./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem03_label47.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b72410ad-ed2a-4fa0-90e7-13f228cc95c7/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b72410ad-ed2a-4fa0-90e7-13f228cc95c7/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_b72410ad-ed2a-4fa0-90e7-13f228cc95c7/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b72410ad-ed2a-4fa0-90e7-13f228cc95c7/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem03_label47.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b72410ad-ed2a-4fa0-90e7-13f228cc95c7/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b72410ad-ed2a-4fa0-90e7-13f228cc95c7/bin/utaipan-verify-sOmjnqqW8E --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c56a954c6b6423eb9dc896d65464ae85499e68477be4edbb5172c2d6eb981204 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 03:02:39,346 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 03:02:39,436 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b72410ad-ed2a-4fa0-90e7-13f228cc95c7/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-14 03:02:39,444 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 03:02:39,445 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 03:02:39,484 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 03:02:39,485 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 03:02:39,486 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 03:02:39,486 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 03:02:39,487 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 03:02:39,487 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 03:02:39,488 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 03:02:39,488 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 03:02:39,488 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 03:02:39,488 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 03:02:39,488 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 03:02:39,488 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 03:02:39,488 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 03:02:39,489 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 03:02:39,489 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 03:02:39,489 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 03:02:39,489 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 03:02:39,489 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 03:02:39,490 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 03:02:39,490 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 03:02:39,490 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 03:02:39,490 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 03:02:39,490 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 03:02:39,490 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 03:02:39,490 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 03:02:39,490 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 03:02:39,491 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 03:02:39,491 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 03:02:39,491 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 03:02:39,491 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 03:02:39,491 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 03:02:39,491 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 03:02:39,491 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 03:02:39,492 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 03:02:39,492 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 03:02:39,492 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 03:02:39,492 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 03:02:39,492 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 03:02:39,492 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 03:02:39,492 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 03:02:39,493 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 03:02:39,493 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 03:02:39,493 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_b72410ad-ed2a-4fa0-90e7-13f228cc95c7/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 ! call(reach_error())) ) 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 -> c56a954c6b6423eb9dc896d65464ae85499e68477be4edbb5172c2d6eb981204 [2024-11-14 03:02:39,831 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 03:02:39,845 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 03:02:39,848 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 03:02:39,849 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 03:02:39,850 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 03:02:39,851 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b72410ad-ed2a-4fa0-90e7-13f228cc95c7/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/eca-rers2012/Problem03_label47.c Unable to find full path for "g++" [2024-11-14 03:02:41,787 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 03:02:42,321 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 03:02:42,322 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b72410ad-ed2a-4fa0-90e7-13f228cc95c7/sv-benchmarks/c/eca-rers2012/Problem03_label47.c [2024-11-14 03:02:42,347 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b72410ad-ed2a-4fa0-90e7-13f228cc95c7/bin/utaipan-verify-sOmjnqqW8E/data/b96681411/f4b9aa87a7d44a988dea5465a6bb779f/FLAG3fde94171 [2024-11-14 03:02:42,370 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b72410ad-ed2a-4fa0-90e7-13f228cc95c7/bin/utaipan-verify-sOmjnqqW8E/data/b96681411/f4b9aa87a7d44a988dea5465a6bb779f [2024-11-14 03:02:42,373 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 03:02:42,374 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 03:02:42,376 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 03:02:42,376 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 03:02:42,381 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 03:02:42,382 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 03:02:42" (1/1) ... [2024-11-14 03:02:42,385 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3118d732 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:02:42, skipping insertion in model container [2024-11-14 03:02:42,385 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 03:02:42" (1/1) ... [2024-11-14 03:02:42,462 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 03:02:43,014 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b72410ad-ed2a-4fa0-90e7-13f228cc95c7/sv-benchmarks/c/eca-rers2012/Problem03_label47.c[60825,60838] [2024-11-14 03:02:43,045 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 03:02:43,058 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 03:02:43,346 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b72410ad-ed2a-4fa0-90e7-13f228cc95c7/sv-benchmarks/c/eca-rers2012/Problem03_label47.c[60825,60838] [2024-11-14 03:02:43,358 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 03:02:43,386 INFO L204 MainTranslator]: Completed translation [2024-11-14 03:02:43,387 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:02:43 WrapperNode [2024-11-14 03:02:43,387 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 03:02:43,388 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 03:02:43,388 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 03:02:43,388 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 03:02:43,397 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:02:43" (1/1) ... [2024-11-14 03:02:43,424 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:02:43" (1/1) ... [2024-11-14 03:02:43,514 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1771 [2024-11-14 03:02:43,515 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 03:02:43,516 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 03:02:43,516 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 03:02:43,517 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 03:02:43,525 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:02:43" (1/1) ... [2024-11-14 03:02:43,525 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:02:43" (1/1) ... [2024-11-14 03:02:43,540 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:02:43" (1/1) ... [2024-11-14 03:02:43,540 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:02:43" (1/1) ... [2024-11-14 03:02:43,603 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:02:43" (1/1) ... [2024-11-14 03:02:43,623 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:02:43" (1/1) ... [2024-11-14 