/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/pals_lcr.5.1.ufo.BOUNDED-10.pals+Problem12_label02.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 07:54:21,171 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 07:54:21,240 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 07:54:21,246 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 07:54:21,246 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 07:54:21,268 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 07:54:21,268 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 07:54:21,268 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 07:54:21,269 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 07:54:21,272 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 07:54:21,272 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 07:54:21,273 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 07:54:21,273 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 07:54:21,274 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 07:54:21,274 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 07:54:21,274 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 07:54:21,274 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 07:54:21,275 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 07:54:21,275 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 07:54:21,276 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 07:54:21,276 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 07:54:21,276 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 07:54:21,276 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 07:54:21,277 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 07:54:21,277 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 07:54:21,277 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 07:54:21,277 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 07:54:21,277 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 07:54:21,277 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 07:54:21,277 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 07:54:21,278 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 07:54:21,278 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 07:54:21,278 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 07:54:21,278 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 07:54:21,279 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 07:54:21,279 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 07:54:21,279 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 07:54:21,279 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 07:54:21,279 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 07:54:21,279 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 07:54:21,279 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 07:54:21,280 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 07:54:21,280 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 07:54:21,280 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 07:54:21,280 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 07:54:21,280 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 07:54:21,280 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 07:54:21,518 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 07:54:21,534 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 07:54:21,536 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 07:54:21,537 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 07:54:21,538 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 07:54:21,539 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.5.1.ufo.BOUNDED-10.pals+Problem12_label02.c [2023-12-16 07:54:22,656 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 07:54:23,054 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 07:54:23,054 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.5.1.ufo.BOUNDED-10.pals+Problem12_label02.c [2023-12-16 07:54:23,082 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a58040f0/dd616895284a44fab4d12ee5ab408ad3/FLAG94ad340f1 [2023-12-16 07:54:23,095 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a58040f0/dd616895284a44fab4d12ee5ab408ad3 [2023-12-16 07:54:23,097 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 07:54:23,098 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 07:54:23,100 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 07:54:23,100 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 07:54:23,104 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 07:54:23,104 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 07:54:23" (1/1) ... [2023-12-16 07:54:23,105 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@259eebbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:54:23, skipping insertion in model container [2023-12-16 07:54:23,105 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 07:54:23" (1/1) ... [2023-12-16 07:54:23,208 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 07:54:23,572 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.5.1.ufo.BOUNDED-10.pals+Problem12_label02.c[11677,11690] [2023-12-16 07:54:23,634 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.5.1.ufo.BOUNDED-10.pals+Problem12_label02.c[18967,18980] [2023-12-16 07:54:24,251 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 07:54:24,263 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 07:54:24,299 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.5.1.ufo.BOUNDED-10.pals+Problem12_label02.c[11677,11690] [2023-12-16 07:54:24,308 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.5.1.ufo.BOUNDED-10.pals+Problem12_label02.c[18967,18980] [2023-12-16 07:54:24,607 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 07:54:24,628 INFO L206 MainTranslator]: Completed translation [2023-12-16 07:54:24,628 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:54:24 WrapperNode [2023-12-16 07:54:24,628 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 07:54:24,629 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 07:54:24,629 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 07:54:24,629 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 07:54:24,633 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:54:24" (1/1) ... [2023-12-16 07:54:24,748 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:54:24" (1/1) ... [2023-12-16 07:54:24,873 INFO L138 Inliner]: procedures = 37, calls = 22, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 5070 [2023-12-16 07:54:24,873 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 07:54:24,873 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 07:54:24,874 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 07:54:24,874 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 07:54:24,881 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:54:24" (1/1) ... [2023-12-16 07:54:24,881 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:54:24" (1/1) ... [2023-12-16 07:54:24,902 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:54:24" (1/1) ... [2023-12-16 07:54:24,963 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 07:54:24,963 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:54:24" (1/1) ... [2023-12-16 07:54:24,963 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:54:24" (1/1) ... [2023-12-16 07:54:25,030 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:54:24" (1/1) ... [2023-12-16 07:54:25,053 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:54:24" (1/1) ... [2023-12-16 07:54:25,084 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:54:24" (1/1) ... [2023-12-16 07:54:25,102 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:54:24" (1/1) ... [2023-12-16 07:54:25,145 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 07:54:25,146 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 07:54:25,147 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 07:54:25,147 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 07:54:25,148 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:54:24" (1/1) ... [2023-12-16 07:54:25,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 07:54:25,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 07:54:25,186 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 07:54:25,214 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 07:54:25,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 07:54:25,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 07:54:25,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 07:54:25,200 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 07:54:25,291 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 07:54:25,292 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 07:54:49,380 