/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-52.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-23 07:28:59,510 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-23 07:28:59,572 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-23 07:28:59,574 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-23 07:28:59,575 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-23 07:28:59,588 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-23 07:28:59,589 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-23 07:28:59,590 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-23 07:28:59,590 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-23 07:28:59,590 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-23 07:28:59,591 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-23 07:28:59,591 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-23 07:28:59,591 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-23 07:28:59,591 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-23 07:28:59,592 INFO L153 SettingsManager]: * Use SBE=true [2023-12-23 07:28:59,592 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-23 07:28:59,592 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-23 07:28:59,592 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-23 07:28:59,592 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-23 07:28:59,593 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-23 07:28:59,593 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-23 07:28:59,593 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-23 07:28:59,593 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-23 07:28:59,594 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-23 07:28:59,594 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-23 07:28:59,594 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-23 07:28:59,594 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-23 07:28:59,594 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-23 07:28:59,594 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-23 07:28:59,595 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-23 07:28:59,595 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-23 07:28:59,595 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-23 07:28:59,595 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-23 07:28:59,595 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-23 07:28:59,595 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 07:28:59,595 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-23 07:28:59,596 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-23 07:28:59,596 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-23 07:28:59,596 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-23 07:28:59,596 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-23 07:28:59,596 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-23 07:28:59,596 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-23 07:28:59,596 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-23 07:28:59,596 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-23 07:28:59,596 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-23 07:28:59,597 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-23 07:28:59,597 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-23 07:28:59,744 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-23 07:28:59,760 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-23 07:28:59,761 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-23 07:28:59,762 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-23 07:28:59,762 INFO L274 PluginConnector]: CDTParser initialized [2023-12-23 07:28:59,764 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-52.i [2023-12-23 07:29:00,693 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-23 07:29:00,883 INFO L384 CDTParser]: Found 1 translation units. [2023-12-23 07:29:00,883 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-52.i [2023-12-23 07:29:00,893 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b182a4b9/e6ab463acf9440eabeb4878ae4a13410/FLAG08b28a1fa [2023-12-23 07:29:01,305 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b182a4b9/e6ab463acf9440eabeb4878ae4a13410 [2023-12-23 07:29:01,307 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-23 07:29:01,308 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-23 07:29:01,309 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-23 07:29:01,309 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-23 07:29:01,312 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-23 07:29:01,313 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:29:01" (1/1) ... [2023-12-23 07:29:01,313 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5edf9e0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:29:01, skipping insertion in model container [2023-12-23 07:29:01,313 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:29:01" (1/1) ... [2023-12-23 07:29:01,340 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-23 07:29:01,429 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-52.i[919,932] [2023-12-23 07:29:01,472 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 07:29:01,482 INFO L202 MainTranslator]: Completed pre-run [2023-12-23 07:29:01,493 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-52.i[919,932] [2023-12-23 07:29:01,517 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 07:29:01,531 INFO L206 MainTranslator]: Completed translation [2023-12-23 07:29:01,531 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:29:01 WrapperNode [2023-12-23 07:29:01,531 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-23 07:29:01,532 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-23 07:29:01,532 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-23 07:29:01,532 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-23 07:29:01,542 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:29:01" (1/1) ... [2023-12-23 07:29:01,555 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:29:01" (1/1) ... [2023-12-23 07:29:01,574 INFO L138 Inliner]: procedures = 27, calls = 30, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 167 [2023-12-23 07:29:01,575 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-23 07:29:01,575 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-23 07:29:01,575 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-23 07:29:01,576 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-23 07:29:01,583 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:29:01" (1/1) ... [2023-12-23 07:29:01,583 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:29:01" (1/1) ... [2023-12-23 07:29:01,586 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:29:01" (1/1) ... [2023-12-23 07:29:01,596 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]. [2023-12-23 07:29:01,596 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:29:01" (1/1) ... [2023-12-23 07:29:01,596 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:29:01" (1/1) ... [2023-12-23 07:29:01,606 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:29:01" (1/1) ... [2023-12-23 07:29:01,609 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:29:01" (1/1) ... [2023-12-23 07:29:01,611 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:29:01" (1/1) ... [2023-12-23 07:29:01,613 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:29:01" (1/1) ... [2023-12-23 07:29:01,615 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-23 07:29:01,633 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-23 07:29:01,633 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-23 07:29:01,633 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-23 07:29:01,636 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:29:01" (1/1) ... [2023-12-23 07:29:01,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 07:29:01,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-23 07:29:01,658 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) [2023-12-23 07:29:01,663 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 [2023-12-23 07:29:01,688 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-23 07:29:01,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-23 07:29:01,688 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-23 07:29:01,688 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-23 