/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/combinations/Problem05_label44+token_ring.05.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 21:55:30,862 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 21:55:30,909 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-21 21:55:30,912 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 21:55:30,913 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 21:55:30,930 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 21:55:30,931 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 21:55:30,931 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 21:55:30,931 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 21:55:30,932 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 21:55:30,932 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 21:55:30,932 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 21:55:30,933 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 21:55:30,933 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 21:55:30,933 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 21:55:30,934 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 21:55:30,934 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 21:55:30,934 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 21:55:30,935 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 21:55:30,935 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 21:55:30,935 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 21:55:30,936 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 21:55:30,936 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 21:55:30,937 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-21 21:55:30,937 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-21 21:55:30,937 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 21:55:30,937 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-21 21:55:30,938 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 21:55:30,938 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 21:55:30,938 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 21:55:30,939 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 21:55:30,939 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 21:55:30,939 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 21:55:30,940 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 21:55:30,940 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 21:55:30,940 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 21:55:30,941 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 21:55:30,941 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 21:55:30,941 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-21 21:55:30,942 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-21 21:55:30,942 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 21:55:30,942 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 21:55:30,943 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 21:55:30,943 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 21:55:30,943 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 21:55:30,943 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-21 21:55:30,944 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-21 21:55:31,122 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 21:55:31,138 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 21:55:31,140 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 21:55:31,141 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 21:55:31,141 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 21:55:31,142 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label44+token_ring.05.cil-1.c [2023-12-21 21:55:32,279 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 21:55:32,834 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 21:55:32,834 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label44+token_ring.05.cil-1.c [2023-12-21 21:55:32,895 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/481208fb1/4ce999cc904940ddbad810b6cdb14c95/FLAG61ed4d4a0 [2023-12-21 21:55:32,910 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/481208fb1/4ce999cc904940ddbad810b6cdb14c95 [2023-12-21 21:55:32,913 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 21:55:32,915 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 21:55:32,915 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 21:55:32,916 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 21:55:32,923 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 21:55:32,923 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 09:55:32" (1/1) ... [2023-12-21 21:55:32,924 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49aca7e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:55:32, skipping insertion in model container [2023-12-21 21:55:32,925 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 09:55:32" (1/1) ... [2023-12-21 21:55:33,125 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 21:55:34,778 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label44+token_ring.05.cil-1.c[377340,377353] [2023-12-21 21:55:34,806 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label44+token_ring.05.cil-1.c[383339,383352] [2023-12-21 21:55:35,025 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 21:55:35,040 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 21:55:35,830 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label44+token_ring.05.cil-1.c[377340,377353] [2023-12-21 21:55:35,839 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label44+token_ring.05.cil-1.c[383339,383352] [2023-12-21 21:55:35,861 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 21:55:35,921 INFO L206 MainTranslator]: Completed translation [2023-12-21 21:55:35,923 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:55:35 WrapperNode [2023-12-21 21:55:35,923 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 21:55:35,925 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 21:55:35,925 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 21:55:35,925 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 21:55:35,931 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:55:35" (1/1) ... [2023-12-21 21:55:36,028 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:55:35" (1/1) ... [2023-12-21 21:55:36,358 INFO L138 Inliner]: procedures = 55, calls = 56, calls flagged for inlining = 32, calls inlined = 32, statements flattened = 12785 [2023-12-21 21:55:36,358 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 21:55:36,359 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 21:55:36,359 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 21:55:36,359 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 21:55:36,369 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:55:35" (1/1) ... [2023-12-21 21:55:36,369 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:55:35" (1/1) ... [2023-12-21 21:55:36,508 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:55:35" (1/1) ... [2023-12-21 21:55:36,567 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]. [2023-12-21 21:55:36,568 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:55:35" (1/1) ... [2023-12-21 21:55:36,568 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:55:35" (1/1) ... [2023-12-21 21:55:36,744 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:55:35" (1/1) ... [2023-12-21 21:55:36,786 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:55:35" (1/1) ... [2023-12-21 21:55:36,817 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:55:35" (1/1) ... [2023-12-21 21:55:36,835 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:55:35" (1/1) ... [2023-12-21 21:55:36,898 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 21:55:36,899 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 21:55:36,899 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 21:55:36,899 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 21:55:36,900 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:55:35" (1/1) ... [2023-12-21 21:55:36,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 21:55:36,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 21:55:36,929 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) [2023-12-21 21:55:36,935 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 [2023-12-21 21:55:36,951 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 21:55:36,951 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-12-21 21:55:36,951 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-12-21 21:55:36,951 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-21 21:55:36,951 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-21 21:55:36,951 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-12-21 21:55:36,951 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-12-21 21:55:36,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-21 21:55:36,951 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-12-21 21:55:36,951 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-12-21 21:55:36,952 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-12-21 21:55:36,952 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-12-21 21:55:36,952 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-12-21 21:55:36,952 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-12-21 21:55:36,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 21:55:36,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 21:55:37,050 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 21:55:37,052 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 21:55:45,677 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 21:55:45,802 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 21:55:45,803 INFO L309 CfgBuilder]: Removed 9 assume(true) statements. [2023-12-21 21:55:45,804 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 09:55:45 BoogieIcfgContainer [2023-12-21 21:55:45,804 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 21:55:45,810 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 21:55:45,810 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 21:55:45,813 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 21:55:45,813 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 09:55:32" (1/3) ... [2023-12-21 21:55:45,814 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e7dfb1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 09:55:45, skipping insertion in model container [2023-12-21 21:55:45,814 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:55:35" (2/3) ... [2023-12-21 21:55:45,815 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e7dfb1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 09:55:45, skipping insertion in model container [2023-12-21 21:55:45,815 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 09:55:45" (3/3) ... [2023-12-21 21:55:45,816 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label44+token_ring.05.cil-1.c [2023-12-21 21:55:45,833 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 21:55:45,833 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-21 21:55:45,918 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 21:55:45,923 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;@3ddc9077, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 21:55:45,923 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-21 21:55:45,936 INFO L276 IsEmpty]: Start isEmpty. Operand has 2310 states, 2282 states have (on average 1.8825591586327783) internal successors, (4296), 2285 states have internal predecessors, (4296), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-21 21:55:45,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-21 21:55:45,958 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:55:45,959 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:55:45,960 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:55:45,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:55:45,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1489029610, now seen corresponding path program 1 times [2023-12-21 21:55:45,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:55:45,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [592850350] [2023-12-21 21:55:45,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:55:45,977 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 [2023-12-21 21:55:45,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:55:45,980 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) [2023-12-21 21:55:45,989 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 [2023-12-21 21:55:46,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:55:46,158 INFO L262 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 21:55:46,164 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:55:46,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:55:46,225 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:55:46,225 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:55:46,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [592850350] [2023-12-21 21:55:46,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [592850350] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:55:46,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:55:46,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 21:55:46,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370869456] [2023-12-21 21:55:46,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:55:46,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 21:55:46,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:55:46,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 21:55:46,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:55:46,271 INFO L87 Difference]: Start difference. First operand has 2310 states, 2282 states have (on average 1.8825591586327783) internal successors, (4296), 2285 states have internal predecessors, (4296), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:55:46,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:55:46,442 INFO L93 Difference]: Finished difference Result 4614 states and 8655 transitions. [2023-12-21 21:55:46,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 21:55:46,445 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2023-12-21 21:55:46,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:55:46,473 INFO L225 Difference]: With dead ends: 4614 [2023-12-21 21:55:46,473 INFO L226 Difference]: Without dead ends: 2306 [2023-12-21 21:55:46,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:55:46,482 INFO L413 NwaCegarLoop]: 4227 mSDtfsCounter, 285 mSDsluCounter, 3959 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 8186 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 21:55:46,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 8186 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 21:55:46,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2306 states. [2023-12-21 21:55:46,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2306 to 2306. [2023-12-21 21:55:46,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2306 states, 2279 states have (on average 1.8473014480035104) internal successors, (4210), 2281 states have internal predecessors, (4210), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-21 21:55:46,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2306 states to 2306 states and 4248 transitions. [2023-12-21 21:55:46,618 INFO L78 Accepts]: Start accepts. Automaton has 2306 states and 4248 transitions. Word has length 91 [2023-12-21 21:55:46,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:55:46,619 INFO L495 AbstractCegarLoop]: Abstraction has 2306 states and 4248 transitions. [2023-12-21 21:55:46,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:55:46,619 INFO L276 IsEmpty]: Start isEmpty. Operand 2306 states and 4248 transitions. [2023-12-21 21:55:46,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-21 21:55:46,622 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:55:46,623 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:55:46,628 INFO L552 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)] Ended with exit code 0 [2023-12-21 21:55:46,828 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 [2023-12-21 21:55:46,828 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:55:46,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:55:46,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1239179736, now seen corresponding path program 1 times [2023-12-21 21:55:46,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:55:46,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1009985860] [2023-12-21 21:55:46,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:55:46,830 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 [2023-12-21 21:55:46,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:55:46,832 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) [2023-12-21 21:55:46,834 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 [2023-12-21 21:55:46,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:55:46,939 INFO L262 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:55:46,943 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:55:47,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:55:47,041 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:55:47,041 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:55:47,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1009985860] [2023-12-21 21:55:47,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1009985860] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:55:47,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:55:47,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:55:47,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468228976] [2023-12-21 21:55:47,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:55:47,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:55:47,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:55:47,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:55:47,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:55:47,044 INFO L87 Difference]: Start difference. First operand 2306 states and 4248 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:55:47,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:55:47,584 INFO L93 Difference]: Finished difference Result 2675 states and 4835 transitions. [2023-12-21 21:55:47,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 21:55:47,585 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2023-12-21 21:55:47,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:55:47,598 INFO L225 Difference]: With dead ends: 2675 [2023-12-21 21:55:47,598 INFO L226 Difference]: Without dead ends: 2501 [2023-12-21 21:55:47,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 21:55:47,601 INFO L413 NwaCegarLoop]: 4167 mSDtfsCounter, 4483 mSDsluCounter, 8431 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4496 SdHoareTripleChecker+Valid, 12598 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 21:55:47,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4496 Valid, 12598 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 21:55:47,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2501 states. [2023-12-21 21:55:47,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2501 to 2486. [2023-12-21 21:55:47,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2486 states, 2438 states have (on average 1.8314191960623463) internal successors, (4465), 2441 states have internal predecessors, (4465), 33 states have call successors, (33), 12 states have call predecessors, (33), 13 states have return successors, (34), 33 states have call predecessors, (34), 33 states have call successors, (34) [2023-12-21 21:55:47,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2486 states to 2486 states and 4532 transitions. [2023-12-21 21:55:47,660 INFO L78 Accepts]: Start accepts. Automaton has 2486 states and 4532 transitions. Word has length 91 [2023-12-21 21:55:47,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:55:47,661 INFO L495 AbstractCegarLoop]: Abstraction has 2486 states and 4532 transitions. [2023-12-21 21:55:47,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:55:47,661 INFO L276 IsEmpty]: Start isEmpty. Operand 2486 states and 4532 transitions. [2023-12-21 21:55:47,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-21 21:55:47,662 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:55:47,662 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:55:47,671 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 [2023-12-21 21:55:47,866 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 [2023-12-21 21:55:47,867 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:55:47,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:55:47,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1642518564, now seen corresponding path program 1 times [2023-12-21 21:55:47,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:55:47,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1837040230] [2023-12-21 21:55:47,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:55:47,869 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 [2023-12-21 21:55:47,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:55:47,870 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) [2023-12-21 21:55:47,874 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 [2023-12-21 21:55:47,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:55:47,973 INFO L262 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:55:47,976 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:55:48,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:55:48,042 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:55:48,042 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:55:48,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1837040230] [2023-12-21 21:55:48,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1837040230] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:55:48,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:55:48,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:55:48,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890568665] [2023-12-21 21:55:48,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:55:48,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:55:48,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:55:48,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:55:48,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:55:48,045 INFO L87 Difference]: Start difference. First operand 2486 states and 4532 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:55:48,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:55:48,407 INFO L93 Difference]: Finished difference Result 2840 states and 5095 transitions. [2023-12-21 21:55:48,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:55:48,408 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2023-12-21 21:55:48,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:55:48,419 INFO L225 Difference]: With dead ends: 2840 [2023-12-21 21:55:48,419 INFO L226 Difference]: Without dead ends: 2486 [2023-12-21 21:55:48,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 21:55:48,423 INFO L413 NwaCegarLoop]: 4135 mSDtfsCounter, 4331 mSDsluCounter, 8188 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4344 SdHoareTripleChecker+Valid, 12323 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 21:55:48,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4344 Valid, 12323 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 21:55:48,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2486 states. [2023-12-21 21:55:48,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2486 to 2486. [2023-12-21 21:55:48,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2486 states, 2438 states have (on average 1.8285479901558654) internal successors, (4458), 2441 states have internal predecessors, (4458), 33 states have call successors, (33), 12 states have call predecessors, (33), 13 states have return successors, (34), 33 states have call predecessors, (34), 33 states have call successors, (34) [2023-12-21 21:55:48,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2486 states to 2486 states and 4525 transitions. [2023-12-21 21:55:48,497 INFO L78 Accepts]: Start accepts. Automaton has 2486 states and 4525 transitions. Word has length 91 [2023-12-21 21:55:48,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:55:48,497 INFO L495 AbstractCegarLoop]: Abstraction has 2486 states and 4525 transitions. [2023-12-21 21:55:48,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:55:48,498 INFO L276 IsEmpty]: Start isEmpty. Operand 2486 states and 4525 transitions. [2023-12-21 21:55:48,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-21 21:55:48,499 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:55:48,499 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:55:48,508 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 [2023-12-21 21:55:48,704 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 [2023-12-21 21:55:48,704 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:55:48,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:55:48,705 INFO L85 PathProgramCache]: Analyzing trace with hash 65638744, now seen corresponding path program 1 times [2023-12-21 21:55:48,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:55:48,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [26216208] [2023-12-21 21:55:48,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:55:48,706 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 [2023-12-21 21:55:48,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:55:48,707 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) [2023-12-21 21:55:48,710 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 [2023-12-21 21:55:48,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:55:48,807 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:55:48,809 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:55:48,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:55:48,865 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:55:48,865 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:55:48,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [26216208] [2023-12-21 21:55:48,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [26216208] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:55:48,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:55:48,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:55:48,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866836690] [2023-12-21 21:55:48,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:55:48,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:55:48,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:55:48,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:55:48,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:55:48,870 INFO L87 Difference]: Start difference. First operand 2486 states and 4525 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:55:49,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:55:49,198 INFO L93 Difference]: Finished difference Result 2840 states and 5081 transitions. [2023-12-21 21:55:49,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:55:49,199 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2023-12-21 21:55:49,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:55:49,209 INFO L225 Difference]: With dead ends: 2840 [2023-12-21 21:55:49,209 INFO L226 Difference]: Without dead ends: 2486 [2023-12-21 21:55:49,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 21:55:49,211 INFO L413 NwaCegarLoop]: 4132 mSDtfsCounter, 4324 mSDsluCounter, 8184 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4337 SdHoareTripleChecker+Valid, 12316 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 21:55:49,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4337 Valid, 12316 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 21:55:49,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2486 states. [2023-12-21 21:55:49,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2486 to 2486. [2023-12-21 21:55:49,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2486 states, 2438 states have (on average 1.8256767842493848) internal successors, (4451), 2441 states have internal predecessors, (4451), 33 states have call successors, (33), 12 states have call predecessors, (33), 13 states have return successors, (34), 33 states have call predecessors, (34), 33 states have call successors, (34) [2023-12-21 21:55:49,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2486 states to 2486 states and 4518 transitions. [2023-12-21 21:55:49,287 INFO L78 Accepts]: Start accepts. Automaton has 2486 states and 4518 transitions. Word has length 91 [2023-12-21 21:55:49,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:55:49,288 INFO L495 AbstractCegarLoop]: Abstraction has 2486 states and 4518 transitions. [2023-12-21 21:55:49,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:55:49,288 INFO L276 IsEmpty]: Start isEmpty. Operand 2486 states and 4518 transitions. [2023-12-21 21:55:49,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-21 21:55:49,293 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:55:49,293 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:55:49,301 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 [2023-12-21 21:55:49,498 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 [2023-12-21 21:55:49,499 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:55:49,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:55:49,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1014901204, now seen corresponding path program 1 times [2023-12-21 21:55:49,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:55:49,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [107927215] [2023-12-21 21:55:49,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:55:49,501 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 [2023-12-21 21:55:49,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:55:49,502 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) [2023-12-21 21:55:49,503 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 [2023-12-21 21:55:49,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:55:49,604 INFO L262 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:55:49,607 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:55:49,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:55:49,666 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:55:49,666 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:55:49,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [107927215] [2023-12-21 21:55:49,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [107927215] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:55:49,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:55:49,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:55:49,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461951292] [2023-12-21 21:55:49,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:55:49,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:55:49,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:55:49,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:55:49,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:55:49,669 INFO L87 Difference]: Start difference. First operand 2486 states and 4518 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:55:50,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:55:50,098 INFO L93 Difference]: Finished difference Result 2840 states and 5067 transitions. [2023-12-21 21:55:50,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:55:50,099 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2023-12-21 21:55:50,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:55:50,109 INFO L225 Difference]: With dead ends: 2840 [2023-12-21 21:55:50,109 INFO L226 Difference]: Without dead ends: 2486 [2023-12-21 21:55:50,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 21:55:50,111 INFO L413 NwaCegarLoop]: 4129 mSDtfsCounter, 4318 mSDsluCounter, 8180 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4331 SdHoareTripleChecker+Valid, 12309 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 21:55:50,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4331 Valid, 12309 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 21:55:50,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2486 states. [2023-12-21 21:55:50,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2486 to 2486. [2023-12-21 21:55:50,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2486 states, 2438 states have (on average 1.822805578342904) internal successors, (4444), 2441 states have internal predecessors, (4444), 33 states have call successors, (33), 12 states have call predecessors, (33), 13 states have return successors, (34), 33 states have call predecessors, (34), 33 states have call successors, (34) [2023-12-21 21:55:50,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2486 states to 2486 states and 4511 transitions. [2023-12-21 21:55:50,184 INFO L78 Accepts]: Start accepts. Automaton has 2486 states and 4511 transitions. Word has length 91 [2023-12-21 21:55:50,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:55:50,185 INFO L495 AbstractCegarLoop]: Abstraction has 2486 states and 4511 transitions. [2023-12-21 21:55:50,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:55:50,185 INFO L276 IsEmpty]: Start isEmpty. Operand 2486 states and 4511 transitions. [2023-12-21 21:55:50,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-21 21:55:50,186 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:55:50,186 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:55:50,199 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 [2023-12-21 21:55:50,399 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 [2023-12-21 21:55:50,400 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:55:50,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:55:50,400 INFO L85 PathProgramCache]: Analyzing trace with hash -755592744, now seen corresponding path program 1 times [2023-12-21 21:55:50,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:55:50,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1044288580] [2023-12-21 21:55:50,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:55:50,401 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 [2023-12-21 21:55:50,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:55:50,402 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) [2023-12-21 21:55:50,403 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 [2023-12-21 21:55:50,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:55:50,507 INFO L262 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:55:50,509 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:55:50,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:55:50,563 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:55:50,564 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:55:50,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1044288580] [2023-12-21 21:55:50,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1044288580] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:55:50,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:55:50,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:55:50,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749973008] [2023-12-21 21:55:50,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:55:50,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:55:50,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:55:50,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:55:50,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:55:50,566 INFO L87 Difference]: Start difference. First operand 2486 states and 4511 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:55:50,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:55:50,918 INFO L93 Difference]: Finished difference Result 2840 states and 5053 transitions. [2023-12-21 21:55:50,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:55:50,919 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2023-12-21 21:55:50,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:55:50,930 INFO L225 Difference]: With dead ends: 2840 [2023-12-21 21:55:50,930 INFO L226 Difference]: Without dead ends: 2486 [2023-12-21 21:55:50,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 21:55:50,934 INFO L413 NwaCegarLoop]: 4126 mSDtfsCounter, 4312 mSDsluCounter, 8176 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4325 SdHoareTripleChecker+Valid, 12302 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 21:55:50,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4325 Valid, 12302 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 21:55:50,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2486 states. [2023-12-21 21:55:51,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2486 to 2486. [2023-12-21 21:55:51,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2486 states, 2438 states have (on average 1.8199343724364232) internal successors, (4437), 2441 states have internal predecessors, (4437), 33 states have call successors, (33), 12 states have call predecessors, (33), 13 states have return successors, (34), 33 states have call predecessors, (34), 33 states have call successors, (34) [2023-12-21 21:55:51,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2486 states to 2486 states and 4504 transitions. [2023-12-21 21:55:51,022 INFO L78 Accepts]: Start accepts. Automaton has 2486 states and 4504 transitions. Word has length 91 [2023-12-21 21:55:51,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:55:51,022 INFO L495 AbstractCegarLoop]: Abstraction has 2486 states and 4504 transitions. [2023-12-21 21:55:51,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:55:51,023 INFO L276 IsEmpty]: Start isEmpty. Operand 2486 states and 4504 transitions. [2023-12-21 21:55:51,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-21 21:55:51,024 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:55:51,024 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:55:51,032 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 [2023-12-21 21:55:51,229 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 [2023-12-21 21:55:51,229 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:55:51,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:55:51,230 INFO L85 PathProgramCache]: Analyzing trace with hash -812705452, now seen corresponding path program 1 times [2023-12-21 21:55:51,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:55:51,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2094890617] [2023-12-21 21:55:51,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:55:51,231 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 [2023-12-21 21:55:51,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:55:51,232 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) [2023-12-21 21:55:51,233 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 [2023-12-21 21:55:51,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:55:51,327 INFO L262 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:55:51,329 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:55:51,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:55:51,386 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:55:51,386 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:55:51,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2094890617] [2023-12-21 21:55:51,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2094890617] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:55:51,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:55:51,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:55:51,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443632723] [2023-12-21 21:55:51,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:55:51,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:55:51,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:55:51,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:55:51,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:55:51,388 INFO L87 Difference]: Start difference. First operand 2486 states and 4504 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:55:51,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:55:51,810 INFO L93 Difference]: Finished difference Result 2922 states and 5171 transitions. [2023-12-21 21:55:51,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:55:51,811 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2023-12-21 21:55:51,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:55:51,821 INFO L225 Difference]: With dead ends: 2922 [2023-12-21 21:55:51,822 INFO L226 Difference]: Without dead ends: 2568 [2023-12-21 21:55:51,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 21:55:51,824 INFO L413 NwaCegarLoop]: 4124 mSDtfsCounter, 4357 mSDsluCounter, 8172 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4370 SdHoareTripleChecker+Valid, 12296 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 21:55:51,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4370 Valid, 12296 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 337 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 21:55:51,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2568 states. [2023-12-21 21:55:51,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2568 to 2568. [2023-12-21 21:55:51,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2568 states, 2514 states have (on average 1.8058870326173428) internal successors, (4540), 2517 states have internal predecessors, (4540), 35 states have call successors, (35), 16 states have call predecessors, (35), 17 states have return successors, (36), 35 states have call predecessors, (36), 35 states have call successors, (36) [2023-12-21 21:55:51,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2568 states to 2568 states and 4611 transitions. [2023-12-21 21:55:51,903 INFO L78 Accepts]: Start accepts. Automaton has 2568 states and 4611 transitions. Word has length 91 [2023-12-21 21:55:51,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:55:51,904 INFO L495 AbstractCegarLoop]: Abstraction has 2568 states and 4611 transitions. [2023-12-21 21:55:51,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:55:51,904 INFO L276 IsEmpty]: Start isEmpty. Operand 2568 states and 4611 transitions. [2023-12-21 21:55:51,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-21 21:55:51,905 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:55:51,905 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:55:51,915 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 (8)] Forceful destruction successful, exit code 0 [2023-12-21 21:55:52,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /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 [2023-12-21 21:55:52,116 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:55:52,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:55:52,116 INFO L85 PathProgramCache]: Analyzing trace with hash -751523945, now seen corresponding path program 1 times [2023-12-21 21:55:52,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:55:52,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [162979632] [2023-12-21 21:55:52,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:55:52,117 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 [2023-12-21 21:55:52,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:55:52,119 INFO L229 MonitoredProcess]: Starting monitored process 9 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) [2023-12-21 21:55:52,137 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 (9)] Waiting until timeout for monitored process [2023-12-21 21:55:52,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:55:52,223 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:55:52,225 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:55:52,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:55:52,284 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:55:52,284 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:55:52,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [162979632] [2023-12-21 21:55:52,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [162979632] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:55:52,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:55:52,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:55:52,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402582828] [2023-12-21 21:55:52,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:55:52,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:55:52,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:55:52,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:55:52,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:55:52,286 INFO L87 Difference]: Start difference. First operand 2568 states and 4611 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:55:52,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:55:52,715 INFO L93 Difference]: Finished difference Result 3086 states and 5385 transitions. [2023-12-21 21:55:52,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:55:52,716 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2023-12-21 21:55:52,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:55:52,726 INFO L225 Difference]: With dead ends: 3086 [2023-12-21 21:55:52,726 INFO L226 Difference]: Without dead ends: 2650 [2023-12-21 21:55:52,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 21:55:52,729 INFO L413 NwaCegarLoop]: 4121 mSDtfsCounter, 4350 mSDsluCounter, 8168 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4363 SdHoareTripleChecker+Valid, 12289 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 21:55:52,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4363 Valid, 12289 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 21:55:52,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2650 states. [2023-12-21 21:55:52,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2650 to 2650. [2023-12-21 21:55:52,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2650 states, 2590 states have (on average 1.7911196911196912) internal successors, (4639), 2593 states have internal predecessors, (4639), 37 states have call successors, (37), 20 states have call predecessors, (37), 21 states have return successors, (38), 37 states have call predecessors, (38), 37 states have call successors, (38) [2023-12-21 21:55:52,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2650 states to 2650 states and 4714 transitions. [2023-12-21 21:55:52,827 INFO L78 Accepts]: Start accepts. Automaton has 2650 states and 4714 transitions. Word has length 91 [2023-12-21 21:55:52,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:55:52,828 INFO L495 AbstractCegarLoop]: Abstraction has 2650 states and 4714 transitions. [2023-12-21 21:55:52,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:55:52,828 INFO L276 IsEmpty]: Start isEmpty. Operand 2650 states and 4714 transitions. [2023-12-21 21:55:52,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-21 21:55:52,830 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:55:52,830 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:55:52,836 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 (9)] Forceful destruction successful, exit code 0 [2023-12-21 21:55:53,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /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 [2023-12-21 21:55:53,037 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:55:53,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:55:53,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1375788563, now seen corresponding path program 1 times [2023-12-21 21:55:53,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:55:53,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1915269445] [2023-12-21 21:55:53,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:55:53,038 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 [2023-12-21 21:55:53,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:55:53,039 INFO L229 MonitoredProcess]: Starting monitored process 10 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) [2023-12-21 21:55:53,040 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 (10)] Waiting until timeout for monitored process [2023-12-21 21:55:53,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:55:53,133 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:55:53,136 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:55:53,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:55:53,190 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:55:53,190 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:55:53,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1915269445] [2023-12-21 21:55:53,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1915269445] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:55:53,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:55:53,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:55:53,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500034180] [2023-12-21 21:55:53,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:55:53,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:55:53,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:55:53,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:55:53,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:55:53,192 INFO L87 Difference]: Start difference. First operand 2650 states and 4714 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:55:53,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:55:53,608 INFO L93 Difference]: Finished difference Result 3250 states and 5591 transitions. [2023-12-21 21:55:53,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:55:53,609 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2023-12-21 21:55:53,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:55:53,619 INFO L225 Difference]: With dead ends: 3250 [2023-12-21 21:55:53,619 INFO L226 Difference]: Without dead ends: 2732 [2023-12-21 21:55:53,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 21:55:53,622 INFO L413 NwaCegarLoop]: 4118 mSDtfsCounter, 4344 mSDsluCounter, 8164 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4357 SdHoareTripleChecker+Valid, 12282 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 21:55:53,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4357 Valid, 12282 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 21:55:53,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2732 states. [2023-12-21 21:55:53,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2732 to 2732. [2023-12-21 21:55:53,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2732 states, 2666 states have (on average 1.7756939234808702) internal successors, (4734), 2669 states have internal predecessors, (4734), 39 states have call successors, (39), 24 states have call predecessors, (39), 25 states have return successors, (40), 39 states have call predecessors, (40), 39 states have call successors, (40) [2023-12-21 21:55:53,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2732 states to 2732 states and 4813 transitions. [2023-12-21 21:55:53,688 INFO L78 Accepts]: Start accepts. Automaton has 2732 states and 4813 transitions. Word has length 91 [2023-12-21 21:55:53,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:55:53,688 INFO L495 AbstractCegarLoop]: Abstraction has 2732 states and 4813 transitions. [2023-12-21 21:55:53,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:55:53,688 INFO L276 IsEmpty]: Start isEmpty. Operand 2732 states and 4813 transitions. [2023-12-21 21:55:53,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-21 21:55:53,689 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:55:53,689 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:55:53,698 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 (10)] Forceful destruction successful, exit code 0 [2023-12-21 21:55:53,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /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 [2023-12-21 21:55:53,894 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:55:53,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:55:53,894 INFO L85 PathProgramCache]: Analyzing trace with hash -794977000, now seen corresponding path program 1 times [2023-12-21 21:55:53,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:55:53,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1155017726] [2023-12-21 21:55:53,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:55:53,895 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 [2023-12-21 21:55:53,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:55:53,896 INFO L229 MonitoredProcess]: Starting monitored process 11 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) [2023-12-21 21:55:53,908 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 (11)] Waiting until timeout for monitored process [2023-12-21 21:55:53,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:55:53,989 INFO L262 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:55:53,991 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:55:54,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:55:54,040 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:55:54,040 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:55:54,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1155017726] [2023-12-21 21:55:54,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1155017726] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:55:54,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:55:54,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:55:54,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132050104] [2023-12-21 21:55:54,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:55:54,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:55:54,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:55:54,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:55:54,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:55:54,042 INFO L87 Difference]: Start difference. First operand 2732 states and 4813 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:55:54,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:55:54,480 INFO L93 Difference]: Finished difference Result 3414 states and 5789 transitions. [2023-12-21 21:55:54,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:55:54,481 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2023-12-21 21:55:54,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:55:54,494 INFO L225 Difference]: With dead ends: 3414 [2023-12-21 21:55:54,495 INFO L226 Difference]: Without dead ends: 2814 [2023-12-21 21:55:54,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 21:55:54,497 INFO L413 NwaCegarLoop]: 4115 mSDtfsCounter, 4337 mSDsluCounter, 8160 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4350 SdHoareTripleChecker+Valid, 12275 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 21:55:54,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4350 Valid, 12275 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 21:55:54,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2814 states. [2023-12-21 21:55:54,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2814 to 2814. [2023-12-21 21:55:54,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2814 states, 2742 states have (on average 1.7596644784828592) internal successors, (4825), 2745 states have internal predecessors, (4825), 41 states have call successors, (41), 28 states have call predecessors, (41), 29 states have return successors, (42), 41 states have call predecessors, (42), 41 states have call successors, (42) [2023-12-21 21:55:54,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2814 states to 2814 states and 4908 transitions. [2023-12-21 21:55:54,569 INFO L78 Accepts]: Start accepts. Automaton has 2814 states and 4908 transitions. Word has length 91 [2023-12-21 21:55:54,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:55:54,570 INFO L495 AbstractCegarLoop]: Abstraction has 2814 states and 4908 transitions. [2023-12-21 21:55:54,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:55:54,570 INFO L276 IsEmpty]: Start isEmpty. Operand 2814 states and 4908 transitions. [2023-12-21 21:55:54,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-21 21:55:54,571 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:55:54,571 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:55:54,579 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 (11)] Forceful destruction successful, exit code 0 [2023-12-21 21:55:54,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /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 [2023-12-21 21:55:54,775 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:55:54,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:55:54,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1966690061, now seen corresponding path program 1 times [2023-12-21 21:55:54,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:55:54,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [187136093] [2023-12-21 21:55:54,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:55:54,777 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 [2023-12-21 21:55:54,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:55:54,778 INFO L229 MonitoredProcess]: Starting monitored process 12 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) [2023-12-21 21:55:54,778 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 (12)] Waiting until timeout for monitored process [2023-12-21 21:55:54,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:55:54,861 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:55:54,863 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:55:54,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:55:54,910 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:55:54,910 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:55:54,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [187136093] [2023-12-21 21:55:54,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [187136093] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:55:54,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:55:54,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:55:54,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443938775] [2023-12-21 21:55:54,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:55:54,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:55:54,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:55:54,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:55:54,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:55:54,912 INFO L87 Difference]: Start difference. First operand 2814 states and 4908 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:55:55,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:55:55,286 INFO L93 Difference]: Finished difference Result 3578 states and 5979 transitions. [2023-12-21 21:55:55,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:55:55,286 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2023-12-21 21:55:55,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:55:55,293 INFO L225 Difference]: With dead ends: 3578 [2023-12-21 21:55:55,293 INFO L226 Difference]: Without dead ends: 2896 [2023-12-21 21:55:55,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 21:55:55,295 INFO L413 NwaCegarLoop]: 4112 mSDtfsCounter, 4329 mSDsluCounter, 8156 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4342 SdHoareTripleChecker+Valid, 12268 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 21:55:55,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4342 Valid, 12268 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 21:55:55,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2896 states. [2023-12-21 21:55:55,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2896 to 2896. [2023-12-21 21:55:55,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2896 states, 2818 states have (on average 1.7430801987224982) internal successors, (4912), 2821 states have internal predecessors, (4912), 43 states have call successors, (43), 32 states have call predecessors, (43), 33 states have return successors, (44), 43 states have call predecessors, (44), 43 states have call successors, (44) [2023-12-21 21:55:55,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2896 states to 2896 states and 4999 transitions. [2023-12-21 21:55:55,361 INFO L78 Accepts]: Start accepts. Automaton has 2896 states and 4999 transitions. Word has length 91 [2023-12-21 21:55:55,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:55:55,361 INFO L495 AbstractCegarLoop]: Abstraction has 2896 states and 4999 transitions. [2023-12-21 21:55:55,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:55:55,361 INFO L276 IsEmpty]: Start isEmpty. Operand 2896 states and 4999 transitions. [2023-12-21 21:55:55,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-21 21:55:55,362 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:55:55,362 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:55:55,369 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 (12)] Forceful destruction successful, exit code 0 [2023-12-21 21:55:55,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /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 [2023-12-21 21:55:55,567 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:55:55,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:55:55,567 INFO L85 PathProgramCache]: Analyzing trace with hash 2132315790, now seen corresponding path program 1 times [2023-12-21 21:55:55,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:55:55,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1673253916] [2023-12-21 21:55:55,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:55:55,568 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 [2023-12-21 21:55:55,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:55:55,570 INFO L229 MonitoredProcess]: Starting monitored process 13 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) [2023-12-21 21:55:55,598 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 (13)] Waiting until timeout for monitored process [2023-12-21 21:55:55,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:55:55,659 INFO L262 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:55:55,661 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:55:55,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:55:55,672 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:55:55,673 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:55:55,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1673253916] [2023-12-21 21:55:55,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1673253916] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:55:55,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:55:55,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:55:55,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715878258] [2023-12-21 21:55:55,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:55:55,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:55:55,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:55:55,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:55:55,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:55:55,674 INFO L87 Difference]: Start difference. First operand 2896 states and 4999 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:55:55,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:55:55,791 INFO L93 Difference]: Finished difference Result 3727 states and 6140 transitions. [2023-12-21 21:55:55,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:55:55,792 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2023-12-21 21:55:55,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:55:55,797 INFO L225 Difference]: With dead ends: 3727 [2023-12-21 21:55:55,797 INFO L226 Difference]: Without dead ends: 2964 [2023-12-21 21:55:55,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:55:55,800 INFO L413 NwaCegarLoop]: 4197 mSDtfsCounter, 47 mSDsluCounter, 8385 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 12582 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 21:55:55,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 12582 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 21:55:55,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2964 states. [2023-12-21 21:55:55,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2964 to 2900. [2023-12-21 21:55:55,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2900 states, 2822 states have (on average 1.738483345145287) internal successors, (4906), 2825 states have internal predecessors, (4906), 43 states have call successors, (43), 32 states have call predecessors, (43), 33 states have return successors, (44), 43 states have call predecessors, (44), 43 states have call successors, (44) [2023-12-21 21:55:55,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2900 states to 2900 states and 4993 transitions. [2023-12-21 21:55:55,870 INFO L78 Accepts]: Start accepts. Automaton has 2900 states and 4993 transitions. Word has length 91 [2023-12-21 21:55:55,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:55:55,870 INFO L495 AbstractCegarLoop]: Abstraction has 2900 states and 4993 transitions. [2023-12-21 21:55:55,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:55:55,870 INFO L276 IsEmpty]: Start isEmpty. Operand 2900 states and 4993 transitions. [2023-12-21 21:55:55,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-21 21:55:55,871 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:55:55,871 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:55:55,878 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 (13)] Forceful destruction successful, exit code 0 [2023-12-21 21:55:56,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /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 [2023-12-21 21:55:56,078 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:55:56,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:55:56,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1728922420, now seen corresponding path program 1 times [2023-12-21 21:55:56,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:55:56,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1034224238] [2023-12-21 21:55:56,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:55:56,079 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 [2023-12-21 21:55:56,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:55:56,081 INFO L229 MonitoredProcess]: Starting monitored process 14 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) [2023-12-21 21:55:56,088 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 (14)] Waiting until timeout for monitored process [2023-12-21 21:55:56,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:55:56,165 INFO L262 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:55:56,167 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:55:56,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:55:56,194 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:55:56,194 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:55:56,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1034224238] [2023-12-21 21:55:56,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1034224238] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:55:56,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:55:56,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:55:56,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297349333] [2023-12-21 21:55:56,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:55:56,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:55:56,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:55:56,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:55:56,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:55:56,196 INFO L87 Difference]: Start difference. First operand 2900 states and 4993 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:55:56,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:55:56,304 INFO L93 Difference]: Finished difference Result 3723 states and 6112 transitions. [2023-12-21 21:55:56,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:55:56,304 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2023-12-21 21:55:56,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:55:56,309 INFO L225 Difference]: With dead ends: 3723 [2023-12-21 21:55:56,310 INFO L226 Difference]: Without dead ends: 2956 [2023-12-21 21:55:56,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:55:56,312 INFO L413 NwaCegarLoop]: 4197 mSDtfsCounter, 38 mSDsluCounter, 8386 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 12583 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:55:56,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 12583 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 21:55:56,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2956 states. [2023-12-21 21:55:56,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2956 to 2904. [2023-12-21 21:55:56,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2904 states, 2826 states have (on average 1.7338995046001415) internal successors, (4900), 2829 states have internal predecessors, (4900), 43 states have call successors, (43), 32 states have call predecessors, (43), 33 states have return successors, (44), 43 states have call predecessors, (44), 43 states have call successors, (44) [2023-12-21 21:55:56,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2904 states to 2904 states and 4987 transitions. [2023-12-21 21:55:56,378 INFO L78 Accepts]: Start accepts. Automaton has 2904 states and 4987 transitions. Word has length 91 [2023-12-21 21:55:56,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:55:56,378 INFO L495 AbstractCegarLoop]: Abstraction has 2904 states and 4987 transitions. [2023-12-21 21:55:56,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:55:56,379 INFO L276 IsEmpty]: Start isEmpty. Operand 2904 states and 4987 transitions. [2023-12-21 21:55:56,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-21 21:55:56,380 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:55:56,380 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:55:56,384 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 (14)] Forceful destruction successful, exit code 0 [2023-12-21 21:55:56,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /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 [2023-12-21 21:55:56,584 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:55:56,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:55:56,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1285021746, now seen corresponding path program 1 times [2023-12-21 21:55:56,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:55:56,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1249120455] [2023-12-21 21:55:56,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:55:56,585 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 [2023-12-21 21:55:56,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:55:56,587 INFO L229 MonitoredProcess]: Starting monitored process 15 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) [2023-12-21 21:55:56,616 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 (15)] Waiting until timeout for monitored process [2023-12-21 21:55:56,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:55:56,678 INFO L262 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:55:56,680 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:55:56,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:55:56,690 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:55:56,691 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:55:56,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1249120455] [2023-12-21 21:55:56,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1249120455] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:55:56,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:55:56,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:55:56,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849287275] [2023-12-21 21:55:56,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:55:56,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:55:56,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:55:56,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:55:56,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:55:56,692 INFO L87 Difference]: Start difference. First operand 2904 states and 4987 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:55:56,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:55:56,794 INFO L93 Difference]: Finished difference Result 3719 states and 6084 transitions. [2023-12-21 21:55:56,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:55:56,795 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2023-12-21 21:55:56,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:55:56,800 INFO L225 Difference]: With dead ends: 3719 [2023-12-21 21:55:56,800 INFO L226 Difference]: Without dead ends: 2948 [2023-12-21 21:55:56,802 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:55:56,802 INFO L413 NwaCegarLoop]: 4197 mSDtfsCounter, 29 mSDsluCounter, 8387 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 12584 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:55:56,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 12584 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 21:55:56,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2948 states. [2023-12-21 21:55:56,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2948 to 2908. [2023-12-21 21:55:56,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2908 states, 2830 states have (on average 1.7293286219081272) internal successors, (4894), 2833 states have internal predecessors, (4894), 43 states have call successors, (43), 32 states have call predecessors, (43), 33 states have return successors, (44), 43 states have call predecessors, (44), 43 states have call successors, (44) [2023-12-21 21:55:56,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2908 states to 2908 states and 4981 transitions. [2023-12-21 21:55:56,870 INFO L78 Accepts]: Start accepts. Automaton has 2908 states and 4981 transitions. Word has length 91 [2023-12-21 21:55:56,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:55:56,870 INFO L495 AbstractCegarLoop]: Abstraction has 2908 states and 4981 transitions. [2023-12-21 21:55:56,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:55:56,871 INFO L276 IsEmpty]: Start isEmpty. Operand 2908 states and 4981 transitions. [2023-12-21 21:55:56,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-21 21:55:56,872 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:55:56,872 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:55:56,879 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 (15)] Forceful destruction successful, exit code 0 [2023-12-21 21:55:57,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /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 [2023-12-21 21:55:57,076 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:55:57,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:55:57,077 INFO L85 PathProgramCache]: Analyzing trace with hash 654140300, now seen corresponding path program 1 times [2023-12-21 21:55:57,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:55:57,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1105321250] [2023-12-21 21:55:57,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:55:57,078 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 [2023-12-21 21:55:57,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:55:57,079 INFO L229 MonitoredProcess]: Starting monitored process 16 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) [2023-12-21 21:55:57,108 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 (16)] Waiting until timeout for monitored process [2023-12-21 21:55:57,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:55:57,172 INFO L262 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:55:57,174 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:55:57,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:55:57,189 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:55:57,189 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:55:57,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1105321250] [2023-12-21 21:55:57,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1105321250] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:55:57,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:55:57,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:55:57,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512688886] [2023-12-21 21:55:57,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:55:57,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:55:57,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:55:57,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:55:57,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:55:57,192 INFO L87 Difference]: Start difference. First operand 2908 states and 4981 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:55:57,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:55:57,312 INFO L93 Difference]: Finished difference Result 3715 states and 6056 transitions. [2023-12-21 21:55:57,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:55:57,313 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2023-12-21 21:55:57,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:55:57,319 INFO L225 Difference]: With dead ends: 3715 [2023-12-21 21:55:57,320 INFO L226 Difference]: Without dead ends: 2940 [2023-12-21 21:55:57,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:55:57,324 INFO L413 NwaCegarLoop]: 4197 mSDtfsCounter, 20 mSDsluCounter, 8388 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 12585 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:55:57,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 12585 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 21:55:57,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2940 states. [2023-12-21 21:55:57,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2940 to 2912. [2023-12-21 21:55:57,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2912 states, 2834 states have (on average 1.724770642201835) internal successors, (4888), 2837 states have internal predecessors, (4888), 43 states have call successors, (43), 32 states have call predecessors, (43), 33 states have return successors, (44), 43 states have call predecessors, (44), 43 states have call successors, (44) [2023-12-21 21:55:57,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2912 states to 2912 states and 4975 transitions. [2023-12-21 21:55:57,391 INFO L78 Accepts]: Start accepts. Automaton has 2912 states and 4975 transitions. Word has length 91 [2023-12-21 21:55:57,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:55:57,392 INFO L495 AbstractCegarLoop]: Abstraction has 2912 states and 4975 transitions. [2023-12-21 21:55:57,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:55:57,392 INFO L276 IsEmpty]: Start isEmpty. Operand 2912 states and 4975 transitions. [2023-12-21 21:55:57,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-21 21:55:57,393 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:55:57,393 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:55:57,404 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 (16)] Forceful destruction successful, exit code 0 [2023-12-21 21:55:57,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /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 [2023-12-21 21:55:57,603 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:55:57,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:55:57,603 INFO L85 PathProgramCache]: Analyzing trace with hash -243252978, now seen corresponding path program 1 times [2023-12-21 21:55:57,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:55:57,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1685251224] [2023-12-21 21:55:57,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:55:57,604 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 [2023-12-21 21:55:57,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:55:57,605 INFO L229 MonitoredProcess]: Starting monitored process 17 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) [2023-12-21 21:55:57,607 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 (17)] Waiting until timeout for monitored process [2023-12-21 21:55:57,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:55:57,686 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:55:57,687 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:55:57,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:55:57,699 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:55:57,699 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:55:57,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1685251224] [2023-12-21 21:55:57,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1685251224] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:55:57,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:55:57,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:55:57,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088299958] [2023-12-21 21:55:57,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:55:57,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:55:57,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:55:57,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:55:57,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:55:57,701 INFO L87 Difference]: Start difference. First operand 2912 states and 4975 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:55:57,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:55:57,856 INFO L93 Difference]: Finished difference Result 3699 states and 6010 transitions. [2023-12-21 21:55:57,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:55:57,857 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2023-12-21 21:55:57,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:55:57,862 INFO L225 Difference]: With dead ends: 3699 [2023-12-21 21:55:57,863 INFO L226 Difference]: Without dead ends: 2920 [2023-12-21 21:55:57,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:55:57,864 INFO L413 NwaCegarLoop]: 4197 mSDtfsCounter, 2 mSDsluCounter, 8389 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 12586 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 21:55:57,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 12586 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 21:55:57,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2920 states. [2023-12-21 21:55:57,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2920 to 2916. [2023-12-21 21:55:57,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2916 states, 2838 states have (on average 1.7202255109231854) internal successors, (4882), 2841 states have internal predecessors, (4882), 43 states have call successors, (43), 32 states have call predecessors, (43), 33 states have return successors, (44), 43 states have call predecessors, (44), 43 states have call successors, (44) [2023-12-21 21:55:57,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2916 states to 2916 states and 4969 transitions. [2023-12-21 21:55:57,924 INFO L78 Accepts]: Start accepts. Automaton has 2916 states and 4969 transitions. Word has length 91 [2023-12-21 21:55:57,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:55:57,925 INFO L495 AbstractCegarLoop]: Abstraction has 2916 states and 4969 transitions. [2023-12-21 21:55:57,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:55:57,925 INFO L276 IsEmpty]: Start isEmpty. Operand 2916 states and 4969 transitions. [2023-12-21 21:55:57,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-21 21:55:57,926 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:55:57,926 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:55:57,934 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 (17)] Forceful destruction successful, exit code 0 [2023-12-21 21:55:58,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /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 [2023-12-21 21:55:58,130 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:55:58,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:55:58,131 INFO L85 PathProgramCache]: Analyzing trace with hash -315639536, now seen corresponding path program 1 times [2023-12-21 21:55:58,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:55:58,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1484686450] [2023-12-21 21:55:58,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:55:58,131 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 [2023-12-21 21:55:58,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:55:58,133 INFO L229 MonitoredProcess]: Starting monitored process 18 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) [2023-12-21 21:55:58,164 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 (18)] Waiting until timeout for monitored process [2023-12-21 21:55:58,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:55:58,227 INFO L262 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 21:55:58,229 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:55:58,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:55:58,331 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:55:58,331 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:55:58,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1484686450] [2023-12-21 21:55:58,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1484686450] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:55:58,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:55:58,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:55:58,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936117297] [2023-12-21 21:55:58,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:55:58,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:55:58,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:55:58,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:55:58,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:55:58,333 INFO L87 Difference]: Start difference. First operand 2916 states and 4969 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:55:58,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:55:58,603 INFO L93 Difference]: Finished difference Result 3700 states and 5969 transitions. [2023-12-21 21:55:58,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:55:58,604 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2023-12-21 21:55:58,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:55:58,610 INFO L225 Difference]: With dead ends: 3700 [2023-12-21 21:55:58,610 INFO L226 Difference]: Without dead ends: 2916 [2023-12-21 21:55:58,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 21:55:58,613 INFO L413 NwaCegarLoop]: 4108 mSDtfsCounter, 4240 mSDsluCounter, 8152 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4252 SdHoareTripleChecker+Valid, 12260 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 21:55:58,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4252 Valid, 12260 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 21:55:58,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2916 states. [2023-12-21 21:55:58,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2916 to 2916. [2023-12-21 21:55:58,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2916 states, 2838 states have (on average 1.7177589852008457) internal successors, (4875), 2841 states have internal predecessors, (4875), 43 states have call successors, (43), 32 states have call predecessors, (43), 33 states have return successors, (44), 43 states have call predecessors, (44), 43 states have call successors, (44) [2023-12-21 21:55:58,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2916 states to 2916 states and 4962 transitions. [2023-12-21 21:55:58,691 INFO L78 Accepts]: Start accepts. Automaton has 2916 states and 4962 transitions. Word has length 91 [2023-12-21 21:55:58,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:55:58,691 INFO L495 AbstractCegarLoop]: Abstraction has 2916 states and 4962 transitions. [2023-12-21 21:55:58,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:55:58,692 INFO L276 IsEmpty]: Start isEmpty. Operand 2916 states and 4962 transitions. [2023-12-21 21:55:58,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-21 21:55:58,693 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:55:58,693 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:55:58,710 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 (18)] Forceful destruction successful, exit code 0 [2023-12-21 21:55:58,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /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 [2023-12-21 21:55:58,897 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:55:58,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:55:58,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1607588498, now seen corresponding path program 1 times [2023-12-21 21:55:58,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:55:58,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [985557031] [2023-12-21 21:55:58,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:55:58,898 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 [2023-12-21 21:55:58,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:55:58,900 INFO L229 MonitoredProcess]: Starting monitored process 19 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) [2023-12-21 21:55:58,932 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 (19)] Waiting until timeout for monitored process [2023-12-21 21:55:58,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:55:58,996 INFO L262 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 21:55:58,998 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:55:59,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:55:59,102 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:55:59,102 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:55:59,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [985557031] [2023-12-21 21:55:59,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [985557031] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:55:59,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:55:59,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:55:59,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83488819] [2023-12-21 21:55:59,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:55:59,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:55:59,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:55:59,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:55:59,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:55:59,106 INFO L87 Difference]: Start difference. First operand 2916 states and 4962 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:55:59,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:55:59,430 INFO L93 Difference]: Finished difference Result 3800 states and 6097 transitions. [2023-12-21 21:55:59,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 21:55:59,431 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2023-12-21 21:55:59,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:55:59,435 INFO L225 Difference]: With dead ends: 3800 [2023-12-21 21:55:59,435 INFO L226 Difference]: Without dead ends: 3016 [2023-12-21 21:55:59,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-21 21:55:59,437 INFO L413 NwaCegarLoop]: 4107 mSDtfsCounter, 4281 mSDsluCounter, 8148 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4293 SdHoareTripleChecker+Valid, 12255 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 21:55:59,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4293 Valid, 12255 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 21:55:59,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3016 states. [2023-12-21 21:55:59,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3016 to 2992. [2023-12-21 21:55:59,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2992 states, 2912 states have (on average 1.698489010989011) internal successors, (4946), 2915 states have internal predecessors, (4946), 43 states have call successors, (43), 34 states have call predecessors, (43), 35 states have return successors, (44), 43 states have call predecessors, (44), 43 states have call successors, (44) [2023-12-21 21:55:59,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2992 states to 2992 states and 5033 transitions. [2023-12-21 21:55:59,505 INFO L78 Accepts]: Start accepts. Automaton has 2992 states and 5033 transitions. Word has length 91 [2023-12-21 21:55:59,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:55:59,505 INFO L495 AbstractCegarLoop]: Abstraction has 2992 states and 5033 transitions. [2023-12-21 21:55:59,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:55:59,505 INFO L276 IsEmpty]: Start isEmpty. Operand 2992 states and 5033 transitions. [2023-12-21 21:55:59,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-21 21:55:59,506 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:55:59,506 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:55:59,511 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 (19)] Forceful destruction successful, exit code 0 [2023-12-21 21:55:59,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /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 [2023-12-21 21:55:59,711 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:55:59,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:55:59,711 INFO L85 PathProgramCache]: Analyzing trace with hash -81355244, now seen corresponding path program 1 times [2023-12-21 21:55:59,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:55:59,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1574844968] [2023-12-21 21:55:59,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:55:59,712 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 [2023-12-21 21:55:59,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:55:59,713 INFO L229 MonitoredProcess]: Starting monitored process 20 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) [2023-12-21 21:55:59,748 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 (20)] Waiting until timeout for monitored process [2023-12-21 21:55:59,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:55:59,809 INFO L262 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 21:55:59,811 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:55:59,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:55:59,908 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:55:59,908 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:55:59,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1574844968] [2023-12-21 21:55:59,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1574844968] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:55:59,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:55:59,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 21:55:59,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263247151] [2023-12-21 21:55:59,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:55:59,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 21:55:59,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:55:59,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 21:55:59,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:55:59,911 INFO L87 Difference]: Start difference. First operand 2992 states and 5033 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-21 21:56:00,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:56:00,051 INFO L93 Difference]: Finished difference Result 4683 states and 7136 transitions. [2023-12-21 21:56:00,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 21:56:00,052 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 91 [2023-12-21 21:56:00,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:56:00,058 INFO L225 Difference]: With dead ends: 4683 [2023-12-21 21:56:00,058 INFO L226 Difference]: Without dead ends: 3824 [2023-12-21 21:56:00,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:56:00,061 INFO L413 NwaCegarLoop]: 4228 mSDtfsCounter, 4116 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4116 SdHoareTripleChecker+Valid, 4435 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:56:00,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4116 Valid, 4435 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 21:56:00,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3824 states. [2023-12-21 21:56:00,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3824 to 3822. [2023-12-21 21:56:00,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3822 states, 3668 states have (on average 1.6000545256270446) internal successors, (5869), 3674 states have internal predecessors, (5869), 82 states have call successors, (82), 68 states have call predecessors, (82), 70 states have return successors, (84), 80 states have call predecessors, (84), 82 states have call successors, (84) [2023-12-21 21:56:00,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3822 states to 3822 states and 6035 transitions. [2023-12-21 21:56:00,160 INFO L78 Accepts]: Start accepts. Automaton has 3822 states and 6035 transitions. Word has length 91 [2023-12-21 21:56:00,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:56:00,161 INFO L495 AbstractCegarLoop]: Abstraction has 3822 states and 6035 transitions. [2023-12-21 21:56:00,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-21 21:56:00,161 INFO L276 IsEmpty]: Start isEmpty. Operand 3822 states and 6035 transitions. [2023-12-21 21:56:00,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-21 21:56:00,163 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:56:00,163 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:56:00,168 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 (20)] Forceful destruction successful, exit code 0 [2023-12-21 21:56:00,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /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 [2023-12-21 21:56:00,367 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:56:00,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:56:00,368 INFO L85 PathProgramCache]: Analyzing trace with hash -236514157, now seen corresponding path program 1 times [2023-12-21 21:56:00,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:56:00,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [980651358] [2023-12-21 21:56:00,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:56:00,368 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 [2023-12-21 21:56:00,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:56:00,370 INFO L229 MonitoredProcess]: Starting monitored process 21 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) [2023-12-21 21:56:00,405 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 (21)] Waiting until timeout for monitored process [2023-12-21 21:56:00,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:56:00,480 INFO L262 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 21:56:00,482 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:56:00,632 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-21 21:56:00,632 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:56:00,632 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:56:00,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [980651358] [2023-12-21 21:56:00,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [980651358] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:56:00,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:56:00,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:56:00,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367561680] [2023-12-21 21:56:00,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:56:00,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:56:00,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:56:00,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:56:00,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:56:00,634 INFO L87 Difference]: Start difference. First operand 3822 states and 6035 transitions. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-21 21:56:01,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:56:01,060 INFO L93 Difference]: Finished difference Result 7104 states and 10039 transitions. [2023-12-21 21:56:01,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:56:01,061 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 147 [2023-12-21 21:56:01,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:56:01,072 INFO L225 Difference]: With dead ends: 7104 [2023-12-21 21:56:01,072 INFO L226 Difference]: Without dead ends: 5416 [2023-12-21 21:56:01,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:56:01,076 INFO L413 NwaCegarLoop]: 4232 mSDtfsCounter, 4267 mSDsluCounter, 4315 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4271 SdHoareTripleChecker+Valid, 8547 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 21:56:01,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4271 Valid, 8547 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 21:56:01,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5416 states. [2023-12-21 21:56:01,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5416 to 5414. [2023-12-21 21:56:01,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5414 states, 5117 states have (on average 1.4909126441274183) internal successors, (7629), 5132 states have internal predecessors, (7629), 155 states have call successors, (155), 128 states have call predecessors, (155), 140 states have return successors, (179), 155 states have call predecessors, (179), 155 states have call successors, (179) [2023-12-21 21:56:01,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5414 states to 5414 states and 7963 transitions. [2023-12-21 21:56:01,258 INFO L78 Accepts]: Start accepts. Automaton has 5414 states and 7963 transitions. Word has length 147 [2023-12-21 21:56:01,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:56:01,259 INFO L495 AbstractCegarLoop]: Abstraction has 5414 states and 7963 transitions. [2023-12-21 21:56:01,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-21 21:56:01,259 INFO L276 IsEmpty]: Start isEmpty. Operand 5414 states and 7963 transitions. [2023-12-21 21:56:01,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-21 21:56:01,262 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:56:01,263 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:56:01,271 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 (21)] Forceful destruction successful, exit code 0 [2023-12-21 21:56:01,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /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 [2023-12-21 21:56:01,467 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:56:01,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:56:01,468 INFO L85 PathProgramCache]: Analyzing trace with hash 174096209, now seen corresponding path program 1 times [2023-12-21 21:56:01,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:56:01,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [188330279] [2023-12-21 21:56:01,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:56:01,468 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 [2023-12-21 21:56:01,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:56:01,469 INFO L229 MonitoredProcess]: Starting monitored process 22 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) [2023-12-21 21:56:01,470 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 (22)] Waiting until timeout for monitored process [2023-12-21 21:56:01,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:56:01,580 INFO L262 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 21:56:01,583 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:56:01,598 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-12-21 21:56:01,598 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:56:01,598 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:56:01,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [188330279] [2023-12-21 21:56:01,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [188330279] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:56:01,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:56:01,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 21:56:01,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160532561] [2023-12-21 21:56:01,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:56:01,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 21:56:01,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:56:01,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 21:56:01,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:56:01,603 INFO L87 Difference]: Start difference. First operand 5414 states and 7963 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 21:56:01,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:56:01,755 INFO L93 Difference]: Finished difference Result 8686 states and 11932 transitions. [2023-12-21 21:56:01,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 21:56:01,756 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 147 [2023-12-21 21:56:01,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:56:01,762 INFO L225 Difference]: With dead ends: 8686 [2023-12-21 21:56:01,762 INFO L226 Difference]: Without dead ends: 5406 [2023-12-21 21:56:01,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:56:01,767 INFO L413 NwaCegarLoop]: 4190 mSDtfsCounter, 250 mSDsluCounter, 3957 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 8147 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 21:56:01,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 8147 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 21:56:01,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5406 states. [2023-12-21 21:56:01,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5406 to 5406. [2023-12-21 21:56:01,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5406 states, 5112 states have (on average 1.4906103286384977) internal successors, (7620), 5126 states have internal predecessors, (7620), 152 states have call successors, (152), 128 states have call predecessors, (152), 140 states have return successors, (176), 152 states have call predecessors, (176), 152 states have call successors, (176) [2023-12-21 21:56:01,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5406 states to 5406 states and 7948 transitions. [2023-12-21 21:56:01,954 INFO L78 Accepts]: Start accepts. Automaton has 5406 states and 7948 transitions. Word has length 147 [2023-12-21 21:56:01,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:56:01,954 INFO L495 AbstractCegarLoop]: Abstraction has 5406 states and 7948 transitions. [2023-12-21 21:56:01,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 21:56:01,954 INFO L276 IsEmpty]: Start isEmpty. Operand 5406 states and 7948 transitions. [2023-12-21 21:56:01,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-21 21:56:01,957 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:56:01,957 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:56:01,965 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 (22)] Forceful destruction successful, exit code 0 [2023-12-21 21:56:02,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /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 [2023-12-21 21:56:02,162 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:56:02,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:56:02,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1288621934, now seen corresponding path program 1 times [2023-12-21 21:56:02,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:56:02,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1050373598] [2023-12-21 21:56:02,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:56:02,163 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 [2023-12-21 21:56:02,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:56:02,164 INFO L229 MonitoredProcess]: Starting monitored process 23 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) [2023-12-21 21:56:02,164 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 (23)] Waiting until timeout for monitored process [2023-12-21 21:56:02,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:56:02,263 INFO L262 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 21:56:02,265 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:56:02,435 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-21 21:56:02,435 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:56:02,435 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:56:02,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1050373598] [2023-12-21 21:56:02,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1050373598] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:56:02,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:56:02,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:56:02,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967481549] [2023-12-21 21:56:02,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:56:02,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:56:02,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:56:02,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:56:02,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:56:02,437 INFO L87 Difference]: Start difference. First operand 5406 states and 7948 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-21 21:56:02,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:56:02,970 INFO L93 Difference]: Finished difference Result 11637 states and 15514 transitions. [2023-12-21 21:56:02,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:56:02,972 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 149 [2023-12-21 21:56:02,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:56:02,984 INFO L225 Difference]: With dead ends: 11637 [2023-12-21 21:56:02,984 INFO L226 Difference]: Without dead ends: 8365 [2023-12-21 21:56:02,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:56:02,990 INFO L413 NwaCegarLoop]: 4215 mSDtfsCounter, 4262 mSDsluCounter, 4297 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4267 SdHoareTripleChecker+Valid, 8512 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 21:56:02,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4267 Valid, 8512 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 21:56:02,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8365 states. [2023-12-21 21:56:03,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8365 to 8363. [2023-12-21 21:56:03,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8363 states, 7802 states have (on average 1.3942578825942067) internal successors, (10878), 7833 states have internal predecessors, (10878), 287 states have call successors, (287), 240 states have call predecessors, (287), 272 states have return successors, (355), 291 states have call predecessors, (355), 287 states have call successors, (355) [2023-12-21 21:56:03,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8363 states to 8363 states and 11520 transitions. [2023-12-21 21:56:03,323 INFO L78 Accepts]: Start accepts. Automaton has 8363 states and 11520 transitions. Word has length 149 [2023-12-21 21:56:03,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:56:03,323 INFO L495 AbstractCegarLoop]: Abstraction has 8363 states and 11520 transitions. [2023-12-21 21:56:03,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-21 21:56:03,324 INFO L276 IsEmpty]: Start isEmpty. Operand 8363 states and 11520 transitions. [2023-12-21 21:56:03,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-21 21:56:03,328 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:56:03,328 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:56:03,333 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 (23)] Forceful destruction successful, exit code 0 [2023-12-21 21:56:03,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /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 [2023-12-21 21:56:03,533 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:56:03,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:56:03,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1132641392, now seen corresponding path program 1 times [2023-12-21 21:56:03,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:56:03,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [327076329] [2023-12-21 21:56:03,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:56:03,534 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 [2023-12-21 21:56:03,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:56:03,535 INFO L229 MonitoredProcess]: Starting monitored process 24 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) [2023-12-21 21:56:03,565 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 (24)] Waiting until timeout for monitored process [2023-12-21 21:56:03,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:56:03,654 INFO L262 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 21:56:03,657 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:56:03,671 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-12-21 21:56:03,672 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:56:03,672 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:56:03,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [327076329] [2023-12-21 21:56:03,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [327076329] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:56:03,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:56:03,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 21:56:03,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36643679] [2023-12-21 21:56:03,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:56:03,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 21:56:03,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:56:03,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 21:56:03,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:56:03,674 INFO L87 Difference]: Start difference. First operand 8363 states and 11520 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 21:56:04,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:56:04,081 INFO L93 Difference]: Finished difference Result 14585 states and 19049 transitions. [2023-12-21 21:56:04,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 21:56:04,081 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 149 [2023-12-21 21:56:04,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:56:04,095 INFO L225 Difference]: With dead ends: 14585 [2023-12-21 21:56:04,095 INFO L226 Difference]: Without dead ends: 8356 [2023-12-21 21:56:04,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:56:04,105 INFO L413 NwaCegarLoop]: 4189 mSDtfsCounter, 248 mSDsluCounter, 3957 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 8146 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 21:56:04,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 8146 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 21:56:04,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8356 states. [2023-12-21 21:56:04,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8356 to 8356. [2023-12-21 21:56:04,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8356 states, 7798 states have (on average 1.3940754039497307) internal successors, (10871), 7828 states have internal predecessors, (10871), 284 states have call successors, (284), 240 states have call predecessors, (284), 272 states have return successors, (352), 288 states have call predecessors, (352), 284 states have call successors, (352) [2023-12-21 21:56:04,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8356 states to 8356 states and 11507 transitions. [2023-12-21 21:56:04,401 INFO L78 Accepts]: Start accepts. Automaton has 8356 states and 11507 transitions. Word has length 149 [2023-12-21 21:56:04,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:56:04,401 INFO L495 AbstractCegarLoop]: Abstraction has 8356 states and 11507 transitions. [2023-12-21 21:56:04,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 21:56:04,402 INFO L276 IsEmpty]: Start isEmpty. Operand 8356 states and 11507 transitions. [2023-12-21 21:56:04,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-21 21:56:04,406 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:56:04,406 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:56:04,411 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 (24)] Forceful destruction successful, exit code 0 [2023-12-21 21:56:04,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /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 [2023-12-21 21:56:04,611 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:56:04,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:56:04,612 INFO L85 PathProgramCache]: Analyzing trace with hash 473251027, now seen corresponding path program 1 times [2023-12-21 21:56:04,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:56:04,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1684468328] [2023-12-21 21:56:04,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:56:04,612 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 [2023-12-21 21:56:04,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:56:04,614 INFO L229 MonitoredProcess]: Starting monitored process 25 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) [2023-12-21 21:56:04,643 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 (25)] Waiting until timeout for monitored process [2023-12-21 21:56:04,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:56:04,730 INFO L262 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 21:56:04,733 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:56:04,891 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-21 21:56:04,891 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:56:04,891 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:56:04,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1684468328] [2023-12-21 21:56:04,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1684468328] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:56:04,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:56:04,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:56:04,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311753160] [2023-12-21 21:56:04,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:56:04,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:56:04,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:56:04,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:56:04,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:56:04,892 INFO L87 Difference]: Start difference. First operand 8356 states and 11507 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-21 21:56:05,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:56:05,633 INFO L93 Difference]: Finished difference Result 20160 states and 25797 transitions. [2023-12-21 21:56:05,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:56:05,633 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 151 [2023-12-21 21:56:05,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:56:05,665 INFO L225 Difference]: With dead ends: 20160 [2023-12-21 21:56:05,665 INFO L226 Difference]: Without dead ends: 13938 [2023-12-21 21:56:05,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:56:05,675 INFO L413 NwaCegarLoop]: 4129 mSDtfsCounter, 4267 mSDsluCounter, 4222 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4273 SdHoareTripleChecker+Valid, 8351 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 21:56:05,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4273 Valid, 8351 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 21:56:05,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13938 states. [2023-12-21 21:56:06,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13938 to 13936. [2023-12-21 21:56:06,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13936 states, 12874 states have (on average 1.3210346434674538) internal successors, (17007), 12940 states have internal predecessors, (17007), 532 states have call successors, (532), 448 states have call predecessors, (532), 528 states have return successors, (696), 548 states have call predecessors, (696), 532 states have call successors, (696) [2023-12-21 21:56:06,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13936 states to 13936 states and 18235 transitions. [2023-12-21 21:56:06,265 INFO L78 Accepts]: Start accepts. Automaton has 13936 states and 18235 transitions. Word has length 151 [2023-12-21 21:56:06,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:56:06,266 INFO L495 AbstractCegarLoop]: Abstraction has 13936 states and 18235 transitions. [2023-12-21 21:56:06,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-21 21:56:06,266 INFO L276 IsEmpty]: Start isEmpty. Operand 13936 states and 18235 transitions. [2023-12-21 21:56:06,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-12-21 21:56:06,272 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:56:06,272 