/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/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.BOUNDED-10.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 17:56:36,062 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 17:56:36,152 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-16 17:56:36,158 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 17:56:36,159 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 17:56:36,189 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 17:56:36,189 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 17:56:36,190 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 17:56:36,190 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 17:56:36,194 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 17:56:36,194 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 17:56:36,194 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 17:56:36,195 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 17:56:36,196 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 17:56:36,196 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 17:56:36,197 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 17:56:36,197 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 17:56:36,197 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 17:56:36,197 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 17:56:36,198 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 17:56:36,198 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 17:56:36,198 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 17:56:36,198 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 17:56:36,199 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 17:56:36,199 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 17:56:36,199 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 17:56:36,199 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 17:56:36,199 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 17:56:36,200 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 17:56:36,200 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 17:56:36,201 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 17:56:36,201 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 17:56:36,201 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 17:56:36,201 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 17:56:36,202 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 17:56:36,202 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 17:56:36,202 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 17:56:36,202 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 17:56:36,202 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 17:56:36,203 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 17:56:36,203 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 17:56:36,203 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 17:56:36,204 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 17:56:36,204 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 17:56:36,204 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 17:56:36,204 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 17:56:36,204 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 17:56:36,443 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 17:56:36,463 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 17:56:36,465 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 17:56:36,466 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 17:56:36,472 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 17:56:36,473 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.BOUNDED-10.pals.c [2023-12-16 17:56:37,657 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 17:56:37,863 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 17:56:37,864 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.BOUNDED-10.pals.c [2023-12-16 17:56:37,877 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97c639a6e/5bb56d36e7b54d1f9653ea79ced43944/FLAG4ae53de84 [2023-12-16 17:56:37,890 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97c639a6e/5bb56d36e7b54d1f9653ea79ced43944 [2023-12-16 17:56:37,892 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 17:56:37,893 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 17:56:37,894 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 17:56:37,894 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 17:56:37,903 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 17:56:37,903 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 05:56:37" (1/1) ... [2023-12-16 17:56:37,904 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@180c2060 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:56:37, skipping insertion in model container [2023-12-16 17:56:37,904 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 05:56:37" (1/1) ... [2023-12-16 17:56:37,944 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 17:56:38,141 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.BOUNDED-10.pals.c[14698,14711] [2023-12-16 17:56:38,151 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 17:56:38,162 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 17:56:38,216 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.BOUNDED-10.pals.c[14698,14711] [2023-12-16 17:56:38,217 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 17:56:38,232 INFO L206 MainTranslator]: Completed translation [2023-12-16 17:56:38,232 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:56:38 WrapperNode [2023-12-16 17:56:38,232 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 17:56:38,233 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 17:56:38,233 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 17:56:38,233 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 17:56:38,238 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:56:38" (1/1) ... [2023-12-16 17:56:38,252 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:56:38" (1/1) ... [2023-12-16 17:56:38,279 INFO L138 Inliner]: procedures = 32, calls = 48, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 479 [2023-12-16 17:56:38,280 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 17:56:38,281 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 17:56:38,281 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 17:56:38,281 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 17:56:38,291 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:56:38" (1/1) ... [2023-12-16 17:56:38,291 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:56:38" (1/1) ... [2023-12-16 17:56:38,297 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:56:38" (1/1) ... [2023-12-16 17:56:38,312 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]. [2023-12-16 17:56:38,312 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:56:38" (1/1) ... [2023-12-16 17:56:38,313 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:56:38" (1/1) ... [2023-12-16 17:56:38,323 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:56:38" (1/1) ... [2023-12-16 17:56:38,329 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:56:38" (1/1) ... [2023-12-16 17:56:38,331 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:56:38" (1/1) ... [2023-12-16 17:56:38,333 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:56:38" (1/1) ... [2023-12-16 17:56:38,338 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 17:56:38,338 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 17:56:38,339 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 17:56:38,339 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 17:56:38,339 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:56:38" (1/1) ... [2023-12-16 17:56:38,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 17:56:38,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 17:56:38,374 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) [2023-12-16 17:56:38,402 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 [2023-12-16 17:56:38,419 INFO L130 BoogieDeclarations]: Found specification of procedure read_manual_selection_history [2023-12-16 17:56:38,420 INFO L138 BoogieDeclarations]: Found implementation of procedure read_manual_selection_history [2023-12-16 17:56:38,420 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 17:56:38,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 17:56:38,420 INFO L130 BoogieDeclarations]: Found specification of procedure read_side2_failed_history [2023-12-16 17:56:38,420 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side2_failed_history [2023-12-16 17:56:38,420 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-12-16 17:56:38,420 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2023-12-16 17:56:38,420 INFO L130 BoogieDeclarations]: Found specification of procedure flip_the_side [2023-12-16 17:56:38,420 INFO L138 BoogieDeclarations]: Found implementation of procedure flip_the_side [2023-12-16 17:56:38,421 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 17:56:38,421 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 17:56:38,421 INFO L130 BoogieDeclarations]: Found specification of procedure read_side1_failed_history [2023-12-16 17:56:38,421 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side1_failed_history [2023-12-16 17:56:38,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 17:56:38,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 17:56:38,422 INFO L130 BoogieDeclarations]: Found specification of procedure read_active_side_history [2023-12-16 17:56:38,422 INFO L138 BoogieDeclarations]: Found implementation of procedure read_active_side_history [2023-12-16 17:56:38,514 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 17:56:38,516 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 17:56:39,005 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 17:56:39,074 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 17:56:39,075 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 17:56:39,075 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 05:56:39 BoogieIcfgContainer [2023-12-16 17:56:39,075 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 17:56:39,077 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 17:56:39,077 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 17:56:39,080 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 17:56:39,080 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 05:56:37" (1/3) ... [2023-12-16 17:56:39,081 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64c71dc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 05:56:39, skipping insertion in model container [2023-12-16 17:56:39,081 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:56:38" (2/3) ... [2023-12-16 17:56:39,081 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64c71dc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 05:56:39, skipping insertion in model container [2023-12-16 17:56:39,081 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 05:56:39" (3/3) ... [2023-12-16 17:56:39,082 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_ActiveStandby.ufo.BOUNDED-10.pals.c [2023-12-16 17:56:39,094 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 17:56:39,095 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 17:56:39,136 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 17:56:39,141 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;@2b58fd7e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 17:56:39,141 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 17:56:39,144 INFO L276 IsEmpty]: Start isEmpty. Operand has 171 states, 131 states have (on average 1.5954198473282444) internal successors, (209), 132 states have internal predecessors, (209), 31 states have call successors, (31), 7 states have call predecessors, (31), 7 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-12-16 17:56:39,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-16 17:56:39,151 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:56:39,152 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] [2023-12-16 17:56:39,152 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:56:39,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:56:39,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1288314428, now seen corresponding path program 1 times [2023-12-16 17:56:39,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:56:39,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [221865149] [2023-12-16 17:56:39,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:56:39,168 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 [2023-12-16 17:56:39,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:56:39,171 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) [2023-12-16 17:56:39,173 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 [2023-12-16 17:56:39,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:56:39,308 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 17:56:39,317 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:56:39,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 17:56:39,340 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:56:39,340 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:56:39,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [221865149] [2023-12-16 17:56:39,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [221865149] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:56:39,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:56:39,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 17:56:39,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132376624] [2023-12-16 17:56:39,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:56:39,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 17:56:39,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:56:39,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 17:56:39,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 17:56:39,387 INFO L87 Difference]: Start difference. First operand has 171 states, 131 states have (on average 1.5954198473282444) internal successors, (209), 132 states have internal predecessors, (209), 31 states have call successors, (31), 7 states have call predecessors, (31), 7 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Second operand has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-16 17:56:39,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:56:39,464 INFO L93 Difference]: Finished difference Result 327 states and 543 transitions. [2023-12-16 17:56:39,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 17:56:39,470 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2023-12-16 17:56:39,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:56:39,481 INFO L225 Difference]: With dead ends: 327 [2023-12-16 17:56:39,481 INFO L226 Difference]: Without dead ends: 169 [2023-12-16 17:56:39,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 17:56:39,492 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 17:56:39,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 262 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 17:56:39,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2023-12-16 17:56:39,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2023-12-16 17:56:39,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 130 states have (on average 1.5692307692307692) internal successors, (204), 130 states have internal predecessors, (204), 31 states have call successors, (31), 7 states have call predecessors, (31), 7 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-12-16 17:56:39,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 266 transitions. [2023-12-16 17:56:39,536 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 266 transitions. Word has length 23 [2023-12-16 17:56:39,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:56:39,536 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 266 transitions. [2023-12-16 17:56:39,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-16 17:56:39,536 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 266 transitions. [2023-12-16 17:56:39,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-16 17:56:39,538 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:56:39,538 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] [2023-12-16 17:56:39,548 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 [2023-12-16 17:56:39,741 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 [2023-12-16 17:56:39,741 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:56:39,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:56:39,742 INFO L85 PathProgramCache]: Analyzing trace with hash -705830278, now seen corresponding path program 1 times [2023-12-16 17:56:39,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:56:39,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1886408260] [2023-12-16 17:56:39,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:56:39,743 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 [2023-12-16 17:56:39,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:56:39,745 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) [2023-12-16 17:56:39,748 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 (3)] Waiting until timeout for monitored process [2023-12-16 17:56:39,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:56:39,824 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 17:56:39,826 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:56:39,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 17:56:39,905 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:56:39,906 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:56:39,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1886408260] [2023-12-16 17:56:39,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1886408260] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:56:39,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:56:39,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 17:56:39,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617529073] [2023-12-16 17:56:39,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:56:39,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 17:56:39,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:56:39,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 17:56:39,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 17:56:39,909 INFO L87 Difference]: Start difference. First operand 169 states and 266 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-16 17:56:40,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:56:40,092 INFO L93 Difference]: Finished difference Result 432 states and 688 transitions. [2023-12-16 17:56:40,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 17:56:40,094 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2023-12-16 17:56:40,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:56:40,097 INFO L225 Difference]: With dead ends: 432 [2023-12-16 17:56:40,098 INFO L226 Difference]: Without dead ends: 276 [2023-12-16 17:56:40,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-16 17:56:40,100 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 131 mSDsluCounter, 1002 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 1258 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 17:56:40,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 1258 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 17:56:40,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2023-12-16 17:56:40,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 169. [2023-12-16 17:56:40,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 130 states have (on average 1.476923076923077) internal successors, (192), 130 states have internal predecessors, (192), 31 states have call successors, (31), 7 states have call predecessors, (31), 7 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-12-16 17:56:40,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 254 transitions. [2023-12-16 17:56:40,125 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 254 transitions. Word has length 23 [2023-12-16 17:56:40,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:56:40,125 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 254 transitions. [2023-12-16 17:56:40,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-16 17:56:40,125 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 254 transitions. [2023-12-16 17:56:40,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-16 17:56:40,126 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:56:40,127 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] [2023-12-16 17:56:40,136 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 [2023-12-16 17:56:40,329 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 [2023-12-16 17:56:40,330 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:56:40,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:56:40,330 INFO L85 PathProgramCache]: Analyzing trace with hash 120145863, now seen corresponding path program 1 times [2023-12-16 17:56:40,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:56:40,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1915442204] [2023-12-16 17:56:40,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:56:40,331 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:56:40,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:56:40,333 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) [2023-12-16 17:56:40,336 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 [2023-12-16 17:56:40,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:56:40,414 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 17:56:40,419 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:56:40,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 17:56:40,439 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:56:40,439 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:56:40,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1915442204] [2023-12-16 17:56:40,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1915442204] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:56:40,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:56:40,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 17:56:40,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586628079] [2023-12-16 17:56:40,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:56:40,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 17:56:40,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:56:40,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 17:56:40,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 17:56:40,441 INFO L87 Difference]: Start difference. First operand 169 states and 254 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-16 17:56:40,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:56:40,494 INFO L93 Difference]: Finished difference Result 328 states and 502 transitions. [2023-12-16 17:56:40,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 17:56:40,494 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2023-12-16 17:56:40,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:56:40,497 INFO L225 Difference]: With dead ends: 328 [2023-12-16 17:56:40,497 INFO L226 Difference]: Without dead ends: 175 [2023-12-16 17:56:40,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 17:56:40,499 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 6 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 719 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 17:56:40,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 719 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 17:56:40,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2023-12-16 17:56:40,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 173. [2023-12-16 17:56:40,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 133 states have (on average 1.4661654135338347) internal successors, (195), 133 states have internal predecessors, (195), 31 states have call successors, (31), 8 states have call predecessors, (31), 8 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-12-16 17:56:40,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 257 transitions. [2023-12-16 17:56:40,514 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 257 transitions. Word has length 34 [2023-12-16 17:56:40,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:56:40,514 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 257 transitions. [2023-12-16 17:56:40,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-16 17:56:40,515 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 257 transitions. [2023-12-16 17:56:40,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-12-16 17:56:40,516 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:56:40,516 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 17:56:40,520 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 [2023-12-16 17:56:40,719 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 [2023-12-16 17:56:40,719 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:56:40,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:56:40,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1571991065, now seen corresponding path program 1 times [2023-12-16 17:56:40,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:56:40,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1080213117] [2023-12-16 17:56:40,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:56:40,721 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 [2023-12-16 17:56:40,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:56:40,722 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) [2023-12-16 17:56:40,722 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 [2023-12-16 17:56:40,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:56:40,808 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 17:56:40,811 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:56:40,898 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 17:56:40,898 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:56:40,900 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:56:40,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1080213117] [2023-12-16 17:56:40,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1080213117] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:56:40,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:56:40,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 17:56:40,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558213567] [2023-12-16 17:56:40,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:56:40,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 17:56:40,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:56:40,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 17:56:40,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 17:56:40,907 INFO L87 Difference]: Start difference. First operand 173 states and 257 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 17:56:41,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:56:41,099 INFO L93 Difference]: Finished difference Result 368 states and 555 transitions. [2023-12-16 17:56:41,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 17:56:41,100 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 48 [2023-12-16 17:56:41,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:56:41,103 INFO L225 Difference]: With dead ends: 368 [2023-12-16 17:56:41,103 INFO L226 