07:29:01,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-23 07:29:01,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-23 07:29:01,782 INFO L241 CfgBuilder]: Building ICFG [2023-12-23 07:29:01,785 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-23 07:29:02,529 INFO L282 CfgBuilder]: Performing block encoding [2023-12-23 07:29:02,566 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-23 07:29:02,567 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-23 07:29:02,567 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:29:02 BoogieIcfgContainer [2023-12-23 07:29:02,567 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-23 07:29:02,569 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-23 07:29:02,569 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-23 07:29:02,571 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-23 07:29:02,571 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 07:29:01" (1/3) ... [2023-12-23 07:29:02,572 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@495606a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:29:02, skipping insertion in model container [2023-12-23 07:29:02,572 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:29:01" (2/3) ... [2023-12-23 07:29:02,572 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@495606a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:29:02, skipping insertion in model container [2023-12-23 07:29:02,572 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:29:02" (3/3) ... [2023-12-23 07:29:02,573 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pe-ci_file-52.i [2023-12-23 07:29:02,584 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-23 07:29:02,585 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-23 07:29:02,619 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-23 07:29:02,624 INFO L357 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, mHoare=true, 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;@21712062, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-23 07:29:02,625 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-23 07:29:02,629 INFO L276 IsEmpty]: Start isEmpty. Operand has 66 states, 46 states have (on average 1.5217391304347827) internal successors, (70), 47 states have internal predecessors, (70), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-12-23 07:29:02,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-23 07:29:02,640 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 07:29:02,641 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 07:29:02,641 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 07:29:02,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 07:29:02,648 INFO L85 PathProgramCache]: Analyzing trace with hash -246084046, now seen corresponding path program 1 times [2023-12-23 07:29:02,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 07:29:02,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2003119999] [2023-12-23 07:29:02,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 07:29:02,660 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 07:29:02,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 07:29:02,662 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 07:29:02,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-23 07:29:02,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 07:29:02,901 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-23 07:29:02,907 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 07:29:02,945 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 252 proven. 0 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2023-12-23 07:29:02,945 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 07:29:02,948 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 07:29:02,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2003119999] [2023-12-23 07:29:02,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2003119999] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 07:29:02,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 07:29:02,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-23 07:29:02,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113327298] [2023-12-23 07:29:02,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 07:29:02,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-23 07:29:02,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 07:29:02,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-23 07:29:02,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-23 07:29:02,977 INFO L87 Difference]: Start difference. First operand has 66 states, 46 states have (on average 1.5217391304347827) internal successors, (70), 47 states have internal predecessors, (70), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-23 07:29:03,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 07:29:03,018 INFO L93 Difference]: Finished difference Result 129 states and 223 transitions. [2023-12-23 07:29:03,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-23 07:29:03,023 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 118 [2023-12-23 07:29:03,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 07:29:03,028 INFO L225 Difference]: With dead ends: 129 [2023-12-23 07:29:03,028 INFO L226 Difference]: Without dead ends: 64 [2023-12-23 07:29:03,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-23 07:29:03,034 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-23 07:29:03,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 96 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-23 07:29:03,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-12-23 07:29:03,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2023-12-23 07:29:03,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 45 states have (on average 1.4444444444444444) internal successors, (65), 45 states have internal predecessors, (65), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-12-23 07:29:03,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 99 transitions. [2023-12-23 07:29:03,086 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 99 transitions. Word has length 118 [2023-12-23 07:29:03,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 07:29:03,086 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 99 transitions. [2023-12-23 07:29:03,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-23 07:29:03,087 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 99 transitions. [2023-12-23 07:29:03,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-23 07:29:03,089 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 07:29:03,089 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 07:29:03,101 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-23 07:29:03,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 07:29:03,296 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 07:29:03,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 07:29:03,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1524881656, now seen corresponding path program 1 times [2023-12-23 07:29:03,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 07:29:03,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1314931172] [2023-12-23 07:29:03,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 07:29:03,298 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 07:29:03,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 07:29:03,299 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 07:29:03,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-23 07:29:03,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 07:29:03,491 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-23 07:29:03,495 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 07:29:03,661 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-23 07:29:03,661 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 07:29:03,662 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 07:29:03,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1314931172] [2023-12-23 07:29:03,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1314931172] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 07:29:03,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 07:29:03,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-23 07:29:03,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049760012] [2023-12-23 07:29:03,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 07:29:03,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-23 07:29:03,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 07:29:03,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-23 07:29:03,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-23 07:29:03,664 INFO L87 Difference]: Start difference. First operand 64 states and 99 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-23 07:29:04,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 07:29:04,079 INFO L93 Difference]: Finished difference Result 191 states and 296 transitions. [2023-12-23 07:29:04,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-23 07:29:04,084 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 118 [2023-12-23 07:29:04,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 07:29:04,085 INFO L225 Difference]: With dead ends: 191 [2023-12-23 07:29:04,085 INFO L226 Difference]: Without dead ends: 128 [2023-12-23 07:29:04,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-23 07:29:04,087 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 107 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-23 07:29:04,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 292 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-23 07:29:04,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2023-12-23 07:29:04,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 97. [2023-12-23 07:29:04,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 60 states have (on average 1.3333333333333333) internal successors, (80), 60 states have internal predecessors, (80), 34 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-23 07:29:04,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 148 transitions. [2023-12-23 07:29:04,115 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 148 transitions. Word has length 118 [2023-12-23 07:29:04,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 07:29:04,117 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 148 transitions. [2023-12-23 07:29:04,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-23 07:29:04,118 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 148 transitions. [2023-12-23 07:29:04,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-23 07:29:04,121 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 07:29:04,121 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 07:29:04,128 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-23 07:29:04,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 07:29:04,329 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 07:29:04,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 07:29:04,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1102179830, now seen corresponding path program 1 times [2023-12-23 07:29:04,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 07:29:04,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [208294630] [2023-12-23 07:29:04,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 07:29:04,331 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 07:29:04,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 07:29:04,335 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 07:29:04,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-23 07:29:04,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 07:29:04,526 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-23 07:29:04,529 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 07:29:04,644 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-23 07:29:04,644 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 07:29:04,644 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 07:29:04,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [208294630] [2023-12-23 07:29:04,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [208294630] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 07:29:04,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 07:29:04,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-23 07:29:04,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400587119] [2023-12-23 07:29:04,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 07:29:04,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-23 07:29:04,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 07:29:04,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-23 07:29:04,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-23 07:29:04,646 INFO L87 Difference]: Start difference. First operand 97 states and 148 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-23 07:29:05,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 07:29:05,463 INFO L93 Difference]: Finished difference Result 220 states and 337 transitions. [2023-12-23 07:29:05,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-23 07:29:05,464 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 118 [2023-12-23 07:29:05,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 07:29:05,466 INFO L225 Difference]: With dead ends: 220 [2023-12-23 07:29:05,466 INFO L226 Difference]: Without dead ends: 157 [2023-12-23 07:29:05,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-23 07:29:05,467 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 195 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-23 07:29:05,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 277 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-23 07:29:05,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2023-12-23 07:29:05,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 107. [2023-12-23 07:29:05,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 70 states have (on average 1.3428571428571427) internal successors, (94), 70 states have internal predecessors, (94), 34 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-23 07:29:05,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 162 transitions. [2023-12-23 07:29:05,486 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 162 transitions. Word has length 118 [2023-12-23 07:29:05,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 07:29:05,487 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 162 transitions. [2023-12-23 07:29:05,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-23 07:29:05,487 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 162 transitions. [2023-12-23 07:29:05,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-23 07:29:05,490 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 07:29:05,490 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 07:29:05,497 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-23 07:29:05,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 07:29:05,697 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 07:29:05,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 07:29:05,698 INFO L85 PathProgramCache]: Analyzing trace with hash 709152820, now seen corresponding path program 1 times [2023-12-23 07:29:05,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 07:29:05,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1808328636] [2023-12-23 07:29:05,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 07:29:05,699 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 07:29:05,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 07:29:05,700 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 07:29:05,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-23 07:29:05,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 07:29:05,896 INFO L262 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-23 07:29:05,899 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 07:29:06,153 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-23 07:29:06,153 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 07:29:06,153 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 07:29:06,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1808328636] [2023-12-23 07:29:06,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1808328636] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 07:29:06,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 07:29:06,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-23 07:29:06,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12275864] [2023-12-23 07:29:06,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 07:29:06,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-23 07:29:06,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 07:29:06,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-23 07:29:06,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-23 07:29:06,156 INFO L87 Difference]: Start difference. First operand 107 states and 162 transitions. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 5 states have internal predecessors, (36), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-23 07:29:08,317 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 07:29:09,836 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 07:29:10,994 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 07:29:12,606 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 07:29:14,033 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 07:29:15,326 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 07:29:16,825 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 07:29:18,109 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 07:29:19,471 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 07:29:20,947 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 07:29:22,431 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 07:29:23,751 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 07:29:25,230 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 07:29:26,637 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 07:29:28,304 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 07:29:29,778 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 07:29:30,954 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 07:29:32,742 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 07:29:34,307 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 07:29:35,854 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 07:29:37,357 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 07:29:38,945 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 07:29:40,815 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 07:29:42,048 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 07:29:43,613 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 07:29:45,000 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 07:29:46,386 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 07:29:47,969 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 07:29:49,645 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 07:29:51,050 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 07:29:53,141 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 07:29:56,130 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.98s for a HTC check with result VALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 07:29:59,030 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.89s for a HTC check with result VALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 07:30:02,443 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.41s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 07:30:05,312 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.81s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 07:30:07,101 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result VALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 07:30:08,768 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result VALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 07:30:09,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 07:30:09,064 INFO L93 Difference]: Finished difference Result 254 states and 387 transitions. [2023-12-23 07:30:09,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-23 07:30:09,080 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 5 states have internal predecessors, (36), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 118 [2023-12-23 07:30:09,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 07:30:09,081 INFO L225 Difference]: With dead ends: 254 [2023-12-23 07:30:09,081 INFO L226 Difference]: Without dead ends: 181 [2023-12-23 07:30:09,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-23 07:30:09,083 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 169 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 62.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 62.8s IncrementalHoareTripleChecker+Time [2023-12-23 07:30:09,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 416 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 62.8s Time] [2023-12-23 07:30:09,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2023-12-23 07:30:09,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 129. [2023-12-23 07:30:09,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 92 states have (on average 1.3695652173913044) internal successors, (126), 92 states have internal predecessors, (126), 34 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-23 07:30:09,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 194 transitions. [2023-12-23 07:30:09,106 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 194 transitions. Word has length 118 [2023-12-23 07:30:09,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 07:30:09,106 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 194 transitions. [2023-12-23 07:30:09,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 5 states have internal predecessors, (36), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-12-23 07:30:09,106 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 194 transitions. [2023-12-23 07:30:09,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-23 07:30:09,109 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 07:30:09,109 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 07:30:09,121 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-23 07:30:09,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 07:30:09,315 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 07:30:09,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 07:30:09,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1360481121, now seen corresponding path program 1 times [2023-12-23 07:30:09,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 07:30:09,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [306381962] [2023-12-23 07:30:09,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 07:30:09,316 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 07:30:09,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 07:30:09,317 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 07:30:09,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-23 07:30:09,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 07:30:09,486 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-23 07:30:09,488 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 07:30:09,575 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 288 proven. 24 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2023-12-23 07:30:09,575 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 07:30:09,710 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 24 proven. 24 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-12-23 07:30:09,710 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 07:30:09,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [306381962] [2023-12-23 07:30:09,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [306381962] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 07:30:09,711 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 07:30:09,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-23 07:30:09,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719720508] [2023-12-23 07:30:09,711 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 07:30:09,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-23 07:30:09,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 07:30:09,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-23 07:30:09,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-23 07:30:09,715 INFO L87 Difference]: Start difference. First operand 129 states and 194 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2023-12-23 07:30:10,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 07:30:10,049 INFO L93 Difference]: Finished difference Result 214 states and 316 transitions. [2023-12-23 07:30:10,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-23 07:30:10,050 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 119 [2023-12-23 07:30:10,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 07:30:10,052 INFO L225 Difference]: With dead ends: 214 [2023-12-23 07:30:10,052 INFO L226 Difference]: Without dead ends: 141 [2023-12-23 07:30:10,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 230 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-23 07:30:10,056 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 51 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-23 07:30:10,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 223 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-23 07:30:10,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2023-12-23 07:30:10,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 137. [2023-12-23 07:30:10,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 98 states have (on average 1.336734693877551) internal successors, (131), 98 states have internal predecessors, (131), 34 states have call successors, (34), 4 states have call predecessors, (34), 4 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-23 07:30:10,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 199 transitions. [2023-12-23 07:30:10,092 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 199 transitions. Word has length 119 [2023-12-23 07:30:10,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 07:30:10,093 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 199 transitions. [2023-12-23 07:30:10,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2023-12-23 07:30:10,093 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 199 transitions. [2023-12-23 07:30:10,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-23 07:30:10,095 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 07:30:10,095 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 07:30:10,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-23 07:30:10,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 07:30:10,305 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 07:30:10,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 07:30:10,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1992879999, now seen corresponding path program 1 times [2023-12-23 07:30:10,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 07:30:10,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1113693076] [2023-12-23 07:30:10,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 07:30:10,306 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 07:30:10,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 07:30:10,307 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 07:30:10,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-23 07:30:10,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 07:30:10,541 INFO L262 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-23 07:30:10,543 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 07:30:10,840 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 202 proven. 54 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2023-12-23 07:30:10,840 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 07:30:11,087 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 36 proven. 57 refuted. 0 times theorem prover too weak. 451 trivial. 0 not checked. [2023-12-23 07:30:11,087 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 07:30:11,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1113693076] [2023-12-23 07:30:11,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1113693076] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 07:30:11,087 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 07:30:11,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2023-12-23 07:30:11,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810228294] [2023-12-23 07:30:11,088 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 07:30:11,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-23 07:30:11,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 07:30:11,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-23 07:30:11,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2023-12-23 07:30:11,089 INFO L87 Difference]: Start difference. First operand 137 states and 199 transitions. Second operand has 15 states, 15 states have (on average 5.066666666666666) internal successors, (76), 15 states have internal predecessors, (76), 4 states have call successors, (33), 3 states have call predecessors, (33), 7 states have return successors, (34), 3 states have call predecessors, (34), 4 states have call successors, (34) [2023-12-23 07:30:12,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 07:30:12,150 INFO L93 Difference]: Finished difference Result 246 states and 339 transitions. [2023-12-23 07:30:12,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-23 07:30:12,151 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.066666666666666) internal successors, (76), 15 states have internal predecessors, (76), 4 states have call successors, (33), 3 states have call predecessors, (33), 7 states have return successors, (34), 3 states have call predecessors, (34), 4 states have call successors, (34) Word has length 120 [2023-12-23 07:30:12,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 07:30:12,154 INFO L225 Difference]: With dead ends: 246 [2023-12-23 07:30:12,154 INFO L226 Difference]: Without dead ends: 169 [2023-12-23 07:30:12,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 225 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=210, Invalid=440, Unknown=0, NotChecked=0, Total=650 [2023-12-23 07:30:12,156 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 239 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-23 07:30:12,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 220 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-23 07:30:12,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2023-12-23 07:30:12,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 156. [2023-12-23 07:30:12,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 111 states have (on average 1.2612612612612613) internal successors, (140), 111 states have internal predecessors, (140), 34 states have call successors, (34), 10 states have call predecessors, (34), 10 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-23 07:30:12,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 208 transitions. [2023-12-23 07:30:12,180 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 208 transitions. Word has length 120 [2023-12-23 07:30:12,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 07:30:12,181 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 208 transitions. [2023-12-23 07:30:12,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.066666666666666) internal successors, (76), 15 states have internal predecessors, (76), 4 states have call successors, (33), 3 states have call predecessors, (33), 7 states have return successors, (34), 3 states have call predecessors, (34), 4 states have call successors, (34) [2023-12-23 07:30:12,181 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 208 transitions. [2023-12-23 07:30:12,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-23 07:30:12,182 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 07:30:12,182 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 07:30:12,192 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-23 07:30:12,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 07:30:12,391 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 07:30:12,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 07:30:12,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1183533373, now seen corresponding path program 1 times [2023-12-23 07:30:12,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 07:30:12,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2075582070] [2023-12-23 07:30:12,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 07:30:12,392 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 07:30:12,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 07:30:12,393 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 07:30:12,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-23 07:30:12,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 07:30:12,621 INFO L262 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-23 07:30:12,625 INFO L285 TraceCheckSpWp]: Computing forward predicates...