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:56:06,276 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 (25)] Forceful destruction successful, exit code 0 [2023-12-21 21:56:06,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /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 [2023-12-21 21:56:06,473 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:56:06,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:56:06,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1018828398, now seen corresponding path program 1 times [2023-12-21 21:56:06,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:56:06,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [910670361] [2023-12-21 21:56:06,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:56:06,474 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 [2023-12-21 21:56:06,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:56:06,475 INFO L229 MonitoredProcess]: Starting monitored process 26 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) [2023-12-21 21:56:06,476 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 (26)] Waiting until timeout for monitored process [2023-12-21 21:56:06,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:56:06,569 INFO L262 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 21:56:06,571 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:56:06,731 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-21 21:56:06,731 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:56:06,731 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:56:06,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [910670361] [2023-12-21 21:56:06,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [910670361] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:56:06,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:56:06,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:56:06,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291612554] [2023-12-21 21:56:06,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:56:06,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:56:06,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:56:06,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:56:06,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:56:06,733 INFO L87 Difference]: Start difference. First operand 13936 states and 18235 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-21 21:56:08,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:56:08,113 INFO L93 Difference]: Finished difference Result 38101 states and 47255 transitions. [2023-12-21 21:56:08,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:56:08,120 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 153 [2023-12-21 21:56:08,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:56:08,162 INFO L225 Difference]: With dead ends: 38101 [2023-12-21 21:56:08,163 INFO L226 Difference]: Without dead ends: 26299 [2023-12-21 21:56:08,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:56:08,175 INFO L413 NwaCegarLoop]: 4195 mSDtfsCounter, 4258 mSDsluCounter, 4265 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4264 SdHoareTripleChecker+Valid, 8460 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 21:56:08,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4264 Valid, 8460 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 21:56:08,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26299 states. [2023-12-21 21:56:09,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26299 to 25849. [2023-12-21 21:56:09,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25849 states, 23536 states have (on average 1.2631713120326309) internal successors, (29730), 23843 states have internal predecessors, (29730), 999 states have call successors, (999), 832 states have call predecessors, (999), 1312 states have return successors, (1676), 1175 states have call predecessors, (1676), 999 states have call successors, (1676) [2023-12-21 21:56:09,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25849 states to 25849 states and 32405 transitions. [2023-12-21 21:56:09,220 INFO L78 Accepts]: Start accepts. Automaton has 25849 states and 32405 transitions. Word has length 153 [2023-12-21 21:56:09,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:56:09,221 INFO L495 AbstractCegarLoop]: Abstraction has 25849 states and 32405 transitions. [2023-12-21 21:56:09,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-21 21:56:09,221 INFO L276 IsEmpty]: Start isEmpty. Operand 25849 states and 32405 transitions. [2023-12-21 21:56:09,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-12-21 21:56:09,236 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:56:09,236 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:56:09,242 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 (26)] Forceful destruction successful, exit code 0 [2023-12-21 21:56:09,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /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 [2023-12-21 21:56:09,441 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:56:09,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:56:09,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1445382896, now seen corresponding path program 1 times [2023-12-21 21:56:09,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:56:09,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [151301037] [2023-12-21 21:56:09,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:56:09,442 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 [2023-12-21 21:56:09,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:56:09,443 INFO L229 MonitoredProcess]: Starting monitored process 27 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) [2023-12-21 21:56:09,444 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 (27)] Waiting until timeout for monitored process [2023-12-21 21:56:09,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:56:09,541 INFO L262 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 21:56:09,543 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:56:09,566 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-12-21 21:56:09,566 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:56:09,566 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:56:09,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [151301037] [2023-12-21 21:56:09,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [151301037] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:56:09,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:56:09,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 21:56:09,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86237995] [2023-12-21 21:56:09,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:56:09,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 21:56:09,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:56:09,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 21:56:09,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:56:09,570 INFO L87 Difference]: Start difference. First operand 25849 states and 32405 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 21:56:10,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:56:10,590 INFO L93 Difference]: Finished difference Result 49560 states and 60824 transitions. [2023-12-21 21:56:10,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 21:56:10,591 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 153 [2023-12-21 21:56:10,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:56:10,638 INFO L225 Difference]: With dead ends: 49560 [2023-12-21 21:56:10,638 INFO L226 Difference]: Without dead ends: 25844 [2023-12-21 21:56:10,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:56:10,659 INFO L413 NwaCegarLoop]: 4188 mSDtfsCounter, 245 mSDsluCounter, 3957 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 8145 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 21:56:10,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 8145 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 21:56:10,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25844 states. [2023-12-21 21:56:11,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25844 to 25844. [2023-12-21 21:56:11,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25844 states, 23534 states have (on average 1.263108693804708) internal successors, (29726), 23840 states have internal predecessors, (29726), 996 states have call successors, (996), 832 states have call predecessors, (996), 1312 states have return successors, (1672), 1172 states have call predecessors, (1672), 996 states have call successors, (1672) [2023-12-21 21:56:11,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25844 states to 25844 states and 32394 transitions. [2023-12-21 21:56:11,759 INFO L78 Accepts]: Start accepts. Automaton has 25844 states and 32394 transitions. Word has length 153 [2023-12-21 21:56:11,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:56:11,760 INFO L495 AbstractCegarLoop]: Abstraction has 25844 states and 32394 transitions. [2023-12-21 21:56:11,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 21:56:11,760 INFO L276 IsEmpty]: Start isEmpty. Operand 25844 states and 32394 transitions. [2023-12-21 21:56:11,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-21 21:56:11,772 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:56:11,772 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:56:11,777 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 (27)] Forceful destruction successful, exit code 0 [2023-12-21 21:56:11,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /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 [2023-12-21 21:56:11,977 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:56:11,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:56:11,978 INFO L85 PathProgramCache]: Analyzing trace with hash -251413229, now seen corresponding path program 1 times [2023-12-21 21:56:11,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:56:11,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1630455225] [2023-12-21 21:56:11,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:56:11,978 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 [2023-12-21 21:56:11,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:56:11,979 INFO L229 MonitoredProcess]: Starting monitored process 28 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) [2023-12-21 21:56:11,980 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 (28)] Waiting until timeout for monitored process [2023-12-21 21:56:12,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:56:12,076 INFO L262 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 21:56:12,079 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:56:12,247 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-21 21:56:12,247 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:56:12,247 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:56:12,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1630455225] [2023-12-21 21:56:12,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1630455225] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:56:12,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:56:12,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:56:12,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649735049] [2023-12-21 21:56:12,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:56:12,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:56:12,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:56:12,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:56:12,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:56:12,249 INFO L87 Difference]: Start difference. First operand 25844 states and 32394 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-21 21:56:14,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:56:14,239 INFO L93 Difference]: Finished difference Result 69972 states and 85259 transitions. [2023-12-21 21:56:14,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:56:14,242 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 155 [2023-12-21 21:56:14,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:56:14,313 INFO L225 Difference]: With dead ends: 69972 [2023-12-21 21:56:14,313 INFO L226 Difference]: Without dead ends: 46262 [2023-12-21 21:56:14,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:56:14,334 INFO L413 NwaCegarLoop]: 4174 mSDtfsCounter, 4241 mSDsluCounter, 4244 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4247 SdHoareTripleChecker+Valid, 8418 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 21:56:14,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4247 Valid, 8418 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 21:56:14,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46262 states. [2023-12-21 21:56:16,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46262 to 46260. [2023-12-21 21:56:16,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46260 states, 41899 states have (on average 1.2332275233299124) internal successors, (51671), 42510 states have internal predecessors, (51671), 1863 states have call successors, (1863), 1536 states have call predecessors, (1863), 2496 states have return successors, (3227), 2215 states have call predecessors, (3227), 1863 states have call successors, (3227) [2023-12-21 21:56:16,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46260 states to 46260 states and 56761 transitions. [2023-12-21 21:56:16,853 INFO L78 Accepts]: Start accepts. Automaton has 46260 states and 56761 transitions. Word has length 155 [2023-12-21 21:56:16,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:56:16,853 INFO L495 AbstractCegarLoop]: Abstraction has 46260 states and 56761 transitions. [2023-12-21 21:56:16,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-21 21:56:16,854 INFO L276 IsEmpty]: Start isEmpty. Operand 46260 states and 56761 transitions. [2023-12-21 21:56:17,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-21 21:56:17,012 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:56:17,012 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:56:17,023 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 (28)] Forceful destruction successful, exit code 0 [2023-12-21 21:56:17,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /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 [2023-12-21 21:56:17,217 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:56:17,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:56:17,217 INFO L85 PathProgramCache]: Analyzing trace with hash 86874321, now seen corresponding path program 1 times [2023-12-21 21:56:17,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:56:17,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1565954920] [2023-12-21 21:56:17,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:56:17,218 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 [2023-12-21 21:56:17,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:56:17,218 INFO L229 MonitoredProcess]: Starting monitored process 29 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) [2023-12-21 21:56:17,219 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 (29)] Waiting until timeout for monitored process [2023-12-21 21:56:17,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:56:17,313 INFO L262 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 21:56:17,315 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:56:17,329 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-12-21 21:56:17,330 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:56:17,330 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:56:17,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1565954920] [2023-12-21 21:56:17,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1565954920] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:56:17,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:56:17,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 21:56:17,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876832804] [2023-12-21 21:56:17,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:56:17,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 21:56:17,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:56:17,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 21:56:17,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:56:17,332 INFO L87 Difference]: Start difference. First operand 46260 states and 56761 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 21:56:19,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:56:19,248 INFO L93 Difference]: Finished difference Result 90382 states and 109538 transitions. [2023-12-21 21:56:19,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 21:56:19,248 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 155 [2023-12-21 21:56:19,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:56:19,336 INFO L225 Difference]: With dead ends: 90382 [2023-12-21 21:56:19,336 INFO L226 Difference]: Without dead ends: 46256 [2023-12-21 21:56:19,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:56:19,379 INFO L413 NwaCegarLoop]: 4187 mSDtfsCounter, 243 mSDsluCounter, 3957 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 8144 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 21:56:19,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 8144 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 21:56:19,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46256 states. [2023-12-21 21:56:21,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46256 to 46256. [2023-12-21 21:56:21,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46256 states, 41898 states have (on average 1.2332092223972504) internal successors, (51669), 42508 states have internal predecessors, (51669), 1860 states have call successors, (1860), 1536 states have call predecessors, (1860), 2496 states have return successors, (3224), 2212 states have call predecessors, (3224), 1860 states have call successors, (3224) [2023-12-21 21:56:21,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46256 states to 46256 states and 56753 transitions. [2023-12-21 21:56:21,518 INFO L78 Accepts]: Start accepts. Automaton has 46256 states and 56753 transitions. Word has length 155 [2023-12-21 21:56:21,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:56:21,518 INFO L495 AbstractCegarLoop]: Abstraction has 46256 states and 56753 transitions. [2023-12-21 21:56:21,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 21:56:21,518 INFO L276 IsEmpty]: Start isEmpty. Operand 46256 states and 56753 transitions. [2023-12-21 21:56:21,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-21 21:56:21,533 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:56:21,533 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:56:21,537 INFO L552 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 (29)] Ended with exit code 0 [2023-12-21 21:56:21,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /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 [2023-12-21 21:56:21,734 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:56:21,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:56:21,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1649646226, now seen corresponding path program 1 times [2023-12-21 21:56:21,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:56:21,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [538153093] [2023-12-21 21:56:21,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:56:21,735 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 [2023-12-21 21:56:21,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:56:21,737 INFO L229 MonitoredProcess]: Starting monitored process 30 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) [2023-12-21 21:56:21,749 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 (30)] Waiting until timeout for monitored process [2023-12-21 21:56:21,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:56:21,835 INFO L262 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 21:56:21,838 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:56:21,884 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-21 21:56:21,884 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:56:21,884 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:56:21,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [538153093] [2023-12-21 21:56:21,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [538153093] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:56:21,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:56:21,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 21:56:21,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366749631] [2023-12-21 21:56:21,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:56:21,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 21:56:21,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:56:21,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 21:56:21,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:56:21,886 INFO L87 Difference]: Start difference. First operand 46256 states and 56753 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-21 21:56:25,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:56:25,677 INFO L93 Difference]: Finished difference Result 125483 states and 151950 transitions. [2023-12-21 21:56:25,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 21:56:25,678 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 157 [2023-12-21 21:56:25,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:56:25,804 INFO L225 Difference]: With dead ends: 125483 [2023-12-21 21:56:25,804 INFO L226 Difference]: Without dead ends: 63980 [2023-12-21 21:56:25,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:56:25,840 INFO L413 NwaCegarLoop]: 4388 mSDtfsCounter, 205 mSDsluCounter, 4180 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 8568 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:56:25,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 8568 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 21:56:25,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63980 states. [2023-12-21 21:56:28,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63980 to 63980. [2023-12-21 21:56:28,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63980 states, 57862 states have (on average 1.2219072966713906) internal successors, (70702), 58664 states have internal predecessors, (70702), 2660 states have call successors, (2660), 2176 states have call predecessors, (2660), 3456 states have return successors, (4642), 3140 states have call predecessors, (4642), 2660 states have call successors, (4642) [2023-12-21 21:56:28,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63980 states to 63980 states and 78004 transitions. [2023-12-21 21:56:28,917 INFO L78 Accepts]: Start accepts. Automaton has 63980 states and 78004 transitions. Word has length 157 [2023-12-21 21:56:28,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:56:28,918 INFO L495 AbstractCegarLoop]: Abstraction has 63980 states and 78004 transitions. [2023-12-21 21:56:28,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-21 21:56:28,918 INFO L276 IsEmpty]: Start isEmpty. Operand 63980 states and 78004 transitions. [2023-12-21 21:56:28,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2023-12-21 21:56:28,947 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:56:28,947 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:56:28,951 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 (30)] Forceful destruction successful, exit code 0 [2023-12-21 21:56:29,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /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 [2023-12-21 21:56:29,148 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:56:29,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:56:29,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1068712939, now seen corresponding path program 1 times [2023-12-21 21:56:29,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:56:29,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [277577954] [2023-12-21 21:56:29,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:56:29,149 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 [2023-12-21 21:56:29,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:56:29,150 INFO L229 MonitoredProcess]: Starting monitored process 31 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) [2023-12-21 21:56:29,152 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 (31)] Waiting until timeout for monitored process [2023-12-21 21:56:29,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:56:29,426 INFO L262 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 21:56:29,428 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:56:29,562 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-21 21:56:29,563 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:56:29,563 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:56:29,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [277577954] [2023-12-21 21:56:29,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [277577954] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:56:29,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:56:29,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 21:56:29,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69735828] [2023-12-21 21:56:29,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:56:29,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 21:56:29,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:56:29,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 21:56:29,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:56:29,565 INFO L87 Difference]: Start difference. First operand 63980 states and 78004 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 2 states have internal predecessors, (147), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-21 21:56:33,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:56:33,078 INFO L93 Difference]: Finished difference Result 143623 states and 173984 transitions. [2023-12-21 21:56:33,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 21:56:33,079 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 2 states have internal predecessors, (147), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 198 [2023-12-21 21:56:33,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:56:33,249 INFO L225 Difference]: With dead ends: 143623 [2023-12-21 21:56:33,250 INFO L226 Difference]: Without dead ends: 81776 [2023-12-21 21:56:33,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:56:33,309 INFO L413 NwaCegarLoop]: 4187 mSDtfsCounter, 4077 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4077 SdHoareTripleChecker+Valid, 4396 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:56:33,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4077 Valid, 4396 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 21:56:33,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81776 states. [2023-12-21 21:56:37,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81776 to 81680. [2023-12-21 21:56:37,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81680 states, 73786 states have (on average 1.2093079988073618) internal successors, (89230), 74788 states have internal predecessors, (89230), 3460 states have call successors, (3460), 2816 states have call predecessors, (3460), 4432 states have return successors, (5974), 4076 states have call predecessors, (5974), 3460 states have call successors, (5974) [2023-12-21 21:56:37,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81680 states to 81680 states and 98664 transitions. [2023-12-21 21:56:37,346 INFO L78 Accepts]: Start accepts. Automaton has 81680 states and 98664 transitions. Word has length 198 [2023-12-21 21:56:37,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:56:37,346 INFO L495 AbstractCegarLoop]: Abstraction has 81680 states and 98664 transitions. [2023-12-21 21:56:37,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 2 states have internal predecessors, (147), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-21 21:56:37,347 INFO L276 IsEmpty]: Start isEmpty. Operand 81680 states and 98664 transitions. [2023-12-21 21:56:37,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2023-12-21 21:56:37,388 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:56:37,389 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:56:37,393 INFO L552 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 (31)] Ended with exit code 0 [2023-12-21 21:56:37,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /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 [2023-12-21 21:56:37,590 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:56:37,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:56:37,590 INFO L85 PathProgramCache]: Analyzing trace with hash 691052260, now seen corresponding path program 1 times [2023-12-21 21:56:37,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:56:37,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1177376520] [2023-12-21 21:56:37,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:56:37,591 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 [2023-12-21 21:56:37,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:56:37,592 INFO L229 MonitoredProcess]: Starting monitored process 32 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) [2023-12-21 21:56:37,592 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 (32)] Waiting until timeout for monitored process [2023-12-21 21:56:37,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:56:37,709 INFO L262 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:56:37,712 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:56:37,803 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-12-21 21:56:37,803 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:56:37,803 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:56:37,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1177376520] [2023-12-21 21:56:37,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1177376520] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:56:37,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:56:37,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:56:37,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323448412] [2023-12-21 21:56:37,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:56:37,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:56:37,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:56:37,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:56:37,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:56:37,805 INFO L87 Difference]: Start difference. First operand 81680 states and 98664 transitions. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-21 21:56:41,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:56:41,786 INFO L93 Difference]: Finished difference Result 162164 states and 194729 transitions. [2023-12-21 21:56:41,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:56:41,786 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 225 [2023-12-21 21:56:41,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:56:41,932 INFO L225 Difference]: With dead ends: 162164 [2023-12-21 21:56:41,932 INFO L226 Difference]: Without dead ends: 82618 [2023-12-21 21:56:42,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:56:42,002 INFO L413 NwaCegarLoop]: 4134 mSDtfsCounter, 4272 mSDsluCounter, 4235 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4278 SdHoareTripleChecker+Valid, 8369 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 21:56:42,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4278 Valid, 8369 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 21:56:42,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82618 states. [2023-12-21 21:56:45,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82618 to 82618. [2023-12-21 21:56:45,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82618 states, 74628 states have (on average 1.2033821085919494) internal successors, (89806), 75678 states have internal predecessors, (89806), 3460 states have call successors, (3460), 2816 states have call predecessors, (3460), 4528 states have return successors, (5512), 4124 states have call predecessors, (5512), 3460 states have call successors, (5512) [2023-12-21 21:56:45,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82618 states to 82618 states and 98778 transitions. [2023-12-21 21:56:45,984 INFO L78 Accepts]: Start accepts. Automaton has 82618 states and 98778 transitions. Word has length 225 [2023-12-21 21:56:45,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:56:45,984 INFO L495 AbstractCegarLoop]: Abstraction has 82618 states and 98778 transitions. [2023-12-21 21:56:45,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-21 21:56:45,985 INFO L276 IsEmpty]: Start isEmpty. Operand 82618 states and 98778 transitions. [2023-12-21 21:56:46,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2023-12-21 21:56:46,034 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:56:46,034 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:56:46,042 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 (32)] Forceful destruction successful, exit code 0 [2023-12-21 21:56:46,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /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 [2023-12-21 21:56:46,240 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:56:46,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:56:46,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1176791885, now seen corresponding path program 1 times [2023-12-21 21:56:46,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:56:46,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [891264375] [2023-12-21 21:56:46,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:56:46,240 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 [2023-12-21 21:56:46,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:56:46,241 INFO L229 MonitoredProcess]: Starting monitored process 33 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) [2023-12-21 21:56:46,242 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 (33)] Waiting until timeout for monitored process [2023-12-21 21:56:46,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:56:46,359 INFO L262 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 21:56:46,361 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:56:46,390 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-21 21:56:46,390 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:56:46,390 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:56:46,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [891264375] [2023-12-21 21:56:46,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [891264375] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:56:46,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:56:46,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 21:56:46,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598480881] [2023-12-21 21:56:46,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:56:46,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 21:56:46,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:56:46,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 21:56:46,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:56:46,392 INFO L87 Difference]: Start difference. First operand 82618 states and 98778 transitions. Second operand has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-21 21:56:50,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:56:50,134 INFO L93 Difference]: Finished difference Result 145466 states and 173168 transitions. [2023-12-21 21:56:50,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 21:56:50,135 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 226 [2023-12-21 21:56:50,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:56:50,423 INFO L225 Difference]: With dead ends: 145466 [2023-12-21 21:56:50,423 INFO L226 Difference]: Without dead ends: 82620 [2023-12-21 21:56:50,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:56:50,479 INFO L413 NwaCegarLoop]: 4375 mSDtfsCounter, 196 mSDsluCounter, 4181 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 8556 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:56:50,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 8556 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 21:56:50,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82620 states. [2023-12-21 21:56:54,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82620 to 82618. [2023-12-21 21:56:54,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82618 states, 74628 states have (on average 1.202068928552286) internal successors, (89708), 75678 states have internal predecessors, (89708), 3460 states have call successors, (3460), 2816 states have call predecessors, (3460), 4528 states have return successors, (5506), 4124 states have call predecessors, (5506), 3460 states have call successors, (5506) [2023-12-21 21:56:54,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82618 states to 82618 states and 98674 transitions. [2023-12-21 21:56:54,292 INFO L78 Accepts]: Start accepts. Automaton has 82618 states and 98674 transitions. Word has length 226 [2023-12-21 21:56:54,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:56:54,292 INFO L495 AbstractCegarLoop]: Abstraction has 82618 states and 98674 transitions. [2023-12-21 21:56:54,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-21 21:56:54,292 INFO L276 IsEmpty]: Start isEmpty. Operand 82618 states and 98674 transitions. [2023-12-21 21:56:54,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2023-12-21 21:56:54,336 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:56:54,336 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:56:54,340 INFO L552 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 (33)] Ended with exit code 0 [2023-12-21 21:56:54,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /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 [2023-12-21 21:56:54,537 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:56:54,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:56:54,537 INFO L85 PathProgramCache]: Analyzing trace with hash 186401403, now seen corresponding path program 1 times [2023-12-21 21:56:54,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:56:54,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [927185120] [2023-12-21 21:56:54,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:56:54,538 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 [2023-12-21 21:56:54,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:56:54,539 INFO L229 MonitoredProcess]: Starting monitored process 34 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) [2023-12-21 21:56:54,539 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 (34)] Waiting until timeout for monitored process [2023-12-21 21:56:54,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:56:54,824 INFO L262 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 21:56:54,826 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:56:54,980 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 157 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-12-21 21:56:54,980 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:56:54,980 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:56:54,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [927185120] [2023-12-21 21:56:54,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [927185120] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:56:54,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:56:54,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 21:56:54,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863181397] [2023-12-21 21:56:54,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:56:54,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 21:56:54,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:56:54,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 21:56:54,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:56:54,982 INFO L87 Difference]: Start difference. First operand 82618 states and 98674 transitions. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 2 states have internal predecessors, (169), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11)