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 07:54:49,418 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 07:54:49,418 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-16 07:54:49,418 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 07:54:49 BoogieIcfgContainer [2023-12-16 07:54:49,419 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 07:54:49,420 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 07:54:49,420 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 07:54:49,423 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 07:54:49,423 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 07:54:23" (1/3) ... [2023-12-16 07:54:49,423 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e4ccaa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 07:54:49, skipping insertion in model container [2023-12-16 07:54:49,423 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:54:24" (2/3) ... [2023-12-16 07:54:49,423 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e4ccaa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 07:54:49, skipping insertion in model container [2023-12-16 07:54:49,424 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 07:54:49" (3/3) ... [2023-12-16 07:54:49,424 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.1.ufo.BOUNDED-10.pals+Problem12_label02.c [2023-12-16 07:54:49,435 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 07:54:49,436 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-16 07:54:49,475 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 07:54:49,479 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;@1c75192d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 07:54:49,479 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-16 07:54:49,485 INFO L276 IsEmpty]: Start isEmpty. Operand has 834 states, 831 states have (on average 1.9759326113116726) internal successors, (1642), 833 states have internal predecessors, (1642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 07:54:49,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-16 07:54:49,490 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:54:49,490 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] [2023-12-16 07:54:49,491 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:54:49,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:54:49,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1603356568, now seen corresponding path program 1 times [2023-12-16 07:54:49,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:54:49,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1178709433] [2023-12-16 07:54:49,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 07:54:49,505 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 07:54:49,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:54:49,521 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 07:54:49,531 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 07:54:49,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 07:54:49,607 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 07:54:49,610 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:54:49,621 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 07:54:49,622 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 07:54:49,622 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:54:49,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1178709433] [2023-12-16 07:54:49,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1178709433] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 07:54:49,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 07:54:49,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 07:54:49,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045551235] [2023-12-16 07:54:49,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 07:54:49,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 07:54:49,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:54:49,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 07:54:49,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 07:54:49,650 INFO L87 Difference]: Start difference. First operand has 834 states, 831 states have (on average 1.9759326113116726) internal successors, (1642), 833 states have internal predecessors, (1642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 07:54:49,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:54:49,732 INFO L93 Difference]: Finished difference Result 1633 states and 3216 transitions. [2023-12-16 07:54:49,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 07:54:49,734 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-12-16 07:54:49,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:54:49,746 INFO L225 Difference]: With dead ends: 1633 [2023-12-16 07:54:49,746 INFO L226 Difference]: Without dead ends: 830 [2023-12-16 07:54:49,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 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 07:54:49,752 INFO L413 NwaCegarLoop]: 1571 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1571 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 07:54:49,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1571 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 07:54:49,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2023-12-16 07:54:49,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 830. [2023-12-16 07:54:49,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 830 states, 828 states have (on average 1.8973429951690821) internal successors, (1571), 829 states have internal predecessors, (1571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 07:54:49,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 1571 transitions. [2023-12-16 07:54:49,804 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 1571 transitions. Word has length 21 [2023-12-16 07:54:49,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:54:49,804 INFO L495 AbstractCegarLoop]: Abstraction has 830 states and 1571 transitions. [2023-12-16 07:54:49,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 07:54:49,804 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 1571 transitions. [2023-12-16 07:54:49,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-16 07:54:49,805 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:54:49,805 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] [2023-12-16 07:54:49,825 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 07:54:50,008 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 07:54:50,009 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:54:50,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:54:50,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1103262826, now seen corresponding path program 1 times [2023-12-16 07:54:50,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:54:50,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1920017420] [2023-12-16 07:54:50,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 07:54:50,011 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 07:54:50,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:54:50,012 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 07:54:50,023 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 07:54:50,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 07:54:50,073 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 07:54:50,074 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:54:50,117 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 07:54:50,117 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 07:54:50,118 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:54:50,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1920017420] [2023-12-16 07:54:50,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1920017420] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 07:54:50,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 07:54:50,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 07:54:50,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944371641] [2023-12-16 07:54:50,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 07:54:50,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 07:54:50,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:54:50,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 07:54:50,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 07:54:50,124 INFO L87 Difference]: Start difference. First operand 830 states and 1571 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 07:54:50,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:54:50,219 INFO L93 Difference]: Finished difference Result 874 states and 1640 transitions. [2023-12-16 07:54:50,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 07:54:50,220 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-12-16 07:54:50,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:54:50,224 INFO L225 Difference]: With dead ends: 874 [2023-12-16 07:54:50,225 INFO L226 Difference]: Without dead ends: 830 [2023-12-16 07:54:50,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 07:54:50,227 INFO L413 NwaCegarLoop]: 1568 mSDtfsCounter, 0 mSDsluCounter, 3101 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4669 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 07:54:50,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4669 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 07:54:50,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2023-12-16 07:54:50,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 830. [2023-12-16 07:54:50,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 830 states, 828 states have (on average 1.8599033816425121) internal successors, (1540), 829 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 07:54:50,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 1540 transitions. [2023-12-16 07:54:50,307 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 1540 transitions. Word has length 21 [2023-12-16 07:54:50,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:54:50,307 INFO L495 AbstractCegarLoop]: Abstraction has 830 states and 1540 transitions. [2023-12-16 07:54:50,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 07:54:50,307 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 1540 transitions. [2023-12-16 07:54:50,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-16 07:54:50,308 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:54:50,308 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:54:50,321 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 (3)] Ended with exit code 0 [2023-12-16 07:54:50,517 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 07:54:50,517 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:54:50,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:54:50,518 INFO L85 PathProgramCache]: Analyzing trace with hash 51546625, now seen corresponding path program 1 times [2023-12-16 07:54:50,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:54:50,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [266646691] [2023-12-16 07:54:50,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 07:54:50,519 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 07:54:50,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:54:50,520 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 07:54:50,522 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 07:54:50,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 07:54:50,628 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 07:54:50,630 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:54:51,374 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 07:54:51,374 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 07:54:51,374 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:54:51,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [266646691] [2023-12-16 07:54:51,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [266646691] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 07:54:51,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 07:54:51,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 07:54:51,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10051857] [2023-12-16 07:54:51,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 07:54:51,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 07:54:51,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:54:51,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 07:54:51,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-16 07:54:51,376 INFO L87 Difference]: Start difference. First operand 830 states and 1540 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 07:54:51,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:54:51,582 INFO L93 Difference]: Finished difference Result 1076 states and 1936 transitions. [2023-12-16 07:54:51,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 07:54:51,583 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-12-16 07:54:51,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:54:51,586 INFO L225 Difference]: With dead ends: 1076 [2023-12-16 07:54:51,586 INFO L226 Difference]: Without dead ends: 1035 [2023-12-16 07:54:51,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-16 07:54:51,589 INFO L413 NwaCegarLoop]: 1534 mSDtfsCounter, 3285 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3285 SdHoareTripleChecker+Valid, 1952 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 07:54:51,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3285 Valid, 1952 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 07:54:51,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1035 states. [2023-12-16 07:54:51,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1035 to 908. [2023-12-16 07:54:51,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 908 states, 906 states have (on average 1.8399558498896247) internal successors, (1667), 907 states have internal predecessors, (1667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 07:54:51,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 908 states to 908 states and 1667 transitions. [2023-12-16 07:54:51,607 INFO L78 Accepts]: Start accepts. Automaton has 908 states and 1667 transitions. Word has length 51 [2023-12-16 07:54:51,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:54:51,608 INFO L495 AbstractCegarLoop]: Abstraction has 908 states and 1667 transitions. [2023-12-16 07:54:51,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 07:54:51,608 INFO L276 IsEmpty]: Start isEmpty. Operand 908 states and 1667 transitions. [2023-12-16 07:54:51,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-16 07:54:51,613 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:54:51,614 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:54:51,623 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 07:54:51,822 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 07:54:51,824 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:54:51,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:54:51,824 INFO L85 PathProgramCache]: Analyzing trace with hash 2145916561, now seen corresponding path program 1 times [2023-12-16 07:54:51,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:54:51,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [195748197] [2023-12-16 07:54:51,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 07:54:51,825 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 07:54:51,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:54:51,840 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 07:54:51,841 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 07:54:51,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 07:54:51,913 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 07:54:51,914 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:54:52,028 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 07:54:52,028 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 07:54:52,028 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:54:52,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [195748197] [2023-12-16 07:54:52,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [195748197] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 07:54:52,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 07:54:52,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 07:54:52,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966295370] [2023-12-16 07:54:52,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 07:54:52,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 07:54:52,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:54:52,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 07:54:52,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 07:54:52,030 INFO L87 Difference]: Start difference. First operand 908 states and 1667 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 07:54:52,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:54:52,072 INFO L93 Difference]: Finished difference Result 1130 states and 2025 transitions. [2023-12-16 07:54:52,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 07:54:52,073 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-12-16 07:54:52,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:54:52,076 INFO L225 Difference]: With dead ends: 1130 [2023-12-16 07:54:52,076 INFO L226 Difference]: Without dead ends: 1011 [2023-12-16 07:54:52,077 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 07:54:52,077 INFO L413 NwaCegarLoop]: 1536 mSDtfsCounter, 1480 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 1596 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 07:54:52,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1480 Valid, 1596 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 07:54:52,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2023-12-16 07:54:52,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 1009. [2023-12-16 07:54:52,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1009 states, 1007 states have (on average 1.8133068520357498) internal successors, (1826), 1008 states have internal predecessors, (1826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 07:54:52,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1009 states to 1009 states and 1826 transitions. [2023-12-16 07:54:52,092 INFO L78 Accepts]: Start accepts. Automaton has 1009 states and 1826 transitions. Word has length 53 [2023-12-16 07:54:52,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:54:52,093 INFO L495 AbstractCegarLoop]: Abstraction has 1009 states and 1826 transitions. [2023-12-16 07:54:52,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 07:54:52,093 INFO L276 IsEmpty]: Start isEmpty. Operand 1009 states and 1826 transitions. [2023-12-16 07:54:52,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-16 07:54:52,094 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:54:52,094 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:54:52,110 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-16 07:54:52,297 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 07:54:52,297 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:54:52,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:54:52,298 INFO L85 PathProgramCache]: Analyzing trace with hash 2036322024, now seen corresponding path program 1 times [2023-12-16 07:54:52,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:54:52,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [9860859] [2023-12-16 07:54:52,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 07:54:52,298 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:54:52,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:54:52,299 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 07:54:52,322 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 07:54:52,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 07:54:52,364 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 07:54:52,365 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:54:52,381 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 07:54:52,381 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 07:54:52,381 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:54:52,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [9860859] [2023-12-16 07:54:52,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [9860859] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 07:54:52,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 07:54:52,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 07:54:52,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283522961] [2023-12-16 07:54:52,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 07:54:52,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 07:54:52,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:54:52,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 07:54:52,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 07:54:52,383 INFO L87 Difference]: Start difference. First operand 1009 states and 1826 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 07:54:52,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:54:52,426 INFO L93 Difference]: Finished difference Result 1023 states and 1843 transitions. [2023-12-16 07:54:52,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 07:54:52,427 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2023-12-16 07:54:52,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:54:52,430 INFO L225 Difference]: With dead ends: 1023 [2023-12-16 07:54:52,430 INFO L226 Difference]: Without dead ends: 1021 [2023-12-16 07:54:52,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 07:54:52,431 INFO L413 NwaCegarLoop]: 1536 mSDtfsCounter, 1 mSDsluCounter, 3064 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4600 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 07:54:52,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4600 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 07:54:52,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1021 states. [2023-12-16 07:54:52,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1021 to 1017. [2023-12-16 07:54:52,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1017 states, 1015 states have (on average 1.805911330049261) internal successors, (1833), 1016 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 07:54:52,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1017 states to 1017 states and 1833 transitions. [2023-12-16 07:54:52,445 INFO L78 Accepts]: Start accepts. Automaton has 1017 states and 1833 transitions. Word has length 54 [2023-12-16 07:54:52,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:54:52,446 INFO L495 AbstractCegarLoop]: Abstraction has 1017 states and 1833 transitions. [2023-12-16 07:54:52,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 07:54:52,446 INFO L276 IsEmpty]: Start isEmpty. Operand 1017 states and 1833 transitions. [2023-12-16 07:54:52,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-16 07:54:52,447 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:54:52,447 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:54:52,466 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 07:54:52,650 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 07:54:52,650 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:54:52,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:54:52,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1922958665, now seen corresponding path program 1 times [2023-12-16 07:54:52,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:54:52,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [16831680] [2023-12-16 07:54:52,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 07:54:52,651 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 07:54:52,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:54:52,652 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 07:54:52,674 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 07:54:52,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 07:54:52,718 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 07:54:52,719 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:54:52,787 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 07:54:52,787 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 07:54:52,787 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:54:52,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [16831680] [2023-12-16 07:54:52,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [16831680] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 07:54:52,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 07:54:52,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 07:54:52,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597997092] [2023-12-16 07:54:52,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 07:54:52,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 07:54:52,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:54:52,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 07:54:52,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 07:54:52,789 INFO L87 Difference]: Start difference. First operand 1017 states and 1833 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 07:54:52,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:54:52,816 INFO L93 Difference]: Finished difference Result 1257 states and 2213 transitions. [2023-12-16 07:54:52,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 07:54:52,816 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-12-16 07:54:52,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:54:52,819 INFO L225 Difference]: With dead ends: 1257 [2023-12-16 07:54:52,820 INFO L226 Difference]: Without dead ends: 1132 [2023-12-16 07:54:52,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 53 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 07:54:52,820 INFO L413 NwaCegarLoop]: 1587 mSDtfsCounter, 1494 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1494 SdHoareTripleChecker+Valid, 1653 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 07:54:52,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1494 Valid, 1653 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 07:54:52,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1132 states. [2023-12-16 07:54:52,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1132 to 1130. [2023-12-16 07:54:52,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1130 states, 1128 states have (on average 1.7810283687943262) internal successors, (2009), 1129 states have internal predecessors, (2009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 07:54:52,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1130 states to 1130 states and 2009 transitions. [2023-12-16 07:54:52,837 INFO L78 Accepts]: Start accepts. Automaton has 1130 states and 2009 transitions. Word has length 55 [2023-12-16 07:54:52,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:54:52,837 INFO L495 AbstractCegarLoop]: Abstraction has 1130 states and 2009 transitions. [2023-12-16 07:54:52,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 07:54:52,837 INFO L276 IsEmpty]: Start isEmpty. Operand 1130 states and 2009 transitions. [2023-12-16 07:54:52,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-16 07:54:52,837 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:54:52,838 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:54:52,843 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 07:54:53,041 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 07:54:53,041 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:54:53,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:54:53,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1694319433, now seen corresponding path program 1 times [2023-12-16 07:54:53,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:54:53,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1601390293] [2023-12-16 07:54:53,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 07:54:53,042 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 07:54:53,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:54:53,043 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 07:54:53,047 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 07:54:53,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 07:54:53,103 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 07:54:53,104 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:54:53,149 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 07:54:53,149 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 07:54:53,149 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:54:53,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1601390293] [2023-12-16 07:54:53,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1601390293] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 07:54:53,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 07:54:53,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 07:54:53,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105028400] [2023-12-16 07:54:53,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 07:54:53,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 07:54:53,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:54:53,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 07:54:53,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 07:54:53,151 INFO L87 Difference]: Start difference. First operand 1130 states and 2009 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 07:54:53,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:54:53,177 INFO L93 Difference]: Finished difference Result 1772 states and 3012 transitions. [2023-12-16 07:54:53,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 07:54:53,178 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-12-16 07:54:53,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:54:53,182 INFO L225 Difference]: With dead ends: 1772 [2023-12-16 07:54:53,182 INFO L226 Difference]: Without dead ends: 1433 [2023-12-16 07:54:53,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 53 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 07:54:53,183 INFO L413 NwaCegarLoop]: 1579 mSDtfsCounter, 1490 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1490 SdHoareTripleChecker+Valid, 1653 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 07:54:53,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1490 Valid, 1653 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 07:54:53,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1433 states. [2023-12-16 07:54:53,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1433 to 1431. [2023-12-16 07:54:53,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1431 states, 1429 states have (on average 1.72778166550035) internal successors, (2469), 1430 states have internal predecessors, (2469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 07:54:53,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1431 states to 1431 states and 2469 transitions. [2023-12-16 07:54:53,262 INFO L78 Accepts]: Start accepts. Automaton has 1431 states and 2469 transitions. Word has length 55 [2023-12-16 07:54:53,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:54:53,262 INFO L495 AbstractCegarLoop]: Abstraction has 1431 states and 2469 transitions. [2023-12-16 07:54:53,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 07:54:53,262 INFO L276 IsEmpty]: Start isEmpty. Operand 1431 states and 2469 transitions. [2023-12-16 07:54:53,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-16 07:54:53,263 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:54:53,263 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:54:53,280 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 07:54:53,466 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 07:54:53,467 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:54:53,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:54:53,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1068663369, now seen corresponding path program 1 times [2023-12-16 07:54:53,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:54:53,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2063740733] [2023-12-16 07:54:53,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 07:54:53,468 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 07:54:53,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:54:53,469 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 07:54:53,498 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 07:54:53,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 07:54:53,529 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 07:54:53,531 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:54:53,572 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 07:54:53,572 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 07:54:53,572 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:54:53,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2063740733] [2023-12-16 07:54:53,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2063740733] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 07:54:53,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 07:54:53,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 07:54:53,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535422412] [2023-12-16 07:54:53,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 07:54:53,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 07:54:53,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:54:53,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 07:54:53,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 07:54:53,577 INFO L87 Difference]: Start difference. First operand 1431 states and 2469 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 07:54:53,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:54:53,610 INFO L93 Difference]: Finished difference Result 2639 states and 4329 transitions. [2023-12-16 07:54:53,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 07:54:53,610 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-12-16 07:54:53,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:54:53,616 INFO L225 Difference]: With dead ends: 2639 [2023-12-16 07:54:53,616 INFO L226 Difference]: Without dead ends: 1999 [2023-12-16 07:54:53,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 53 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 07:54:53,617 INFO L413 NwaCegarLoop]: 1577 mSDtfsCounter, 1488 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1488 SdHoareTripleChecker+Valid, 1655 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 07:54:53,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1488 Valid, 1655 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 07:54:53,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1999 states. [2023-12-16 07:54:53,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1999 to 1997. [2023-12-16 07:54:53,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1997 states, 1995 states have (on average 1.66265664160401) internal successors, (3317), 1996 states have internal predecessors, (3317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 07:54:53,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1997 states to 1997 states and 3317 transitions. [2023-12-16 07:54:53,646 INFO L78 Accepts]: Start accepts. Automaton has 1997 states and 3317 transitions. Word has length 55 [2023-12-16 07:54:53,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:54:53,646 INFO L495 AbstractCegarLoop]: Abstraction has 1997 states and 3317 transitions. [2023-12-16 07:54:53,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 07:54:53,647 INFO L276 IsEmpty]: Start isEmpty. Operand 1997 states and 3317 transitions. [2023-12-16 07:54:53,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-16 07:54:53,647 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:54:53,648 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:54:53,655 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-16 07:54:53,853 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 07:54:53,853 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:54:53,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:54:53,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1957396809, now seen corresponding path program 1 times [2023-12-16 07:54:53,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:54:53,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1104559712] [2023-12-16 07:54:53,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 07:54:53,854 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 07:54:53,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:54:53,855 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 07:54:53,889 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 07:54:53,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 07:54:53,920 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 07:54:53,923 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:54:53,959 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 07:54:53,960 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 07:54:53,960 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:54:53,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1104559712] [2023-12-16 07:54:53,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1104559712] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 07:54:53,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 07:54:53,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 07:54:53,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323918219] [2023-12-16 07:54:53,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 07:54:53,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 07:54:53,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:54:53,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 07:54:53,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 07:54:53,961 INFO L87 Difference]: Start difference. First operand 1997 states and 3317 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 07:54:54,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:54:54,003 INFO L93 Difference]: Finished difference Result 4265 states and 6747 transitions. [2023-12-16 07:54:54,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 07:54:54,004 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-12-16 07:54:54,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:54:54,011 INFO L225 Difference]: With dead ends: 4265 [2023-12-16 07:54:54,011 INFO L226 Difference]: Without dead ends: 3059 [2023-12-16 07:54:54,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 53 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 07:54:54,015 INFO L413 NwaCegarLoop]: 1575 mSDtfsCounter, 1486 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1486 SdHoareTripleChecker+Valid, 1657 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 07:54:54,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1486 Valid, 1657 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 07:54:54,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3059 states. [2023-12-16 07:54:54,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3059 to 3057. [2023-12-16 07:54:54,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3057 states, 3055 states have (on average 1.5937806873977087) internal successors, (4869), 3056 states have internal predecessors, (4869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 07:54:54,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3057 states to 3057 states and 4869 transitions. [2023-12-16 07:54:54,058 INFO L78 Accepts]: Start accepts. Automaton has 3057 states and 4869 transitions. Word has length 55 [2023-12-16 07:54:54,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:54:54,058 INFO L495 AbstractCegarLoop]: Abstraction has 3057 states and 4869 transitions. [2023-12-16 07:54:54,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 07:54:54,059 INFO L276 IsEmpty]: Start isEmpty. Operand 3057 states and 4869 transitions. [2023-12-16 07:54:54,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-16 07:54:54,059 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:54:54,059 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:54:54,065 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 07:54:54,262 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 07:54:54,263 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:54:54,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:54:54,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1654375497, now seen corresponding path program 1 times [2023-12-16 07:54:54,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:54:54,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [200531585] [2023-12-16 07:54:54,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 07:54:54,264 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 07:54:54,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:54:54,265 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 07:54:54,271 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 07:54:54,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 07:54:54,327 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 07:54:54,330 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:54:54,378 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 07:54:54,378 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 07:54:54,379 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:54:54,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [200531585] [2023-12-16 07:54:54,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [200531585] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 07:54:54,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 07:54:54,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 07:54:54,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854937657] [2023-12-16 07:54:54,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 07:54:54,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 07:54:54,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:54:54,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 07:54:54,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 07:54:54,380 INFO L87 Difference]: Start difference. First operand 3057 states and 4869 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 07:54:54,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:54:54,435 INFO L93 Difference]: Finished difference Result 7301 states and 11151 transitions. [2023-12-16 07:54:54,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 07:54:54,436 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-12-16 07:54:54,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:54:54,447 INFO L225 Difference]: With dead ends: 7301 [2023-12-16 07:54:54,447 INFO L226 Difference]: Without dead ends: 5035 [2023-12-16 07:54:54,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 53 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 07:54:54,450 INFO L413 NwaCegarLoop]: 1589 mSDtfsCounter, 1492 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1492 SdHoareTripleChecker+Valid, 1659 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 07:54:54,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1492 Valid, 1659 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 07:54:54,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5035 states. [2023-12-16 07:54:54,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5035 to 5033. [2023-12-16 07:54:54,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5033 states, 5031 states have (on average 1.5275293182269927) internal successors, (7685), 5032 states have internal predecessors, (7685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 07:54:54,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5033 states to 5033 states and 7685 transitions. [2023-12-16 07:54:54,528 INFO L78 Accepts]: Start accepts. Automaton has 5033 states and 7685 transitions. Word has length 55 [2023-12-16 07:54:54,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:54:54,529 INFO L495 AbstractCegarLoop]: Abstraction has 5033 states and 7685 transitions. [2023-12-16 07:54:54,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 07:54:54,530 INFO L276 IsEmpty]: Start isEmpty. Operand 5033 states and 7685 transitions. [2023-12-16 07:54:54,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-16 07:54:54,531 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:54:54,531 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:54:54,536 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 07:54:54,734 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 07:54:54,735 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:54:54,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:54:54,735 INFO L85 PathProgramCache]: Analyzing trace with hash 707266715, now seen corresponding path program 1 times [2023-12-16 07:54:54,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:54:54,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2034706582] [2023-12-16 07:54:54,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 07:54:54,736 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 07:54:54,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:54:54,737 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 07:54:54,753 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 07:54:54,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 07:54:54,843 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 07:54:54,844 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:54:54,925 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 07:54:54,925 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 07:54:54,926 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:54:54,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2034706582] [2023-12-16 07:54:54,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2034706582] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 07:54:54,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 07:54:54,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 07:54:54,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137042648] [2023-12-16 07:54:54,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 07:54:54,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 07:54:54,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:54:54,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 07:54:54,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 07:54:54,927 INFO L87 Difference]: Start difference. First operand 5033 states and 7685 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 07:55:30,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:55:30,125 INFO L93 Difference]: Finished difference Result 6537 states and 10558 transitions. [2023-12-16 07:55:30,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 07:55:30,126 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-12-16 07:55:30,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:55:30,151 INFO L225 Difference]: With dead ends: 6537 [2023-12-16 07:55:30,151 INFO L226 Difference]: Without dead ends: 5784 [2023-12-16 07:55:30,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 60 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 07:55:30,154 INFO L413 NwaCegarLoop]: 638 mSDtfsCounter, 835 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2200 mSolverCounterSat, 664 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 835 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 2864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 664 IncrementalHoareTripleChecker+Valid, 2200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.0s IncrementalHoareTripleChecker+Time [2023-12-16 07:55:30,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [835 Valid, 645 Invalid, 2864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [664 Valid, 2200 Invalid, 0 Unknown, 0 Unchecked, 35.0s Time] [2023-12-16 07:55:30,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5784 states. [2023-12-16 07:55:30,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5784 to 5784. [2023-12-16 07:55:30,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5784 states, 5782 states have (on average 1.4859910065721205) internal successors, (8592), 5783 states have internal predecessors, (8592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 07:55:30,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5784 states to 5784 states and 8592 transitions. [2023-12-16 07:55:30,256 INFO L78 Accepts]: Start accepts. Automaton has 5784 states and 8592 transitions. Word has length 62 [2023-12-16 07:55:30,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:55:30,256 INFO L495 AbstractCegarLoop]: Abstraction has 5784 states and 8592 transitions. [2023-12-16 07:55:30,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 07:55:30,257 INFO L276 IsEmpty]: Start isEmpty. Operand 5784 states and 8592 transitions. [2023-12-16 07:55:30,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-16 07:55:30,260 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:55:30,260 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 07:55:30,280 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 07:55:30,463 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 07:55:30,463 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:55:30,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:55:30,464 INFO L85 PathProgramCache]: Analyzing trace with hash 285878162, now seen corresponding path program 1 times [2023-12-16 07:55:30,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:55:30,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1426337294] [2023-12-16 07:55:30,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 07:55:30,464 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 07:55:30,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:55:30,466 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 07:55:30,467 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 07:55:30,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 07:55:30,563 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-16 07:55:30,565 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:55:31,276 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 07:55:31,276 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 07:55:31,621 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 07:55:31,621 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:55:31,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1426337294] [2023-12-16 07:55:31,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1426337294] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 07:55:31,621 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 07:55:31,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-16 07:55:31,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524060239] [2023-12-16 07:55:31,621 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 07:55:31,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-16 07:55:31,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:55:31,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-16 07:55:31,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-16 07:55:31,623 INFO L87 Difference]: Start difference. First operand 5784 states and 8592 transitions. Second operand has 16 states, 16 states have (on average 8.25) internal successors, (132), 16 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 07:55:33,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:55:33,528 INFO L93 Difference]: Finished difference Result 15122 states and 22101 transitions. [2023-12-16 07:55:33,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-16 07:55:33,528 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 8.25) internal successors, (132), 16 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2023-12-16 07:55:33,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:55:33,551 INFO L225 Difference]: With dead ends: 15122 [2023-12-16 07:55:33,552 INFO L226 Difference]: Without dead ends: 12144 [2023-12-16 07:55:33,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=249, Invalid=743, Unknown=0, NotChecked=0, Total=992 [2023-12-16 07:55:33,558 INFO L413 NwaCegarLoop]: 1543 mSDtfsCounter, 6804 mSDsluCounter, 10800 mSDsCounter, 0 mSdLazyCounter, 790 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6804 SdHoareTripleChecker+Valid, 12343 SdHoareTripleChecker+Invalid, 805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-16 07:55:33,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6804 Valid, 12343 Invalid, 805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 790 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-16 07:55:33,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12144 states. [2023-12-16 07:55:33,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12144 to 10024. [2023-12-16 07:55:33,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10024 states, 10022 states have (on average 1.471961684294552) internal successors, (14752), 10023 states have internal predecessors, (14752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 07:55:33,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10024 states to 10024 states and 14752 transitions. [2023-12-16 07:55:33,757 INFO L78 Accepts]: Start accepts. Automaton has 10024 states and 14752 transitions. Word has length 73 [2023-12-16 07:55:33,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:55:33,757 INFO L495 AbstractCegarLoop]: Abstraction has 10024 states and 14752 transitions. [2023-12-16 07:55:33,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.25) internal successors, (132), 16 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 07:55:33,757 INFO L276 IsEmpty]: Start isEmpty. Operand 10024 states and 14752 transitions. [2023-12-16 07:55:33,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-16 07:55:33,759 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:55:33,759 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 07:55:33,773 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 07:55:33,963 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 07:55:33,963 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:55:33,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:55:33,963 INFO L85 PathProgramCache]: Analyzing trace with hash 57238930, now seen corresponding path program 1 times [2023-12-16 07:55:33,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:55:33,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2111668479] [2023-12-16 07:55:33,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 07:55:33,964 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 07:55:33,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:55:33,965 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 07:55:33,994 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 07:55:34,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 07:55:34,038 INFO L262 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 07:55:34,039 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-16 07:55:34,070 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 07:55:34,076 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-16 07:55:34,082 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 07:55:34,094 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 (14)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 07:55:34,282 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 07:55:34,283 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 74 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. [2023-12-16 07:55:34,291 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-16 07:55:34,294 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:55:34,296 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 07:55:34,299 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 07:55:34 BoogieIcfgContainer [2023-12-16 07:55:34,299 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 07:55:34,299 INFO L158 Benchmark]: Toolchain (without parser) took 71200.94ms. Allocated memory was 267.4MB in the beginning and 641.7MB in the end (delta: 374.3MB). Free memory was 204.1MB in the beginning and 192.7MB in the end (delta: 11.3MB). Peak memory consumption was 387.8MB. Max. memory is 8.0GB. [2023-12-16 07:55:34,299 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 207.6MB. Free memory was 160.5MB in the beginning and 160.3MB in the end (delta: 151.1kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 07:55:34,299 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1528.05ms. Allocated memory is still 267.4MB. Free memory was 203.5MB in the beginning and 107.2MB in the end (delta: 96.3MB). Peak memory consumption was 104.7MB. Max. memory is 8.0GB. [2023-12-16 07:55:34,300 INFO L158 Benchmark]: Boogie Procedure Inliner took 244.06ms. Allocated memory is still 267.4MB. Free memory was 106.7MB in the beginning and 177.0MB in the end (delta: -70.3MB). Peak memory consumption was 23.0MB. Max. memory is 8.0GB. [2023-12-16 07:55:34,301 INFO L158 Benchmark]: Boogie Preprocessor took 271.91ms. Allocated memory is still 267.4MB. Free memory was 177.0MB in the beginning and 137.7MB in the end (delta: 39.3MB). Peak memory consumption was 38.8MB. Max. memory is 8.0GB. [2023-12-16 07:55:34,301 INFO L158 Benchmark]: RCFGBuilder took 24272.14ms. Allocated memory was 267.4MB in the beginning and 534.8MB in the end (delta: 267.4MB). Free memory was 137.7MB in the beginning and 280.4MB in the end (delta: -142.7MB). Peak memory consumption was 177.1MB. Max. memory is 8.0GB. [2023-12-16 07:55:34,302 INFO L158 Benchmark]: TraceAbstraction took 44878.51ms. Allocated memory was 534.8MB in the beginning and 641.7MB in the end (delta: 107.0MB). Free memory was 279.3MB in the beginning and 192.7MB in the end (delta: 86.6MB). Peak memory consumption was 194.1MB. Max. memory is 8.0GB. [2023-12-16 07:55:34,306 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 207.6MB. Free memory was 160.5MB in the beginning and 160.3MB in the end (delta: 151.1kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1528.05ms. Allocated memory is still 267.4MB. Free memory was 203.5MB in the beginning and 107.2MB in the end (delta: 96.3MB). Peak memory consumption was 104.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 244.06ms. Allocated memory is still 267.4MB. Free memory was 106.7MB in the beginning and 177.0MB in the end (delta: -70.3MB). Peak memory consumption was 23.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 271.91ms. Allocated memory is still 267.4MB. Free memory was 177.0MB in the beginning and 137.7MB in the end (delta: 39.3MB). Peak memory consumption was 38.8MB. Max. memory is 8.0GB. * RCFGBuilder took 24272.14ms. Allocated memory was 267.4MB in the beginning and 534.8MB in the end (delta: 267.4MB). Free memory was 137.7MB in the beginning and 280.4MB in the end (delta: -142.7MB). Peak memory consumption was 177.1MB. Max. memory is 8.0GB. * TraceAbstraction took 44878.51ms. Allocated memory was 534.8MB in the beginning and 641.7MB in the end (delta: 107.0MB). Free memory was 279.3MB in the beginning and 192.7MB in the end (delta: 86.6MB). Peak memory consumption was 194.1MB. 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: 437]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 437). Cancelled while NwaCegarLoop was analyzing trace of length 74 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 641]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 641). Cancelled while NwaCegarLoop was analyzing trace of length 74 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ATOM-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 834 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 44.8s, OverallIterations: 13, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 37.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 19855 SdHoareTripleChecker+Valid, 36.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 19855 mSDsluCounter, 35653 SdHoareTripleChecker+Invalid, 29.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 17820 mSDsCounter, 727 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3163 IncrementalHoareTripleChecker+Invalid, 3890 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 727 mSolverCounterUnsat, 17833 mSDtfsCounter, 3163 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 686 GetRequests, 640 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10024occurred in iteration=12, InterpolantAutomatonStates: 59, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 12 MinimizatonAttempts, 2263 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 610 NumberOfCodeBlocks, 610 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 670 ConstructedInterpolants, 37 QuantifiedInterpolants, 3430 SizeOfPredicates, 18 NumberOfNonLiveVariables, 1799 ConjunctsInSsa, 42 ConjunctsInUnsatCore, 13 InterpolantComputations, 11 PerfectInterpolantSequences, 24/28 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