Difference]: Without dead ends: 211 [2023-12-16 17:56:41,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 17:56:41,108 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 342 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 646 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 17:56:41,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 646 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 17:56:41,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2023-12-16 17:56:41,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 210. [2023-12-16 17:56:41,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 165 states have (on average 1.4727272727272727) internal successors, (243), 165 states have internal predecessors, (243), 34 states have call successors, (34), 10 states have call predecessors, (34), 10 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-16 17:56:41,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 311 transitions. [2023-12-16 17:56:41,145 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 311 transitions. Word has length 48 [2023-12-16 17:56:41,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:56:41,145 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 311 transitions. [2023-12-16 17:56:41,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 17:56:41,145 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 311 transitions. [2023-12-16 17:56:41,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-16 17:56:41,147 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:56:41,147 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 17:56:41,152 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 (5)] Ended with exit code 0 [2023-12-16 17:56:41,352 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 [2023-12-16 17:56:41,353 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:56:41,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:56:41,353 INFO L85 PathProgramCache]: Analyzing trace with hash -956415450, now seen corresponding path program 1 times [2023-12-16 17:56:41,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:56:41,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [608212763] [2023-12-16 17:56:41,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:56:41,354 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 [2023-12-16 17:56:41,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:56:41,355 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) [2023-12-16 17:56:41,357 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 [2023-12-16 17:56:41,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:56:41,444 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 17:56:41,448 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:56:41,530 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 17:56:41,531 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:56:41,531 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:56:41,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [608212763] [2023-12-16 17:56:41,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [608212763] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:56:41,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:56:41,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 17:56:41,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160996995] [2023-12-16 17:56:41,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:56:41,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 17:56:41,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:56:41,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 17:56:41,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 17:56:41,533 INFO L87 Difference]: Start difference. First operand 210 states and 311 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 17:56:41,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:56:41,707 INFO L93 Difference]: Finished difference Result 369 states and 554 transitions. [2023-12-16 17:56:41,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 17:56:41,708 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 49 [2023-12-16 17:56:41,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:56:41,713 INFO L225 Difference]: With dead ends: 369 [2023-12-16 17:56:41,715 INFO L226 Difference]: Without dead ends: 212 [2023-12-16 17:56:41,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 17:56:41,717 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 339 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 648 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 17:56:41,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [339 Valid, 648 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 17:56:41,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2023-12-16 17:56:41,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 211. [2023-12-16 17:56:41,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 166 states have (on average 1.463855421686747) internal successors, (243), 166 states have internal predecessors, (243), 34 states have call successors, (34), 10 states have call predecessors, (34), 10 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-16 17:56:41,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 311 transitions. [2023-12-16 17:56:41,733 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 311 transitions. Word has length 49 [2023-12-16 17:56:41,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:56:41,733 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 311 transitions. [2023-12-16 17:56:41,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 17:56:41,734 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 311 transitions. [2023-12-16 17:56:41,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-16 17:56:41,735 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:56:41,735 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 17:56:41,743 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 [2023-12-16 17:56:41,938 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 [2023-12-16 17:56:41,938 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:56:41,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:56:41,939 INFO L85 PathProgramCache]: Analyzing trace with hash 144601305, now seen corresponding path program 1 times [2023-12-16 17:56:41,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:56:41,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [949312710] [2023-12-16 17:56:41,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:56:41,940 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 [2023-12-16 17:56:41,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:56:41,941 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) [2023-12-16 17:56:41,942 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 [2023-12-16 17:56:42,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:56:42,028 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 17:56:42,030 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:56:42,053 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 17:56:42,053 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:56:42,053 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:56:42,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [949312710] [2023-12-16 17:56:42,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [949312710] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:56:42,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:56:42,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 17:56:42,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062530334] [2023-12-16 17:56:42,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:56:42,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 17:56:42,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:56:42,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 17:56:42,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 17:56:42,055 INFO L87 Difference]: Start difference. First operand 211 states and 311 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 17:56:42,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:56:42,098 INFO L93 Difference]: Finished difference Result 541 states and 806 transitions. [2023-12-16 17:56:42,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 17:56:42,098 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 52 [2023-12-16 17:56:42,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:56:42,101 INFO L225 Difference]: With dead ends: 541 [2023-12-16 17:56:42,101 INFO L226 Difference]: Without dead ends: 384 [2023-12-16 17:56:42,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 17:56:42,102 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 202 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 17:56:42,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 497 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 17:56:42,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2023-12-16 17:56:42,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 380. [2023-12-16 17:56:42,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 294 states have (on average 1.469387755102041) internal successors, (432), 295 states have internal predecessors, (432), 65 states have call successors, (65), 20 states have call predecessors, (65), 20 states have return successors, (65), 64 states have call predecessors, (65), 65 states have call successors, (65) [2023-12-16 17:56:42,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 562 transitions. [2023-12-16 17:56:42,130 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 562 transitions. Word has length 52 [2023-12-16 17:56:42,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:56:42,131 INFO L495 AbstractCegarLoop]: Abstraction has 380 states and 562 transitions. [2023-12-16 17:56:42,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 17:56:42,131 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 562 transitions. [2023-12-16 17:56:42,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-16 17:56:42,132 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:56:42,132 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 17:56:42,140 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 [2023-12-16 17:56:42,335 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 [2023-12-16 17:56:42,335 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:56:42,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:56:42,336 INFO L85 PathProgramCache]: Analyzing trace with hash 2078388309, now seen corresponding path program 1 times [2023-12-16 17:56:42,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:56:42,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1808420249] [2023-12-16 17:56:42,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:56:42,337 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 [2023-12-16 17:56:42,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:56:42,374 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) [2023-12-16 17:56:42,377 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 [2023-12-16 17:56:42,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:56:42,453 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 17:56:42,455 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:56:42,482 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 17:56:42,482 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:56:42,483 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:56:42,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1808420249] [2023-12-16 17:56:42,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1808420249] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:56:42,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:56:42,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 17:56:42,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070990114] [2023-12-16 17:56:42,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:56:42,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 17:56:42,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:56:42,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 17:56:42,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 17:56:42,485 INFO L87 Difference]: Start difference. First operand 380 states and 562 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 17:56:42,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:56:42,562 INFO L93 Difference]: Finished difference Result 978 states and 1458 transitions. [2023-12-16 17:56:42,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 17:56:42,563 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 53 [2023-12-16 17:56:42,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:56:42,566 INFO L225 Difference]: With dead ends: 978 [2023-12-16 17:56:42,566 INFO L226 Difference]: Without dead ends: 679 [2023-12-16 17:56:42,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 17:56:42,568 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 203 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 17:56:42,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 517 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 17:56:42,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2023-12-16 17:56:42,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 673. [2023-12-16 17:56:42,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 673 states, 511 states have (on average 1.4637964774951076) internal successors, (748), 514 states have internal predecessors, (748), 124 states have call successors, (124), 37 states have call predecessors, (124), 37 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2023-12-16 17:56:42,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 996 transitions. [2023-12-16 17:56:42,619 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 996 transitions. Word has length 53 [2023-12-16 17:56:42,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:56:42,620 INFO L495 AbstractCegarLoop]: Abstraction has 673 states and 996 transitions. [2023-12-16 17:56:42,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 17:56:42,620 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 996 transitions. [2023-12-16 17:56:42,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-16 17:56:42,621 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:56:42,622 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 17:56:42,631 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 [2023-12-16 17:56:42,831 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 [2023-12-16 17:56:42,832 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:56:42,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:56:42,832 INFO L85 PathProgramCache]: Analyzing trace with hash 798524631, now seen corresponding path program 1 times [2023-12-16 17:56:42,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:56:42,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [513502208] [2023-12-16 17:56:42,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:56:42,833 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 [2023-12-16 17:56:42,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:56:42,834 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) [2023-12-16 17:56:42,838 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 [2023-12-16 17:56:42,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:56:42,910 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 17:56:42,912 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:56:42,932 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-16 17:56:42,932 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:56:42,932 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:56:42,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [513502208] [2023-12-16 17:56:42,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [513502208] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:56:42,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:56:42,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 17:56:42,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932742554] [2023-12-16 17:56:42,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:56:42,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 17:56:42,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:56:42,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 17:56:42,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 17:56:42,934 INFO L87 Difference]: Start difference. First operand 673 states and 996 transitions. Second operand has 5 states, 4 states have (on average 11.25) internal successors, (45), 5 states have internal predecessors, (45), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-16 17:56:43,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:56:43,007 INFO L93 Difference]: Finished difference Result 1134 states and 1695 transitions. [2023-12-16 17:56:43,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 17:56:43,007 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 11.25) internal successors, (45), 5 states have internal predecessors, (45), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 53 [2023-12-16 17:56:43,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:56:43,010 INFO L225 Difference]: With dead ends: 1134 [2023-12-16 17:56:43,010 INFO L226 Difference]: Without dead ends: 533 [2023-12-16 17:56:43,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 17:56:43,012 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 2 mSDsluCounter, 726 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 972 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 17:56:43,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 972 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 17:56:43,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2023-12-16 17:56:43,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 533. [2023-12-16 17:56:43,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 408 states have (on average 1.4607843137254901) internal successors, (596), 410 states have internal predecessors, (596), 95 states have call successors, (95), 29 states have call predecessors, (95), 29 states have return successors, (95), 93 states have call predecessors, (95), 95 states have call successors, (95) [2023-12-16 17:56:43,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 786 transitions. [2023-12-16 17:56:43,045 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 786 transitions. Word has length 53 [2023-12-16 17:56:43,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:56:43,045 INFO L495 AbstractCegarLoop]: Abstraction has 533 states and 786 transitions. [2023-12-16 17:56:43,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 11.25) internal successors, (45), 5 states have internal predecessors, (45), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-16 17:56:43,045 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 786 transitions. [2023-12-16 17:56:43,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-16 17:56:43,046 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:56:43,046 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 17:56:43,051 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 (9)] Ended with exit code 0 [2023-12-16 17:56:43,249 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 [2023-12-16 17:56:43,249 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:56:43,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:56:43,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1137275170, now seen corresponding path program 1 times [2023-12-16 17:56:43,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:56:43,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [93605863] [2023-12-16 17:56:43,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:56:43,250 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 [2023-12-16 17:56:43,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:56:43,251 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) [2023-12-16 17:56:43,252 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 [2023-12-16 17:56:43,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:56:43,330 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 17:56:43,331 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:56:43,346 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 17:56:43,347 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:56:43,347 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:56:43,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [93605863] [2023-12-16 17:56:43,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [93605863] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:56:43,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:56:43,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 17:56:43,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944807285] [2023-12-16 17:56:43,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:56:43,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 17:56:43,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:56:43,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 17:56:43,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 17:56:43,349 INFO L87 Difference]: Start difference. First operand 533 states and 786 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-16 17:56:43,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:56:43,409 INFO L93 Difference]: Finished difference Result 994 states and 1482 transitions. [2023-12-16 17:56:43,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 17:56:43,410 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 54 [2023-12-16 17:56:43,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:56:43,413 INFO L225 Difference]: With dead ends: 994 [2023-12-16 17:56:43,413 INFO L226 Difference]: Without dead ends: 554 [2023-12-16 17:56:43,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 17:56:43,415 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 7 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 732 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 17:56:43,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 732 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 17:56:43,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2023-12-16 17:56:43,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 548. [2023-12-16 17:56:43,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 420 states have (on average 1.4476190476190476) internal successors, (608), 422 states have internal predecessors, (608), 95 states have call successors, (95), 32 states have call predecessors, (95), 32 states have return successors, (95), 93 states have call predecessors, (95), 95 states have call successors, (95) [2023-12-16 17:56:43,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 798 transitions. [2023-12-16 17:56:43,450 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 798 transitions. Word has length 54 [2023-12-16 17:56:43,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:56:43,451 INFO L495 AbstractCegarLoop]: Abstraction has 548 states and 798 transitions. [2023-12-16 17:56:43,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-16 17:56:43,472 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 798 transitions. [2023-12-16 17:56:43,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-16 17:56:43,473 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:56:43,474 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 17:56:43,484 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 [2023-12-16 17:56:43,678 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 [2023-12-16 17:56:43,678 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:56:43,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:56:43,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1598658148, now seen corresponding path program 1 times [2023-12-16 17:56:43,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:56:43,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2010626110] [2023-12-16 17:56:43,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:56:43,679 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 [2023-12-16 17:56:43,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:56:43,680 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) [2023-12-16 17:56:43,682 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 [2023-12-16 17:56:43,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:56:43,762 INFO L262 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 17:56:43,764 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:56:43,775 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 17:56:43,775 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:56:43,776 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:56:43,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2010626110] [2023-12-16 17:56:43,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2010626110] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:56:43,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:56:43,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 17:56:43,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990940707] [2023-12-16 17:56:43,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:56:43,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 17:56:43,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:56:43,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 17:56:43,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 17:56:43,777 INFO L87 Difference]: Start difference. First operand 548 states and 798 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-16 17:56:43,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:56:43,847 INFO L93 Difference]: Finished difference Result 1024 states and 1521 transitions. [2023-12-16 17:56:43,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 17:56:43,847 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 62 [2023-12-16 17:56:43,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:56:43,850 INFO L225 Difference]: With dead ends: 1024 [2023-12-16 17:56:43,851 INFO L226 Difference]: Without dead ends: 569 [2023-12-16 17:56:43,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 17:56:43,852 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 7 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 17:56:43,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 724 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 17:56:43,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2023-12-16 17:56:43,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 563. [2023-12-16 17:56:43,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 432 states have (on average 1.4351851851851851) internal successors, (620), 434 states have internal predecessors, (620), 95 states have call successors, (95), 35 states have call predecessors, (95), 35 states have return successors, (95), 93 states have call predecessors, (95), 95 states have call successors, (95) [2023-12-16 17:56:43,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 810 transitions. [2023-12-16 17:56:43,886 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 810 transitions. Word has length 62 [2023-12-16 17:56:43,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:56:43,886 INFO L495 AbstractCegarLoop]: Abstraction has 563 states and 810 transitions. [2023-12-16 17:56:43,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-16 17:56:43,886 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 810 transitions. [2023-12-16 17:56:43,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-16 17:56:43,887 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:56:43,887 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 17:56:43,890 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 [2023-12-16 17:56:44,090 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 [2023-12-16 17:56:44,091 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:56:44,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:56:44,091 INFO L85 PathProgramCache]: Analyzing trace with hash -2126250354, now seen corresponding path program 1 times [2023-12-16 17:56:44,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:56:44,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1047334272] [2023-12-16 17:56:44,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:56:44,092 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 [2023-12-16 17:56:44,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:56:44,093 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) [2023-12-16 17:56:44,095 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 [2023-12-16 17:56:44,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:56:44,178 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 17:56:44,180 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:56:44,193 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 17:56:44,194 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:56:44,194 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:56:44,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1047334272] [2023-12-16 17:56:44,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1047334272] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:56:44,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:56:44,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 17:56:44,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162990855] [2023-12-16 17:56:44,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:56:44,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 17:56:44,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:56:44,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 17:56:44,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 17:56:44,195 INFO L87 Difference]: Start difference. First operand 563 states and 810 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-16 17:56:44,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:56:44,260 INFO L93 Difference]: Finished difference Result 1051 states and 1527 transitions. [2023-12-16 17:56:44,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 17:56:44,261 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 70 [2023-12-16 17:56:44,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:56:44,264 INFO L225 Difference]: With dead ends: 1051 [2023-12-16 17:56:44,264 INFO L226 Difference]: Without dead ends: 581 [2023-12-16 17:56:44,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 17:56:44,266 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 6 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 17:56:44,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 724 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 17:56:44,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2023-12-16 17:56:44,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 575. [2023-12-16 17:56:44,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 441 states have (on average 1.4263038548752835) internal successors, (629), 443 states have internal predecessors, (629), 95 states have call successors, (95), 38 states have call predecessors, (95), 38 states have return successors, (95), 93 states have call predecessors, (95), 95 states have call successors, (95) [2023-12-16 17:56:44,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 819 transitions. [2023-12-16 17:56:44,299 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 819 transitions. Word has length 70 [2023-12-16 17:56:44,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:56:44,299 INFO L495 AbstractCegarLoop]: Abstraction has 575 states and 819 transitions. [2023-12-16 17:56:44,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-16 17:56:44,299 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 819 transitions. [2023-12-16 17:56:44,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-16 17:56:44,300 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:56:44,300 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 17:56:44,304 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 [2023-12-16 17:56:44,503 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 [2023-12-16 17:56:44,504 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:56:44,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:56:44,504 INFO L85 PathProgramCache]: Analyzing trace with hash 270208949, now seen corresponding path program 1 times [2023-12-16 17:56:44,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:56:44,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [257290828] [2023-12-16 17:56:44,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:56:44,505 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 [2023-12-16 17:56:44,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:56:44,506 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) [2023-12-16 17:56:44,508 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 [2023-12-16 17:56:44,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:56:44,589 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 17:56:44,591 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:56:44,700 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 17:56:44,700 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:56:44,836 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 17:56:44,837 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:56:44,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [257290828] [2023-12-16 17:56:44,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [257290828] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 17:56:44,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 17:56:44,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 8 [2023-12-16 17:56:44,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600896976] [2023-12-16 17:56:44,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:56:44,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 17:56:44,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:56:44,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 17:56:44,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-16 17:56:44,838 INFO L87 Difference]: Start difference. First operand 575 states and 819 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-16 17:56:45,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:56:45,141 INFO L93 Difference]: Finished difference Result 1623 states and 2350 transitions. [2023-12-16 17:56:45,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 17:56:45,141 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 70 [2023-12-16 17:56:45,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:56:45,148 INFO L225 Difference]: With dead ends: 1623 [2023-12-16 17:56:45,148 INFO L226 Difference]: Without dead ends: 1141 [2023-12-16 17:56:45,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 132 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-12-16 17:56:45,150 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 346 mSDsluCounter, 1162 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 1392 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 17:56:45,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [367 Valid, 1392 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 17:56:45,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1141 states. [2023-12-16 17:56:45,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1141 to 846. [2023-12-16 17:56:45,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 846 states, 637 states have (on average 1.4160125588697017) internal successors, (902), 641 states have internal predecessors, (902), 149 states have call successors, (149), 59 states have call predecessors, (149), 59 states have return successors, (149), 145 states have call predecessors, (149), 149 states have call successors, (149) [2023-12-16 17:56:45,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 846 states to 846 states and 1200 transitions. [2023-12-16 17:56:45,219 INFO L78 Accepts]: Start accepts. Automaton has 846 states and 1200 transitions. Word has length 70 [2023-12-16 17:56:45,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:56:45,219 INFO L495 AbstractCegarLoop]: Abstraction has 846 states and 1200 transitions. [2023-12-16 17:56:45,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-16 17:56:45,219 INFO L276 IsEmpty]: Start isEmpty. Operand 846 states and 1200 transitions. [2023-12-16 17:56:45,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-16 17:56:45,223 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:56:45,224 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 17:56:45,229 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 [2023-12-16 17:56:45,426 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 [2023-12-16 17:56:45,426 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:56:45,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:56:45,427 INFO L85 PathProgramCache]: Analyzing trace with hash 985196798, now seen corresponding path program 1 times [2023-12-16 17:56:45,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:56:45,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1159955727] [2023-12-16 17:56:45,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:56:45,427 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 [2023-12-16 17:56:45,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:56:45,428 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) [2023-12-16 17:56:45,430 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 [2023-12-16 17:56:45,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:56:45,512 INFO L262 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 17:56:45,514 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:56:45,527 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-16 17:56:45,527 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:56:45,527 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:56:45,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1159955727] [2023-12-16 17:56:45,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1159955727] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:56:45,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:56:45,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 17:56:45,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489687548] [2023-12-16 17:56:45,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:56:45,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 17:56:45,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:56:45,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 17:56:45,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 17:56:45,529 INFO L87 Difference]: Start difference. First operand 846 states and 1200 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-16 17:56:45,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:56:45,652 INFO L93 Difference]: Finished difference Result 1583 states and 2292 transitions. [2023-12-16 17:56:45,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 17:56:45,653 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 77 [2023-12-16 17:56:45,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:56:45,658 INFO L225 Difference]: With dead ends: 1583 [2023-12-16 17:56:45,658 INFO L226 Difference]: Without dead ends: 881 [2023-12-16 17:56:45,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 17:56:45,661 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 7 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 17:56:45,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 724 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 17:56:45,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2023-12-16 17:56:45,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 871. [2023-12-16 17:56:45,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 871 states, 657 states have (on average 1.4033485540334856) internal successors, (922), 661 states have internal predecessors, (922), 149 states have call successors, (149), 64 states have call predecessors, (149), 64 states have return successors, (149), 145 states have call predecessors, (149), 149 states have call successors, (149) [2023-12-16 17:56:45,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 871 states to 871 states and 1220 transitions. [2023-12-16 17:56:45,736 INFO L78 Accepts]: Start accepts. Automaton has 871 states and 1220 transitions. Word has length 77 [2023-12-16 17:56:45,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:56:45,736 INFO L495 AbstractCegarLoop]: Abstraction has 871 states and 1220 transitions. [2023-12-16 17:56:45,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-16 17:56:45,736 INFO L276 IsEmpty]: Start isEmpty. Operand 871 states and 1220 transitions. [2023-12-16 17:56:45,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-16 17:56:45,737 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:56:45,737 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 17:56:45,744 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 [2023-12-16 17:56:45,944 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 [2023-12-16 17:56:45,945 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:56:45,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:56:45,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1126374744, now seen corresponding path program 1 times [2023-12-16 17:56:45,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:56:45,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [235894053] [2023-12-16 17:56:45,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:56:45,945 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 [2023-12-16 17:56:45,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:56:45,947 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) [2023-12-16 17:56:45,948 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 [2023-12-16 17:56:46,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:56:46,045 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 17:56:46,047 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:56:46,058 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-16 17:56:46,058 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:56:46,059 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:56:46,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [235894053] [2023-12-16 17:56:46,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [235894053] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:56:46,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:56:46,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 17:56:46,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778910174] [2023-12-16 17:56:46,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:56:46,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 17:56:46,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:56:46,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 17:56:46,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 17:56:46,060 INFO L87 Difference]: Start difference. First operand 871 states and 1220 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-16 17:56:46,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:56:46,143 INFO L93 Difference]: Finished difference Result 1622 states and 2292 transitions. [2023-12-16 17:56:46,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 17:56:46,143 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 85 [2023-12-16 17:56:46,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:56:46,149 INFO L225 Difference]: With dead ends: 1622 [2023-12-16 17:56:46,149 INFO L226 Difference]: Without dead ends: 901 [2023-12-16 17:56:46,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 17:56:46,151 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 6 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 17:56:46,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 724 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 17:56:46,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 901 states. [2023-12-16 17:56:46,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 901 to 891. [2023-12-16 17:56:46,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 891 states, 672 states have (on average 1.3943452380952381) internal successors, (937), 676 states have internal predecessors, (937), 149 states have call successors, (149), 69 states have call predecessors, (149), 69 states have return successors, (149), 145 states have call predecessors, (149), 149 states have call successors, (149) [2023-12-16 17:56:46,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1235 transitions. [2023-12-16 17:56:46,202 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1235 transitions. Word has length 85 [2023-12-16 17:56:46,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:56:46,203 INFO L495 AbstractCegarLoop]: Abstraction has 891 states and 1235 transitions. [2023-12-16 17:56:46,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-16 17:56:46,203 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1235 transitions. [2023-12-16 17:56:46,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-16 17:56:46,204 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:56:46,204 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:56:46,209 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 (15)] Ended with exit code 0 [2023-12-16 17:56:46,407 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 [2023-12-16 17:56:46,407 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:56:46,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:56:46,408 INFO L85 PathProgramCache]: Analyzing trace with hash -2105403419, now seen corresponding path program 1 times [2023-12-16 17:56:46,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:56:46,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1658785327] [2023-12-16 17:56:46,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:56:46,408 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 [2023-12-16 17:56:46,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:56:46,409 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) [2023-12-16 17:56:46,411 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 [2023-12-16 17:56:46,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:56:46,509 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 17:56:46,511 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:56:46,605 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-16 17:56:46,605 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:56:46,686 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-16 17:56:46,687 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:56:46,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1658785327] [2023-12-16 17:56:46,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1658785327] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:56:46,687 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:56:46,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2023-12-16 17:56:46,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491095994] [2023-12-16 17:56:46,687 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:56:46,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 17:56:46,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:56:46,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 17:56:46,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-16 17:56:46,688 INFO L87 Difference]: Start difference. First operand 891 states and 1235 transitions. Second operand has 8 states, 8 states have (on average 10.25) internal successors, (82), 7 states have internal predecessors, (82), 3 states have call successors, (16), 4 states have call predecessors, (16), 6 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-16 17:56:46,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:56:46,991 INFO L93 Difference]: Finished difference Result 1779 states and 2510 transitions. [2023-12-16 17:56:46,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 17:56:46,992 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 7 states have internal predecessors, (82), 3 states have call successors, (16), 4 states have call predecessors, (16), 6 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) Word has length 86 [2023-12-16 17:56:46,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:56:46,997 INFO L225 Difference]: With dead ends: 1779 [2023-12-16 17:56:46,997 INFO L226 Difference]: Without dead ends: 1054 [2023-12-16 17:56:47,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 164 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-12-16 17:56:47,000 INFO L413 NwaCegarLoop]: 332 mSDtfsCounter, 312 mSDsluCounter, 1774 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 2106 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 17:56:47,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 2106 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 17:56:47,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1054 states. [2023-12-16 17:56:47,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1054 to 891. [2023-12-16 17:56:47,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 891 states, 672 states have (on average 1.3913690476190477) internal successors, (935), 676 states have internal predecessors, (935), 149 states have call successors, (149), 69 states have call predecessors, (149), 69 states have return successors, (149), 145 states have call predecessors, (149), 149 states have call successors, (149) [2023-12-16 17:56:47,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1233 transitions. [2023-12-16 17:56:47,058 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1233 transitions. Word has length 86 [2023-12-16 17:56:47,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:56:47,059 INFO L495 AbstractCegarLoop]: Abstraction has 891 states and 1233 transitions. [2023-12-16 17:56:47,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 7 states have internal predecessors, (82), 3 states have call successors, (16), 4 states have call predecessors, (16), 6 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-16 17:56:47,059 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1233 transitions. [2023-12-16 17:56:47,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-16 17:56:47,061 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:56:47,061 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 17:56:47,078 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 [2023-12-16 17:56:47,262 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 [2023-12-16 17:56:47,262 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:56:47,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:56:47,263 INFO L85 PathProgramCache]: Analyzing trace with hash -934830644, now seen corresponding path program 1 times [2023-12-16 17:56:47,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:56:47,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [861364958] [2023-12-16 17:56:47,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:56:47,263 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 [2023-12-16 17:56:47,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:56:47,265 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) [2023-12-16 17:56:47,298 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 [2023-12-16 17:56:47,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:56:47,360 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 17:56:47,362 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:56:47,474 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-16 17:56:47,474 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:56:47,475 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:56:47,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [861364958] [2023-12-16 17:56:47,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [861364958] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:56:47,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:56:47,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 17:56:47,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845827333] [2023-12-16 17:56:47,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:56:47,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 17:56:47,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:56:47,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 17:56:47,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-16 17:56:47,476 INFO L87 Difference]: Start difference. First operand 891 states and 1233 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-16 17:56:47,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:56:47,965 INFO L93 Difference]: Finished difference Result 1761 states and 2506 transitions. [2023-12-16 17:56:47,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 17:56:47,966 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 90 [2023-12-16 17:56:47,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:56:47,972 INFO L225 Difference]: With dead ends: 1761 [2023-12-16 17:56:47,972 INFO L226 Difference]: Without dead ends: 1138 [2023-12-16 17:56:47,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-12-16 17:56:47,975 INFO L413 NwaCegarLoop]: 380 mSDtfsCounter, 535 mSDsluCounter, 1293 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 535 SdHoareTripleChecker+Valid, 1673 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 17:56:47,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [535 Valid, 1673 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 17:56:47,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1138 states. [2023-12-16 17:56:48,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1138 to 883. [2023-12-16 17:56:48,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 663 states have (on average 1.3770739064856712) internal successors, (913), 667 states have internal predecessors, (913), 149 states have call successors, (149), 70 states have call predecessors, (149), 70 states have return successors, (149), 145 states have call predecessors, (149), 149 states have call successors, (149) [2023-12-16 17:56:48,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1211 transitions. [2023-12-16 17:56:48,042 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1211 transitions. Word has length 90 [2023-12-16 17:56:48,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:56:48,042 INFO L495 AbstractCegarLoop]: Abstraction has 883 states and 1211 transitions. [2023-12-16 17:56:48,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-16 17:56:48,042 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1211 transitions. [2023-12-16 17:56:48,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-16 17:56:48,070 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:56:48,071 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 17:56:48,076 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 [2023-12-16 17:56:48,273 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 [2023-12-16 17:56:48,273 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:56:48,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:56:48,274 INFO L85 PathProgramCache]: Analyzing trace with hash 532323454, now seen corresponding path program 1 times [2023-12-16 17:56:48,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:56:48,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2104215802] [2023-12-16 17:56:48,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:56:48,275 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 [2023-12-16 17:56:48,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:56:48,276 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) [2023-12-16 17:56:48,306 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 [2023-12-16 17:56:48,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:56:48,368 INFO L262 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 17:56:48,370 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:56:48,458 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-16 17:56:48,459 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:56:48,459 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:56:48,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2104215802] [2023-12-16 17:56:48,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2104215802] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:56:48,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:56:48,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 17:56:48,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952344051] [2023-12-16 17:56:48,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:56:48,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 17:56:48,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:56:48,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 17:56:48,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-16 17:56:48,461 INFO L87 Difference]: Start difference. First operand 883 states and 1211 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 6 states have internal predecessors, (71), 4 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-16 17:56:48,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:56:48,909 INFO L93 Difference]: Finished difference Result 1874 states and 2645 transitions. [2023-12-16 17:56:48,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 17:56:48,909 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 6 states have internal predecessors, (71), 4 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 91 [2023-12-16 17:56:48,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:56:48,915 INFO L225 Difference]: With dead ends: 1874 [2023-12-16 17:56:48,915 INFO L226 Difference]: Without dead ends: 1251 [2023-12-16 17:56:48,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-12-16 17:56:48,917 INFO L413 NwaCegarLoop]: 507 mSDtfsCounter, 415 mSDsluCounter, 1346 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 1853 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 17:56:48,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [415 Valid, 1853 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 17:56:48,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1251 states. [2023-12-16 17:56:49,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1251 to 998. [2023-12-16 17:56:49,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 998 states, 743 states have (on average 1.3620457604306864) internal successors, (1012), 748 states have internal predecessors, (1012), 172 states have call successors, (172), 82 states have call predecessors, (172), 82 states have return successors, (172), 167 states have call predecessors, (172), 172 states have call successors, (172) [2023-12-16 17:56:49,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 998 states to 998 states and 1356 transitions. [2023-12-16 17:56:49,061 INFO L78 Accepts]: Start accepts. Automaton has 998 states and 1356 transitions. Word has length 91 [2023-12-16 17:56:49,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:56:49,062 INFO L495 AbstractCegarLoop]: Abstraction has 998 states and 1356 transitions. [2023-12-16 17:56:49,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 6 states have internal predecessors, (71), 4 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-16 17:56:49,062 INFO L276 IsEmpty]: Start isEmpty. Operand 998 states and 1356 transitions. [2023-12-16 17:56:49,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-16 17:56:49,064 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:56:49,064 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:56:49,069 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 [2023-12-16 17:56:49,266 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 [2023-12-16 17:56:49,267 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:56:49,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:56:49,268 INFO L85 PathProgramCache]: Analyzing trace with hash 116288217, now seen corresponding path program 1 times [2023-12-16 17:56:49,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:56:49,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1529910816] [2023-12-16 17:56:49,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:56:49,268 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 [2023-12-16 17:56:49,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:56:49,271 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) [2023-12-16 17:56:49,280 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 [2023-12-16 17:56:49,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:56:49,362 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 17:56:49,363 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:56:49,445 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-16 17:56:49,445 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:56:49,445 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:56:49,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1529910816] [2023-12-16 17:56:49,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1529910816] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:56:49,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:56:49,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 17:56:49,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487632740] [2023-12-16 17:56:49,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:56:49,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 17:56:49,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:56:49,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 17:56:49,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-16 17:56:49,448 INFO L87 Difference]: Start difference. First operand 998 states and 1356 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 6 states have internal predecessors, (70), 4 states have call successors, (10), 4 states have call predecessors, (10), 5 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-16 17:56:49,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:56:49,875 INFO L93 Difference]: Finished difference Result 1943 states and 2679 transitions. [2023-12-16 17:56:49,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 17:56:49,875 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 6 states have internal predecessors, (70), 4 states have call successors, (10), 4 states have call predecessors, (10), 5 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 93 [2023-12-16 17:56:49,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:56:49,881 INFO L225 Difference]: With dead ends: 1943 [2023-12-16 17:56:49,881 INFO L226 Difference]: Without dead ends: 1108 [2023-12-16 17:56:49,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2023-12-16 17:56:49,883 INFO L413 NwaCegarLoop]: 342 mSDtfsCounter, 547 mSDsluCounter, 1022 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 547 SdHoareTripleChecker+Valid, 1364 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 17:56:49,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [547 Valid, 1364 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 17:56:49,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1108 states. [2023-12-16 17:56:49,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1108 to 998. [2023-12-16 17:56:49,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 998 states, 743 states have (on average 1.353970390309556) internal successors, (1006), 748 states have internal predecessors, (1006), 172 states have call successors, (172), 82 states have call predecessors, (172), 82 states have return successors, (172), 167 states have call predecessors, (172), 172 states have call successors, (172) [2023-12-16 17:56:49,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 998 states to 998 states and 1350 transitions. [2023-12-16 17:56:49,988 INFO L78 Accepts]: Start accepts. Automaton has 998 states and 1350 transitions. Word has length 93 [2023-12-16 17:56:49,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:56:49,988 INFO L495 AbstractCegarLoop]: Abstraction has 998 states and 1350 transitions. [2023-12-16 17:56:49,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 6 states have internal predecessors, (70), 4 states have call successors, (10), 4 states have call predecessors, (10), 5 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-16 17:56:49,989 INFO L276 IsEmpty]: Start isEmpty. Operand 998 states and 1350 transitions. [2023-12-16 17:56:49,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-16 17:56:49,990 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:56:49,990 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 17:56:49,992 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 [2023-12-16 17:56:50,192 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 [2023-12-16 17:56:50,192 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:56:50,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:56:50,193 INFO L85 PathProgramCache]: Analyzing trace with hash 651346033, now seen corresponding path program 1 times [2023-12-16 17:56:50,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:56:50,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1862318182] [2023-12-16 17:56:50,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:56:50,194 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 [2023-12-16 17:56:50,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:56:50,195 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) [2023-12-16 17:56:50,220 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 [2023-12-16 17:56:50,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:56:50,295 INFO L262 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 17:56:50,297 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:56:50,364 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-16 17:56:50,364 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:56:50,364 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:56:50,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1862318182] [2023-12-16 17:56:50,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1862318182] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:56:50,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:56:50,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 17:56:50,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208255916] [2023-12-16 17:56:50,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:56:50,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 17:56:50,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:56:50,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 17:56:50,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 17:56:50,366 INFO L87 Difference]: Start difference. First operand 998 states and 1350 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-16 17:56:50,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:56:50,577 INFO L93 Difference]: Finished difference Result 2405 states and 3274 transitions. [2023-12-16 17:56:50,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 17:56:50,577 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 92 [2023-12-16 17:56:50,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:56:50,584 INFO L225 Difference]: With dead ends: 2405 [2023-12-16 17:56:50,584 INFO L226 Difference]: Without dead ends: 1795 [2023-12-16 17:56:50,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 17:56:50,586 INFO L413 NwaCegarLoop]: 303 mSDtfsCounter, 167 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 830 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 17:56:50,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 830 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 17:56:50,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1795 states. [2023-12-16 17:56:50,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1795 to 1702. [2023-12-16 17:56:50,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1702 states, 1259 states have (on average 1.3447180301826847) internal successors, (1693), 1269 states have internal predecessors, (1693), 300 states have call successors, (300), 142 states have call predecessors, (300), 142 states have return successors, (300), 290 states have call predecessors, (300), 300 states have call successors, (300) [2023-12-16 17:56:50,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1702 states to 1702 states and 2293 transitions. [2023-12-16 17:56:50,762 INFO L78 Accepts]: Start accepts. Automaton has 1702 states and 2293 transitions. Word has length 92 [2023-12-16 17:56:50,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:56:50,762 INFO L495 AbstractCegarLoop]: Abstraction has 1702 states and 2293 transitions. [2023-12-16 17:56:50,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-16 17:56:50,762 INFO L276 IsEmpty]: Start isEmpty. Operand 1702 states and 2293 transitions. [2023-12-16 17:56:50,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-16 17:56:50,764 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:56:50,764 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:56:50,769 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 [2023-12-16 17:56:50,967 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 [2023-12-16 17:56:50,967 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:56:50,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:56:50,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1778149657, now seen corresponding path program 1 times [2023-12-16 17:56:50,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:56:50,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [627938124] [2023-12-16 17:56:50,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:56:50,968 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 [2023-12-16 17:56:50,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:56:50,969 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) [2023-12-16 17:56:50,988 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 [2023-12-16 17:56:51,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:56:51,063 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 17:56:51,065 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:56:51,193 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-16 17:56:51,194 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:56:51,300 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-12-16 17:56:51,300 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:56:51,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [627938124] [2023-12-16 17:56:51,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [627938124] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 17:56:51,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 17:56:51,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 8 [2023-12-16 17:56:51,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675637484] [2023-12-16 17:56:51,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:56:51,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 17:56:51,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:56:51,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 17:56:51,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-16 17:56:51,302 INFO L87 Difference]: Start difference. First operand 1702 states and 2293 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-16 17:56:51,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:56:51,705 INFO L93 Difference]: Finished difference Result 3180 states and 4315 transitions. [2023-12-16 17:56:51,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 17:56:51,706 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 94 [2023-12-16 17:56:51,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:56:51,715 INFO L225 Difference]: With dead ends: 3180 [2023-12-16 17:56:51,716 INFO L226 Difference]: Without dead ends: 1928 [2023-12-16 17:56:51,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 180 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-12-16 17:56:51,720 INFO L413 NwaCegarLoop]: 364 mSDtfsCounter, 233 mSDsluCounter, 1566 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 1930 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 17:56:51,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 1930 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 17:56:51,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1928 states. [2023-12-16 17:56:51,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1928 to 1702. [2023-12-16 17:56:51,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1702 states, 1259 states have (on average 1.340746624305004) internal successors, (1688), 1269 states have internal predecessors, (1688), 300 states have call successors, (300), 142 states have call predecessors, (300), 142 states have return successors, (300), 290 states have call predecessors, (300), 300 states have call successors, (300) [2023-12-16 17:56:51,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1702 states to 1702 states and 2288 transitions. [2023-12-16 17:56:51,899 INFO L78 Accepts]: Start accepts. Automaton has 1702 states and 2288 transitions. Word has length 94 [2023-12-16 17:56:51,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:56:51,899 INFO L495 AbstractCegarLoop]: Abstraction has 1702 states and 2288 transitions. [2023-12-16 17:56:51,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-16 17:56:51,899 INFO L276 IsEmpty]: Start isEmpty. Operand 1702 states and 2288 transitions. [2023-12-16 17:56:51,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-16 17:56:51,901 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:56:51,901 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 17:56:51,904 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 [2023-12-16 17:56:52,104 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 [2023-12-16 17:56:52,104 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:56:52,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:56:52,105 INFO L85 PathProgramCache]: Analyzing trace with hash -499793690, now seen corresponding path program 1 times [2023-12-16 17:56:52,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:56:52,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1474463623] [2023-12-16 17:56:52,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:56:52,105 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 [2023-12-16 17:56:52,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:56:52,107 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) [2023-12-16 17:56:52,118 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 [2023-12-16 17:56:52,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:56:52,204 INFO L262 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 17:56:52,207 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:56:52,274 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-16 17:56:52,274 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:56:52,275 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:56:52,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1474463623] [2023-12-16 17:56:52,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1474463623] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:56:52,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:56:52,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 17:56:52,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974512555] [2023-12-16 17:56:52,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:56:52,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 17:56:52,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:56:52,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 17:56:52,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 17:56:52,276 INFO L87 Difference]: Start difference. First operand 1702 states and 2288 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-16 17:56:52,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:56:52,543 INFO L93 Difference]: Finished difference Result 3927 states and 5314 transitions. [2023-12-16 17:56:52,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 17:56:52,544 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 94 [2023-12-16 17:56:52,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:56:52,555 INFO L225 Difference]: With dead ends: 3927 [2023-12-16 17:56:52,555 INFO L226 Difference]: Without dead ends: 2736 [2023-12-16 17:56:52,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 17:56:52,559 INFO L413 NwaCegarLoop]: 424 mSDtfsCounter, 176 mSDsluCounter, 653 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 1077 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 17:56:52,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 1077 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 17:56:52,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2736 states. [2023-12-16 17:56:52,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2736 to 2589. [2023-12-16 17:56:52,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2589 states, 1907 states have (on average 1.3282642894598846) internal successors, (2533), 1923 states have internal predecessors, (2533), 464 states have call successors, (464), 217 states have call predecessors, (464), 217 states have return successors, (464), 448 states have call predecessors, (464), 464 states have call successors, (464) [2023-12-16 17:56:52,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2589 states to 2589 states and 3461 transitions. [2023-12-16 17:56:52,824 INFO L78 Accepts]: Start accepts. Automaton has 2589 states and 3461 transitions. Word has length 94 [2023-12-16 17:56:52,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:56:52,824 INFO L495 AbstractCegarLoop]: Abstraction has 2589 states and 3461 transitions. [2023-12-16 17:56:52,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-16 17:56:52,825 INFO L276 IsEmpty]: Start isEmpty. Operand 2589 states and 3461 transitions. [2023-12-16 17:56:52,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-16 17:56:52,827 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:56:52,827 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 17:56:52,833 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 [2023-12-16 17:56:53,030 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 [2023-12-16 17:56:53,030 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:56:53,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:56:53,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1287109644, now seen corresponding path program 1 times [2023-12-16 17:56:53,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:56:53,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1940288488] [2023-12-16 17:56:53,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:56:53,031 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 [2023-12-16 17:56:53,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:56:53,032 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) [2023-12-16 17:56:53,033 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 [2023-12-16 17:56:53,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:56:53,127 INFO L262 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 17:56:53,129 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:56:53,189 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-16 17:56:53,190 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:56:53,190 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:56:53,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1940288488] [2023-12-16 17:56:53,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1940288488] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:56:53,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:56:53,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 17:56:53,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438732082] [2023-12-16 17:56:53,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:56:53,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 17:56:53,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:56:53,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 17:56:53,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 17:56:53,191 INFO L87 Difference]: Start difference. First operand 2589 states and 3461 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-16 17:56:53,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:56:53,477 INFO L93 Difference]: Finished difference Result 4400 states and 5897 transitions. [2023-12-16 17:56:53,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 17:56:53,477 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 94 [2023-12-16 17:56:53,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:56:53,487 INFO L225 Difference]: With dead ends: 4400 [2023-12-16 17:56:53,488 INFO L226 Difference]: Without dead ends: 2134 [2023-12-16 17:56:53,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 17:56:53,496 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 329 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 17:56:53,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 657 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 17:56:53,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2134 states. [2023-12-16 17:56:53,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2134 to 2134. [2023-12-16 17:56:53,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2134 states, 1573 states have (on average 1.3286713286713288) internal successors, (2090), 1586 states have internal predecessors, (2090), 378 states have call successors, (378), 182 states have call predecessors, (378), 182 states have return successors, (378), 365 states have call predecessors, (378), 378 states have call successors, (378) [2023-12-16 17:56:53,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2134 states to 2134 states and 2846 transitions. [2023-12-16 17:56:53,766 INFO L78 Accepts]: Start accepts. Automaton has 2134 states and 2846 transitions. Word has length 94 [2023-12-16 17:56:53,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:56:53,767 INFO L495 AbstractCegarLoop]: Abstraction has 2134 states and 2846 transitions. [2023-12-16 17:56:53,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-16 17:56:53,767 INFO L276 IsEmpty]: Start isEmpty. Operand 2134 states and 2846 transitions. [2023-12-16 17:56:53,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-16 17:56:53,769 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:56:53,769 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:56:53,772 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 [2023-12-16 17:56:53,971 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 [2023-12-16 17:56:53,972 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:56:53,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:56:53,972 INFO L85 PathProgramCache]: Analyzing trace with hash -206058368, now seen corresponding path program 1 times [2023-12-16 17:56:53,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:56:53,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [718323152] [2023-12-16 17:56:53,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:56:53,973 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 [2023-12-16 17:56:53,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:56:53,974 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) [2023-12-16 17:56:54,005 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 [2023-12-16 17:56:54,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:56:54,066 INFO L262 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 17:56:54,068 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:56:54,188 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-16 17:56:54,188 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:56:54,296 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-16 17:56:54,297 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:56:54,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [718323152] [2023-12-16 17:56:54,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [718323152] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 17:56:54,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 17:56:54,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 8 [2023-12-16 17:56:54,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313219134] [2023-12-16 17:56:54,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:56:54,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 17:56:54,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:56:54,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 17:56:54,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-16 17:56:54,298 INFO L87 Difference]: Start difference. First operand 2134 states and 2846 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-16 17:56:54,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:56:54,692 INFO L93 Difference]: Finished difference Result 4370 states and 5932 transitions. [2023-12-16 17:56:54,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 17:56:54,692 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) Word has length 97 [2023-12-16 17:56:54,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:56:54,703 INFO L225 Difference]: With dead ends: 4370 [2023-12-16 17:56:54,703 INFO L226 Difference]: Without dead ends: 2500 [2023-12-16 17:56:54,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 186 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-12-16 17:56:54,707 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 212 mSDsluCounter, 1340 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 1634 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 17:56:54,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 1634 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 17:56:54,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2500 states. [2023-12-16 17:56:54,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2500 to 1947. [2023-12-16 17:56:54,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1947 states, 1438 states have (on average 1.3282336578581364) internal successors, (1910), 1450 states have internal predecessors, (1910), 340 states have call successors, (340), 168 states have call predecessors, (340), 168 states have return successors, (340), 328 states have call predecessors, (340), 340 states have call successors, (340) [2023-12-16 17:56:54,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1947 states to 1947 states and 2590 transitions. [2023-12-16 17:56:54,896 INFO L78 Accepts]: Start accepts. Automaton has 1947 states and 2590 transitions. Word has length 97 [2023-12-16 17:56:54,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:56:54,896 INFO L495 AbstractCegarLoop]: Abstraction has 1947 states and 2590 transitions. [2023-12-16 17:56:54,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-16 17:56:54,897 INFO L276 IsEmpty]: Start isEmpty. Operand 1947 states and 2590 transitions. [2023-12-16 17:56:54,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-16 17:56:54,898 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:56:54,898 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:56:54,904 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 [2023-12-16 17:56:55,101 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 [2023-12-16 17:56:55,101 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:56:55,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:56:55,101 INFO L85 PathProgramCache]: Analyzing trace with hash 378932519, now seen corresponding path program 1 times [2023-12-16 17:56:55,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:56:55,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1514798558] [2023-12-16 17:56:55,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:56:55,102 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 [2023-12-16 17:56:55,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:56:55,103 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) [2023-12-16 17:56:55,103 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 [2023-12-16 17:56:55,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:56:55,192 INFO L262 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 17:56:55,193 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:56:55,254 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-16 17:56:55,254 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:56:55,254 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:56:55,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1514798558] [2023-12-16 17:56:55,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1514798558] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:56:55,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:56:55,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 17:56:55,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062003654] [2023-12-16 17:56:55,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:56:55,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 17:56:55,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:56:55,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 17:56:55,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 17:56:55,256 INFO L87 Difference]: Start difference. First operand 1947 states and 2590 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-16 17:56:55,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:56:55,516 INFO L93 Difference]: Finished difference Result 3579 states and 4777 transitions. [2023-12-16 17:56:55,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 17:56:55,516 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 97 [2023-12-16 17:56:55,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:56:55,527 INFO L225 Difference]: With dead ends: 3579 [2023-12-16 17:56:55,527 INFO L226 Difference]: Without dead ends: 1799 [2023-12-16 17:56:55,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 17:56:55,532 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 305 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 654 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 17:56:55,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 654 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 17:56:55,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1799 states. [2023-12-16 17:56:55,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1799 to 1771. [2023-12-16 17:56:55,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1771 states, 1304 states have (on average 1.322085889570552) internal successors, (1724), 1315 states have internal predecessors, (1724), 311 states have call successors, (311), 155 states have call predecessors, (311), 155 states have return successors, (311), 300 states have call predecessors, (311), 311 states have call successors, (311) [2023-12-16 17:56:55,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1771 states to 1771 states and 2346 transitions. [2023-12-16 17:56:55,716 INFO L78 Accepts]: Start accepts. Automaton has 1771 states and 2346 transitions. Word has length 97 [2023-12-16 17:56:55,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:56:55,716 INFO L495 AbstractCegarLoop]: Abstraction has 1771 states and 2346 transitions. [2023-12-16 17:56:55,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-16 17:56:55,716 INFO L276 IsEmpty]: Start isEmpty. Operand 1771 states and 2346 transitions. [2023-12-16 17:56:55,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-16 17:56:55,717 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:56:55,717 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:56:55,725 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 [2023-12-16 17:56:55,920 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 [2023-12-16 17:56:55,921 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:56:55,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:56:55,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1193198729, now seen corresponding path program 1 times [2023-12-16 17:56:55,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:56:55,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [736996215] [2023-12-16 17:56:55,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:56:55,922 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 [2023-12-16 17:56:55,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:56:55,923 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) [2023-12-16 17:56:55,924 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 [2023-12-16 17:56:56,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:56:56,009 INFO L262 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 17:56:56,011 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:56:56,022 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-16 17:56:56,023 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:56:56,023 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:56:56,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [736996215] [2023-12-16 17:56:56,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [736996215] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:56:56,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:56:56,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 17:56:56,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443969760] [2023-12-16 17:56:56,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:56:56,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 17:56:56,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:56:56,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 17:56:56,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 17:56:56,024 INFO L87 Difference]: Start difference. First operand 1771 states and 2346 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-16 17:56:56,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:56:56,172 INFO L93 Difference]: Finished difference Result 3419 states and 4567 transitions. [2023-12-16 17:56:56,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 17:56:56,173 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 102 [2023-12-16 17:56:56,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:56:56,180 INFO L225 Difference]: With dead ends: 3419 [2023-12-16 17:56:56,180 INFO L226 Difference]: Without dead ends: 1867 [2023-12-16 17:56:56,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 17:56:56,184 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 8 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 729 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 17:56:56,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 729 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 17:56:56,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1867 states. [2023-12-16 17:56:56,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1867 to 1843. [2023-12-16 17:56:56,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1843 states, 1364 states have (on average 1.3079178885630498) internal successors, (1784), 1375 states have internal predecessors, (1784), 311 states have call successors, (311), 167 states have call predecessors, (311), 167 states have return successors, (311), 300 states have call predecessors, (311), 311 states have call successors, (311) [2023-12-16 17:56:56,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1843 states to 1843 states and 2406 transitions. [2023-12-16 17:56:56,421 INFO L78 Accepts]: Start accepts. Automaton has 1843 states and 2406 transitions. Word has length 102 [2023-12-16 17:56:56,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:56:56,422 INFO L495 AbstractCegarLoop]: Abstraction has 1843 states and 2406 transitions. [2023-12-16 17:56:56,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-16 17:56:56,422 INFO L276 IsEmpty]: Start isEmpty. Operand 1843 states and 2406 transitions. [2023-12-16 17:56:56,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-16 17:56:56,423 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:56:56,423 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:56:56,426 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 [2023-12-16 17:56:56,625 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 [2023-12-16 17:56:56,626 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:56:56,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:56:56,627 INFO L85 PathProgramCache]: Analyzing trace with hash -398187162, now seen corresponding path program 1 times [2023-12-16 17:56:56,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:56:56,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1546080818] [2023-12-16 17:56:56,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:56:56,628 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 [2023-12-16 17:56:56,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:56:56,629 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) [2023-12-16 17:56:56,637 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 [2023-12-16 17:56:56,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:56:56,722 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 17:56:56,724 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:56:56,859 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-16 17:56:56,859 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:56:56,967 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-12-16 17:56:56,967 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:56:56,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1546080818] [2023-12-16 17:56:56,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1546080818] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 17:56:56,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 17:56:56,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 8 [2023-12-16 17:56:56,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166766452] [2023-12-16 17:56:56,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:56:56,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 17:56:56,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:56:56,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 17:56:56,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-16 17:56:56,969 INFO L87 Difference]: Start difference. First operand 1843 states and 2406 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-16 17:56:57,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:56:57,275 INFO L93 Difference]: Finished difference Result 3712 states and 4919 transitions. [2023-12-16 17:56:57,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 17:56:57,275 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 105 [2023-12-16 17:56:57,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:56:57,283 INFO L225 Difference]: With dead ends: 3712 [2023-12-16 17:56:57,283 INFO L226 Difference]: Without dead ends: 2052 [2023-12-16 17:56:57,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 202 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-12-16 17:56:57,286 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 193 mSDsluCounter, 1157 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 1394 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 17:56:57,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 1394 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 17:56:57,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2052 states. [2023-12-16 17:56:57,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2052 to 1822. [2023-12-16 17:56:57,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1822 states, 1349 states have (on average 1.3039288361749444) internal successors, (1759), 1360 states have internal predecessors, (1759), 305 states have call successors, (305), 167 states have call predecessors, (305), 167 states have return successors, (305), 294 states have call predecessors, (305), 305 states have call successors, (305) [2023-12-16 17:56:57,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1822 states to 1822 states and 2369 transitions. [2023-12-16 17:56:57,458 INFO L78 Accepts]: Start accepts. Automaton has 1822 states and 2369 transitions. Word has length 105 [2023-12-16 17:56:57,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:56:57,458 INFO L495 AbstractCegarLoop]: Abstraction has 1822 states and 2369 transitions. [2023-12-16 17:56:57,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-16 17:56:57,459 INFO L276 IsEmpty]: Start isEmpty. Operand 1822 states and 2369 transitions. [2023-12-16 17:56:57,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-16 17:56:57,459 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:56:57,460 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:56:57,467 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 [2023-12-16 17:56:57,662 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 [2023-12-16 17:56:57,663 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:56:57,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:56:57,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1289965520, now seen corresponding path program 1 times [2023-12-16 17:56:57,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:56:57,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1352135574] [2023-12-16 17:56:57,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:56:57,664 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 [2023-12-16 17:56:57,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:56:57,665 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) [2023-12-16 17:56:57,695 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 [2023-12-16 17:56:57,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:56:57,754 INFO L262 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 17:56:57,755 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:56:57,778 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-12-16 17:56:57,778 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:56:57,778 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:56:57,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1352135574] [2023-12-16 17:56:57,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1352135574] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:56:57,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:56:57,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 17:56:57,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872224376] [2023-12-16 17:56:57,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:56:57,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 17:56:57,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:56:57,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 17:56:57,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 17:56:57,779 INFO L87 Difference]: Start difference. First operand 1822 states and 2369 transitions. Second operand has 6 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-12-16 17:56:58,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:56:58,117 INFO L93 Difference]: Finished difference Result 2593 states and 3573 transitions. [2023-12-16 17:56:58,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 17:56:58,118 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 108 [2023-12-16 17:56:58,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:56:58,143 INFO L225 Difference]: With dead ends: 2593 [2023-12-16 17:56:58,143 INFO L226 Difference]: Without dead ends: 2591 [2023-12-16 17:56:58,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-16 17:56:58,144 INFO L413 NwaCegarLoop]: 341 mSDtfsCounter, 182 mSDsluCounter, 1254 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 1595 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 17:56:58,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 1595 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 17:56:58,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2591 states. [2023-12-16 17:56:58,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2591 to 1817. [2023-12-16 17:56:58,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1817 states, 1342 states have (on average 1.3055141579731744) internal successors, (1752), 1354 states have internal predecessors, (1752), 306 states have call successors, (306), 168 states have call predecessors, (306), 168 states have return successors, (306), 294 states have call predecessors, (306), 306 states have call successors, (306) [2023-12-16 17:56:58,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1817 states to 1817 states and 2364 transitions. [2023-12-16 17:56:58,331 INFO L78 Accepts]: Start accepts. Automaton has 1817 states and 2364 transitions. Word has length 108 [2023-12-16 17:56:58,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:56:58,333 INFO L495 AbstractCegarLoop]: Abstraction has 1817 states and 2364 transitions. [2023-12-16 17:56:58,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-12-16 17:56:58,334 INFO L276 IsEmpty]: Start isEmpty. Operand 1817 states and 2364 transitions. [2023-12-16 17:56:58,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-16 17:56:58,336 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:56:58,336 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:56:58,343 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 [2023-12-16 17:56:58,539 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 [2023-12-16 17:56:58,539 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:56:58,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:56:58,540 INFO L85 PathProgramCache]: Analyzing trace with hash -16675168, now seen corresponding path program 1 times [2023-12-16 17:56:58,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:56:58,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1239882145] [2023-12-16 17:56:58,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:56:58,540 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 [2023-12-16 17:56:58,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:56:58,541 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) [2023-12-16 17:56:58,572 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 [2023-12-16 17:56:58,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:56:58,630 INFO L262 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 17:56:58,632 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:56:58,785 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-16 17:56:58,785 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:56:58,929 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-12-16 17:56:58,930 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:56:58,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1239882145] [2023-12-16 17:56:58,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1239882145] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 17:56:58,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 17:56:58,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2023-12-16 17:56:58,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261471834] [2023-12-16 17:56:58,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:56:58,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 17:56:58,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:56:58,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 17:56:58,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-12-16 17:56:58,932 INFO L87 Difference]: Start difference. First operand 1817 states and 2364 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-16 17:56:59,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:56:59,214 INFO L93 Difference]: Finished difference Result 3436 states and 4518 transitions. [2023-12-16 17:56:59,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 17:56:59,214 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 111 [2023-12-16 17:56:59,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:56:59,221 INFO L225 Difference]: With dead ends: 3436 [2023-12-16 17:56:59,221 INFO L226 Difference]: Without dead ends: 1841 [2023-12-16 17:56:59,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2023-12-16 17:56:59,225 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 155 mSDsluCounter, 1178 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 1425 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 17:56:59,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 1425 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 17:56:59,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1841 states. [2023-12-16 17:56:59,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1841 to 1615. [2023-12-16 17:56:59,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1615 states, 1198 states have (on average 1.2971619365609348) internal successors, (1554), 1209 states have internal predecessors, (1554), 268 states have call successors, (268), 148 states have call predecessors, (268), 148 states have return successors, (268), 257 states have call predecessors, (268), 268 states have call successors, (268) [2023-12-16 17:56:59,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1615 states to 1615 states and 2090 transitions. [2023-12-16 17:56:59,373 INFO L78 Accepts]: Start accepts. Automaton has 1615 states and 2090 transitions. Word has length 111 [2023-12-16 17:56:59,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:56:59,376 INFO L495 AbstractCegarLoop]: Abstraction has 1615 states and 2090 transitions. [2023-12-16 17:56:59,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-16 17:56:59,376 INFO L276 IsEmpty]: Start isEmpty. Operand 1615 states and 2090 transitions. [2023-12-16 17:56:59,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-12-16 17:56:59,383 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:56:59,383 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:56:59,386 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 [2023-12-16 17:56:59,585 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 [2023-12-16 17:56:59,586 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:56:59,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:56:59,586 INFO L85 PathProgramCache]: Analyzing trace with hash -928820832, now seen corresponding path program 1 times [2023-12-16 17:56:59,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:56:59,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1729072904] [2023-12-16 17:56:59,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:56:59,587 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 [2023-12-16 17:56:59,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:56:59,588 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) [2023-12-16 17:56:59,589 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 [2023-12-16 17:56:59,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:56:59,718 INFO L262 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-16 17:56:59,722 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:57:00,112 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 72 proven. 10 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-16 17:57:00,112 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:57:00,377 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2023-12-16 17:57:00,377 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:57:00,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1729072904] [2023-12-16 17:57:00,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1729072904] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:57:00,378 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:57:00,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2023-12-16 17:57:00,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404817681] [2023-12-16 17:57:00,378 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:57:00,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-16 17:57:00,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:57:00,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-16 17:57:00,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-12-16 17:57:00,380 INFO L87 Difference]: Start difference. First operand 1615 states and 2090 transitions. Second operand has 14 states, 14 states have (on average 13.928571428571429) internal successors, (195), 14 states have internal predecessors, (195), 7 states have call successors, (35), 5 states have call predecessors, (35), 5 states have return successors, (34), 7 states have call predecessors, (34), 7 states have call successors, (34) [2023-12-16 17:57:01,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:57:01,713 INFO L93 Difference]: Finished difference Result 3468 states and 4551 transitions. [2023-12-16 17:57:01,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-16 17:57:01,714 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 13.928571428571429) internal successors, (195), 14 states have internal predecessors, (195), 7 states have call successors, (35), 5 states have call predecessors, (35), 5 states have return successors, (34), 7 states have call predecessors, (34), 7 states have call successors, (34) Word has length 167 [2023-12-16 17:57:01,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:57:01,719 INFO L225 Difference]: With dead ends: 3468 [2023-12-16 17:57:01,719 INFO L226 Difference]: Without dead ends: 2083 [2023-12-16 17:57:01,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 329 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=302, Invalid=1030, Unknown=0, NotChecked=0, Total=1332 [2023-12-16 17:57:01,722 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 1234 mSDsluCounter, 1762 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 359 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1234 SdHoareTripleChecker+Valid, 2027 SdHoareTripleChecker+Invalid, 1082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 359 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 17:57:01,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1234 Valid, 2027 Invalid, 1082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [359 Valid, 723 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 17:57:01,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2083 states. [2023-12-16 17:57:01,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2083 to 1957. [2023-12-16 17:57:01,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1957 states, 1450 states have (on average 1.296551724137931) internal successors, (1880), 1463 states have internal predecessors, (1880), 323 states have call successors, (323), 183 states have call predecessors, (323), 183 states have return successors, (323), 310 states have call predecessors, (323), 323 states have call successors, (323) [2023-12-16 17:57:01,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1957 states to 1957 states and 2526 transitions. [2023-12-16 17:57:01,939 INFO L78 Accepts]: Start accepts. Automaton has 1957 states and 2526 transitions. Word has length 167 [2023-12-16 17:57:01,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:57:01,939 INFO L495 AbstractCegarLoop]: Abstraction has 1957 states and 2526 transitions. [2023-12-16 17:57:01,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 13.928571428571429) internal successors, (195), 14 states have internal predecessors, (195), 7 states have call successors, (35), 5 states have call predecessors, (35), 5 states have return successors, (34), 7 states have call predecessors, (34), 7 states have call successors, (34) [2023-12-16 17:57:01,940 INFO L276 IsEmpty]: Start isEmpty. Operand 1957 states and 2526 transitions. [2023-12-16 17:57:01,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-12-16 17:57:01,943 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:57:01,943 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:57:01,948 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 [2023-12-16 17:57:02,146 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 [2023-12-16 17:57:02,147 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:57:02,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:57:02,147 INFO L85 PathProgramCache]: Analyzing trace with hash 597461266, now seen corresponding path program 1 times [2023-12-16 17:57:02,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:57:02,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2075522886] [2023-12-16 17:57:02,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:57:02,148 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 [2023-12-16 17:57:02,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:57:02,149 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) [2023-12-16 17:57:02,180 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 [2023-12-16 17:57:02,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:57:02,285 INFO L262 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-16 17:57:02,288 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:57:02,631 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 72 proven. 13 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-16 17:57:02,631 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:57:02,905 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 19 proven. 5 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2023-12-16 17:57:02,905 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:57:02,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2075522886] [2023-12-16 17:57:02,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2075522886] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:57:02,905 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:57:02,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2023-12-16 17:57:02,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435200762] [2023-12-16 17:57:02,906 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:57:02,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-16 17:57:02,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:57:02,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-16 17:57:02,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-12-16 17:57:02,908 INFO L87 Difference]: Start difference. First operand 1957 states and 2526 transitions. Second operand has 14 states, 14 states have (on average 14.142857142857142) internal successors, (198), 14 states have internal predecessors, (198), 7 states have call successors, (35), 5 states have call predecessors, (35), 5 states have return successors, (34), 7 states have call predecessors, (34), 7 states have call successors, (34) [2023-12-16 17:57:04,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:57:04,316 INFO L93 Difference]: Finished difference Result 3764 states and 4925 transitions. [2023-12-16 17:57:04,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-16 17:57:04,316 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 14.142857142857142) internal successors, (198), 14 states have internal predecessors, (198), 7 states have call successors, (35), 5 states have call predecessors, (35), 5 states have return successors, (34), 7 states have call predecessors, (34), 7 states have call successors, (34) Word has length 168 [2023-12-16 17:57:04,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:57:04,322 INFO L225 Difference]: With dead ends: 3764 [2023-12-16 17:57:04,322 INFO L226 Difference]: Without dead ends: 2048 [2023-12-16 17:57:04,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 327 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=222, Invalid=770, Unknown=0, NotChecked=0, Total=992 [2023-12-16 17:57:04,325 INFO L413 NwaCegarLoop]: 457 mSDtfsCounter, 985 mSDsluCounter, 2782 mSDsCounter, 0 mSdLazyCounter, 1167 mSolverCounterSat, 261 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 985 SdHoareTripleChecker+Valid, 3239 SdHoareTripleChecker+Invalid, 1428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 261 IncrementalHoareTripleChecker+Valid, 1167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-16 17:57:04,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [985 Valid, 3239 Invalid, 1428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [261 Valid, 1167 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-16 17:57:04,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2048 states. [2023-12-16 17:57:04,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2048 to 1992. [2023-12-16 17:57:04,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1992 states, 1483 states have (on average 1.2960215778826703) internal successors, (1922), 1496 states have internal predecessors, (1922), 324 states have call successors, (324), 184 states have call predecessors, (324), 184 states have return successors, (324), 311 states have call predecessors, (324), 324 states have call successors, (324) [2023-12-16 17:57:04,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1992 states to 1992 states and 2570 transitions. [2023-12-16 17:57:04,551 INFO L78 Accepts]: Start accepts. Automaton has 1992 states and 2570 transitions. Word has length 168 [2023-12-16 17:57:04,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:57:04,551 INFO L495 AbstractCegarLoop]: Abstraction has 1992 states and 2570 transitions. [2023-12-16 17:57:04,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 14.142857142857142) internal successors, (198), 14 states have internal predecessors, (198), 7 states have call successors, (35), 5 states have call predecessors, (35), 5 states have return successors, (34), 7 states have call predecessors, (34), 7 states have call successors, (34) [2023-12-16 17:57:04,552 INFO L276 IsEmpty]: Start isEmpty. Operand 1992 states and 2570 transitions. [2023-12-16 17:57:04,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2023-12-16 17:57:04,555 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:57:04,555 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:57:04,558 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 [2023-12-16 17:57:04,758 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 [2023-12-16 17:57:04,758 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:57:04,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:57:04,759 INFO L85 PathProgramCache]: Analyzing trace with hash 573760613, now seen corresponding path program 1 times [2023-12-16 17:57:04,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:57:04,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1177341747] [2023-12-16 17:57:04,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:57:04,760 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 [2023-12-16 17:57:04,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:57:04,761 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) [2023-12-16 17:57:04,788 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 [2023-12-16 17:57:04,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:57:04,902 INFO L262 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 17:57:04,905 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:57:05,073 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 62 proven. 20 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-16 17:57:05,073 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:57:05,234 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 13 proven. 8 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2023-12-16 17:57:05,235 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:57:05,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1177341747] [2023-12-16 17:57:05,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1177341747] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:57:05,235 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:57:05,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2023-12-16 17:57:05,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009888829] [2023-12-16 17:57:05,235 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:57:05,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-16 17:57:05,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:57:05,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-16 17:57:05,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-16 17:57:05,237 INFO L87 Difference]: Start difference. First operand 1992 states and 2570 transitions. Second operand has 10 states, 10 states have (on average 20.6) internal successors, (206), 10 states have internal predecessors, (206), 7 states have call successors, (35), 5 states have call predecessors, (35), 5 states have return successors, (34), 7 states have call predecessors, (34), 7 states have call successors, (34) [2023-12-16 17:57:05,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:57:05,878 INFO L93 Difference]: Finished difference Result 3935 states and 5144 transitions. [2023-12-16 17:57:05,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-16 17:57:05,879 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 20.6) internal successors, (206), 10 states have internal predecessors, (206), 7 states have call successors, (35), 5 states have call predecessors, (35), 5 states have return successors, (34), 7 states have call predecessors, (34), 7 states have call successors, (34) Word has length 169 [2023-12-16 17:57:05,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:57:05,885 INFO L225 Difference]: With dead ends: 3935 [2023-12-16 17:57:05,885 INFO L226 Difference]: Without dead ends: 2184 [2023-12-16 17:57:05,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 330 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2023-12-16 17:57:05,889 INFO L413 NwaCegarLoop]: 351 mSDtfsCounter, 993 mSDsluCounter, 943 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 319 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 993 SdHoareTripleChecker+Valid, 1294 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 319 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 17:57:05,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [993 Valid, 1294 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [319 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 17:57:05,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2184 states. [2023-12-16 17:57:06,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2184 to 2164. [2023-12-16 17:57:06,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2164 states, 1627 states have (on average 1.2944068838352796) internal successors, (2106), 1640 states have internal predecessors, (2106), 338 states have call successors, (338), 198 states have call predecessors, (338), 198 states have return successors, (338), 325 states have call predecessors, (338), 338 states have call successors, (338) [2023-12-16 17:57:06,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2164 states to 2164 states and 2782 transitions. [2023-12-16 17:57:06,151 INFO L78 Accepts]: Start accepts. Automaton has 2164 states and 2782 transitions. Word has length 169 [2023-12-16 17:57:06,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:57:06,151 INFO L495 AbstractCegarLoop]: Abstraction has 2164 states and 2782 transitions. [2023-12-16 17:57:06,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 20.6) internal successors, (206), 10 states have internal predecessors, (206), 7 states have call successors, (35), 5 states have call predecessors, (35), 5 states have return successors, (34), 7 states have call predecessors, (34), 7 states have call successors, (34) [2023-12-16 17:57:06,152 INFO L276 IsEmpty]: Start isEmpty. Operand 2164 states and 2782 transitions. [2023-12-16 17:57:06,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2023-12-16 17:57:06,155 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:57:06,155 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:57:06,163 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 [2023-12-16 17:57:06,358 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 [2023-12-16 17:57:06,358 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:57:06,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:57:06,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1591541234, now seen corresponding path program 1 times [2023-12-16 17:57:06,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:57:06,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [148194687] [2023-12-16 17:57:06,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:57:06,359 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 [2023-12-16 17:57:06,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:57:06,360 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) [2023-12-16 17:57:06,361 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 [2023-12-16 17:57:06,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:57:06,494 INFO L262 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-16 17:57:06,497 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:57:06,655 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 62 proven. 21 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-16 17:57:06,656 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:57:06,835 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2023-12-16 17:57:06,836 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:57:06,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [148194687] [2023-12-16 17:57:06,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [148194687] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:57:06,836 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:57:06,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-12-16 17:57:06,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348205477] [2023-12-16 17:57:06,836 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:57:06,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-16 17:57:06,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:57:06,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-16 17:57:06,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-12-16 17:57:06,838 INFO L87 Difference]: Start difference. First operand 2164 states and 2782 transitions. Second operand has 13 states, 13 states have (on average 16.0) internal successors, (208), 13 states have internal predecessors, (208), 7 states have call successors, (35), 5 states have call predecessors, (35), 5 states have return successors, (34), 7 states have call predecessors, (34), 7 states have call successors, (34) [2023-12-16 17:57:07,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:57:07,895 INFO L93 Difference]: Finished difference Result 4612 states and 6006 transitions. [2023-12-16 17:57:07,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-16 17:57:07,895 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 16.0) internal successors, (208), 13 states have internal predecessors, (208), 7 states have call successors, (35), 5 states have call predecessors, (35), 5 states have return successors, (34), 7 states have call predecessors, (34), 7 states have call successors, (34) Word has length 170 [2023-12-16 17:57:07,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:57:07,901 INFO L225 Difference]: With dead ends: 4612 [2023-12-16 17:57:07,901 INFO L226 Difference]: Without dead ends: 2689 [2023-12-16 17:57:07,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=190, Invalid=566, Unknown=0, NotChecked=0, Total=756 [2023-12-16 17:57:07,904 INFO L413 NwaCegarLoop]: 402 mSDtfsCounter, 942 mSDsluCounter, 1286 mSDsCounter, 0 mSdLazyCounter, 686 mSolverCounterSat, 223 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 942 SdHoareTripleChecker+Valid, 1688 SdHoareTripleChecker+Invalid, 909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 223 IncrementalHoareTripleChecker+Valid, 686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 17:57:07,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [942 Valid, 1688 Invalid, 909 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [223 Valid, 686 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 17:57:07,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2689 states. [2023-12-16 17:57:08,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2689 to 2667. [2023-12-16 17:57:08,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2667 states, 2034 states have (on average 1.2964601769911503) internal successors, (2637), 2047 states have internal predecessors, (2637), 391 states have call successors, (391), 241 states have call predecessors, (391), 241 states have return successors, (391), 378 states have call predecessors, (391), 391 states have call successors, (391) [2023-12-16 17:57:08,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2667 states to 2667 states and 3419 transitions. [2023-12-16 17:57:08,346 INFO L78 Accepts]: Start accepts. Automaton has 2667 states and 3419 transitions. Word has length 170 [2023-12-16 17:57:08,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:57:08,346 INFO L495 AbstractCegarLoop]: Abstraction has 2667 states and 3419 transitions. [2023-12-16 17:57:08,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 16.0) internal successors, (208), 13 states have internal predecessors, (208), 7 states have call successors, (35), 5 states have call predecessors, (35), 5 states have return successors, (34), 7 states have call predecessors, (34), 7 states have call successors, (34) [2023-12-16 17:57:08,347 INFO L276 IsEmpty]: Start isEmpty. Operand 2667 states and 3419 transitions. [2023-12-16 17:57:08,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2023-12-16 17:57:08,350 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:57:08,350 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:57:08,354 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 (33)] Forceful destruction successful, exit code 0 [2023-12-16 17:57:08,553 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 [2023-12-16 17:57:08,554 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:57:08,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:57:08,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1373094539, now seen corresponding path program 1 times [2023-12-16 17:57:08,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:57:08,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1867100157] [2023-12-16 17:57:08,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:57:08,554 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 [2023-12-16 17:57:08,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:57:08,555 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) [2023-12-16 17:57:08,556 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 [2023-12-16 17:57:08,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:57:08,677 INFO L262 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 17:57:08,679 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:57:08,755 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-12-16 17:57:08,755 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:57:08,756 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:57:08,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1867100157] [2023-12-16 17:57:08,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1867100157] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:57:08,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:57:08,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 17:57:08,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725075425] [2023-12-16 17:57:08,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:57:08,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 17:57:08,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:57:08,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 17:57:08,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-16 17:57:08,757 INFO L87 Difference]: Start difference. First operand 2667 states and 3419 transitions. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 6 states have internal predecessors, (112), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-16 17:57:09,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:57:09,670 INFO L93 Difference]: Finished difference Result 8397 states and 11150 transitions. [2023-12-16 17:57:09,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 17:57:09,670 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 6 states have internal predecessors, (112), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 173 [2023-12-16 17:57:09,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:57:09,685 INFO L225 Difference]: With dead ends: 8397 [2023-12-16 17:57:09,685 INFO L226 Difference]: Without dead ends: 5982 [2023-12-16 17:57:09,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-12-16 17:57:09,690 INFO L413 NwaCegarLoop]: 364 mSDtfsCounter, 296 mSDsluCounter, 1533 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 1897 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 17:57:09,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 1897 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 17:57:09,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5982 states. [2023-12-16 17:57:10,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5982 to 4043. [2023-12-16 17:57:10,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4043 states, 3024 states have (on average 1.2986111111111112) internal successors, (3927), 3047 states have internal predecessors, (3927), 649 states have call successors, (649), 369 states have call predecessors, (649), 369 states have return successors, (649), 626 states have call predecessors, (649), 649 states have call successors, (649) [2023-12-16 17:57:10,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4043 states to 4043 states and 5225 transitions. [2023-12-16 17:57:10,304 INFO L78 Accepts]: Start accepts. Automaton has 4043 states and 5225 transitions. Word has length 173 [2023-12-16 17:57:10,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:57:10,304 INFO L495 AbstractCegarLoop]: Abstraction has 4043 states and 5225 transitions. [2023-12-16 17:57:10,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 6 states have internal predecessors, (112), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-16 17:57:10,305 INFO L276 IsEmpty]: Start isEmpty. Operand 4043 states and 5225 transitions. [2023-12-16 17:57:10,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-12-16 17:57:10,309 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:57:10,309 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:57:10,317 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 (34)] Forceful destruction successful, exit code 0 [2023-12-16 17:57:10,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /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 [2023-12-16 17:57:10,512 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:57:10,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:57:10,513 INFO L85 PathProgramCache]: Analyzing trace with hash -986140354, now seen corresponding path program 1 times [2023-12-16 17:57:10,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:57:10,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [589365672] [2023-12-16 17:57:10,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:57:10,513 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 [2023-12-16 17:57:10,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:57:10,514 INFO L229 MonitoredProcess]: Starting monitored process 35 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) [2023-12-16 17:57:10,515 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 (35)] Waiting until timeout for monitored process [2023-12-16 17:57:10,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:57:10,628 INFO L262 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 17:57:10,632 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:57:10,724 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 78 proven. 4 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-12-16 17:57:10,724 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:57:10,836 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2023-12-16 17:57:10,836 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:57:10,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [589365672] [2023-12-16 17:57:10,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [589365672] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:57:10,836 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:57:10,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2023-12-16 17:57:10,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314625430] [2023-12-16 17:57:10,837 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:57:10,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 17:57:10,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:57:10,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 17:57:10,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-16 17:57:10,838 INFO L87 Difference]: Start difference. First operand 4043 states and 5225 transitions. Second operand has 8 states, 8 states have (on average 17.75) internal successors, (142), 7 states have internal predecessors, (142), 3 states have call successors, (34), 4 states have call predecessors, (34), 6 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) [2023-12-16 17:57:11,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:57:11,601 INFO L93 Difference]: Finished difference Result 8588 states and 11326 transitions. [2023-12-16 17:57:11,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 17:57:11,601 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.75) internal successors, (142), 7 states have internal predecessors, (142), 3 states have call successors, (34), 4 states have call predecessors, (34), 6 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) Word has length 174 [2023-12-16 17:57:11,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:57:11,617 INFO L225 Difference]: With dead ends: 8588 [2023-12-16 17:57:11,617 INFO L226 Difference]: Without dead ends: 4741 [2023-12-16 17:57:11,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 340 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-12-16 17:57:11,626 INFO L413 NwaCegarLoop]: 336 mSDtfsCounter, 160 mSDsluCounter, 1516 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 1852 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 17:57:11,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 1852 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 17:57:11,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4741 states. [2023-12-16 17:57:12,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4741 to 4043. [2023-12-16 17:57:12,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4043 states, 3024 states have (on average 1.2979497354497354) internal successors, (3925), 3047 states have internal predecessors, (3925), 649 states have call successors, (649), 369 states have call predecessors, (649), 369 states have return successors, (649), 626 states have call predecessors, (649), 649 states have call successors, (649) [2023-12-16 17:57:12,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4043 states to 4043 states and 5223 transitions. [2023-12-16 17:57:12,277 INFO L78 Accepts]: Start accepts. Automaton has 4043 states and 5223 transitions. Word has length 174 [2023-12-16 17:57:12,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:57:12,278 INFO L495 AbstractCegarLoop]: Abstraction has 4043 states and 5223 transitions. [2023-12-16 17:57:12,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.75) internal successors, (142), 7 states have internal predecessors, (142), 3 states have call successors, (34), 4 states have call predecessors, (34), 6 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) [2023-12-16 17:57:12,278 INFO L276 IsEmpty]: Start isEmpty. Operand 4043 states and 5223 transitions. [2023-12-16 17:57:12,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-12-16 17:57:12,284 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:57:12,284 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:57:12,288 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 (35)] Forceful destruction successful, exit code 0 [2023-12-16 17:57:12,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /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 [2023-12-16 17:57:12,488 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:57:12,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:57:12,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1143617125, now seen corresponding path program 1 times [2023-12-16 17:57:12,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:57:12,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1061515848] [2023-12-16 17:57:12,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:57:12,489 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 [2023-12-16 17:57:12,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:57:12,490 INFO L229 MonitoredProcess]: Starting monitored process 36 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) [2023-12-16 17:57:12,491 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 (36)] Waiting until timeout for monitored process [2023-12-16 17:57:12,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:57:12,606 INFO L262 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-16 17:57:12,608 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:57:12,756 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 61 proven. 60 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-16 17:57:12,756 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:57:12,910 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 23 proven. 22 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2023-12-16 17:57:12,910 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:57:12,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1061515848] [2023-12-16 17:57:12,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1061515848] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:57:12,910 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:57:12,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2023-12-16 17:57:12,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588412752] [2023-12-16 17:57:12,910 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:57:12,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-16 17:57:12,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:57:12,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-16 17:57:12,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-16 17:57:12,911 INFO L87 Difference]: Start difference. First operand 4043 states and 5223 transitions. Second operand has 10 states, 10 states have (on average 17.2) internal successors, (172), 9 states have internal predecessors, (172), 6 states have call successors, (35), 5 states have call predecessors, (35), 7 states have return successors, (33), 7 states have call predecessors, (33), 6 states have call successors, (33) [2023-12-16 17:57:14,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:57:14,618 INFO L93 Difference]: Finished difference Result 11789 states and 15574 transitions. [2023-12-16 17:57:14,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-16 17:57:14,619 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 17.2) internal successors, (172), 9 states have internal predecessors, (172), 6 states have call successors, (35), 5 states have call predecessors, (35), 7 states have return successors, (33), 7 states have call predecessors, (33), 6 states have call successors, (33) Word has length 179 [2023-12-16 17:57:14,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:57:14,642 INFO L225 Difference]: With dead ends: 11789 [2023-12-16 17:57:14,642 INFO L226 Difference]: Without dead ends: 7998 [2023-12-16 17:57:14,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 351 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=140, Invalid=412, Unknown=0, NotChecked=0, Total=552 [2023-12-16 17:57:14,650 INFO L413 NwaCegarLoop]: 513 mSDtfsCounter, 803 mSDsluCounter, 2500 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 231 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 808 SdHoareTripleChecker+Valid, 3013 SdHoareTripleChecker+Invalid, 868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 231 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 17:57:14,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [808 Valid, 3013 Invalid, 868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [231 Valid, 637 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 17:57:14,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7998 states. [2023-12-16 17:57:15,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7998 to 6807. [2023-12-16 17:57:15,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6807 states, 5016 states have (on average 1.299043062200957) internal successors, (6516), 5059 states have internal predecessors, (6516), 1165 states have call successors, (1165), 625 states have call predecessors, (1165), 625 states have return successors, (1165), 1122 states have call predecessors, (1165), 1165 states have call successors, (1165) [2023-12-16 17:57:15,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6807 states to 6807 states and 8846 transitions. [2023-12-16 17:57:15,818 INFO L78 Accepts]: Start accepts. Automaton has 6807 states and 8846 transitions. Word has length 179 [2023-12-16 17:57:15,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:57:15,818 INFO L495 AbstractCegarLoop]: Abstraction has 6807 states and 8846 transitions. [2023-12-16 17:57:15,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.2) internal successors, (172), 9 states have internal predecessors, (172), 6 states have call successors, (35), 5 states have call predecessors, (35), 7 states have return successors, (33), 7 states have call predecessors, (33), 6 states have call successors, (33) [2023-12-16 17:57:15,818 INFO L276 IsEmpty]: Start isEmpty. Operand 6807 states and 8846 transitions. [2023-12-16 17:57:15,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-12-16 17:57:15,825 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:57:15,825 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:57:15,836 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 (36)] Forceful destruction successful, exit code 0 [2023-12-16 17:57:16,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /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 [2023-12-16 17:57:16,029 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:57:16,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:57:16,030 INFO L85 PathProgramCache]: Analyzing trace with hash 3630229, now seen corresponding path program 1 times [2023-12-16 17:57:16,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:57:16,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [617428746] [2023-12-16 17:57:16,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:57:16,030 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 [2023-12-16 17:57:16,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:57:16,031 INFO L229 MonitoredProcess]: Starting monitored process 37 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) [2023-12-16 17:57:16,033 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 (37)] Waiting until timeout for monitored process [2023-12-16 17:57:16,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:57:16,150 INFO L262 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-16 17:57:16,153 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:57:16,497 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 82 proven. 11 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-12-16 17:57:16,497 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:57:16,692 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 20 proven. 3 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2023-12-16 17:57:16,692 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:57:16,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [617428746] [2023-12-16 17:57:16,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [617428746] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:57:16,692 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:57:16,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2023-12-16 17:57:16,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231326944] [2023-12-16 17:57:16,692 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:57:16,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-16 17:57:16,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:57:16,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-16 17:57:16,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-12-16 17:57:16,693 INFO L87 Difference]: Start difference. First operand 6807 states and 8846 transitions. Second operand has 14 states, 14 states have (on average 14.5) internal successors, (203), 14 states have internal predecessors, (203), 7 states have call successors, (39), 5 states have call predecessors, (39), 5 states have return successors, (38), 7 states have call predecessors, (38), 7 states have call successors, (38) [2023-12-16 17:57:18,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:57:18,876 INFO L93 Difference]: Finished difference Result 14836 states and 19349 transitions. [2023-12-16 17:57:18,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-16 17:57:18,877 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 14.5) internal successors, (203), 14 states have internal predecessors, (203), 7 states have call successors, (39), 5 states have call predecessors, (39), 5 states have return successors, (38), 7 states have call predecessors, (38), 7 states have call successors, (38) Word has length 181 [2023-12-16 17:57:18,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:57:18,905 INFO L225 Difference]: With dead ends: 14836 [2023-12-16 17:57:18,905 INFO L226 Difference]: Without dead ends: 8281 [2023-12-16 17:57:18,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 353 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=203, Invalid=667, Unknown=0, NotChecked=0, Total=870 [2023-12-16 17:57:18,919 INFO L413 NwaCegarLoop]: 431 mSDtfsCounter, 1602 mSDsluCounter, 1958 mSDsCounter, 0 mSdLazyCounter, 1107 mSolverCounterSat, 488 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1602 SdHoareTripleChecker+Valid, 2389 SdHoareTripleChecker+Invalid, 1595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 488 IncrementalHoareTripleChecker+Valid, 1107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-16 17:57:18,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1602 Valid, 2389 Invalid, 1595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [488 Valid, 1107 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-16 17:57:18,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8281 states. [2023-12-16 17:57:20,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8281 to 7612. [2023-12-16 17:57:20,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7612 states, 5605 states have (on average 1.2988403211418376) internal successors, (7280), 5654 states have internal predecessors, (7280), 1305 states have call successors, (1305), 701 states have call predecessors, (1305), 701 states have return successors, (1305), 1256 states have call predecessors, (1305), 1305 states have call successors, (1305) [2023-12-16 17:57:20,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7612 states to 7612 states and 9890 transitions. [2023-12-16 17:57:20,096 INFO L78 Accepts]: Start accepts. Automaton has 7612 states and 9890 transitions. Word has length 181 [2023-12-16 17:57:20,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:57:20,096 INFO L495 AbstractCegarLoop]: Abstraction has 7612 states and 9890 transitions. [2023-12-16 17:57:20,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 14.5) internal successors, (203), 14 states have internal predecessors, (203), 7 states have call successors, (39), 5 states have call predecessors, (39), 5 states have return successors, (38), 7 states have call predecessors, (38), 7 states have call successors, (38) [2023-12-16 17:57:20,097 INFO L276 IsEmpty]: Start isEmpty. Operand 7612 states and 9890 transitions. [2023-12-16 17:57:20,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-12-16 17:57:20,101 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:57:20,102 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:57:20,107 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 (37)] Forceful destruction successful, exit code 0 [2023-12-16 17:57:20,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /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 [2023-12-16 17:57:20,305 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:57:20,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:57:20,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1176417596, now seen corresponding path program 1 times [2023-12-16 17:57:20,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:57:20,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [227528768] [2023-12-16 17:57:20,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:57:20,306 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:57:20,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:57:20,307 INFO L229 MonitoredProcess]: Starting monitored process 38 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) [2023-12-16 17:57:20,308 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 (38)] Waiting until timeout for monitored process [2023-12-16 17:57:20,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:57:20,435 INFO L262 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 17:57:20,438 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:57:20,507 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-12-16 17:57:20,507 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:57:20,507 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:57:20,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [227528768] [2023-12-16 17:57:20,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [227528768] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:57:20,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:57:20,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 17:57:20,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42105666] [2023-12-16 17:57:20,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:57:20,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 17:57:20,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:57:20,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 17:57:20,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-16 17:57:20,509 INFO L87 Difference]: Start difference. First operand 7612 states and 9890 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 6 states have internal predecessors, (124), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-16 17:57:22,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:57:22,144 INFO L93 Difference]: Finished difference Result 16656 states and 22219 transitions. [2023-12-16 17:57:22,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 17:57:22,144 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 6 states have internal predecessors, (124), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) Word has length 181 [2023-12-16 17:57:22,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:57:22,166 INFO L225 Difference]: With dead ends: 16656 [2023-12-16 17:57:22,167 INFO L226 Difference]: Without dead ends: 9296 [2023-12-16 17:57:22,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-12-16 17:57:22,228 INFO L413 NwaCegarLoop]: 332 mSDtfsCounter, 543 mSDsluCounter, 1027 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 1359 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 17:57:22,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [543 Valid, 1359 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 17:57:22,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9296 states. [2023-12-16 17:57:23,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9296 to 7600. [2023-12-16 17:57:23,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7600 states, 5593 states have (on average 1.2951904165921688) internal successors, (7244), 5642 states have internal predecessors, (7244), 1305 states have call successors, (1305), 701 states have call predecessors, (1305), 701 states have return successors, (1305), 1256 states have call predecessors, (1305), 1305 states have call successors, (1305) [2023-12-16 17:57:23,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7600 states to 7600 states and 9854 transitions. [2023-12-16 17:57:23,445 INFO L78 Accepts]: Start accepts. Automaton has 7600 states and 9854 transitions. Word has length 181 [2023-12-16 17:57:23,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:57:23,446 INFO L495 AbstractCegarLoop]: Abstraction has 7600 states and 9854 transitions. [2023-12-16 17:57:23,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 6 states have internal predecessors, (124), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-16 17:57:23,446 INFO L276 IsEmpty]: Start isEmpty. Operand 7600 states and 9854 transitions. [2023-12-16 17:57:23,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2023-12-16 17:57:23,450 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:57:23,450 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:57:23,453 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 (38)] Ended with exit code 0 [2023-12-16 17:57:23,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /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 [2023-12-16 17:57:23,651 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:57:23,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:57:23,652 INFO L85 PathProgramCache]: Analyzing trace with hash -561326915, now seen corresponding path program 1 times [2023-12-16 17:57:23,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:57:23,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [163506958] [2023-12-16 17:57:23,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:57:23,653 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 [2023-12-16 17:57:23,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:57:23,654 INFO L229 MonitoredProcess]: Starting monitored process 39 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) [2023-12-16 17:57:23,657 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 (39)] Waiting until timeout for monitored process [2023-12-16 17:57:23,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:57:23,769 INFO L262 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-16 17:57:23,776 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:57:24,161 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 79 proven. 12 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-12-16 17:57:24,161 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:57:24,376 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2023-12-16 17:57:24,376 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:57:24,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [163506958] [2023-12-16 17:57:24,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [163506958] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:57:24,376 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:57:24,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2023-12-16 17:57:24,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865627780] [2023-12-16 17:57:24,377 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:57:24,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-16 17:57:24,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:57:24,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-16 17:57:24,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-12-16 17:57:24,378 INFO L87 Difference]: Start difference. First operand 7600 states and 9854 transitions. Second operand has 14 states, 14 states have (on average 14.714285714285714) internal successors, (206), 14 states have internal predecessors, (206), 7 states have call successors, (39), 5 states have call predecessors, (39), 5 states have return successors, (38), 7 states have call predecessors, (38), 7 states have call successors, (38) [2023-12-16 17:57:26,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:57:26,519 INFO L93 Difference]: Finished difference Result 15138 states and 19701 transitions. [2023-12-16 17:57:26,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-16 17:57:26,519 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 14.714285714285714) internal successors, (206), 14 states have internal predecessors, (206), 7 states have call successors, (39), 5 states have call predecessors, (39), 5 states have return successors, (38), 7 states have call predecessors, (38), 7 states have call successors, (38) Word has length 182 [2023-12-16 17:57:26,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:57:26,542 INFO L225 Difference]: With dead ends: 15138 [2023-12-16 17:57:26,542 INFO L226 Difference]: Without dead ends: 7790 [2023-12-16 17:57:26,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 357 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=297, Invalid=1035, Unknown=0, NotChecked=0, Total=1332 [2023-12-16 17:57:26,556 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 1013 mSDsluCounter, 2278 mSDsCounter, 0 mSdLazyCounter, 1182 mSolverCounterSat, 273 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1013 SdHoareTripleChecker+Valid, 2682 SdHoareTripleChecker+Invalid, 1455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 273 IncrementalHoareTripleChecker+Valid, 1182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-16 17:57:26,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1013 Valid, 2682 Invalid, 1455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [273 Valid, 1182 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-16 17:57:26,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7790 states. [2023-12-16 17:57:27,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7790 to 7636. [2023-12-16 17:57:27,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7636 states, 5627 states have (on average 1.2951839346010308) internal successors, (7288), 5676 states have internal predecessors, (7288), 1306 states have call successors, (1306), 702 states have call predecessors, (1306), 702 states have return successors, (1306), 1257 states have call predecessors, (1306), 1306 states have call successors, (1306) [2023-12-16 17:57:27,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7636 states to 7636 states and 9900 transitions. [2023-12-16 17:57:27,709 INFO L78 Accepts]: Start accepts. Automaton has 7636 states and 9900 transitions. Word has length 182 [2023-12-16 17:57:27,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:57:27,709 INFO L495 AbstractCegarLoop]: Abstraction has 7636 states and 9900 transitions. [2023-12-16 17:57:27,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 14.714285714285714) internal successors, (206), 14 states have internal predecessors, (206), 7 states have call successors, (39), 5 states have call predecessors, (39), 5 states have return successors, (38), 7 states have call predecessors, (38), 7 states have call successors, (38) [2023-12-16 17:57:27,709 INFO L276 IsEmpty]: Start isEmpty. Operand 7636 states and 9900 transitions. [2023-12-16 17:57:27,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2023-12-16 17:57:27,713 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:57:27,713 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:57:27,716 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 (39)] Forceful destruction successful, exit code 0 [2023-12-16 17:57:27,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /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 [2023-12-16 17:57:27,914 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:57:27,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:57:27,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1303472848, now seen corresponding path program 1 times [2023-12-16 17:57:27,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:57:27,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [32227328] [2023-12-16 17:57:27,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:57:27,915 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 [2023-12-16 17:57:27,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:57:27,916 INFO L229 MonitoredProcess]: Starting monitored process 40 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) [2023-12-16 17:57:27,916 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 (40)] Waiting until timeout for monitored process [2023-12-16 17:57:28,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:57:28,034 INFO L262 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 17:57:28,037 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:57:28,117 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-12-16 17:57:28,118 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:57:28,118 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:57:28,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [32227328] [2023-12-16 17:57:28,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [32227328] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:57:28,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:57:28,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 17:57:28,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007904771] [2023-12-16 17:57:28,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:57:28,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 17:57:28,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:57:28,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 17:57:28,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-16 17:57:28,119 INFO L87 Difference]: Start difference. First operand 7636 states and 9900 transitions. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 6 states have internal predecessors, (121), 3 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-16 17:57:29,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:57:29,612 INFO L93 Difference]: Finished difference Result 15788 states and 20721 transitions. [2023-12-16 17:57:29,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 17:57:29,613 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 6 states have internal predecessors, (121), 3 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) Word has length 183 [2023-12-16 17:57:29,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:57:29,639 INFO L225 Difference]: With dead ends: 15788 [2023-12-16 17:57:29,639 INFO L226 Difference]: Without dead ends: 8376 [2023-12-16 17:57:29,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2023-12-16 17:57:29,651 INFO L413 NwaCegarLoop]: 439 mSDtfsCounter, 497 mSDsluCounter, 1197 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 497 SdHoareTripleChecker+Valid, 1636 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 17:57:29,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [497 Valid, 1636 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 17:57:29,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8376 states. [2023-12-16 17:57:30,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8376 to 7636. [2023-12-16 17:57:30,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7636 states, 5627 states have (on average 1.292162786564777) internal successors, (7271), 5676 states have internal predecessors, (7271), 1306 states have call successors, (1306), 702 states have call predecessors, (1306), 702 states have return successors, (1306), 1257 states have call predecessors, (1306), 1306 states have call successors, (1306) [2023-12-16 17:57:30,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7636 states to 7636 states and 9883 transitions. [2023-12-16 17:57:30,966 INFO L78 Accepts]: Start accepts. Automaton has 7636 states and 9883 transitions. Word has length 183 [2023-12-16 17:57:30,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:57:30,966 INFO L495 AbstractCegarLoop]: Abstraction has 7636 states and 9883 transitions. [2023-12-16 17:57:30,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 6 states have internal predecessors, (121), 3 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-16 17:57:30,967 INFO L276 IsEmpty]: Start isEmpty. Operand 7636 states and 9883 transitions. [2023-12-16 17:57:30,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2023-12-16 17:57:30,970 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:57:30,970 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:57:30,973 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 (40)] Ended with exit code 0 [2023-12-16 17:57:31,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /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 [2023-12-16 17:57:31,171 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:57:31,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:57:31,172 INFO L85 PathProgramCache]: Analyzing trace with hash -321691567, now seen corresponding path program 1 times [2023-12-16 17:57:31,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:57:31,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [874140646] [2023-12-16 17:57:31,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:57:31,172 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 [2023-12-16 17:57:31,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:57:31,173 INFO L229 MonitoredProcess]: Starting monitored process 41 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) [2023-12-16 17:57:31,174 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 (41)] Waiting until timeout for monitored process [2023-12-16 17:57:31,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:57:31,292 INFO L262 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 17:57:31,295 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:57:31,369 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-12-16 17:57:31,369 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:57:31,369 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:57:31,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [874140646] [2023-12-16 17:57:31,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [874140646] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:57:31,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:57:31,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 17:57:31,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672429268] [2023-12-16 17:57:31,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:57:31,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 17:57:31,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:57:31,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 17:57:31,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 17:57:31,370 INFO L87 Difference]: Start difference. First operand 7636 states and 9883 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 3 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-16 17:57:32,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:57:32,727 INFO L93 Difference]: Finished difference Result 16899 states and 21984 transitions. [2023-12-16 17:57:32,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 17:57:32,728 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 3 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 183 [2023-12-16 17:57:32,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:57:32,745 INFO L225 Difference]: With dead ends: 16899 [2023-12-16 17:57:32,745 INFO L226 Difference]: Without dead ends: 9515 [2023-12-16 17:57:32,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 17:57:32,754 INFO L413 NwaCegarLoop]: 420 mSDtfsCounter, 178 mSDsluCounter, 646 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 1066 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 17:57:32,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 1066 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 17:57:32,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9515 states. [2023-12-16 17:57:34,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9515 to 8990. [2023-12-16 17:57:34,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8990 states, 6618 states have (on average 1.2917799939558778) internal successors, (8549), 6676 states have internal predecessors, (8549), 1547 states have call successors, (1547), 824 states have call predecessors, (1547), 824 states have return successors, (1547), 1489 states have call predecessors, (1547), 1547 states have call successors, (1547) [2023-12-16 17:57:34,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8990 states to 8990 states and 11643 transitions. [2023-12-16 17:57:34,030 INFO L78 Accepts]: Start accepts. Automaton has 8990 states and 11643 transitions. Word has length 183 [2023-12-16 17:57:34,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:57:34,031 INFO L495 AbstractCegarLoop]: Abstraction has 8990 states and 11643 transitions. [2023-12-16 17:57:34,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 3 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-16 17:57:34,031 INFO L276 IsEmpty]: Start isEmpty. Operand 8990 states and 11643 transitions. [2023-12-16 17:57:34,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2023-12-16 17:57:34,035 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:57:34,036 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:57:34,038 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 (41)] Ended with exit code 0 [2023-12-16 17:57:34,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /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 [2023-12-16 17:57:34,236 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:57:34,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:57:34,237 INFO L85 PathProgramCache]: Analyzing trace with hash 64967096, now seen corresponding path program 1 times [2023-12-16 17:57:34,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:57:34,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1673262981] [2023-12-16 17:57:34,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:57:34,238 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 [2023-12-16 17:57:34,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:57:34,239 INFO L229 MonitoredProcess]: Starting monitored process 42 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) [2023-12-16 17:57:34,240 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 (42)] Waiting until timeout for monitored process [2023-12-16 17:57:34,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:57:34,366 INFO L262 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-16 17:57:34,368 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:57:34,517 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 39 proven. 56 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-16 17:57:34,517 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:57:34,648 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 13 proven. 16 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-12-16 17:57:34,648 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:57:34,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1673262981] [2023-12-16 17:57:34,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1673262981] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:57:34,648 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:57:34,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2023-12-16 17:57:34,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082394102] [2023-12-16 17:57:34,648 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:57:34,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-16 17:57:34,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:57:34,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-16 17:57:34,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-16 17:57:34,649 INFO L87 Difference]: Start difference. First operand 8990 states and 11643 transitions. Second operand has 10 states, 10 states have (on average 16.9) internal successors, (169), 9 states have internal predecessors, (169), 6 states have call successors, (38), 5 states have call predecessors, (38), 7 states have return successors, (37), 7 states have call predecessors, (37), 6 states have call successors, (37) [2023-12-16 17:57:36,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:57:36,367 INFO L93 Difference]: Finished difference Result 18051 states and 23319 transitions. [2023-12-16 17:57:36,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-16 17:57:36,367 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 16.9) internal successors, (169), 9 states have internal predecessors, (169), 6 states have call successors, (38), 5 states have call predecessors, (38), 7 states have return successors, (37), 7 states have call predecessors, (37), 6 states have call successors, (37) Word has length 184 [2023-12-16 17:57:36,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:57:36,387 INFO L225 Difference]: With dead ends: 18051 [2023-12-16 17:57:36,387 INFO L226 Difference]: Without dead ends: 9313 [2023-12-16 17:57:36,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 365 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=342, Unknown=0, NotChecked=0, Total=462 [2023-12-16 17:57:36,401 INFO L413 NwaCegarLoop]: 459 mSDtfsCounter, 823 mSDsluCounter, 1740 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 827 SdHoareTripleChecker+Valid, 2199 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 17:57:36,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [827 Valid, 2199 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 17:57:36,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9313 states. [2023-12-16 17:57:37,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9313 to 7045. [2023-12-16 17:57:37,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7045 states, 5222 states have (on average 1.2870547682880122) internal successors, (6721), 5267 states have internal predecessors, (6721), 1169 states have call successors, (1169), 653 states have call predecessors, (1169), 653 states have return successors, (1169), 1124 states have call predecessors, (1169), 1169 states have call successors, (1169) [2023-12-16 17:57:37,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7045 states to 7045 states and 9059 transitions. [2023-12-16 17:57:37,572 INFO L78 Accepts]: Start accepts. Automaton has 7045 states and 9059 transitions. Word has length 184 [2023-12-16 17:57:37,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:57:37,572 INFO L495 AbstractCegarLoop]: Abstraction has 7045 states and 9059 transitions. [2023-12-16 17:57:37,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.9) internal successors, (169), 9 states have internal predecessors, (169), 6 states have call successors, (38), 5 states have call predecessors, (38), 7 states have return successors, (37), 7 states have call predecessors, (37), 6 states have call successors, (37) [2023-12-16 17:57:37,573 INFO L276 IsEmpty]: Start isEmpty. Operand 7045 states and 9059 transitions. [2023-12-16 17:57:37,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2023-12-16 17:57:37,576 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:57:37,576 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:57:37,578 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 (42)] Ended with exit code 0 [2023-12-16 17:57:37,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /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 [2023-12-16 17:57:37,778 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:57:37,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:57:37,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1990945621, now seen corresponding path program 1 times [2023-12-16 17:57:37,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:57:37,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1904893106] [2023-12-16 17:57:37,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:57:37,779 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 [2023-12-16 17:57:37,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:57:37,780 INFO L229 MonitoredProcess]: Starting monitored process 43 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) [2023-12-16 17:57:37,780 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 (43)] Waiting until timeout for monitored process [2023-12-16 17:57:37,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:57:37,921 INFO L262 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-16 17:57:37,924 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:57:38,076 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 63 proven. 63 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-16 17:57:38,077 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:57:38,238 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 19 proven. 18 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2023-12-16 17:57:38,239 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:57:38,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1904893106] [2023-12-16 17:57:38,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1904893106] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:57:38,239 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:57:38,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2023-12-16 17:57:38,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130111341] [2023-12-16 17:57:38,239 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:57:38,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-16 17:57:38,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:57:38,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-16 17:57:38,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-16 17:57:38,241 INFO L87 Difference]: Start difference. First operand 7045 states and 9059 transitions. Second operand has 10 states, 10 states have (on average 17.7) internal successors, (177), 9 states have internal predecessors, (177), 6 states have call successors, (37), 5 states have call predecessors, (37), 7 states have return successors, (35), 7 states have call predecessors, (35), 6 states have call successors, (35) Received shutdown request... [2023-12-16 17:57:39,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-16 17:57:39,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 370 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=342, Unknown=0, NotChecked=0, Total=462 [2023-12-16 17:57:39,191 INFO L413 NwaCegarLoop]: 379 mSDtfsCounter, 671 mSDsluCounter, 1596 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 672 SdHoareTripleChecker+Valid, 1975 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 17:57:39,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [672 Valid, 1975 Invalid, 611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 17:57:39,191 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 17:57:39,195 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 (43)] Ended with exit code 0 [2023-12-16 17:57:39,205 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 17:57:39,233 WARN L340 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 (43)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 17:57:39,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /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 [2023-12-16 17:57:39,393 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (7045states) and FLOYD_HOARE automaton (currently 16 states, 10 states before enhancement),while ReachableStatesComputation was computing reachable states (7861 states constructed, input type IntersectNwa). [2023-12-16 17:57:39,397 INFO L445 BasicCegarLoop]: Path program 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] [2023-12-16 17:57:39,399 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 17:57:39,401 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 05:57:39 BoogieIcfgContainer [2023-12-16 17:57:39,401 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 17:57:39,404 INFO L158 Benchmark]: Toolchain (without parser) took 61508.81ms. Allocated memory was 194.0MB in the beginning and 2.5GB in the end (delta: 2.3GB). Free memory was 148.9MB in the beginning and 1.2GB in the end (delta: -1.0GB). Peak memory consumption was 1.3GB. Max. memory is 8.0GB. [2023-12-16 17:57:39,404 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 194.0MB. Free memory is still 151.3MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 17:57:39,404 INFO L158 Benchmark]: CACSL2BoogieTranslator took 338.41ms. Allocated memory is still 194.0MB. Free memory was 148.4MB in the beginning and 129.6MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2023-12-16 17:57:39,404 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.89ms. Allocated memory is still 194.0MB. Free memory was 129.6MB in the beginning and 126.4MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-16 17:57:39,405 INFO L158 Benchmark]: Boogie Preprocessor took 57.05ms. Allocated memory is still 194.0MB. Free memory was 126.4MB in the beginning and 122.7MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-16 17:57:39,405 INFO L158 Benchmark]: RCFGBuilder took 736.83ms. Allocated memory is still 194.0MB. Free memory was 122.7MB in the beginning and 161.3MB in the end (delta: -38.7MB). Peak memory consumption was 42.5MB. Max. memory is 8.0GB. [2023-12-16 17:57:39,405 INFO L158 Benchmark]: TraceAbstraction took 60324.34ms. Allocated memory was 194.0MB in the beginning and 2.5GB in the end (delta: 2.3GB). Free memory was 160.8MB in the beginning and 1.2GB in the end (delta: -993.9MB). Peak memory consumption was 1.3GB. Max. memory is 8.0GB. [2023-12-16 17:57:39,406 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 194.0MB. Free memory is still 151.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 338.41ms. Allocated memory is still 194.0MB. Free memory was 148.4MB in the beginning and 129.6MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 46.89ms. Allocated memory is still 194.0MB. Free memory was 129.6MB in the beginning and 126.4MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 57.05ms. Allocated memory is still 194.0MB. Free memory was 126.4MB in the beginning and 122.7MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 736.83ms. Allocated memory is still 194.0MB. Free memory was 122.7MB in the beginning and 161.3MB in the end (delta: -38.7MB). Peak memory consumption was 42.5MB. Max. memory is 8.0GB. * TraceAbstraction took 60324.34ms. Allocated memory was 194.0MB in the beginning and 2.5GB in the end (delta: 2.3GB). Free memory was 160.8MB in the beginning and 1.2GB in the end (delta: -993.9MB). Peak memory consumption was 1.3GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 619]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 619). Cancelled while NwaCegarLoop was constructing difference of abstraction (7045states) and FLOYD_HOARE automaton (currently 16 states, 10 states before enhancement),while ReachableStatesComputation was computing reachable states (7861 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 171 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 60.3s, OverallIterations: 42, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 26.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 16285 SdHoareTripleChecker+Valid, 8.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 16113 mSDsluCounter, 57776 SdHoareTripleChecker+Invalid, 7.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 44336 mSDsCounter, 3468 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 10166 IncrementalHoareTripleChecker+Invalid, 13634 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3468 mSolverCounterUnsat, 13440 mSDtfsCounter, 10166 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7157 GetRequests, 6709 SyntacticMatches, 22 SemanticMatches, 426 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1454 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8990occurred in iteration=40, InterpolantAutomatonStates: 383, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 13.7s AutomataMinimizationTime, 41 MinimizatonAttempts, 13640 StatesRemovedByMinimization, 38 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.1s SsaConstructionTime, 1.7s SatisfiabilityAnalysisTime, 7.1s InterpolantComputationTime, 4588 NumberOfCodeBlocks, 4588 NumberOfCodeBlocksAsserted, 42 NumberOfCheckSat, 6854 ConstructedInterpolants, 0 QuantifiedInterpolants, 21213 SizeOfPredicates, 76 NumberOfNonLiveVariables, 11075 ConjunctsInSsa, 225 ConjunctsInUnsatCore, 58 InterpolantComputations, 31 PerfectInterpolantSequences, 3223/3616 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown