./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/zonotope_3.c.p+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-benchs/zonotope_3.c.p+cfa-reducer.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f57f8b833105028fdf95b78a3cf338388755f00064f1be1e7a158d1da7dbd5a2 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 04:58:41,085 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 04:58:41,139 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 04:58:41,143 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 04:58:41,144 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 04:58:41,162 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 04:58:41,163 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 04:58:41,163 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 04:58:41,164 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 04:58:41,164 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 04:58:41,165 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 04:58:41,165 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 04:58:41,166 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 04:58:41,166 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 04:58:41,166 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 04:58:41,167 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 04:58:41,167 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 04:58:41,167 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 04:58:41,168 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 04:58:41,168 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 04:58:41,168 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 04:58:41,169 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 04:58:41,170 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 04:58:41,170 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 04:58:41,170 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 04:58:41,171 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 04:58:41,171 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 04:58:41,171 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 04:58:41,172 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 04:58:41,172 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 04:58:41,172 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 04:58:41,172 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 04:58:41,173 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 04:58:41,173 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 04:58:41,173 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 04:58:41,174 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 04:58:41,174 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 04:58:41,174 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 04:58:41,174 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 04:58:41,175 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 04:58:41,175 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 04:58:41,178 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 04:58:41,178 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f57f8b833105028fdf95b78a3cf338388755f00064f1be1e7a158d1da7dbd5a2 [2024-11-16 04:58:41,449 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 04:58:41,471 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 04:58:41,474 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 04:58:41,475 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 04:58:41,476 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 04:58:41,477 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/zonotope_3.c.p+cfa-reducer.c [2024-11-16 04:58:42,900 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 04:58:43,115 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 04:58:43,116 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/zonotope_3.c.p+cfa-reducer.c [2024-11-16 04:58:43,123 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2fd4b489/8db273dd200f446aa9b7db4de98f3089/FLAG08104d06c [2024-11-16 04:58:43,134 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2fd4b489/8db273dd200f446aa9b7db4de98f3089 [2024-11-16 04:58:43,136 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 04:58:43,138 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 04:58:43,139 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 04:58:43,139 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 04:58:43,147 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 04:58:43,148 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:58:43" (1/1) ... [2024-11-16 04:58:43,149 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65d934f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:58:43, skipping insertion in model container [2024-11-16 04:58:43,149 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:58:43" (1/1) ... [2024-11-16 04:58:43,176 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 04:58:43,377 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/zonotope_3.c.p+cfa-reducer.c[2717,2730] [2024-11-16 04:58:43,387 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 04:58:43,402 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 04:58:43,431 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/zonotope_3.c.p+cfa-reducer.c[2717,2730] [2024-11-16 04:58:43,433 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 04:58:43,455 INFO L204 MainTranslator]: Completed translation [2024-11-16 04:58:43,456 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:58:43 WrapperNode [2024-11-16 04:58:43,456 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 04:58:43,457 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 04:58:43,457 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 04:58:43,457 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 04:58:43,464 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:58:43" (1/1) ... [2024-11-16 04:58:43,471 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:58:43" (1/1) ... [2024-11-16 04:58:43,491 INFO L138 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 126 [2024-11-16 04:58:43,491 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 04:58:43,492 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 04:58:43,492 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 04:58:43,493 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 04:58:43,501 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:58:43" (1/1) ... [2024-11-16 04:58:43,502 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:58:43" (1/1) ... [2024-11-16 04:58:43,508 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:58:43" (1/1) ... [2024-11-16 04:58:43,530 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-16 04:58:43,531 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:58:43" (1/1) ... [2024-11-16 04:58:43,531 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:58:43" (1/1) ... [2024-11-16 04:58:43,536 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:58:43" (1/1) ... [2024-11-16 04:58:43,537 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:58:43" (1/1) ... [2024-11-16 04:58:43,538 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:58:43" (1/1) ... [2024-11-16 04:58:43,539 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:58:43" (1/1) ... [2024-11-16 04:58:43,541 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 04:58:43,542 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 04:58:43,542 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 04:58:43,542 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 04:58:43,543 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:58:43" (1/1) ... [2024-11-16 04:58:43,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 04:58:43,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 04:58:43,581 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-16 04:58:43,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-16 04:58:43,635 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 04:58:43,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 04:58:43,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 04:58:43,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 04:58:43,735 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 04:58:43,741 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 04:58:43,975 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L95: havoc main_~__tmp_8~0#1, main_~g__x~3#1;havoc main_~__tmp_7~0#1, main_~f__x~3#1, main_~main____CPAchecker_TMP_1~0#1;havoc main_~__tmp_6~0#1, main_~g__x~2#1;havoc main_~__tmp_5~0#1, main_~f__x~2#1;havoc main_~main____CPAchecker_TMP_0~0#1; [2024-11-16 04:58:43,976 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L52: havoc main_~__tmp_4~0#1, main_~g__x~1#1;havoc main_~__tmp_3~0#1, main_~f__x~1#1;havoc main_~__tmp_2~0#1, main_~g__x~0#1;havoc main_~__tmp_1~0#1, main_~f__x~0#1; [2024-11-16 04:58:43,976 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L137: havoc main_~__tmp_9~0#1, main_~__VERIFIER_assert__cond~0#1;havoc main_~main____CPAchecker_TMP_2~0#1; [2024-11-16 04:58:43,991 INFO L? ?]: Removed 33 outVars from TransFormulas that were not future-live. [2024-11-16 04:58:43,992 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 04:58:44,002 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 04:58:44,004 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 04:58:44,008 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 04:58:44 BoogieIcfgContainer [2024-11-16 04:58:44,008 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 04:58:44,010 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 04:58:44,010 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 04:58:44,014 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 04:58:44,014 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 04:58:43" (1/3) ... [2024-11-16 04:58:44,015 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@374c006e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:58:44, skipping insertion in model container [2024-11-16 04:58:44,015 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:58:43" (2/3) ... [2024-11-16 04:58:44,015 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@374c006e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:58:44, skipping insertion in model container [2024-11-16 04:58:44,016 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 04:58:44" (3/3) ... [2024-11-16 04:58:44,017 INFO L112 eAbstractionObserver]: Analyzing ICFG zonotope_3.c.p+cfa-reducer.c [2024-11-16 04:58:44,033 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 04:58:44,033 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 04:58:44,094 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 04:58:44,101 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=PETRI_NET, 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;@6b4b8e3e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 04:58:44,102 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 04:58:44,106 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 19 states have internal predecessors, (26), 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) [2024-11-16 04:58:44,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-16 04:58:44,112 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:58:44,113 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:58:44,113 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:58:44,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:58:44,120 INFO L85 PathProgramCache]: Analyzing trace with hash -625593154, now seen corresponding path program 1 times [2024-11-16 04:58:44,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:58:44,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740674943] [2024-11-16 04:58:44,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:58:44,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:58:44,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:58:44,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:58:44,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:58:44,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740674943] [2024-11-16 04:58:44,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740674943] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:58:44,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:58:44,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:58:44,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696815209] [2024-11-16 04:58:44,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:58:44,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:58:44,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:58:44,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:58:44,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:58:44,413 INFO L87 Difference]: Start difference. First operand has 20 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 19 states have internal predecessors, (26), 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 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:58:44,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:58:44,446 INFO L93 Difference]: Finished difference Result 38 states and 50 transitions. [2024-11-16 04:58:44,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:58:44,449 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-16 04:58:44,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:58:44,455 INFO L225 Difference]: With dead ends: 38 [2024-11-16 04:58:44,455 INFO L226 Difference]: Without dead ends: 23 [2024-11-16 04:58:44,458 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 [2024-11-16 04:58:44,464 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 8 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 04:58:44,465 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 41 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 04:58:44,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-16 04:58:44,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 18. [2024-11-16 04:58:44,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:58:44,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2024-11-16 04:58:44,496 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 9 [2024-11-16 04:58:44,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:58:44,497 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2024-11-16 04:58:44,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:58:44,497 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2024-11-16 04:58:44,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-16 04:58:44,498 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:58:44,498 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:58:44,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 04:58:44,499 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:58:44,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:58:44,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1574580666, now seen corresponding path program 1 times [2024-11-16 04:58:44,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:58:44,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061110076] [2024-11-16 04:58:44,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:58:44,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:58:44,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:58:44,629 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:58:44,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:58:44,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061110076] [2024-11-16 04:58:44,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061110076] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 04:58:44,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704223199] [2024-11-16 04:58:44,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:58:44,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 04:58:44,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 04:58:44,634 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 04:58:44,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 04:58:44,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:58:44,738 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-16 04:58:44,743 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 04:58:44,816 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:58:44,817 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 04:58:44,851 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:58:44,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1704223199] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 04:58:44,852 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 04:58:44,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-16 04:58:44,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66335009] [2024-11-16 04:58:44,853 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 04:58:44,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 04:58:44,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:58:44,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 04:58:44,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-16 04:58:44,856 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:58:44,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:58:44,889 INFO L93 Difference]: Finished difference Result 46 states and 60 transitions. [2024-11-16 04:58:44,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 04:58:44,890 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-16 04:58:44,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:58:44,890 INFO L225 Difference]: With dead ends: 46 [2024-11-16 04:58:44,891 INFO L226 Difference]: Without dead ends: 39 [2024-11-16 04:58:44,891 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-16 04:58:44,892 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 26 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 04:58:44,893 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 65 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 04:58:44,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-16 04:58:44,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-11-16 04:58:44,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.2894736842105263) internal successors, (49), 38 states have internal predecessors, (49), 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) [2024-11-16 04:58:44,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 49 transitions. [2024-11-16 04:58:44,903 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 49 transitions. Word has length 15 [2024-11-16 04:58:44,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:58:44,903 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 49 transitions. [2024-11-16 04:58:44,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:58:44,904 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 49 transitions. [2024-11-16 04:58:44,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-16 04:58:44,905 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:58:44,906 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:58:44,924 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 04:58:45,106 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 04:58:45,107 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:58:45,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:58:45,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1712134830, now seen corresponding path program 2 times [2024-11-16 04:58:45,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:58:45,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765810599] [2024-11-16 04:58:45,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:58:45,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:58:45,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:58:45,275 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-16 04:58:45,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:58:45,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765810599] [2024-11-16 04:58:45,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765810599] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 04:58:45,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639262095] [2024-11-16 04:58:45,279 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 04:58:45,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 04:58:45,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 04:58:45,281 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 04:58:45,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 04:58:45,394 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-16 04:58:45,394 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 04:58:45,396 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-16 04:58:45,398 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 04:58:45,432 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-16 04:58:45,433 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 04:58:45,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [639262095] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:58:45,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 04:58:45,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-11-16 04:58:45,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785498709] [2024-11-16 04:58:45,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:58:45,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 04:58:45,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:58:45,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 04:58:45,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-16 04:58:45,438 INFO L87 Difference]: Start difference. First operand 39 states and 49 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:58:45,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:58:45,455 INFO L93 Difference]: Finished difference Result 43 states and 52 transitions. [2024-11-16 04:58:45,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 04:58:45,458 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2024-11-16 04:58:45,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:58:45,459 INFO L225 Difference]: With dead ends: 43 [2024-11-16 04:58:45,459 INFO L226 Difference]: Without dead ends: 39 [2024-11-16 04:58:45,460 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-16 04:58:45,461 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 04:58:45,463 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 51 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 04:58:45,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-16 04:58:45,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-11-16 04:58:45,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.263157894736842) internal successors, (48), 38 states have internal predecessors, (48), 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) [2024-11-16 04:58:45,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 48 transitions. [2024-11-16 04:58:45,471 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 48 transitions. Word has length 33 [2024-11-16 04:58:45,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:58:45,472 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 48 transitions. [2024-11-16 04:58:45,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:58:45,472 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 48 transitions. [2024-11-16 04:58:45,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-16 04:58:45,474 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:58:45,474 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:58:45,492 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-16 04:58:45,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-16 04:58:45,679 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:58:45,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:58:45,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1713117933, now seen corresponding path program 1 times [2024-11-16 04:58:45,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:58:45,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115270136] [2024-11-16 04:58:45,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:58:45,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:58:45,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:58:45,893 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:58:45,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:58:45,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115270136] [2024-11-16 04:58:45,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115270136] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 04:58:45,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347669277] [2024-11-16 04:58:45,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:58:45,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 04:58:45,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 04:58:45,898 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 04:58:45,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 04:58:46,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:58:46,026 INFO L255 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 04:58:46,028 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 04:58:46,117 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:58:46,117 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 04:58:46,254 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:58:46,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347669277] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 04:58:46,255 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 04:58:46,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-16 04:58:46,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534451859] [2024-11-16 04:58:46,255 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 04:58:46,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-16 04:58:46,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:58:46,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-16 04:58:46,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-16 04:58:46,260 INFO L87 Difference]: Start difference. First operand 39 states and 48 transitions. Second operand has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 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) [2024-11-16 04:58:46,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:58:46,324 INFO L93 Difference]: Finished difference Result 88 states and 115 transitions. [2024-11-16 04:58:46,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-16 04:58:46,325 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 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 33 [2024-11-16 04:58:46,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:58:46,326 INFO L225 Difference]: With dead ends: 88 [2024-11-16 04:58:46,327 INFO L226 Difference]: Without dead ends: 81 [2024-11-16 04:58:46,328 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-16 04:58:46,329 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 77 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 04:58:46,331 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 105 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 04:58:46,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-16 04:58:46,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2024-11-16 04:58:46,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.275) internal successors, (102), 80 states have internal predecessors, (102), 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) [2024-11-16 04:58:46,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 102 transitions. [2024-11-16 04:58:46,342 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 102 transitions. Word has length 33 [2024-11-16 04:58:46,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:58:46,342 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 102 transitions. [2024-11-16 04:58:46,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 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) [2024-11-16 04:58:46,343 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 102 transitions. [2024-11-16 04:58:46,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-16 04:58:46,344 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:58:46,344 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:58:46,359 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-16 04:58:46,548 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 04:58:46,549 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:58:46,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:58:46,550 INFO L85 PathProgramCache]: Analyzing trace with hash 530492885, now seen corresponding path program 2 times [2024-11-16 04:58:46,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:58:46,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615795427] [2024-11-16 04:58:46,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:58:46,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:58:46,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:58:46,911 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:58:46,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:58:46,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615795427] [2024-11-16 04:58:46,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615795427] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 04:58:46,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092397766] [2024-11-16 04:58:46,912 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 04:58:46,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 04:58:46,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 04:58:46,915 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 04:58:46,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 04:58:47,096 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 04:58:47,097 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 04:58:47,102 INFO L255 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-16 04:58:47,105 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 04:58:47,225 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:58:47,225 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 04:58:47,526 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:58:47,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092397766] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 04:58:47,527 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 04:58:47,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-11-16 04:58:47,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230113664] [2024-11-16 04:58:47,527 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 04:58:47,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-16 04:58:47,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:58:47,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-16 04:58:47,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-16 04:58:47,530 INFO L87 Difference]: Start difference. First operand 81 states and 102 transitions. Second operand has 25 states, 25 states have (on average 5.56) internal successors, (139), 25 states have internal predecessors, (139), 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) [2024-11-16 04:58:47,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:58:47,621 INFO L93 Difference]: Finished difference Result 172 states and 229 transitions. [2024-11-16 04:58:47,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-16 04:58:47,622 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.56) internal successors, (139), 25 states have internal predecessors, (139), 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 69 [2024-11-16 04:58:47,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:58:47,624 INFO L225 Difference]: With dead ends: 172 [2024-11-16 04:58:47,624 INFO L226 Difference]: Without dead ends: 165 [2024-11-16 04:58:47,625 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-16 04:58:47,625 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 191 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 04:58:47,626 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 197 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 04:58:47,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2024-11-16 04:58:47,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2024-11-16 04:58:47,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 164 states have (on average 1.2804878048780488) internal successors, (210), 164 states have internal predecessors, (210), 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) [2024-11-16 04:58:47,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 210 transitions. [2024-11-16 04:58:47,637 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 210 transitions. Word has length 69 [2024-11-16 04:58:47,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:58:47,637 INFO L471 AbstractCegarLoop]: Abstraction has 165 states and 210 transitions. [2024-11-16 04:58:47,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.56) internal successors, (139), 25 states have internal predecessors, (139), 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) [2024-11-16 04:58:47,638 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 210 transitions. [2024-11-16 04:58:47,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-16 04:58:47,641 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:58:47,642 INFO L215 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:58:47,659 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-16 04:58:47,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 04:58:47,843 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:58:47,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:58:47,843 INFO L85 PathProgramCache]: Analyzing trace with hash 2061621157, now seen corresponding path program 3 times [2024-11-16 04:58:47,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:58:47,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945446257] [2024-11-16 04:58:47,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:58:47,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:58:47,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:58:48,575 INFO L134 CoverageAnalysis]: Checked inductivity of 1430 backedges. 0 proven. 1430 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:58:48,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:58:48,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945446257] [2024-11-16 04:58:48,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945446257] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 04:58:48,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168764589] [2024-11-16 04:58:48,577 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 04:58:48,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 04:58:48,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 04:58:48,579 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 04:58:48,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-16 04:58:48,847 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2024-11-16 04:58:48,847 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 04:58:48,851 INFO L255 TraceCheckSpWp]: Trace formula consists of 825 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-16 04:58:48,856 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 04:58:49,063 INFO L134 CoverageAnalysis]: Checked inductivity of 1430 backedges. 0 proven. 1430 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:58:49,064 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 04:58:49,978 INFO L134 CoverageAnalysis]: Checked inductivity of 1430 backedges. 0 proven. 1430 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:58:49,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1168764589] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 04:58:49,979 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 04:58:49,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2024-11-16 04:58:49,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656831546] [2024-11-16 04:58:49,980 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 04:58:49,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-16 04:58:49,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:58:49,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-16 04:58:49,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-16 04:58:49,984 INFO L87 Difference]: Start difference. First operand 165 states and 210 transitions. Second operand has 49 states, 49 states have (on average 5.775510204081633) internal successors, (283), 49 states have internal predecessors, (283), 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) [2024-11-16 04:58:50,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:58:50,359 INFO L93 Difference]: Finished difference Result 340 states and 457 transitions. [2024-11-16 04:58:50,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-16 04:58:50,360 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 5.775510204081633) internal successors, (283), 49 states have internal predecessors, (283), 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 141 [2024-11-16 04:58:50,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:58:50,363 INFO L225 Difference]: With dead ends: 340 [2024-11-16 04:58:50,363 INFO L226 Difference]: Without dead ends: 333 [2024-11-16 04:58:50,364 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-16 04:58:50,365 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 470 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 04:58:50,365 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [470 Valid, 381 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 04:58:50,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2024-11-16 04:58:50,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 333. [2024-11-16 04:58:50,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 332 states have (on average 1.283132530120482) internal successors, (426), 332 states have internal predecessors, (426), 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) [2024-11-16 04:58:50,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 426 transitions. [2024-11-16 04:58:50,386 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 426 transitions. Word has length 141 [2024-11-16 04:58:50,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:58:50,386 INFO L471 AbstractCegarLoop]: Abstraction has 333 states and 426 transitions. [2024-11-16 04:58:50,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 5.775510204081633) internal successors, (283), 49 states have internal predecessors, (283), 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) [2024-11-16 04:58:50,387 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 426 transitions. [2024-11-16 04:58:50,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2024-11-16 04:58:50,391 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:58:50,391 INFO L215 NwaCegarLoop]: trace histogram [47, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:58:50,411 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-16 04:58:50,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 04:58:50,592 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:58:50,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:58:50,593 INFO L85 PathProgramCache]: Analyzing trace with hash 171457349, now seen corresponding path program 4 times [2024-11-16 04:58:50,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:58:50,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185344081] [2024-11-16 04:58:50,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:58:50,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:58:50,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:58:52,904 INFO L134 CoverageAnalysis]: Checked inductivity of 6302 backedges. 0 proven. 6302 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:58:52,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:58:52,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185344081] [2024-11-16 04:58:52,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185344081] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 04:58:52,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116267592] [2024-11-16 04:58:52,905 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 04:58:52,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 04:58:52,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 04:58:52,908 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 04:58:52,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-16 04:58:53,347 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 04:58:53,348 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 04:58:53,356 INFO L255 TraceCheckSpWp]: Trace formula consists of 1641 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-16 04:58:53,365 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 04:58:53,774 INFO L134 CoverageAnalysis]: Checked inductivity of 6302 backedges. 0 proven. 6302 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:58:53,774 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 04:58:56,647 INFO L134 CoverageAnalysis]: Checked inductivity of 6302 backedges. 0 proven. 6302 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:58:56,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [116267592] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 04:58:56,648 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 04:58:56,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 97 [2024-11-16 04:58:56,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764760641] [2024-11-16 04:58:56,648 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 04:58:56,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2024-11-16 04:58:56,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:58:56,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2024-11-16 04:58:56,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2024-11-16 04:58:56,656 INFO L87 Difference]: Start difference. First operand 333 states and 426 transitions. Second operand has 97 states, 97 states have (on average 5.88659793814433) internal successors, (571), 97 states have internal predecessors, (571), 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) [2024-11-16 04:58:57,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:58:57,693 INFO L93 Difference]: Finished difference Result 676 states and 913 transitions. [2024-11-16 04:58:57,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2024-11-16 04:58:57,694 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 5.88659793814433) internal successors, (571), 97 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 285 [2024-11-16 04:58:57,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:58:57,700 INFO L225 Difference]: With dead ends: 676 [2024-11-16 04:58:57,701 INFO L226 Difference]: Without dead ends: 669 [2024-11-16 04:58:57,703 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 617 GetRequests, 522 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2024-11-16 04:58:57,704 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 1301 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1301 SdHoareTripleChecker+Valid, 708 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 04:58:57,708 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1301 Valid, 708 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 04:58:57,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2024-11-16 04:58:57,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 669. [2024-11-16 04:58:57,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 669 states, 668 states have (on average 1.284431137724551) internal successors, (858), 668 states have internal predecessors, (858), 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) [2024-11-16 04:58:57,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 669 states to 669 states and 858 transitions. [2024-11-16 04:58:57,751 INFO L78 Accepts]: Start accepts. Automaton has 669 states and 858 transitions. Word has length 285 [2024-11-16 04:58:57,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:58:57,751 INFO L471 AbstractCegarLoop]: Abstraction has 669 states and 858 transitions. [2024-11-16 04:58:57,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 5.88659793814433) internal successors, (571), 97 states have internal predecessors, (571), 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) [2024-11-16 04:58:57,752 INFO L276 IsEmpty]: Start isEmpty. Operand 669 states and 858 transitions. [2024-11-16 04:58:57,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 574 [2024-11-16 04:58:57,770 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:58:57,770 INFO L215 NwaCegarLoop]: trace histogram [95, 94, 94, 94, 94, 94, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:58:57,791 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-16 04:58:57,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 04:58:57,971 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:58:57,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:58:57,972 INFO L85 PathProgramCache]: Analyzing trace with hash -488291707, now seen corresponding path program 5 times [2024-11-16 04:58:57,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:58:57,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355647430] [2024-11-16 04:58:57,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:58:57,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:58:58,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:59:05,215 INFO L134 CoverageAnalysis]: Checked inductivity of 26414 backedges. 0 proven. 26414 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:59:05,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:59:05,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355647430] [2024-11-16 04:59:05,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355647430] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 04:59:05,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727862793] [2024-11-16 04:59:05,216 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 04:59:05,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 04:59:05,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 04:59:05,221 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 04:59:05,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-16 04:59:06,223 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 95 check-sat command(s) [2024-11-16 04:59:06,223 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 04:59:06,237 INFO L255 TraceCheckSpWp]: Trace formula consists of 3273 conjuncts, 96 conjuncts are in the unsatisfiable core [2024-11-16 04:59:06,246 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 04:59:06,878 INFO L134 CoverageAnalysis]: Checked inductivity of 26414 backedges. 0 proven. 26414 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:59:06,878 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 04:59:16,115 INFO L134 CoverageAnalysis]: Checked inductivity of 26414 backedges. 0 proven. 26414 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:59:16,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1727862793] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 04:59:16,116 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 04:59:16,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97, 97] total 193 [2024-11-16 04:59:16,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694350978] [2024-11-16 04:59:16,117 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 04:59:16,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 193 states [2024-11-16 04:59:16,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:59:16,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2024-11-16 04:59:16,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2024-11-16 04:59:16,138 INFO L87 Difference]: Start difference. First operand 669 states and 858 transitions. Second operand has 193 states, 193 states have (on average 5.94300518134715) internal successors, (1147), 193 states have internal predecessors, (1147), 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) [2024-11-16 04:59:24,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:59:24,901 INFO L93 Difference]: Finished difference Result 1348 states and 1825 transitions. [2024-11-16 04:59:24,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2024-11-16 04:59:24,902 INFO L78 Accepts]: Start accepts. Automaton has has 193 states, 193 states have (on average 5.94300518134715) internal successors, (1147), 193 states have internal predecessors, (1147), 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 573 [2024-11-16 04:59:24,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:59:24,906 INFO L225 Difference]: With dead ends: 1348 [2024-11-16 04:59:24,907 INFO L226 Difference]: Without dead ends: 1341 [2024-11-16 04:59:24,909 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1241 GetRequests, 1050 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2024-11-16 04:59:24,910 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 2582 mSDsluCounter, 1372 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2582 SdHoareTripleChecker+Valid, 1389 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 04:59:24,910 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2582 Valid, 1389 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 04:59:24,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2024-11-16 04:59:24,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 1341. [2024-11-16 04:59:24,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1341 states, 1340 states have (on average 1.2850746268656716) internal successors, (1722), 1340 states have internal predecessors, (1722), 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) [2024-11-16 04:59:24,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1341 states to 1341 states and 1722 transitions. [2024-11-16 04:59:24,934 INFO L78 Accepts]: Start accepts. Automaton has 1341 states and 1722 transitions. Word has length 573 [2024-11-16 04:59:24,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:59:24,936 INFO L471 AbstractCegarLoop]: Abstraction has 1341 states and 1722 transitions. [2024-11-16 04:59:24,937 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 193 states, 193 states have (on average 5.94300518134715) internal successors, (1147), 193 states have internal predecessors, (1147), 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) [2024-11-16 04:59:24,937 INFO L276 IsEmpty]: Start isEmpty. Operand 1341 states and 1722 transitions. [2024-11-16 04:59:24,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1150 [2024-11-16 04:59:24,972 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:59:24,972 INFO L215 NwaCegarLoop]: trace histogram [191, 190, 190, 190, 190, 190, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:59:24,993 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-16 04:59:25,173 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 04:59:25,173 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:59:25,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:59:25,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1304407803, now seen corresponding path program 6 times [2024-11-16 04:59:25,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:59:25,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435952568] [2024-11-16 04:59:25,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:59:25,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:59:25,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:59:52,355 INFO L134 CoverageAnalysis]: Checked inductivity of 108110 backedges. 0 proven. 108110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:59:52,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:59:52,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435952568] [2024-11-16 04:59:52,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435952568] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 04:59:52,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058473173] [2024-11-16 04:59:52,356 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-16 04:59:52,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 04:59:52,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 04:59:52,358 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 04:59:52,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-16 04:59:54,907 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 191 check-sat command(s) [2024-11-16 04:59:54,907 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 04:59:54,936 INFO L255 TraceCheckSpWp]: Trace formula consists of 6537 conjuncts, 192 conjuncts are in the unsatisfiable core [2024-11-16 04:59:54,954 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 04:59:55,953 INFO L134 CoverageAnalysis]: Checked inductivity of 108110 backedges. 0 proven. 108110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:59:55,953 INFO L311 TraceCheckSpWp]: Computing backward predicates...