03:02:43,647 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:02:43" (1/1) ... [2024-11-14 03:02:43,657 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:02:43" (1/1) ... [2024-11-14 03:02:43,672 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 03:02:43,675 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 03:02:43,675 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 03:02:43,675 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 03:02:43,676 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:02:43" (1/1) ... [2024-11-14 03:02:43,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 03:02:43,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b72410ad-ed2a-4fa0-90e7-13f228cc95c7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:02:43,713 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b72410ad-ed2a-4fa0-90e7-13f228cc95c7/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 03:02:43,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b72410ad-ed2a-4fa0-90e7-13f228cc95c7/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 03:02:43,746 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 03:02:43,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 03:02:43,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 03:02:43,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 03:02:43,859 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 03:02:43,861 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 03:02:46,348 INFO L? ?]: Removed 147 outVars from TransFormulas that were not future-live. [2024-11-14 03:02:46,348 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 03:02:46,822 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 03:02:46,824 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-14 03:02:46,824 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:02:46 BoogieIcfgContainer [2024-11-14 03:02:46,824 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 03:02:46,826 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 03:02:46,826 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 03:02:46,832 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 03:02:46,832 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 03:02:42" (1/3) ... [2024-11-14 03:02:46,833 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76519c89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 03:02:46, skipping insertion in model container [2024-11-14 03:02:46,833 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:02:43" (2/3) ... [2024-11-14 03:02:46,834 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76519c89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 03:02:46, skipping insertion in model container [2024-11-14 03:02:46,834 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:02:46" (3/3) ... [2024-11-14 03:02:46,835 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label47.c [2024-11-14 03:02:46,855 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 03:02:46,858 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem03_label47.c that has 1 procedures, 148 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-14 03:02:46,936 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 03:02:46,952 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;@6c377a72, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 03:02:46,952 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-14 03:02:46,959 INFO L276 IsEmpty]: Start isEmpty. Operand has 148 states, 146 states have (on average 1.9726027397260273) internal successors, (288), 147 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:02:46,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-14 03:02:46,973 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:02:46,974 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 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, 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] [2024-11-14 03:02:46,975 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:02:46,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:02:46,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1934941613, now seen corresponding path program 1 times [2024-11-14 03:02:46,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:02:46,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236991986] [2024-11-14 03:02:46,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:02:46,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:02:47,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:02:48,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:02:48,495 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:02:48,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236991986] [2024-11-14 03:02:48,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236991986] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:02:48,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:02:48,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 03:02:48,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370212588] [2024-11-14 03:02:48,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:02:48,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:02:48,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:02:48,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:02:48,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:02:48,533 INFO L87 Difference]: Start difference. First operand has 148 states, 146 states have (on average 1.9726027397260273) internal successors, (288), 147 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:02:49,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:02:49,734 INFO L93 Difference]: Finished difference Result 440 states and 860 transitions. [2024-11-14 03:02:49,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:02:49,737 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2024-11-14 03:02:49,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:02:49,749 INFO L225 Difference]: With dead ends: 440 [2024-11-14 03:02:49,751 INFO L226 Difference]: Without dead ends: 289 [2024-11-14 03:02:49,756 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:02:49,763 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 31 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:02:49,764 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 50 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 471 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-14 03:02:49,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2024-11-14 03:02:49,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2024-11-14 03:02:49,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 288 states have (on average 1.8125) internal successors, (522), 288 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:02:49,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 522 transitions. [2024-11-14 03:02:49,837 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 522 transitions. Word has length 143 [2024-11-14 03:02:49,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:02:49,841 INFO L471 AbstractCegarLoop]: Abstraction has 289 states and 522 transitions. [2024-11-14 03:02:49,841 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:02:49,841 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 522 transitions. [2024-11-14 03:02:49,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-14 03:02:49,844 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:02:49,844 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 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, 1, 1, 1, 1, 1] [2024-11-14 03:02:49,844 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 03:02:49,845 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:02:49,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:02:49,845 INFO L85 PathProgramCache]: Analyzing trace with hash -770510707, now seen corresponding path program 1 times [2024-11-14 03:02:49,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:02:49,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114369995] [2024-11-14 03:02:49,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:02:49,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:02:49,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:02:50,418 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:02:50,420 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:02:50,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114369995] [2024-11-14 03:02:50,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114369995] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:02:50,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:02:50,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 03:02:50,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502671630] [2024-11-14 03:02:50,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:02:50,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:02:50,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:02:50,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:02:50,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:02:50,426 INFO L87 Difference]: Start difference. First operand 289 states and 522 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 2 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:02:51,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:02:51,442 INFO L93 Difference]: Finished difference Result 863 states and 1563 transitions. [2024-11-14 03:02:51,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:02:51,443 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 2 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 153 [2024-11-14 03:02:51,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:02:51,446 INFO L225 Difference]: With dead ends: 863 [2024-11-14 03:02:51,448 INFO L226 Difference]: Without dead ends: 575 [2024-11-14 03:02:51,449 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:02:51,450 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 157 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-14 03:02:51,451 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 33 Invalid, 623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 455 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-14 03:02:51,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2024-11-14 03:02:51,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 575. [2024-11-14 03:02:51,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 574 states have (on average 1.6986062717770034) internal successors, (975), 574 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:02:51,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 975 transitions. [2024-11-14 03:02:51,481 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 975 transitions. Word has length 153 [2024-11-14 03:02:51,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:02:51,481 INFO L471 AbstractCegarLoop]: Abstraction has 575 states and 975 transitions. [2024-11-14 03:02:51,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 2 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:02:51,482 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 975 transitions. [2024-11-14 03:02:51,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-14 03:02:51,485 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:02:51,486 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 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, 1, 1, 1, 1, 1] [2024-11-14 03:02:51,486 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-14 03:02:51,486 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:02:51,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:02:51,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1429098408, now seen corresponding path program 1 times [2024-11-14 03:02:51,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:02:51,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828275749] [2024-11-14 03:02:51,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:02:51,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:02:51,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:02:51,999 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:02:52,001 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:02:52,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828275749] [2024-11-14 03:02:52,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828275749] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:02:52,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:02:52,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 03:02:52,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873644880] [2024-11-14 03:02:52,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:02:52,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:02:52,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:02:52,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:02:52,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:02:52,004 INFO L87 Difference]: Start difference. First operand 575 states and 975 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 2 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:02:52,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:02:52,945 INFO L93 Difference]: Finished difference Result 1723 states and 2923 transitions. [2024-11-14 03:02:52,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:02:52,946 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 2 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2024-11-14 03:02:52,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:02:52,951 INFO L225 Difference]: With dead ends: 1723 [2024-11-14 03:02:52,951 INFO L226 Difference]: Without dead ends: 1149 [2024-11-14 03:02:52,953 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:02:52,954 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 183 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-14 03:02:52,954 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 54 Invalid, 583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-14 03:02:52,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1149 states. [2024-11-14 03:02:53,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1149 to 1147. [2024-11-14 03:02:53,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1147 states, 1146 states have (on average 1.6657940663176265) internal successors, (1909), 1146 states have internal predecessors, (1909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:02:53,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1147 states to 1147 states and 1909 transitions. [2024-11-14 03:02:53,013 INFO L78 Accepts]: Start accepts. Automaton has 1147 states and 1909 transitions. Word has length 155 [2024-11-14 03:02:53,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:02:53,013 INFO L471 AbstractCegarLoop]: Abstraction has 1147 states and 1909 transitions. [2024-11-14 03:02:53,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 2 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:02:53,014 INFO L276 IsEmpty]: Start isEmpty. Operand 1147 states and 1909 transitions. [2024-11-14 03:02:53,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-14 03:02:53,020 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:02:53,020 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 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, 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] [2024-11-14 03:02:53,021 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-14 03:02:53,021 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:02:53,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:02:53,022 INFO L85 PathProgramCache]: Analyzing trace with hash 2009966673, now seen corresponding path program 1 times [2024-11-14 03:02:53,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:02:53,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765795431] [2024-11-14 03:02:53,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:02:53,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:02:53,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:02:53,295 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:02:53,295 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:02:53,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765795431] [2024-11-14 03:02:53,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765795431] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:02:53,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:02:53,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 03:02:53,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276366346] [2024-11-14 03:02:53,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:02:53,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:02:53,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:02:53,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:02:53,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:02:53,298 INFO L87 Difference]: Start difference. First operand 1147 states and 1909 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 2 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:02:54,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:02:54,287 INFO L93 Difference]: Finished difference Result 3437 states and 5724 transitions. [2024-11-14 03:02:54,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:02:54,288 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 2 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 158 [2024-11-14 03:02:54,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:02:54,298 INFO L225 Difference]: With dead ends: 3437 [2024-11-14 03:02:54,298 INFO L226 Difference]: Without dead ends: 2291 [2024-11-14 03:02:54,300 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:02:54,303 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 154 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-14 03:02:54,305 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 51 Invalid, 582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-14 03:02:54,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2291 states. [2024-11-14 03:02:54,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2291 to 2291. [2024-11-14 03:02:54,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2291 states, 2290 states have (on average 1.5655021834061136) internal successors, (3585), 2290 states have internal predecessors, (3585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:02:54,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2291 states to 2291 states and 3585 transitions. [2024-11-14 03:02:54,378 INFO L78 Accepts]: Start accepts. Automaton has 2291 states and 3585 transitions. Word has length 158 [2024-11-14 03:02:54,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:02:54,379 INFO L471 AbstractCegarLoop]: Abstraction has 2291 states and 3585 transitions. [2024-11-14 03:02:54,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 2 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:02:54,379 INFO L276 IsEmpty]: Start isEmpty. Operand 2291 states and 3585 transitions. [2024-11-14 03:02:54,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-11-14 03:02:54,385 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:02:54,385 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:02:54,385 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-14 03:02:54,386 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:02:54,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:02:54,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1166233043, now seen corresponding path program 1 times [2024-11-14 03:02:54,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:02:54,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474879721] [2024-11-14 03:02:54,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:02:54,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:02:54,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:02:54,684 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:02:54,684 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:02:54,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474879721] [2024-11-14 03:02:54,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474879721] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:02:54,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:02:54,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 03:02:54,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810926195] [2024-11-14 03:02:54,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:02:54,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:02:54,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:02:54,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:02:54,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:02:54,686 INFO L87 Difference]: Start difference. First operand 2291 states and 3585 transitions. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 2 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:02:55,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:02:55,671 INFO L93 Difference]: Finished difference Result 6869 states and 10752 transitions. [2024-11-14 03:02:55,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:02:55,672 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 2 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2024-11-14 03:02:55,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:02:55,688 INFO L225 Difference]: With dead ends: 6869 [2024-11-14 03:02:55,688 INFO L226 Difference]: Without dead ends: 4579 [2024-11-14 03:02:55,693 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:02:55,694 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 151 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-14 03:02:55,695 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 77 Invalid, 585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 504 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-14 03:02:55,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4579 states. [2024-11-14 03:02:55,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4579 to 4579. [2024-11-14 03:02:55,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4579 states, 4578 states have (on average 1.4936653560506772) internal successors, (6838), 4578 states have internal predecessors, (6838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:02:55,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4579 states to 4579 states and 6838 transitions. [2024-11-14 03:02:55,815 INFO L78 Accepts]: Start accepts. Automaton has 4579 states and 6838 transitions. Word has length 170 [2024-11-14 03:02:55,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:02:55,816 INFO L471 AbstractCegarLoop]: Abstraction has 4579 states and 6838 transitions. [2024-11-14 03:02:55,817 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 2 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:02:55,817 INFO L276 IsEmpty]: Start isEmpty. Operand 4579 states and 6838 transitions. [2024-11-14 03:02:55,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2024-11-14 03:02:55,827 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:02:55,827 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 3, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:02:55,828 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-14 03:02:55,828 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:02:55,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:02:55,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1184726859, now seen corresponding path program 1 times [2024-11-14 03:02:55,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:02:55,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763364983] [2024-11-14 03:02:55,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:02:55,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:02:55,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:02:56,210 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 49 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-14 03:02:56,210 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:02:56,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763364983] [2024-11-14 03:02:56,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763364983] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:02:56,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038879095] [2024-11-14 03:02:56,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:02:56,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:02:56,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b72410ad-ed2a-4fa0-90e7-13f228cc95c7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:02:56,216 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b72410ad-ed2a-4fa0-90e7-13f228cc95c7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:02:56,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b72410ad-ed2a-4fa0-90e7-13f228cc95c7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 03:02:56,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:02:56,437 INFO L255 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-14 03:02:56,450 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:02:56,493 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-14 03:02:56,493 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:02:56,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2038879095] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:02:56,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 03:02:56,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-14 03:02:56,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461927602] [2024-11-14 03:02:56,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:02:56,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:02:56,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:02:56,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:02:56,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:02:56,496 INFO L87 Difference]: Start difference. First operand 4579 states and 6838 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:02:57,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:02:57,558 INFO L93 Difference]: Finished difference Result 12589 states and 18933 transitions. [2024-11-14 03:02:57,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:02:57,558 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 183 [2024-11-14 03:02:57,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:02:57,588 INFO L225 Difference]: With dead ends: 12589 [2024-11-14 03:02:57,588 INFO L226 Difference]: Without dead ends: 8297 [2024-11-14 03:02:57,593 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:02:57,595 INFO L432 NwaCegarLoop]: 255 mSDtfsCounter, 149 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-14 03:02:57,595 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 259 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-14 03:02:57,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8297 states. [2024-11-14 03:02:57,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8297 to 8297. [2024-11-14 03:02:57,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8297 states, 8296 states have (on average 1.310149469623915) internal successors, (10869), 8296 states have internal predecessors, (10869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:02:57,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8297 states to 8297 states and 10869 transitions. [2024-11-14 03:02:57,838 INFO L78 Accepts]: Start accepts. Automaton has 8297 states and 10869 transitions. Word has length 183 [2024-11-14 03:02:57,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:02:57,839 INFO L471 AbstractCegarLoop]: Abstraction has 8297 states and 10869 transitions. [2024-11-14 03:02:57,839 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:02:57,839 INFO L276 IsEmpty]: Start isEmpty. Operand 8297 states and 10869 transitions. [2024-11-14 03:02:57,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2024-11-14 03:02:57,852 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:02:57,853 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:02:57,873 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b72410ad-ed2a-4fa0-90e7-13f228cc95c7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-14 03:02:58,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b72410ad-ed2a-4fa0-90e7-13f228cc95c7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:02:58,054 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:02:58,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:02:58,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1071825974, now seen corresponding path program 1 times [2024-11-14 03:02:58,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:02:58,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300915957] [2024-11-14 03:02:58,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:02:58,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:02:58,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:02:58,241 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-14 03:02:58,242 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:02:58,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300915957] [2024-11-14 03:02:58,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300915957] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:02:58,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:02:58,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 03:02:58,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031263348] [2024-11-14 03:02:58,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:02:58,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:02:58,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:02:58,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:02:58,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:02:58,244 INFO L87 Difference]: Start difference. First operand 8297 states and 10869 transitions. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:02:59,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:02:59,257 INFO L93 Difference]: Finished difference Result 22170 states and 29191 transitions. [2024-11-14 03:02:59,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:02:59,257 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 191 [2024-11-14 03:02:59,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:02:59,317 INFO L225 Difference]: With dead ends: 22170 [2024-11-14 03:02:59,317 INFO L226 Difference]: Without dead ends: 14160 [2024-11-14 03:02:59,326 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:02:59,327 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 150 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-14 03:02:59,327 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 76 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-14 03:02:59,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14160 states. [2024-11-14 03:02:59,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14160 to 14160. [2024-11-14 03:02:59,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14160 states, 14159 states have (on average 1.279398262589166) internal successors, (18115), 14159 states have internal predecessors, (18115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:02:59,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14160 states to 14160 states and 18115 transitions. [2024-11-14 03:02:59,763 INFO L78 Accepts]: Start accepts. Automaton has 14160 states and 18115 transitions. Word has length 191 [2024-11-14 03:02:59,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:02:59,764 INFO L471 AbstractCegarLoop]: Abstraction has 14160 states and 18115 transitions. [2024-11-14 03:02:59,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:02:59,764 INFO L276 IsEmpty]: Start isEmpty. Operand 14160 states and 18115 transitions. [2024-11-14 03:02:59,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2024-11-14 03:02:59,783 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:02:59,784 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:02:59,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-14 03:02:59,784 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:02:59,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:02:59,785 INFO L85 PathProgramCache]: Analyzing trace with hash -549509224, now seen corresponding path program 1 times [2024-11-14 03:02:59,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:02:59,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073957248] [2024-11-14 03:02:59,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:02:59,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:02:59,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:03:00,293 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 61 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-14 03:03:00,294 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:03:00,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073957248] [2024-11-14 03:03:00,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073957248] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:03:00,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538083509] [2024-11-14 03:03:00,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:03:00,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:03:00,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b72410ad-ed2a-4fa0-90e7-13f228cc95c7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:03:00,298 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b72410ad-ed2a-4fa0-90e7-13f228cc95c7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:03:00,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b72410ad-ed2a-4fa0-90e7-13f228cc95c7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-14 03:03:00,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:03:00,520 INFO L255 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 03:03:00,527 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:03:00,656 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-14 03:03:00,656 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:03:00,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538083509] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:03:00,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 03:03:00,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-11-14 03:03:00,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984825299] [2024-11-14 03:03:00,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:03:00,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:03:00,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:03:00,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:03:00,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:03:00,659 INFO L87 Difference]: Start difference. First operand 14160 states and 18115 transitions. Second operand has 3 states, 3 states have (on average 59.0) internal successors, (177), 2 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:03:01,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:03:01,268 INFO L93 Difference]: Finished difference Result 27890 states and 35665 transitions. [2024-11-14 03:03:01,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:03:01,268 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 2 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 199 [2024-11-14 03:03:01,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:03:01,304 INFO L225 Difference]: With dead ends: 27890 [2024-11-14 03:03:01,305 INFO L226 Difference]: Without dead ends: 14017 [2024-11-14 03:03:01,319 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:03:01,320 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 227 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-14 03:03:01,320 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 4 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-14 03:03:01,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14017 states. [2024-11-14 03:03:01,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14017 to 14017. [2024-11-14 03:03:01,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14017 states, 14016 states have (on average 1.2630565068493151) internal successors, (17703), 14016 states have internal predecessors, (17703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:03:01,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14017 states to 14017 states and 17703 transitions. [2024-11-14 03:03:01,687 INFO L78 Accepts]: Start accepts. Automaton has 14017 states and 17703 transitions. Word has length 199 [2024-11-14 03:03:01,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:03:01,688 INFO L471 AbstractCegarLoop]: Abstraction has 14017 states and 17703 transitions. [2024-11-14 03:03:01,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 2 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:03:01,688 INFO L276 IsEmpty]: Start isEmpty. Operand 14017 states and 17703 transitions. [2024-11-14 03:03:01,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2024-11-14 03:03:01,714 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:03:01,715 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:03:01,735 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b72410ad-ed2a-4fa0-90e7-13f228cc95c7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-14 03:03:01,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b72410ad-ed2a-4fa0-90e7-13f228cc95c7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:03:01,916 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:03:01,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:03:01,917 INFO L85 PathProgramCache]: Analyzing trace with hash -866930673, now seen corresponding path program 1 times [2024-11-14 03:03:01,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:03:01,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194724218] [2024-11-14 03:03:01,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:03:01,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:03:02,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:03:02,590 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 80 proven. 6 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-14 03:03:02,590 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:03:02,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194724218] [2024-11-14 03:03:02,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194724218] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:03:02,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [545452515] [2024-11-14 03:03:02,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:03:02,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:03:02,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b72410ad-ed2a-4fa0-90e7-13f228cc95c7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:03:02,592 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b72410ad-ed2a-4fa0-90e7-13f228cc95c7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:03:02,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b72410ad-ed2a-4fa0-90e7-13f228cc95c7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-14 03:03:02,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:03:02,802 INFO L255 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-14 03:03:02,806 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:03:02,863 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-14 03:03:02,863 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:03:02,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [545452515] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:03:02,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 03:03:02,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-14 03:03:02,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883823291] [2024-11-14 03:03:02,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:03:02,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:03:02,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:03:02,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:03:02,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:03:02,865 INFO L87 Difference]: Start difference. First operand 14017 states and 17703 transitions. Second operand has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:03:03,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:03:03,872 INFO L93 Difference]: Finished difference Result 33181 states and 42846 transitions. [2024-11-14 03:03:03,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:03:03,873 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 218 [2024-11-14 03:03:03,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:03:03,917 INFO L225 Difference]: With dead ends: 33181 [2024-11-14 03:03:03,917 INFO L226 Difference]: Without dead ends: 19165 [2024-11-14 03:03:03,996 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:03:03,997 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 129 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-14 03:03:03,997 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 85 Invalid, 555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-14 03:03:04,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19165 states. [2024-11-14 03:03:04,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19165 to 15876. [2024-11-14 03:03:04,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15876 states, 15875 states have (on average 1.2611023622047244) internal successors, (20020), 15875 states have internal predecessors, (20020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:03:04,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15876 states to 15876 states and 20020 transitions. [2024-11-14 03:03:04,262 INFO L78 Accepts]: Start accepts. Automaton has 15876 states and 20020 transitions. Word has length 218 [2024-11-14 03:03:04,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:03:04,262 INFO L471 AbstractCegarLoop]: Abstraction has 15876 states and 20020 transitions. [2024-11-14 03:03:04,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:03:04,263 INFO L276 IsEmpty]: Start isEmpty. Operand 15876 states and 20020 transitions. [2024-11-14 03:03:04,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-11-14 03:03:04,280 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:03:04,281 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 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, 1, 1, 1, 1] [2024-11-14 03:03:04,302 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b72410ad-ed2a-4fa0-90e7-13f228cc95c7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-14 03:03:04,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b72410ad-ed2a-4fa0-90e7-13f228cc95c7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:03:04,485 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:03:04,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:03:04,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1397675576, now seen corresponding path program 1 times [2024-11-14 03:03:04,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:03:04,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422168958] [2024-11-14 03:03:04,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:03:04,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:03:04,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:03:05,049 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 83 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-14 03:03:05,050 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:03:05,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422168958] [2024-11-14 03:03:05,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422168958] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:03:05,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953929127] [2024-11-14 03:03:05,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:03:05,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:03:05,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b72410ad-ed2a-4fa0-90e7-13f228cc95c7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:03:05,053 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b72410ad-ed2a-4fa0-90e7-13f228cc95c7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:03:05,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b72410ad-ed2a-4fa0-90e7-13f228cc95c7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-14 03:03:05,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:03:05,267 INFO L255 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-14 03:03:05,272 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:03:05,572 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-14 03:03:05,572 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:03:05,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953929127] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:03:05,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 03:03:05,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-14 03:03:05,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987958916] [2024-11-14 03:03:05,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:03:05,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:03:05,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:03:05,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:03:05,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:03:05,574 INFO L87 Difference]: Start difference. First operand 15876 states and 20020 transitions. Second operand has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:03:06,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:03:06,559 INFO L93 Difference]: Finished difference Result 40045 states and 50351 transitions. [2024-11-14 03:03:06,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:03:06,559 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 221 [2024-11-14 03:03:06,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:03:06,610 INFO L225 Difference]: With dead ends: 40045 [2024-11-14 03:03:06,610 INFO L226 Difference]: Without dead ends: 24170 [2024-11-14 03:03:06,621 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:03:06,622 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 11 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-14 03:03:06,622 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 99 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 493 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-14 03:03:06,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24170 states. [2024-11-14 03:03:07,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24170 to 22740. [2024-11-14 03:03:07,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22740 states, 22739 states have (on average 1.2581467962531334) internal successors, (28609), 22739 states have internal predecessors, (28609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:03:07,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22740 states to 22740 states and 28609 transitions. [2024-11-14 03:03:07,174 INFO L78 Accepts]: Start accepts. Automaton has 22740 states and 28609 transitions. Word has length 221 [2024-11-14 03:03:07,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:03:07,176 INFO L471 AbstractCegarLoop]: Abstraction has 22740 states and 28609 transitions. [2024-11-14 03:03:07,176 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:03:07,176 INFO L276 IsEmpty]: Start isEmpty. Operand 22740 states and 28609 transitions. [2024-11-14 03:03:07,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2024-11-14 03:03:07,211 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:03:07,211 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 1, 1, 1, 1] [2024-11-14 03:03:07,232 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b72410ad-ed2a-4fa0-90e7-13f228cc95c7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-14 03:03:07,412 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b72410ad-ed2a-4fa0-90e7-13f228cc95c7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-14 03:03:07,412 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:03:07,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:03:07,412 INFO L85 PathProgramCache]: Analyzing trace with hash -26993198, now seen corresponding path program 1 times [2024-11-14 03:03:07,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:03:07,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647521383] [2024-11-14 03:03:07,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:03:07,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:03:07,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:03:07,852 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-14 03:03:07,852 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:03:07,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647521383] [2024-11-14 03:03:07,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647521383] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:03:07,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:03:07,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 03:03:07,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906409224] [2024-11-14 03:03:07,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:03:07,853 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 03:03:07,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:03:07,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 03:03:07,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 03:03:07,854 INFO L87 Difference]: Start difference. First operand 22740 states and 28609 transitions. Second operand has 4 states, 4 states have (on average 49.75) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:03:09,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:03:09,469 INFO L93 Difference]: Finished difference Result 85094 states and 106982 transitions. [2024-11-14 03:03:09,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 03:03:09,469 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 49.75) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 266 [2024-11-14 03:03:09,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:03:09,593 INFO L225 Difference]: With dead ends: 85094 [2024-11-14 03:03:09,593 INFO L226 Difference]: Without dead ends: 62355 [2024-11-14 03:03:09,621 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 03:03:09,622 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 379 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 751 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-14 03:03:09,622 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [379 Valid, 153 Invalid, 891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 751 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-14 03:03:09,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62355 states. [2024-11-14 03:03:10,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62355 to 59205. [2024-11-14 03:03:10,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59205 states, 59204 states have (on average 1.25197621782312) internal successors, (74122), 59204 states have internal predecessors, (74122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:03:11,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59205 states to 59205 states and 74122 transitions. [2024-11-14 03:03:11,037 INFO L78 Accepts]: Start accepts. Automaton has 59205 states and 74122 transitions. Word has length 266 [2024-11-14 03:03:11,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:03:11,037 INFO L471 AbstractCegarLoop]: Abstraction has 59205 states and 74122 transitions. [2024-11-14 03:03:11,038 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.75) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:03:11,038 INFO L276 IsEmpty]: Start isEmpty. Operand 59205 states and 74122 transitions. [2024-11-14 03:03:11,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2024-11-14 03:03:11,059 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:03:11,060 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1] [2024-11-14 03:03:11,060 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-14 03:03:11,060 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:03:11,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:03:11,061 INFO L85 PathProgramCache]: Analyzing trace with hash -76305250, now seen corresponding path program 1 times [2024-11-14 03:03:11,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:03:11,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036556618] [2024-11-14 03:03:11,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:03:11,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:03:11,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:03:11,289 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:03:11,289 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:03:11,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036556618] [2024-11-14 03:03:11,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036556618] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:03:11,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:03:11,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 03:03:11,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232639356] [2024-11-14 03:03:11,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:03:11,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:03:11,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:03:11,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:03:11,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:03:11,293 INFO L87 Difference]: Start difference. First operand 59205 states and 74122 transitions. Second operand has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:03:12,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:03:12,636 INFO L93 Difference]: Finished difference Result 123700 states and 154699 transitions. [2024-11-14 03:03:12,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:03:12,636 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 266 [2024-11-14 03:03:12,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:03:12,786 INFO L225 Difference]: With dead ends: 123700 [2024-11-14 03:03:12,787 INFO L226 Difference]: Without dead ends: 64496 [2024-11-14 03:03:12,830 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:03:12,831 INFO L432 NwaCegarLoop]: 231 mSDtfsCounter, 132 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-14 03:03:12,831 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 234 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-14 03:03:12,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64496 states. [2024-11-14 03:03:13,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64496 to 60778. [2024-11-14 03:03:13,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60778 states, 60777 states have (on average 1.2099149349260412) internal successors, (73535), 60777 states have internal predecessors, (73535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:03:14,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60778 states to 60778 states and 73535 transitions. [2024-11-14 03:03:14,057 INFO L78 Accepts]: Start accepts. Automaton has 60778 states and 73535 transitions. Word has length 266 [2024-11-14 03:03:14,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:03:14,058 INFO L471 AbstractCegarLoop]: Abstraction has 60778 states and 73535 transitions. [2024-11-14 03:03:14,058 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:03:14,058 INFO L276 IsEmpty]: Start isEmpty. Operand 60778 states and 73535 transitions. [2024-11-14 03:03:14,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2024-11-14 03:03:14,077 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:03:14,077 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:03:14,077 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-14 03:03:14,077 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:03:14,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:03:14,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1413273163, now seen corresponding path program 1 times [2024-11-14 03:03:14,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:03:14,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168612324] [2024-11-14 03:03:14,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:03:14,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:03:14,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:03:14,867 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 130 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:03:14,868 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:03:14,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168612324] [2024-11-14 03:03:14,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168612324] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:03:14,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017778634] [2024-11-14 03:03:14,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:03:14,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:03:14,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b72410ad-ed2a-4fa0-90e7-13f228cc95c7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:03:14,870 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b72410ad-ed2a-4fa0-90e7-13f228cc95c7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:03:14,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b72410ad-ed2a-4fa0-90e7-13f228cc95c7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-14 03:03:15,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:03:15,096 INFO L255 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 03:03:15,101 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:03:15,599 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 130 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-14 03:03:15,599 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:03:16,003 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 130 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-14 03:03:16,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017778634] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:03:16,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1644981064] [2024-11-14 03:03:16,042 INFO L159 IcfgInterpreter]: Started Sifa with 145 locations of interest [2024-11-14 03:03:16,042 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:03:16,046 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:03:16,051 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:03:16,051 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:03:45,221 WARN L286 SmtUtils]: Spent 10.43s on a formula simplification that was a NOOP. DAG size: 872 (called from [L 210] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2024-11-14 03:03:55,508 WARN L286 SmtUtils]: Spent 10.28s on a formula simplification that was a NOOP. DAG size: 872 (called from [L 210] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2024-11-14 03:04:54,816 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 13408 conjunctions. This might take some time... [2024-11-14 03:05:10,484 INFO L192 XnfTransformerHelper]: Simplified to disjunction of 13408 conjunctions. [2024-11-14 03:05:10,582 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 13408 conjunctions. This might take some time... [2024-11-14 03:05:26,168 INFO L192 XnfTransformerHelper]: Simplified to disjunction of 13408 conjunctions. [2024-11-14 03:09:19,199 WARN L286 SmtUtils]: Spent 3.88m on a formula simplification that was a NOOP. DAG size: 3754 (called from [L 210] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2024-11-14 03:13:22,267 WARN L286 SmtUtils]: Spent 4.05m on a formula simplification that was a NOOP. DAG size: 3754 (called from [L 210] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm)