:41:57,962 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-13 23:41:58,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:41:58,146 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2024-11-13 23:41:58,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:41:58,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1575185631, now seen corresponding path program 1 times [2024-11-13 23:41:58,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:41:58,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038583733] [2024-11-13 23:41:58,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:41:58,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:41:58,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 23:41:58,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1758128382] [2024-11-13 23:41:58,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:41:58,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:41:58,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:41:58,185 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:41:58,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-13 23:41:58,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:41:58,237 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-13 23:41:58,240 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:41:58,467 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 23:41:58,467 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 23:41:58,468 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:41:58,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038583733] [2024-11-13 23:41:58,468 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 23:41:58,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758128382] [2024-11-13 23:41:58,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758128382] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:41:58,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:41:58,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 23:41:58,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629684945] [2024-11-13 23:41:58,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:41:58,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 23:41:58,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:41:58,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 23:41:58,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-13 23:41:58,469 INFO L87 Difference]: Start difference. First operand 509 states and 706 transitions. Second operand has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 7 states have internal predecessors, (28), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-13 23:41:59,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:41:59,150 INFO L93 Difference]: Finished difference Result 533 states and 736 transitions. [2024-11-13 23:41:59,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 23:41:59,150 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 7 states have internal predecessors, (28), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 38 [2024-11-13 23:41:59,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:41:59,152 INFO L225 Difference]: With dead ends: 533 [2024-11-13 23:41:59,152 INFO L226 Difference]: Without dead ends: 532 [2024-11-13 23:41:59,153 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2024-11-13 23:41:59,153 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 384 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 23:41:59,153 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 68 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 23:41:59,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2024-11-13 23:41:59,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 509. [2024-11-13 23:41:59,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 452 states have (on average 1.4756637168141593) internal successors, (667), 488 states have internal predecessors, (667), 18 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-13 23:41:59,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 703 transitions. [2024-11-13 23:41:59,189 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 703 transitions. Word has length 38 [2024-11-13 23:41:59,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:41:59,189 INFO L471 AbstractCegarLoop]: Abstraction has 509 states and 703 transitions. [2024-11-13 23:41:59,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 7 states have internal predecessors, (28), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-13 23:41:59,189 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 703 transitions. [2024-11-13 23:41:59,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-13 23:41:59,190 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:41:59,190 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:41:59,210 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-13 23:41:59,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:41:59,394 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2024-11-13 23:41:59,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:41:59,395 INFO L85 PathProgramCache]: Analyzing trace with hash 595624196, now seen corresponding path program 1 times [2024-11-13 23:41:59,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:41:59,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037966097] [2024-11-13 23:41:59,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:41:59,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:41:59,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:41:59,488 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 23:41:59,488 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:41:59,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037966097] [2024-11-13 23:41:59,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037966097] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:41:59,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:41:59,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 23:41:59,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115661386] [2024-11-13 23:41:59,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:41:59,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 23:41:59,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:41:59,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 23:41:59,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 23:41:59,490 INFO L87 Difference]: Start difference. First operand 509 states and 703 transitions. Second operand has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 23:42:00,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:42:00,921 INFO L93 Difference]: Finished difference Result 529 states and 720 transitions. [2024-11-13 23:42:00,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 23:42:00,921 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 38 [2024-11-13 23:42:00,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:42:00,924 INFO L225 Difference]: With dead ends: 529 [2024-11-13 23:42:00,924 INFO L226 Difference]: Without dead ends: 528 [2024-11-13 23:42:00,925 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 23:42:00,925 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 42 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-13 23:42:00,925 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 165 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-13 23:42:00,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2024-11-13 23:42:00,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 509. [2024-11-13 23:42:00,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 452 states have (on average 1.4734513274336283) internal successors, (666), 488 states have internal predecessors, (666), 18 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-13 23:42:00,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 702 transitions. [2024-11-13 23:42:00,964 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 702 transitions. Word has length 38 [2024-11-13 23:42:00,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:42:00,964 INFO L471 AbstractCegarLoop]: Abstraction has 509 states and 702 transitions. [2024-11-13 23:42:00,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 23:42:00,965 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 702 transitions. [2024-11-13 23:42:00,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-13 23:42:00,965 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:42:00,965 INFO L215 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:42:00,965 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-13 23:42:00,966 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2024-11-13 23:42:00,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:42:00,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1586114165, now seen corresponding path program 1 times [2024-11-13 23:42:00,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:42:00,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304800494] [2024-11-13 23:42:00,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:42:00,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:42:00,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:42:01,040 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 23:42:01,040 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:42:01,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304800494] [2024-11-13 23:42:01,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304800494] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:42:01,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:42:01,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 23:42:01,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737654479] [2024-11-13 23:42:01,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:42:01,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 23:42:01,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:42:01,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 23:42:01,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 23:42:01,043 INFO L87 Difference]: Start difference. First operand 509 states and 702 transitions. Second operand has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 23:42:01,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:42:01,677 INFO L93 Difference]: Finished difference Result 529 states and 719 transitions. [2024-11-13 23:42:01,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 23:42:01,677 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 39 [2024-11-13 23:42:01,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:42:01,679 INFO L225 Difference]: With dead ends: 529 [2024-11-13 23:42:01,679 INFO L226 Difference]: Without dead ends: 528 [2024-11-13 23:42:01,680 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 23:42:01,681 INFO L432 NwaCegarLoop]: 88 mSDtfsCounter, 28 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 23:42:01,681 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 173 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 23:42:01,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2024-11-13 23:42:01,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 520. [2024-11-13 23:42:01,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 520 states, 463 states have (on average 1.4665226781857452) internal successors, (679), 499 states have internal predecessors, (679), 18 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-13 23:42:01,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 715 transitions. [2024-11-13 23:42:01,716 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 715 transitions. Word has length 39 [2024-11-13 23:42:01,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:42:01,717 INFO L471 AbstractCegarLoop]: Abstraction has 520 states and 715 transitions. [2024-11-13 23:42:01,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 23:42:01,717 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 715 transitions. [2024-11-13 23:42:01,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-13 23:42:01,718 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:42:01,718 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:42:01,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-13 23:42:01,718 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2024-11-13 23:42:01,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:42:01,719 INFO L85 PathProgramCache]: Analyzing trace with hash 146318269, now seen corresponding path program 1 times [2024-11-13 23:42:01,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:42:01,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598228598] [2024-11-13 23:42:01,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:42:01,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:42:01,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 23:42:01,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [453818320] [2024-11-13 23:42:01,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:42:01,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:42:01,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:42:01,737 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:42:01,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-13 23:42:01,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:42:01,783 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-13 23:42:01,785 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:42:01,958 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 23:42:01,958 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 23:42:01,959 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:42:01,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598228598] [2024-11-13 23:42:01,959 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 23:42:01,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [453818320] [2024-11-13 23:42:01,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [453818320] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:42:01,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:42:01,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 23:42:01,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843334975] [2024-11-13 23:42:01,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:42:01,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 23:42:01,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:42:01,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 23:42:01,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-13 23:42:01,960 INFO L87 Difference]: Start difference. First operand 520 states and 715 transitions. Second operand has 7 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 23:42:02,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:42:02,853 INFO L93 Difference]: Finished difference Result 527 states and 720 transitions. [2024-11-13 23:42:02,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 23:42:02,853 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 39 [2024-11-13 23:42:02,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:42:02,855 INFO L225 Difference]: With dead ends: 527 [2024-11-13 23:42:02,855 INFO L226 Difference]: Without dead ends: 525 [2024-11-13 23:42:02,855 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-11-13 23:42:02,855 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 152 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-13 23:42:02,856 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 198 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-13 23:42:02,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2024-11-13 23:42:02,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 520. [2024-11-13 23:42:02,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 520 states, 463 states have (on average 1.4622030237580994) internal successors, (677), 499 states have internal predecessors, (677), 18 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-13 23:42:02,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 713 transitions. [2024-11-13 23:42:02,890 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 713 transitions. Word has length 39 [2024-11-13 23:42:02,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:42:02,890 INFO L471 AbstractCegarLoop]: Abstraction has 520 states and 713 transitions. [2024-11-13 23:42:02,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 23:42:02,890 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 713 transitions. [2024-11-13 23:42:02,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-13 23:42:02,891 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:42:02,891 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:42:02,912 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-13 23:42:03,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:42:03,092 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2024-11-13 23:42:03,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:42:03,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1284480949, now seen corresponding path program 1 times [2024-11-13 23:42:03,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:42:03,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257305338] [2024-11-13 23:42:03,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:42:03,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:42:03,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:42:03,457 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-13 23:42:03,457 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:42:03,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257305338] [2024-11-13 23:42:03,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257305338] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:42:03,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:42:03,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 23:42:03,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173256048] [2024-11-13 23:42:03,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:42:03,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 23:42:03,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:42:03,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 23:42:03,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 23:42:03,459 INFO L87 Difference]: Start difference. First operand 520 states and 713 transitions. Second operand has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 23:42:04,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:42:04,535 INFO L93 Difference]: Finished difference Result 529 states and 715 transitions. [2024-11-13 23:42:04,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 23:42:04,536 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 39 [2024-11-13 23:42:04,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:42:04,538 INFO L225 Difference]: With dead ends: 529 [2024-11-13 23:42:04,538 INFO L226 Difference]: Without dead ends: 528 [2024-11-13 23:42:04,539 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 23:42:04,539 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 49 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-13 23:42:04,539 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 154 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-13 23:42:04,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2024-11-13 23:42:04,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 520. [2024-11-13 23:42:04,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 520 states, 463 states have (on average 1.4600431965442764) internal successors, (676), 499 states have internal predecessors, (676), 18 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-13 23:42:04,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 712 transitions. [2024-11-13 23:42:04,574 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 712 transitions. Word has length 39 [2024-11-13 23:42:04,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:42:04,574 INFO L471 AbstractCegarLoop]: Abstraction has 520 states and 712 transitions. [2024-11-13 23:42:04,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 23:42:04,574 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 712 transitions. [2024-11-13 23:42:04,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-13 23:42:04,575 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:42:04,575 INFO L215 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:42:04,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-13 23:42:04,575 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2024-11-13 23:42:04,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:42:04,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1924898717, now seen corresponding path program 1 times [2024-11-13 23:42:04,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:42:04,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797253312] [2024-11-13 23:42:04,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:42:04,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:42:04,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:42:04,680 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 23:42:04,681 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:42:04,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797253312] [2024-11-13 23:42:04,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797253312] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:42:04,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 23:42:04,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 23:42:04,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713752769] [2024-11-13 23:42:04,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:42:04,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 23:42:04,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:42:04,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 23:42:04,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 23:42:04,682 INFO L87 Difference]: Start difference. First operand 520 states and 712 transitions. Second operand has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 23:42:05,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:42:05,219 INFO L93 Difference]: Finished difference Result 529 states and 714 transitions. [2024-11-13 23:42:05,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 23:42:05,219 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 40 [2024-11-13 23:42:05,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:42:05,222 INFO L225 Difference]: With dead ends: 529 [2024-11-13 23:42:05,222 INFO L226 Difference]: Without dead ends: 528 [2024-11-13 23:42:05,222 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 23:42:05,222 INFO L432 NwaCegarLoop]: 92 mSDtfsCounter, 26 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 23:42:05,223 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 177 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 23:42:05,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2024-11-13 23:42:05,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 521. [2024-11-13 23:42:05,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 464 states have (on average 1.456896551724138) internal successors, (676), 500 states have internal predecessors, (676), 18 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-13 23:42:05,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 712 transitions. [2024-11-13 23:42:05,259 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 712 transitions. Word has length 40 [2024-11-13 23:42:05,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:42:05,259 INFO L471 AbstractCegarLoop]: Abstraction has 521 states and 712 transitions. [2024-11-13 23:42:05,260 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 23:42:05,260 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 712 transitions. [2024-11-13 23:42:05,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-13 23:42:05,260 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:42:05,260 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:42:05,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-13 23:42:05,261 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2024-11-13 23:42:05,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:42:05,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1305397109, now seen corresponding path program 1 times [2024-11-13 23:42:05,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:42:05,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025400833] [2024-11-13 23:42:05,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:42:05,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:42:05,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 23:42:05,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [849355793] [2024-11-13 23:42:05,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:42:05,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:42:05,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:42:05,281 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:42:05,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-13 23:42:05,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:42:05,348 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-13 23:42:05,350 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:42:05,549 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 23:42:05,550 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:42:07,073 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:42:07,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025400833] [2024-11-13 23:42:07,074 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 23:42:07,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849355793] [2024-11-13 23:42:07,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849355793] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:42:07,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1268800413] [2024-11-13 23:42:07,076 INFO L159 IcfgInterpreter]: Started Sifa with 31 locations of interest [2024-11-13 23:42:07,076 INFO L166 IcfgInterpreter]: Building call graph [2024-11-13 23:42:07,076 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-13 23:42:07,076 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-13 23:42:07,076 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-13 23:42:08,815 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 41 for LOIs [2024-11-13 23:42:08,824 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2024-11-13 23:42:08,826 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-13 23:42:11,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1268800413] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:42:11,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 23:42:11,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [6] total 22 [2024-11-13 23:42:11,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672520599] [2024-11-13 23:42:11,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:42:11,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-13 23:42:11,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:42:11,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-13 23:42:11,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=484, Unknown=0, NotChecked=0, Total=650 [2024-11-13 23:42:11,438 INFO L87 Difference]: Start difference. First operand 521 states and 712 transitions. Second operand has 18 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 11 states have internal predecessors, (25), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 23:42:12,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:42:12,778 INFO L93 Difference]: Finished difference Result 564 states and 759 transitions. [2024-11-13 23:42:12,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-13 23:42:12,781 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 11 states have internal predecessors, (25), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 40 [2024-11-13 23:42:12,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:42:12,782 INFO L225 Difference]: With dead ends: 564 [2024-11-13 23:42:12,782 INFO L226 Difference]: Without dead ends: 558 [2024-11-13 23:42:12,782 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 59 SyntacticMatches, 13 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 371 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=205, Invalid=551, Unknown=0, NotChecked=0, Total=756 [2024-11-13 23:42:12,783 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 471 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 473 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-13 23:42:12,784 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [473 Valid, 204 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-13 23:42:12,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2024-11-13 23:42:12,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 541. [2024-11-13 23:42:12,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 483 states have (on average 1.445134575569358) internal successors, (698), 519 states have internal predecessors, (698), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-13 23:42:12,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 736 transitions. [2024-11-13 23:42:12,824 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 736 transitions. Word has length 40 [2024-11-13 23:42:12,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:42:12,824 INFO L471 AbstractCegarLoop]: Abstraction has 541 states and 736 transitions. [2024-11-13 23:42:12,824 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 11 states have internal predecessors, (25), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 23:42:12,824 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 736 transitions. [2024-11-13 23:42:12,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-13 23:42:12,825 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:42:12,825 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:42:12,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-13 23:42:13,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:42:13,026 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2024-11-13 23:42:13,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:42:13,026 INFO L85 PathProgramCache]: Analyzing trace with hash 240899100, now seen corresponding path program 1 times [2024-11-13 23:42:13,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:42:13,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118092564] [2024-11-13 23:42:13,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:42:13,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:42:13,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 23:42:13,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1071554720] [2024-11-13 23:42:13,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:42:13,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:42:13,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:42:13,041 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:42:13,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-13 23:42:13,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:42:13,090 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-13 23:42:13,091 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:42:13,605 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 23:42:13,605 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:42:14,475 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:42:14,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118092564] [2024-11-13 23:42:14,476 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 23:42:14,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071554720] [2024-11-13 23:42:14,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1071554720] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:42:14,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [50205086] [2024-11-13 23:42:14,477 INFO L159 IcfgInterpreter]: Started Sifa with 30 locations of interest [2024-11-13 23:42:14,477 INFO L166 IcfgInterpreter]: Building call graph [2024-11-13 23:42:14,478 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-13 23:42:14,478 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-13 23:42:14,478 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-13 23:42:15,939 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 41 for LOIs [2024-11-13 23:42:15,946 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2024-11-13 23:42:15,947 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-13 23:42:18,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [50205086] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:42:18,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 23:42:18,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [9] total 24 [2024-11-13 23:42:18,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257267137] [2024-11-13 23:42:18,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:42:18,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-13 23:42:18,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:42:18,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-13 23:42:18,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=669, Unknown=0, NotChecked=0, Total=870 [2024-11-13 23:42:18,868 INFO L87 Difference]: Start difference. First operand 541 states and 736 transitions. Second operand has 17 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 23:42:19,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:42:19,740 INFO L93 Difference]: Finished difference Result 551 states and 744 transitions. [2024-11-13 23:42:19,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-13 23:42:19,740 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 40 [2024-11-13 23:42:19,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:42:19,742 INFO L225 Difference]: With dead ends: 551 [2024-11-13 23:42:19,742 INFO L226 Difference]: Without dead ends: 549 [2024-11-13 23:42:19,742 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 69 SyntacticMatches, 15 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 555 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=242, Invalid=750, Unknown=0, NotChecked=0, Total=992 [2024-11-13 23:42:19,742 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 352 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 23:42:19,743 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [354 Valid, 173 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 23:42:19,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2024-11-13 23:42:19,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 535. [2024-11-13 23:42:19,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 535 states, 477 states have (on average 1.4465408805031446) internal successors, (690), 513 states have internal predecessors, (690), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-13 23:42:19,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 728 transitions. [2024-11-13 23:42:19,779 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 728 transitions. Word has length 40 [2024-11-13 23:42:19,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:42:19,780 INFO L471 AbstractCegarLoop]: Abstraction has 535 states and 728 transitions. [2024-11-13 23:42:19,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 23:42:19,780 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 728 transitions. [2024-11-13 23:42:19,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-13 23:42:19,781 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:42:19,781 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:42:19,801 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-13 23:42:19,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:42:19,981 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2024-11-13 23:42:19,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:42:19,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1303238981, now seen corresponding path program 1 times [2024-11-13 23:42:19,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:42:19,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429125972] [2024-11-13 23:42:19,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:42:19,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:42:20,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 23:42:20,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1955715337] [2024-11-13 23:42:20,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:42:20,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:42:20,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:42:20,011 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:42:20,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-13 23:42:20,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:42:20,065 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-13 23:42:20,066 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:42:20,290 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 23:42:20,290 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:42:20,623 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 23:42:20,623 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:42:20,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429125972] [2024-11-13 23:42:20,623 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 23:42:20,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955715337] [2024-11-13 23:42:20,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955715337] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 23:42:20,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [486391253] [2024-11-13 23:42:20,625 INFO L159 IcfgInterpreter]: Started Sifa with 37 locations of interest [2024-11-13 23:42:20,625 INFO L166 IcfgInterpreter]: Building call graph [2024-11-13 23:42:20,627 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-13 23:42:20,627 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-13 23:42:20,627 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-13 23:42:22,410 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 90 for LOIs [2024-11-13 23:42:22,471 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2024-11-13 23:42:22,473 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-13 23:42:26,728 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '26748#(exists ((|v_ULTIMATE.start_main_~b~0#1_117| Int) (|v_ULTIMATE.start_main_~a~0#1_119| Int)) (and (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~p~0#1| 1) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~q~0#1|)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~q~0#1| 9223372036854775807) (<= |v_ULTIMATE.start_main_~b~0#1_117| 19) (<= |v_ULTIMATE.start_main_~a~0#1_119| 19) (<= |ULTIMATE.start_main_~y~0#1| 20) (<= |ULTIMATE.start_main_~x~0#1| 20) (<= 0 (+ |v_ULTIMATE.start_main_~a~0#1_119| 9223372036854775808 |v_ULTIMATE.start_main_~b~0#1_117|)) (<= (+ 9223372036854775809 (* |v_ULTIMATE.start_main_~a~0#1_119| |v_ULTIMATE.start_main_~b~0#1_117|)) 0)))' at error location [2024-11-13 23:42:26,728 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-13 23:42:26,728 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 23:42:26,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 12 [2024-11-13 23:42:26,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84065076] [2024-11-13 23:42:26,729 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 23:42:26,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-13 23:42:26,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:42:26,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-13 23:42:26,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=1170, Unknown=0, NotChecked=0, Total=1406 [2024-11-13 23:42:26,731 INFO L87 Difference]: Start difference. First operand 535 states and 728 transitions. Second operand has 13 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2024-11-13 23:42:27,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:42:27,584 INFO L93 Difference]: Finished difference Result 666 states and 934 transitions. [2024-11-13 23:42:27,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 23:42:27,585 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) Word has length 42 [2024-11-13 23:42:27,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:42:27,587 INFO L225 Difference]: With dead ends: 666 [2024-11-13 23:42:27,587 INFO L226 Difference]: Without dead ends: 657 [2024-11-13 23:42:27,587 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 78 SyntacticMatches, 10 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 879 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=282, Invalid=1440, Unknown=0, NotChecked=0, Total=1722 [2024-11-13 23:42:27,587 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 373 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-13 23:42:27,588 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [373 Valid, 67 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-13 23:42:27,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2024-11-13 23:42:27,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 514. [2024-11-13 23:42:27,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 514 states, 465 states have (on average 1.3806451612903226) internal successors, (642), 492 states have internal predecessors, (642), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-13 23:42:27,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 680 transitions. [2024-11-13 23:42:27,632 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 680 transitions. Word has length 42 [2024-11-13 23:42:27,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:42:27,632 INFO L471 AbstractCegarLoop]: Abstraction has 514 states and 680 transitions. [2024-11-13 23:42:27,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2024-11-13 23:42:27,632 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 680 transitions. [2024-11-13 23:42:27,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-13 23:42:27,633 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:42:27,633 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:42:27,654 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-13 23:42:27,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-13 23:42:27,834 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2024-11-13 23:42:27,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:42:27,834 INFO L85 PathProgramCache]: Analyzing trace with hash 1745702796, now seen corresponding path program 1 times [2024-11-13 23:42:27,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:42:27,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18211578] [2024-11-13 23:42:27,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:42:27,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:42:27,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 23:42:27,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1581349960] [2024-11-13 23:42:27,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:42:27,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:42:27,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:42:27,854 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:42:27,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-13 23:42:27,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:42:27,910 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-13 23:42:27,911 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:42:28,644 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 23:42:28,644 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:42:32,416 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 23:42:32,416 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:42:32,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18211578] [2024-11-13 23:42:32,416 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 23:42:32,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581349960] [2024-11-13 23:42:32,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581349960] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 23:42:32,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1814007850] [2024-11-13 23:42:32,418 INFO L159 IcfgInterpreter]: Started Sifa with 37 locations of interest [2024-11-13 23:42:32,418 INFO L166 IcfgInterpreter]: Building call graph [2024-11-13 23:42:32,418 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-13 23:42:32,418 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-13 23:42:32,418 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-13 23:42:33,831 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 90 for LOIs [2024-11-13 23:42:33,888 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2024-11-13 23:42:33,889 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-13 23:42:39,236 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '28332#(and (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~p~0#1| 1) (<= 0 (+ 9223372036854775808 |ULTIMATE.start_main_~q~0#1|)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (exists ((|v_ULTIMATE.start_main_~a~0#1_128| Int) (|v_ULTIMATE.start_main_~b~0#1_125| Int)) (and (<= |v_ULTIMATE.start_main_~a~0#1_128| 20) (<= |v_ULTIMATE.start_main_~b~0#1_125| 20) (<= 0 (+ 9223372036854775827 |v_ULTIMATE.start_main_~b~0#1_125|)) (<= 9223372036854775808 (* |v_ULTIMATE.start_main_~a~0#1_128| |v_ULTIMATE.start_main_~b~0#1_125|)) (<= 0 (+ |v_ULTIMATE.start_main_~a~0#1_128| 9223372036854775827)))) (<= |ULTIMATE.start_main_~q~0#1| 9223372036854775807) (<= |ULTIMATE.start_main_~y~0#1| 20) (<= |ULTIMATE.start_main_~x~0#1| 20))' at error location [2024-11-13 23:42:39,236 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-13 23:42:39,236 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 23:42:39,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2024-11-13 23:42:39,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409678500] [2024-11-13 23:42:39,237 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 23:42:39,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-13 23:42:39,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:42:39,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-13 23:42:39,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=1344, Unknown=0, NotChecked=0, Total=1560 [2024-11-13 23:42:39,238 INFO L87 Difference]: Start difference. First operand 514 states and 680 transitions. Second operand has 15 states, 12 states have (on average 5.25) internal successors, (63), 12 states have internal predecessors, (63), 4 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-13 23:42:52,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:42:52,474 INFO L93 Difference]: Finished difference Result 999 states and 1349 transitions. [2024-11-13 23:42:52,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-13 23:42:52,475 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 5.25) internal successors, (63), 12 states have internal predecessors, (63), 4 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) Word has length 43 [2024-11-13 23:42:52,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:42:52,477 INFO L225 Difference]: With dead ends: 999 [2024-11-13 23:42:52,477 INFO L226 Difference]: Without dead ends: 968 [2024-11-13 23:42:52,478 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 80 SyntacticMatches, 9 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1134 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=427, Invalid=2543, Unknown=0, NotChecked=0, Total=2970 [2024-11-13 23:42:52,479 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 924 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 917 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 924 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 1021 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2024-11-13 23:42:52,479 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [924 Valid, 107 Invalid, 1021 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 917 Invalid, 0 Unknown, 0 Unchecked, 9.9s Time] [2024-11-13 23:42:52,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2024-11-13 23:42:52,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 761. [2024-11-13 23:42:52,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 761 states, 707 states have (on average 1.3352192362093351) internal successors, (944), 733 states have internal predecessors, (944), 25 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-13 23:42:52,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 761 states to 761 states and 994 transitions. [2024-11-13 23:42:52,557 INFO L78 Accepts]: Start accepts. Automaton has 761 states and 994 transitions. Word has length 43 [2024-11-13 23:42:52,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:42:52,557 INFO L471 AbstractCegarLoop]: Abstraction has 761 states and 994 transitions. [2024-11-13 23:42:52,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 5.25) internal successors, (63), 12 states have internal predecessors, (63), 4 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-13 23:42:52,557 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states and 994 transitions. [2024-11-13 23:42:52,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-13 23:42:52,558 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:42:52,558 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:42:52,578 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-13 23:42:52,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-13 23:42:52,759 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2024-11-13 23:42:52,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:42:52,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1717788121, now seen corresponding path program 1 times [2024-11-13 23:42:52,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:42:52,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553164067] [2024-11-13 23:42:52,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:42:52,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:42:52,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 23:42:52,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [916349519] [2024-11-13 23:42:52,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:42:52,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:42:52,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:42:52,780 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:42:52,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-13 23:42:52,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:42:52,836 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-13 23:42:52,838 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:42:53,166 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 23:42:53,166 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:42:54,016 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:42:54,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553164067] [2024-11-13 23:42:54,016 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 23:42:54,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916349519] [2024-11-13 23:42:54,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916349519] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:42:54,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1879137011] [2024-11-13 23:42:54,018 INFO L159 IcfgInterpreter]: Started Sifa with 37 locations of interest [2024-11-13 23:42:54,018 INFO L166 IcfgInterpreter]: Building call graph [2024-11-13 23:42:54,019 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-13 23:42:54,019 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-13 23:42:54,019 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-13 23:42:55,041 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 90 for LOIs [2024-11-13 23:42:55,072 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2024-11-13 23:42:55,074 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-13 23:42:59,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1879137011] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:42:59,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 23:42:59,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [7] total 31 [2024-11-13 23:42:59,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537746108] [2024-11-13 23:42:59,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:42:59,210 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-13 23:42:59,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:42:59,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-13 23:42:59,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=1083, Unknown=0, NotChecked=0, Total=1260 [2024-11-13 23:42:59,211 INFO L87 Difference]: Start difference. First operand 761 states and 994 transitions. Second operand has 26 states, 20 states have (on average 1.55) internal successors, (31), 20 states have internal predecessors, (31), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 23:43:08,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:43:08,729 INFO L93 Difference]: Finished difference Result 884 states and 1158 transitions. [2024-11-13 23:43:08,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-13 23:43:08,729 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 20 states have (on average 1.55) internal successors, (31), 20 states have internal predecessors, (31), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 44 [2024-11-13 23:43:08,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:43:08,731 INFO L225 Difference]: With dead ends: 884 [2024-11-13 23:43:08,731 INFO L226 Difference]: Without dead ends: 881 [2024-11-13 23:43:08,732 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 63 SyntacticMatches, 11 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1265 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=928, Invalid=3628, Unknown=0, NotChecked=0, Total=4556 [2024-11-13 23:43:08,733 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 451 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 1432 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 1488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-13 23:43:08,733 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [452 Valid, 91 Invalid, 1488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1432 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-13 23:43:08,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2024-11-13 23:43:08,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 809. [2024-11-13 23:43:08,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 809 states, 754 states have (on average 1.33289124668435) internal successors, (1005), 780 states have internal predecessors, (1005), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-13 23:43:08,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 809 states to 809 states and 1057 transitions. [2024-11-13 23:43:08,784 INFO L78 Accepts]: Start accepts. Automaton has 809 states and 1057 transitions. Word has length 44 [2024-11-13 23:43:08,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:43:08,784 INFO L471 AbstractCegarLoop]: Abstraction has 809 states and 1057 transitions. [2024-11-13 23:43:08,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 20 states have (on average 1.55) internal successors, (31), 20 states have internal predecessors, (31), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 23:43:08,784 INFO L276 IsEmpty]: Start isEmpty. Operand 809 states and 1057 transitions. [2024-11-13 23:43:08,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-13 23:43:08,785 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:43:08,785 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:43:08,806 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-13 23:43:08,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:43:08,986 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2024-11-13 23:43:08,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:43:08,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1526940919, now seen corresponding path program 1 times [2024-11-13 23:43:08,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:43:08,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102041232] [2024-11-13 23:43:08,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:43:08,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:43:09,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 23:43:09,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [392634079] [2024-11-13 23:43:09,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:43:09,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:43:09,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:43:09,005 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:43:09,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-13 23:43:09,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:43:09,055 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-13 23:43:09,056 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:43:09,403 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 23:43:09,403 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:43:11,280 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:43:11,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102041232] [2024-11-13 23:43:11,281 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 23:43:11,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [392634079] [2024-11-13 23:43:11,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [392634079] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:43:11,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [792220089] [2024-11-13 23:43:11,282 INFO L159 IcfgInterpreter]: Started Sifa with 37 locations of interest [2024-11-13 23:43:11,282 INFO L166 IcfgInterpreter]: Building call graph [2024-11-13 23:43:11,282 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-13 23:43:11,282 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-13 23:43:11,283 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-13 23:43:12,287 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 90 for LOIs [2024-11-13 23:43:12,319 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2024-11-13 23:43:12,320 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-13 23:43:16,728 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '32609#(and (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (exists ((|v_ULTIMATE.start_main_~a~0#1_144| Int) (|v_ULTIMATE.start_main_~b~0#1_139| Int)) (and (<= |v_ULTIMATE.start_main_~b~0#1_139| 20) (<= |v_ULTIMATE.start_main_~a~0#1_144| 20) (<= 0 (+ 9223372036854775827 |v_ULTIMATE.start_main_~b~0#1_139|)) (<= (+ (* |v_ULTIMATE.start_main_~a~0#1_144| |v_ULTIMATE.start_main_~b~0#1_139|) 1) 0) (<= 0 (+ |v_ULTIMATE.start_main_~a~0#1_144| 9223372036854775827)))) (<= |ULTIMATE.start_main_~y~0#1| 20) (<= |ULTIMATE.start_main_~x~0#1| 20))' at error location [2024-11-13 23:43:16,728 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-13 23:43:16,728 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-13 23:43:16,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2024-11-13 23:43:16,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304313265] [2024-11-13 23:43:16,729 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-13 23:43:16,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 23:43:16,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:43:16,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 23:43:16,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=1335, Unknown=0, NotChecked=0, Total=1560 [2024-11-13 23:43:16,730 INFO L87 Difference]: Start difference. First operand 809 states and 1057 transitions. Second operand has 9 states, 7 states have (on average 5.285714285714286) internal successors, (37), 8 states have internal predecessors, (37), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-13 23:43:17,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:43:17,639 INFO L93 Difference]: Finished difference Result 897 states and 1166 transitions. [2024-11-13 23:43:17,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 23:43:17,640 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 5.285714285714286) internal successors, (37), 8 states have internal predecessors, (37), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 46 [2024-11-13 23:43:17,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:43:17,643 INFO L225 Difference]: With dead ends: 897 [2024-11-13 23:43:17,643 INFO L226 Difference]: Without dead ends: 889 [2024-11-13 23:43:17,644 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 66 SyntacticMatches, 10 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 971 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=312, Invalid=1758, Unknown=0, NotChecked=0, Total=2070 [2024-11-13 23:43:17,645 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 180 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 641 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-13 23:43:17,645 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 117 Invalid, 673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 641 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-13 23:43:17,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2024-11-13 23:43:17,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 778. [2024-11-13 23:43:17,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 778 states, 724 states have (on average 1.2831491712707181) internal successors, (929), 750 states have internal predecessors, (929), 25 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-13 23:43:17,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 778 states to 778 states and 979 transitions. [2024-11-13 23:43:17,697 INFO L78 Accepts]: Start accepts. Automaton has 778 states and 979 transitions. Word has length 46 [2024-11-13 23:43:17,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:43:17,697 INFO L471 AbstractCegarLoop]: Abstraction has 778 states and 979 transitions. [2024-11-13 23:43:17,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 5.285714285714286) internal successors, (37), 8 states have internal predecessors, (37), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-13 23:43:17,698 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states and 979 transitions. [2024-11-13 23:43:17,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-13 23:43:17,698 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:43:17,698 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:43:17,715 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-13 23:43:17,899 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:43:17,899 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2024-11-13 23:43:17,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:43:17,900 INFO L85 PathProgramCache]: Analyzing trace with hash -90528176, now seen corresponding path program 1 times [2024-11-13 23:43:17,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:43:17,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701544882] [2024-11-13 23:43:17,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:43:17,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:43:17,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 23:43:17,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [560591954] [2024-11-13 23:43:17,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:43:17,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:43:17,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:43:17,928 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:43:17,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-13 23:43:17,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:43:17,971 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-13 23:43:17,972 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:43:18,457 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 23:43:18,458 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:43:18,958 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:43:18,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701544882] [2024-11-13 23:43:18,958 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 23:43:18,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560591954] [2024-11-13 23:43:18,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [560591954] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:43:18,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1464484538] [2024-11-13 23:43:18,960 INFO L159 IcfgInterpreter]: Started Sifa with 37 locations of interest [2024-11-13 23:43:18,960 INFO L166 IcfgInterpreter]: Building call graph [2024-11-13 23:43:18,960 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-13 23:43:18,960 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-13 23:43:18,960 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-13 23:43:20,176 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 90 for LOIs [2024-11-13 23:43:20,207 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2024-11-13 23:43:20,208 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-13 23:43:24,703 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '34720#(and (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (exists ((|v_ULTIMATE.start_main_~a~0#1_154| Int) (|v_ULTIMATE.start_main_~b~0#1_147| Int)) (and (<= |v_ULTIMATE.start_main_~b~0#1_147| 20) (<= 1 (* |v_ULTIMATE.start_main_~a~0#1_154| |v_ULTIMATE.start_main_~b~0#1_147|)) (<= 0 (+ 9223372036854775827 |v_ULTIMATE.start_main_~b~0#1_147|)) (<= |v_ULTIMATE.start_main_~a~0#1_154| 20) (<= 0 (+ |v_ULTIMATE.start_main_~a~0#1_154| 9223372036854775827)))) (<= |ULTIMATE.start_main_~y~0#1| 20) (<= |ULTIMATE.start_main_~x~0#1| 20))' at error location [2024-11-13 23:43:24,703 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-13 23:43:24,703 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-13 23:43:24,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2024-11-13 23:43:24,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123884337] [2024-11-13 23:43:24,704 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-13 23:43:24,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 23:43:24,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:43:24,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 23:43:24,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=243, Invalid=1239, Unknown=0, NotChecked=0, Total=1482 [2024-11-13 23:43:24,705 INFO L87 Difference]: Start difference. First operand 778 states and 979 transitions. Second operand has 9 states, 7 states have (on average 5.428571428571429) internal successors, (38), 8 states have internal predecessors, (38), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 23:43:25,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:43:25,539 INFO L93 Difference]: Finished difference Result 807 states and 1012 transitions. [2024-11-13 23:43:25,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 23:43:25,539 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 5.428571428571429) internal successors, (38), 8 states have internal predecessors, (38), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 47 [2024-11-13 23:43:25,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:43:25,542 INFO L225 Difference]: With dead ends: 807 [2024-11-13 23:43:25,542 INFO L226 Difference]: Without dead ends: 806 [2024-11-13 23:43:25,542 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 85 SyntacticMatches, 11 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 784 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=312, Invalid=1668, Unknown=0, NotChecked=0, Total=1980 [2024-11-13 23:43:25,543 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 145 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 23:43:25,543 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 121 Invalid, 555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 23:43:25,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2024-11-13 23:43:25,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 785. [2024-11-13 23:43:25,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 785 states, 731 states have (on average 1.280437756497948) internal successors, (936), 757 states have internal predecessors, (936), 25 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-13 23:43:25,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 785 states to 785 states and 986 transitions. [2024-11-13 23:43:25,591 INFO L78 Accepts]: Start accepts. Automaton has 785 states and 986 transitions. Word has length 47 [2024-11-13 23:43:25,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:43:25,591 INFO L471 AbstractCegarLoop]: Abstraction has 785 states and 986 transitions. [2024-11-13 23:43:25,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 5.428571428571429) internal successors, (38), 8 states have internal predecessors, (38), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 23:43:25,592 INFO L276 IsEmpty]: Start isEmpty. Operand 785 states and 986 transitions. [2024-11-13 23:43:25,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-13 23:43:25,592 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:43:25,592 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:43:25,607 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-13 23:43:25,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-11-13 23:43:25,793 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2024-11-13 23:43:25,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:43:25,793 INFO L85 PathProgramCache]: Analyzing trace with hash 791815314, now seen corresponding path program 1 times [2024-11-13 23:43:25,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:43:25,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932425338] [2024-11-13 23:43:25,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:43:25,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:43:25,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 23:43:25,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [766600061] [2024-11-13 23:43:25,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:43:25,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:43:25,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:43:25,821 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:43:25,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-13 23:43:25,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:43:25,880 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-13 23:43:25,882 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:43:34,407 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 23:43:34,407 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:43:35,890 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 23:43:35,890 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:43:35,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932425338] [2024-11-13 23:43:35,890 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 23:43:35,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766600061] [2024-11-13 23:43:35,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [766600061] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-13 23:43:35,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 23:43:35,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [14] total 17 [2024-11-13 23:43:35,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398406884] [2024-11-13 23:43:35,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:43:35,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 23:43:35,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:43:35,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 23:43:35,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2024-11-13 23:43:35,892 INFO L87 Difference]: Start difference. First operand 785 states and 986 transitions. Second operand has 6 states, 4 states have (on average 8.75) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 23:43:38,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:43:38,994 INFO L93 Difference]: Finished difference Result 995 states and 1260 transitions. [2024-11-13 23:43:38,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 23:43:38,995 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 8.75) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 51 [2024-11-13 23:43:38,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:43:38,997 INFO L225 Difference]: With dead ends: 995 [2024-11-13 23:43:38,997 INFO L226 Difference]: Without dead ends: 994 [2024-11-13 23:43:38,997 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2024-11-13 23:43:38,998 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 47 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-13 23:43:38,998 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 147 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-13 23:43:38,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 994 states. [2024-11-13 23:43:39,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 994 to 784. [2024-11-13 23:43:39,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 784 states, 731 states have (on average 1.2694938440492476) internal successors, (928), 756 states have internal predecessors, (928), 25 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-13 23:43:39,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 978 transitions. [2024-11-13 23:43:39,061 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 978 transitions. Word has length 51 [2024-11-13 23:43:39,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:43:39,061 INFO L471 AbstractCegarLoop]: Abstraction has 784 states and 978 transitions. [2024-11-13 23:43:39,061 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 8.75) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 23:43:39,061 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 978 transitions. [2024-11-13 23:43:39,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-13 23:43:39,062 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:43:39,062 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:43:39,101 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-13 23:43:39,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:43:39,262 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2024-11-13 23:43:39,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:43:39,263 INFO L85 PathProgramCache]: Analyzing trace with hash -808406256, now seen corresponding path program 1 times [2024-11-13 23:43:39,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:43:39,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620612016] [2024-11-13 23:43:39,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:43:39,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:43:39,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 23:43:39,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [889208248] [2024-11-13 23:43:39,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:43:39,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:43:39,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:43:39,284 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:43:39,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-13 23:43:39,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:43:39,344 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-13 23:43:39,345 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:43:47,933 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 23:43:47,934 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:43:49,566 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 23:43:49,566 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:43:49,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620612016] [2024-11-13 23:43:49,566 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 23:43:49,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [889208248] [2024-11-13 23:43:49,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [889208248] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-13 23:43:49,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 23:43:49,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [15] total 18 [2024-11-13 23:43:49,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795074544] [2024-11-13 23:43:49,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:43:49,567 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 23:43:49,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:43:49,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 23:43:49,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2024-11-13 23:43:49,567 INFO L87 Difference]: Start difference. First operand 784 states and 978 transitions. Second operand has 6 states, 4 states have (on average 9.0) internal successors, (36), 6 states have internal predecessors, (36), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 23:43:52,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:43:52,560 INFO L93 Difference]: Finished difference Result 969 states and 1225 transitions. [2024-11-13 23:43:52,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 23:43:52,560 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 9.0) internal successors, (36), 6 states have internal predecessors, (36), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 52 [2024-11-13 23:43:52,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:43:52,562 INFO L225 Difference]: With dead ends: 969 [2024-11-13 23:43:52,562 INFO L226 Difference]: Without dead ends: 968 [2024-11-13 23:43:52,562 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2024-11-13 23:43:52,563 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 48 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-13 23:43:52,563 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 133 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-13 23:43:52,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2024-11-13 23:43:52,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 783. [2024-11-13 23:43:52,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 783 states, 731 states have (on average 1.2626538987688098) internal successors, (923), 755 states have internal predecessors, (923), 25 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-13 23:43:52,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 783 states to 783 states and 973 transitions. [2024-11-13 23:43:52,610 INFO L78 Accepts]: Start accepts. Automaton has 783 states and 973 transitions. Word has length 52 [2024-11-13 23:43:52,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:43:52,610 INFO L471 AbstractCegarLoop]: Abstraction has 783 states and 973 transitions. [2024-11-13 23:43:52,610 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 9.0) internal successors, (36), 6 states have internal predecessors, (36), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 23:43:52,610 INFO L276 IsEmpty]: Start isEmpty. Operand 783 states and 973 transitions. [2024-11-13 23:43:52,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-13 23:43:52,610 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:43:52,611 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:43:52,626 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-13 23:43:52,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:43:52,811 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2024-11-13 23:43:52,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:43:52,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1207430431, now seen corresponding path program 1 times [2024-11-13 23:43:52,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:43:52,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919180048] [2024-11-13 23:43:52,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:43:52,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:43:52,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:43:52,897 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-13 23:43:52,897 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:43:52,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919180048] [2024-11-13 23:43:52,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919180048] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:43:52,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637174536] [2024-11-13 23:43:52,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:43:52,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:43:52,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:43:52,901 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:43:52,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-13 23:43:52,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:43:52,957 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 23:43:52,958 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:43:53,027 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-13 23:43:53,027 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:43:53,128 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-13 23:43:53,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637174536] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 23:43:53,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [178527941] [2024-11-13 23:43:53,130 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2024-11-13 23:43:53,130 INFO L166 IcfgInterpreter]: Building call graph [2024-11-13 23:43:53,130 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-13 23:43:53,130 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-13 23:43:53,130 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-13 23:43:54,372 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 32 for LOIs [2024-11-13 23:43:54,378 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2024-11-13 23:43:54,379 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-13 23:44:09,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [178527941] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:44:09,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-13 23:44:09,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [3, 3, 3] total 27 [2024-11-13 23:44:09,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017115020] [2024-11-13 23:44:09,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:44:09,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-13 23:44:09,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:44:09,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-13 23:44:09,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=610, Unknown=2, NotChecked=0, Total=756 [2024-11-13 23:44:09,071 INFO L87 Difference]: Start difference. First operand 783 states and 973 transitions. Second operand has 23 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 16 states have internal predecessors, (23), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 23:44:13,148 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-13 23:44:15,269 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-13 23:44:17,545 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-13 23:44:19,841 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-13 23:44:34,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:44:34,234 INFO L93 Difference]: Finished difference Result 793 states and 980 transitions. [2024-11-13 23:44:34,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-13 23:44:34,234 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 16 states have internal predecessors, (23), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 52 [2024-11-13 23:44:34,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:44:34,238 INFO L225 Difference]: With dead ends: 793 [2024-11-13 23:44:34,238 INFO L226 Difference]: Without dead ends: 791 [2024-11-13 23:44:34,239 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 122 SyntacticMatches, 9 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 514 ImplicationChecksByTransitivity, 25.6s TimeCoverageRelationStatistics Valid=295, Invalid=1034, Unknown=3, NotChecked=0, Total=1332 [2024-11-13 23:44:34,239 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 419 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 18 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.1s IncrementalHoareTripleChecker+Time [2024-11-13 23:44:34,239 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [420 Valid, 204 Invalid, 649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 628 Invalid, 3 Unknown, 0 Unchecked, 14.1s Time] [2024-11-13 23:44:34,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 791 states. [2024-11-13 23:44:34,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 791 to 772. [2024-11-13 23:44:34,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 772 states, 720 states have (on average 1.2638888888888888) internal successors, (910), 744 states have internal predecessors, (910), 25 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-13 23:44:34,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772 states to 772 states and 960 transitions. [2024-11-13 23:44:34,299 INFO L78 Accepts]: Start accepts. Automaton has 772 states and 960 transitions. Word has length 52 [2024-11-13 23:44:34,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:44:34,299 INFO L471 AbstractCegarLoop]: Abstraction has 772 states and 960 transitions. [2024-11-13 23:44:34,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 16 states have internal predecessors, (23), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 23:44:34,299 INFO L276 IsEmpty]: Start isEmpty. Operand 772 states and 960 transitions. [2024-11-13 23:44:34,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-13 23:44:34,300 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:44:34,300 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:44:34,313 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-13 23:44:34,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:44:34,500 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2024-11-13 23:44:34,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:44:34,501 INFO L85 PathProgramCache]: Analyzing trace with hash 245377316, now seen corresponding path program 1 times [2024-11-13 23:44:34,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:44:34,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850057519] [2024-11-13 23:44:34,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:44:34,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:44:34,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 23:44:34,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1375803570] [2024-11-13 23:44:34,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:44:34,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:44:34,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:44:34,554 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:44:34,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-13 23:44:34,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:44:34,639 INFO L255 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-13 23:44:34,641 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:44:35,250 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-13 23:44:35,251 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:44:48,900 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-13 23:44:48,901 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:44:48,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850057519] [2024-11-13 23:44:48,901 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 23:44:48,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1375803570] [2024-11-13 23:44:48,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1375803570] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 23:44:48,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1925946112] [2024-11-13 23:44:48,903 INFO L159 IcfgInterpreter]: Started Sifa with 41 locations of interest [2024-11-13 23:44:48,905 INFO L166 IcfgInterpreter]: Building call graph [2024-11-13 23:44:48,906 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-13 23:44:48,906 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-13 23:44:48,906 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-13 23:44:50,511 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 32 for LOIs [2024-11-13 23:44:50,515 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2024-11-13 23:44:50,516 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-13 23:45:21,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1925946112] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 23:45:21,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-13 23:45:21,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [12, 12] total 52 [2024-11-13 23:45:21,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523218588] [2024-11-13 23:45:21,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 23:45:21,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-13 23:45:21,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:45:21,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-13 23:45:21,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=547, Invalid=2203, Unknown=6, NotChecked=0, Total=2756 [2024-11-13 23:45:21,565 INFO L87 Difference]: Start difference. First operand 772 states and 960 transitions. Second operand has 32 states, 26 states have (on average 1.3461538461538463) internal successors, (35), 25 states have internal predecessors, (35), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 23:45:26,692 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-13 23:45:28,729 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-13 23:45:29,924 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-13 23:45:30,929 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-13 23:45:33,072 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-13 23:45:35,514 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-13 23:45:38,698 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-13 23:45:43,299 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-13 23:45:44,343 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-13 23:45:47,352 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-13 23:45:56,484 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-13 23:45:58,775 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-13 23:46:07,519 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-13 23:46:12,228 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-13 23:46:22,994 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-13 23:46:29,922 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-13 23:46:40,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:46:40,505 INFO L93 Difference]: Finished difference Result 782 states and 969 transitions. [2024-11-13 23:46:40,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-13 23:46:40,506 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 26 states have (on average 1.3461538461538463) internal successors, (35), 25 states have internal predecessors, (35), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 58 [2024-11-13 23:46:40,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:46:40,509 INFO L225 Difference]: With dead ends: 782 [2024-11-13 23:46:40,509 INFO L226 Difference]: Without dead ends: 781 [2024-11-13 23:46:40,510 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 111 SyntacticMatches, 10 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1829 ImplicationChecksByTransitivity, 75.7s TimeCoverageRelationStatistics Valid=1221, Invalid=4319, Unknown=10, NotChecked=0, Total=5550 [2024-11-13 23:46:40,510 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 425 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 1477 mSolverCounterSat, 20 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 1504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1477 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 44.2s IncrementalHoareTripleChecker+Time [2024-11-13 23:46:40,510 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [426 Valid, 161 Invalid, 1504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1477 Invalid, 7 Unknown, 0 Unchecked, 44.2s Time] [2024-11-13 23:46:40,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2024-11-13 23:46:40,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 772. [2024-11-13 23:46:40,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 772 states, 720 states have (on average 1.2625) internal successors, (909), 744 states have internal predecessors, (909), 25 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-13 23:46:40,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772 states to 772 states and 959 transitions. [2024-11-13 23:46:40,573 INFO L78 Accepts]: Start accepts. Automaton has 772 states and 959 transitions. Word has length 58 [2024-11-13 23:46:40,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:46:40,573 INFO L471 AbstractCegarLoop]: Abstraction has 772 states and 959 transitions. [2024-11-13 23:46:40,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 26 states have (on average 1.3461538461538463) internal successors, (35), 25 states have internal predecessors, (35), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 23:46:40,573 INFO L276 IsEmpty]: Start isEmpty. Operand 772 states and 959 transitions. [2024-11-13 23:46:40,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-13 23:46:40,574 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:46:40,574 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:46:40,591 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-13 23:46:40,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:46:40,775 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2024-11-13 23:46:40,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:46:40,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1409640893, now seen corresponding path program 1 times [2024-11-13 23:46:40,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:46:40,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284649931] [2024-11-13 23:46:40,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:46:40,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:46:40,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 23:46:40,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [635287363] [2024-11-13 23:46:40,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:46:40,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:46:40,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:46:40,797 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:46:40,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-13 23:46:40,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:46:40,863 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-13 23:46:40,865 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:46:45,641 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 23:46:45,641 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:46:48,071 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:46:48,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284649931] [2024-11-13 23:46:48,072 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 23:46:48,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635287363] [2024-11-13 23:46:48,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [635287363] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:46:48,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [882452178] [2024-11-13 23:46:48,073 INFO L159 IcfgInterpreter]: Started Sifa with 36 locations of interest [2024-11-13 23:46:48,073 INFO L166 IcfgInterpreter]: Building call graph [2024-11-13 23:46:48,073 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-13 23:46:48,073 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-13 23:46:48,073 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-13 23:46:48,910 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 34 for LOIs [2024-11-13 23:46:48,914 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2024-11-13 23:46:48,915 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-13 23:47:03,038 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '45281#(and (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (exists ((|v_ULTIMATE.start_main_~a~0#1_197| Int) (|v_ULTIMATE.start_main_~b~0#1_184| Int) (|v_ULTIMATE.start_main_~p~0#1_110| Int)) (and (<= 9223372036854775808 (* |v_ULTIMATE.start_main_~a~0#1_197| |v_ULTIMATE.start_main_~b~0#1_184| |v_ULTIMATE.start_main_~p~0#1_110|)) (<= (* |v_ULTIMATE.start_main_~a~0#1_197| |v_ULTIMATE.start_main_~b~0#1_184|) 9223372036854775807) (<= 0 (+ 9223372036854775808 (* |v_ULTIMATE.start_main_~a~0#1_197| |v_ULTIMATE.start_main_~b~0#1_184|))))) (<= |ULTIMATE.start_main_~y~0#1| 20) (<= |ULTIMATE.start_main_~x~0#1| 20))' at error location [2024-11-13 23:47:03,038 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-13 23:47:03,039 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-13 23:47:03,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2024-11-13 23:47:03,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512281724] [2024-11-13 23:47:03,039 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-13 23:47:03,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-13 23:47:03,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:47:03,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-13 23:47:03,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=287, Invalid=2162, Unknown=1, NotChecked=0, Total=2450 [2024-11-13 23:47:03,040 INFO L87 Difference]: Start difference. First operand 772 states and 959 transitions. Second operand has 16 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 14 states have internal predecessors, (46), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-13 23:47:05,743 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-13 23:47:07,816 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-13 23:47:10,070 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-13 23:47:13,544 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-13 23:47:16,476 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-13 23:47:20,022 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-13 23:47:23,945 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-13 23:47:26,479 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-13 23:47:26,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:47:26,971 INFO L93 Difference]: Finished difference Result 834 states and 1032 transitions. [2024-11-13 23:47:26,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-13 23:47:26,972 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 14 states have internal predecessors, (46), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 58 [2024-11-13 23:47:26,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:47:26,974 INFO L225 Difference]: With dead ends: 834 [2024-11-13 23:47:26,974 INFO L226 Difference]: Without dead ends: 833 [2024-11-13 23:47:26,975 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 76 SyntacticMatches, 6 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1064 ImplicationChecksByTransitivity, 23.2s TimeCoverageRelationStatistics Valid=350, Invalid=2729, Unknown=1, NotChecked=0, Total=3080 [2024-11-13 23:47:26,976 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 148 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 1153 mSolverCounterSat, 10 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 1170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1153 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.7s IncrementalHoareTripleChecker+Time [2024-11-13 23:47:26,976 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 216 Invalid, 1170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1153 Invalid, 7 Unknown, 0 Unchecked, 19.7s Time] [2024-11-13 23:47:26,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2024-11-13 23:47:27,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 816. [2024-11-13 23:47:27,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 816 states, 762 states have (on average 1.2585301837270342) internal successors, (959), 786 states have internal predecessors, (959), 27 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-13 23:47:27,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1013 transitions. [2024-11-13 23:47:27,067 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1013 transitions. Word has length 58 [2024-11-13 23:47:27,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:47:27,067 INFO L471 AbstractCegarLoop]: Abstraction has 816 states and 1013 transitions. [2024-11-13 23:47:27,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 14 states have internal predecessors, (46), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-13 23:47:27,068 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1013 transitions. [2024-11-13 23:47:27,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-13 23:47:27,068 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:47:27,068 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:47:27,088 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-13 23:47:27,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-13 23:47:27,272 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2024-11-13 23:47:27,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:47:27,273 INFO L85 PathProgramCache]: Analyzing trace with hash 341877568, now seen corresponding path program 1 times [2024-11-13 23:47:27,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:47:27,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5831106] [2024-11-13 23:47:27,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:47:27,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:47:27,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 23:47:27,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2135460895] [2024-11-13 23:47:27,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:47:27,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:47:27,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:47:27,291 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:47:27,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-13 23:47:27,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:47:27,351 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-13 23:47:27,353 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:47:27,566 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 23:47:27,567 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:47:27,982 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:47:27,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5831106] [2024-11-13 23:47:27,983 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 23:47:27,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135460895] [2024-11-13 23:47:27,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135460895] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:47:27,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [799948970] [2024-11-13 23:47:27,984 INFO L159 IcfgInterpreter]: Started Sifa with 36 locations of interest [2024-11-13 23:47:27,984 INFO L166 IcfgInterpreter]: Building call graph [2024-11-13 23:47:27,984 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-13 23:47:27,984 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-13 23:47:27,984 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-13 23:47:28,896 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 34 for LOIs [2024-11-13 23:47:28,900 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2024-11-13 23:47:28,901 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-13 23:47:46,328 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '47324#(exists ((|v_ULTIMATE.start_main_~b~0#1_190| Int) (|v_ULTIMATE.start_main_~p~0#1_116| Int) (|v_ULTIMATE.start_main_~a~0#1_207| Int) (|v_ULTIMATE.start_main_~q~0#1_103| Int)) (and (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= (* |v_ULTIMATE.start_main_~a~0#1_207| |v_ULTIMATE.start_main_~b~0#1_190| |v_ULTIMATE.start_main_~p~0#1_116|) 9223372036854775807) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= (* |v_ULTIMATE.start_main_~a~0#1_207| |v_ULTIMATE.start_main_~b~0#1_190|) 9223372036854775807) (<= 0 (+ (* |v_ULTIMATE.start_main_~a~0#1_207| |v_ULTIMATE.start_main_~b~0#1_190|) 9223372036854775808)) (<= |ULTIMATE.start_main_~y~0#1| 20) (<= 0 (+ (* |v_ULTIMATE.start_main_~a~0#1_207| |v_ULTIMATE.start_main_~b~0#1_190| |v_ULTIMATE.start_main_~p~0#1_116|) 9223372036854775808)) (<= |ULTIMATE.start_main_~x~0#1| 20) (<= (+ 9223372036854775809 (* |v_ULTIMATE.start_main_~a~0#1_207| |v_ULTIMATE.start_main_~b~0#1_190| |v_ULTIMATE.start_main_~p~0#1_116|) |v_ULTIMATE.start_main_~q~0#1_103|) 0)))' at error location [2024-11-13 23:47:46,328 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-13 23:47:46,328 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-13 23:47:46,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2024-11-13 23:47:46,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655993141] [2024-11-13 23:47:46,328 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-13 23:47:46,329 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 23:47:46,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:47:46,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 23:47:46,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=1255, Unknown=4, NotChecked=0, Total=1482 [2024-11-13 23:47:46,330 INFO L87 Difference]: Start difference. First operand 816 states and 1013 transitions. Second operand has 7 states, 5 states have (on average 8.8) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-13 23:47:47,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:47:47,477 INFO L93 Difference]: Finished difference Result 883 states and 1092 transitions. [2024-11-13 23:47:47,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 23:47:47,477 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 8.8) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 59 [2024-11-13 23:47:47,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:47:47,479 INFO L225 Difference]: With dead ends: 883 [2024-11-13 23:47:47,479 INFO L226 Difference]: Without dead ends: 882 [2024-11-13 23:47:47,480 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 91 SyntacticMatches, 4 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 676 ImplicationChecksByTransitivity, 17.9s TimeCoverageRelationStatistics Valid=261, Invalid=1627, Unknown=4, NotChecked=0, Total=1892 [2024-11-13 23:47:47,481 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 189 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-13 23:47:47,481 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 189 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-13 23:47:47,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 882 states. [2024-11-13 23:47:47,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 882 to 834. [2024-11-13 23:47:47,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 834 states, 779 states have (on average 1.258023106546855) internal successors, (980), 803 states have internal predecessors, (980), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-11-13 23:47:47,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 1036 transitions. [2024-11-13 23:47:47,543 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 1036 transitions. Word has length 59 [2024-11-13 23:47:47,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:47:47,544 INFO L471 AbstractCegarLoop]: Abstraction has 834 states and 1036 transitions. [2024-11-13 23:47:47,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 8.8) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-13 23:47:47,544 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 1036 transitions. [2024-11-13 23:47:47,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-13 23:47:47,544 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:47:47,544 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:47:47,558 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-11-13 23:47:47,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-13 23:47:47,745 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2024-11-13 23:47:47,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:47:47,745 INFO L85 PathProgramCache]: Analyzing trace with hash 229344095, now seen corresponding path program 1 times [2024-11-13 23:47:47,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:47:47,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944018583] [2024-11-13 23:47:47,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:47:47,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:47:47,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 23:47:47,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [219548203] [2024-11-13 23:47:47,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:47:47,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:47:47,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:47:47,766 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:47:47,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-13 23:47:47,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:47:47,828 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-13 23:47:47,830 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:47:50,440 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 23:47:50,440 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:47:54,320 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:47:54,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944018583] [2024-11-13 23:47:54,320 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 23:47:54,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219548203] [2024-11-13 23:47:54,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [219548203] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:47:54,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [965300680] [2024-11-13 23:47:54,321 INFO L159 IcfgInterpreter]: Started Sifa with 37 locations of interest [2024-11-13 23:47:54,321 INFO L166 IcfgInterpreter]: Building call graph [2024-11-13 23:47:54,321 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-13 23:47:54,322 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-13 23:47:54,322 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-13 23:47:55,231 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 34 for LOIs [2024-11-13 23:47:55,236 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2024-11-13 23:47:55,238 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-13 23:48:08,343 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '49450#(and (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (exists ((|v_ULTIMATE.start_main_~a~0#1_215| Int) (|v_ULTIMATE.start_main_~b~0#1_203| Int) (|v_ULTIMATE.start_main_~p~0#1_124| Int)) (and (<= 9223372036854775808 (* |v_ULTIMATE.start_main_~a~0#1_215| |v_ULTIMATE.start_main_~b~0#1_203| |v_ULTIMATE.start_main_~p~0#1_124|)) (<= (* |v_ULTIMATE.start_main_~a~0#1_215| |v_ULTIMATE.start_main_~b~0#1_203|) 9223372036854775807) (<= 0 (+ 9223372036854775808 (* |v_ULTIMATE.start_main_~a~0#1_215| |v_ULTIMATE.start_main_~b~0#1_203|))))) (<= |ULTIMATE.start_main_~y~0#1| 20) (<= |ULTIMATE.start_main_~x~0#1| 20))' at error location [2024-11-13 23:48:08,343 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-13 23:48:08,343 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-13 23:48:08,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2024-11-13 23:48:08,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170580858] [2024-11-13 23:48:08,344 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-13 23:48:08,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-13 23:48:08,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:48:08,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-13 23:48:08,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=336, Invalid=2316, Unknown=0, NotChecked=0, Total=2652 [2024-11-13 23:48:08,345 INFO L87 Difference]: Start difference. First operand 834 states and 1036 transitions. Second operand has 17 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 states have internal predecessors, (47), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-13 23:48:12,441 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-13 23:48:14,510 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-13 23:48:19,554 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-13 23:48:26,274 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-13 23:48:28,994 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-13 23:48:34,204 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-13 23:48:36,651 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-13 23:48:39,515 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-13 23:48:41,522 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-13 23:48:42,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:48:42,459 INFO L93 Difference]: Finished difference Result 872 states and 1078 transitions. [2024-11-13 23:48:42,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-13 23:48:42,460 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 states have internal predecessors, (47), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) Word has length 59 [2024-11-13 23:48:42,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:48:42,464 INFO L225 Difference]: With dead ends: 872 [2024-11-13 23:48:42,465 INFO L226 Difference]: Without dead ends: 871 [2024-11-13 23:48:42,466 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 78 SyntacticMatches, 5 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1225 ImplicationChecksByTransitivity, 24.0s TimeCoverageRelationStatistics Valid=437, Invalid=3220, Unknown=3, NotChecked=0, Total=3660 [2024-11-13 23:48:42,466 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 254 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 1327 mSolverCounterSat, 12 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 1351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1327 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.3s IncrementalHoareTripleChecker+Time [2024-11-13 23:48:42,466 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [256 Valid, 243 Invalid, 1351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1327 Invalid, 12 Unknown, 0 Unchecked, 27.3s Time] [2024-11-13 23:48:42,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2024-11-13 23:48:42,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 846. [2024-11-13 23:48:42,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 846 states, 791 states have (on average 1.2553729456384324) internal successors, (993), 815 states have internal predecessors, (993), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-11-13 23:48:42,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 846 states to 846 states and 1049 transitions. [2024-11-13 23:48:42,526 INFO L78 Accepts]: Start accepts. Automaton has 846 states and 1049 transitions. Word has length 59 [2024-11-13 23:48:42,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:48:42,526 INFO L471 AbstractCegarLoop]: Abstraction has 846 states and 1049 transitions. [2024-11-13 23:48:42,526 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 states have internal predecessors, (47), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-13 23:48:42,526 INFO L276 IsEmpty]: Start isEmpty. Operand 846 states and 1049 transitions. [2024-11-13 23:48:42,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-13 23:48:42,527 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:48:42,527 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:48:42,540 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-13 23:48:42,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-13 23:48:42,728 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2024-11-13 23:48:42,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:48:42,728 INFO L85 PathProgramCache]: Analyzing trace with hash 749194778, now seen corresponding path program 2 times [2024-11-13 23:48:42,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:48:42,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806639008] [2024-11-13 23:48:42,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:48:42,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:48:42,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 23:48:42,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1652134432] [2024-11-13 23:48:42,746 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 23:48:42,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:48:42,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:48:42,749 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:48:42,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-13 23:48:42,799 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-13 23:48:42,799 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 23:48:42,800 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-13 23:48:42,801 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:48:45,154 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-13 23:48:45,154 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:48:46,650 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:48:46,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806639008] [2024-11-13 23:48:46,650 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 23:48:46,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652134432] [2024-11-13 23:48:46,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1652134432] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 23:48:46,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [874705037] [2024-11-13 23:48:46,651 INFO L159 IcfgInterpreter]: Started Sifa with 36 locations of interest [2024-11-13 23:48:46,651 INFO L166 IcfgInterpreter]: Building call graph [2024-11-13 23:48:46,652 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-13 23:48:46,652 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-13 23:48:46,652 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-13 23:48:47,723 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 34 for LOIs [2024-11-13 23:48:47,730 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2024-11-13 23:48:47,731 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-13 23:49:01,088 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '51588#(exists ((|v_ULTIMATE.start_main_~q~0#1_119| Int) (|v_ULTIMATE.start_main_~p~0#1_131| Int) (|v_ULTIMATE.start_main_~a~0#1_228| Int) (|v_ULTIMATE.start_main_~b~0#1_210| Int)) (and (<= 1 |#StackHeapBarrier|) (<= (* |v_ULTIMATE.start_main_~a~0#1_228| |v_ULTIMATE.start_main_~b~0#1_210|) 9223372036854775807) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= 0 (+ (* |v_ULTIMATE.start_main_~a~0#1_228| |v_ULTIMATE.start_main_~b~0#1_210|) 9223372036854775808)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= (+ 9223372036854775809 |v_ULTIMATE.start_main_~q~0#1_119| (* |v_ULTIMATE.start_main_~a~0#1_228| |v_ULTIMATE.start_main_~b~0#1_210| |v_ULTIMATE.start_main_~p~0#1_131|)) 0) (<= |ULTIMATE.start_main_~y~0#1| 20) (<= |ULTIMATE.start_main_~x~0#1| 20) (<= 0 (+ 9223372036854775808 (* |v_ULTIMATE.start_main_~a~0#1_228| |v_ULTIMATE.start_main_~b~0#1_210| |v_ULTIMATE.start_main_~p~0#1_131|))) (<= (* |v_ULTIMATE.start_main_~a~0#1_228| |v_ULTIMATE.start_main_~b~0#1_210| |v_ULTIMATE.start_main_~p~0#1_131|) 9223372036854775807)))' at error location [2024-11-13 23:49:01,088 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-13 23:49:01,088 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-13 23:49:01,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2024-11-13 23:49:01,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508012722] [2024-11-13 23:49:01,088 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-13 23:49:01,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-13 23:49:01,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:49:01,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-13 23:49:01,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=367, Invalid=1985, Unknown=0, NotChecked=0, Total=2352 [2024-11-13 23:49:01,089 INFO L87 Difference]: Start difference. First operand 846 states and 1049 transitions. Second operand has 12 states, 9 states have (on average 4.333333333333333) internal successors, (39), 10 states have internal predecessors, (39), 3 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-13 23:49:02,782 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-13 23:49:09,111 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-13 23:49:12,451 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-13 23:49:15,411 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-13 23:49:19,130 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-13 23:49:19,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:49:19,737 INFO L93 Difference]: Finished difference Result 912 states and 1128 transitions. [2024-11-13 23:49:19,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 23:49:19,737 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 4.333333333333333) internal successors, (39), 10 states have internal predecessors, (39), 3 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 59 [2024-11-13 23:49:19,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:49:19,739 INFO L225 Difference]: With dead ends: 912 [2024-11-13 23:49:19,739 INFO L226 Difference]: Without dead ends: 911 [2024-11-13 23:49:19,740 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 81 SyntacticMatches, 5 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1153 ImplicationChecksByTransitivity, 20.8s TimeCoverageRelationStatistics Valid=455, Invalid=2513, Unknown=2, NotChecked=0, Total=2970 [2024-11-13 23:49:19,740 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 228 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 13 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.7s IncrementalHoareTripleChecker+Time [2024-11-13 23:49:19,740 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 195 Invalid, 739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 723 Invalid, 3 Unknown, 0 Unchecked, 13.7s Time] [2024-11-13 23:49:19,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 911 states. [2024-11-13 23:49:19,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 911 to 858. [2024-11-13 23:49:19,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 858 states, 803 states have (on average 1.2528019925280198) internal successors, (1006), 827 states have internal predecessors, (1006), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-11-13 23:49:19,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 1062 transitions. [2024-11-13 23:49:19,803 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 1062 transitions. Word has length 59 [2024-11-13 23:49:19,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:49:19,804 INFO L471 AbstractCegarLoop]: Abstraction has 858 states and 1062 transitions. [2024-11-13 23:49:19,804 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 4.333333333333333) internal successors, (39), 10 states have internal predecessors, (39), 3 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-13 23:49:19,804 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 1062 transitions. [2024-11-13 23:49:19,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-13 23:49:19,804 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:49:19,805 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:49:19,818 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-13 23:49:20,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-13 23:49:20,005 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2024-11-13 23:49:20,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:49:20,005 INFO L85 PathProgramCache]: Analyzing trace with hash -369640712, now seen corresponding path program 1 times [2024-11-13 23:49:20,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:49:20,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774047992] [2024-11-13 23:49:20,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:49:20,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:49:20,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 23:49:20,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [527701950] [2024-11-13 23:49:20,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:49:20,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:49:20,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:49:20,024 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:49:20,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-13 23:49:20,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:49:20,080 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-13 23:49:20,081 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:49:20,377 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 23:49:20,377 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:49:20,600 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 23:49:20,600 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:49:20,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774047992] [2024-11-13 23:49:20,601 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 23:49:20,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [527701950] [2024-11-13 23:49:20,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [527701950] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 23:49:20,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1373135945] [2024-11-13 23:49:20,602 INFO L159 IcfgInterpreter]: Started Sifa with 37 locations of interest [2024-11-13 23:49:20,602 INFO L166 IcfgInterpreter]: Building call graph [2024-11-13 23:49:20,602 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-13 23:49:20,602 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-13 23:49:20,602 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-13 23:49:21,546 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 34 for LOIs [2024-11-13 23:49:21,551 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2024-11-13 23:49:21,552 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-13 23:49:30,781 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '53900#(exists ((|v_ULTIMATE.start_main_~a~0#1_235| Int) (|v_ULTIMATE.start_main_~p~0#1_138| Int) (|v_ULTIMATE.start_main_~b~0#1_222| Int) (|v_ULTIMATE.start_main_~q~0#1_127| Int)) (and (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= (* |v_ULTIMATE.start_main_~a~0#1_235| |v_ULTIMATE.start_main_~b~0#1_222|) 9223372036854775807) (<= (* |v_ULTIMATE.start_main_~a~0#1_235| |v_ULTIMATE.start_main_~b~0#1_222| |v_ULTIMATE.start_main_~p~0#1_138|) 9223372036854775807) (<= 0 (+ 9223372036854775808 (* |v_ULTIMATE.start_main_~a~0#1_235| |v_ULTIMATE.start_main_~b~0#1_222| |v_ULTIMATE.start_main_~p~0#1_138|))) (<= |ULTIMATE.start_main_~y~0#1| 20) (<= |ULTIMATE.start_main_~x~0#1| 20) (<= 0 (+ (* |v_ULTIMATE.start_main_~a~0#1_235| |v_ULTIMATE.start_main_~b~0#1_222|) 9223372036854775808)) (<= (+ 9223372036854775809 |v_ULTIMATE.start_main_~q~0#1_127| (* |v_ULTIMATE.start_main_~a~0#1_235| |v_ULTIMATE.start_main_~b~0#1_222| |v_ULTIMATE.start_main_~p~0#1_138|)) 0)))' at error location [2024-11-13 23:49:30,781 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-13 23:49:30,782 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 23:49:30,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2024-11-13 23:49:30,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187505273] [2024-11-13 23:49:30,782 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 23:49:30,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 23:49:30,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:49:30,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 23:49:30,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=265, Invalid=1375, Unknown=0, NotChecked=0, Total=1640 [2024-11-13 23:49:30,783 INFO L87 Difference]: Start difference. First operand 858 states and 1062 transitions. Second operand has 10 states, 8 states have (on average 8.625) internal successors, (69), 10 states have internal predecessors, (69), 6 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (9), 5 states have call predecessors, (9), 6 states have call successors, (9) [2024-11-13 23:49:33,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 23:49:33,384 INFO L93 Difference]: Finished difference Result 1088 states and 1354 transitions. [2024-11-13 23:49:33,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 23:49:33,384 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 8.625) internal successors, (69), 10 states have internal predecessors, (69), 6 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (9), 5 states have call predecessors, (9), 6 states have call successors, (9) Word has length 60 [2024-11-13 23:49:33,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 23:49:33,388 INFO L225 Difference]: With dead ends: 1088 [2024-11-13 23:49:33,388 INFO L226 Difference]: Without dead ends: 1086 [2024-11-13 23:49:33,388 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 134 SyntacticMatches, 5 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 889 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=337, Invalid=1919, Unknown=0, NotChecked=0, Total=2256 [2024-11-13 23:49:33,389 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 293 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-13 23:49:33,389 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [293 Valid, 148 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-13 23:49:33,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1086 states. [2024-11-13 23:49:33,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1086 to 921. [2024-11-13 23:49:33,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 921 states, 862 states have (on average 1.251740139211137) internal successors, (1079), 886 states have internal predecessors, (1079), 32 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-11-13 23:49:33,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 921 states to 921 states and 1143 transitions. [2024-11-13 23:49:33,476 INFO L78 Accepts]: Start accepts. Automaton has 921 states and 1143 transitions. Word has length 60 [2024-11-13 23:49:33,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 23:49:33,476 INFO L471 AbstractCegarLoop]: Abstraction has 921 states and 1143 transitions. [2024-11-13 23:49:33,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 8.625) internal successors, (69), 10 states have internal predecessors, (69), 6 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (9), 5 states have call predecessors, (9), 6 states have call successors, (9) [2024-11-13 23:49:33,476 INFO L276 IsEmpty]: Start isEmpty. Operand 921 states and 1143 transitions. [2024-11-13 23:49:33,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-13 23:49:33,477 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:49:33,477 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 23:49:33,490 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-13 23:49:33,677 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:49:33,677 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2024-11-13 23:49:33,677 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:49:33,677 INFO L85 PathProgramCache]: Analyzing trace with hash 2008270073, now seen corresponding path program 1 times [2024-11-13 23:49:33,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:49:33,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499429679] [2024-11-13 23:49:33,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:49:33,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 23:49:33,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 23:49:33,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [56138676] [2024-11-13 23:49:33,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:49:33,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 23:49:33,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:49:33,697 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 23:49:33,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84fb5644-e9e6-4f18-9914-777eaeb93b80/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-13 23:49:33,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 23:49:33,756 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-13 23:49:33,758 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 23:49:35,336 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-13 23:49:35,337 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 23:50:40,154 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 1 proven. 26 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-13 23:50:40,154 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-13 23:50:40,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499429679] [2024-11-13 23:50:40,155 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 23:50:40,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56138676] [2024-11-13 23:50:40,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [56138676] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 23:50:40,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [572782101] [2024-11-13 23:50:40,156 INFO L159 IcfgInterpreter]: Started Sifa with 36 locations of interest [2024-11-13 23:50:40,156 INFO L166 IcfgInterpreter]: Building call graph [2024-11-13 23:50:40,156 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-13 23:50:40,156 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-13 23:50:40,156 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-13 23:50:41,145 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 34 for LOIs [2024-11-13 23:50:41,149 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2024-11-13 23:50:41,150 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-13 23:51:34,470 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '56481#(exists ((|v_ULTIMATE.start_main_~a~0#1_253| Int) (|v_ULTIMATE.start_main_~p~0#1_150| Int) (|v_ULTIMATE.start_main_~q~0#1_139| Int) (|v_ULTIMATE.start_main_~b~0#1_234| Int)) (and (<= 1 |#StackHeapBarrier|) (<= 0 (+ (* |v_ULTIMATE.start_main_~a~0#1_253| |v_ULTIMATE.start_main_~b~0#1_234|) 9223372036854775808)) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= 9223372036854775808 (+ |v_ULTIMATE.start_main_~q~0#1_139| (* |v_ULTIMATE.start_main_~a~0#1_253| |v_ULTIMATE.start_main_~b~0#1_234| |v_ULTIMATE.start_main_~p~0#1_150|))) (<= |ULTIMATE.start_main_~y~0#1| 20) (<= (* |v_ULTIMATE.start_main_~a~0#1_253| |v_ULTIMATE.start_main_~b~0#1_234| |v_ULTIMATE.start_main_~p~0#1_150|) 9223372036854775807) (<= (* |v_ULTIMATE.start_main_~a~0#1_253| |v_ULTIMATE.start_main_~b~0#1_234|) 9223372036854775807) (<= |ULTIMATE.start_main_~x~0#1| 20) (<= 0 (+ 9223372036854775808 (* |v_ULTIMATE.start_main_~a~0#1_253| |v_ULTIMATE.start_main_~b~0#1_234| |v_ULTIMATE.start_main_~p~0#1_150|)))))' at error location [2024-11-13 23:51:34,470 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-13 23:51:34,470 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 23:51:34,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2024-11-13 23:51:34,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686673408] [2024-11-13 23:51:34,471 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 23:51:34,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-13 23:51:34,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-13 23:51:34,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-13 23:51:34,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=420, Invalid=2548, Unknown=2, NotChecked=0, Total=2970 [2024-11-13 23:51:34,472 INFO L87 Difference]: Start difference. First operand 921 states and 1143 transitions. Second operand has 25 states, 23 states have (on average 3.9565217391304346) internal successors, (91), 25 states have internal predecessors, (91), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-13 23:54:08,104 WARN L286 SmtUtils]: Spent 2.49m on a formula simplification. DAG size of input: 151 DAG size of output: 133 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)