/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/array-multidimensional/init-non-constant-3-u.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 19:09:19,219 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 19:09:19,286 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-21 19:09:19,290 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 19:09:19,291 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 19:09:19,312 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 19:09:19,312 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 19:09:19,313 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 19:09:19,313 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 19:09:19,316 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 19:09:19,316 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 19:09:19,317 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 19:09:19,317 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 19:09:19,318 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 19:09:19,318 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 19:09:19,318 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 19:09:19,319 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 19:09:19,319 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 19:09:19,319 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 19:09:19,320 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 19:09:19,320 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 19:09:19,320 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 19:09:19,320 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 19:09:19,321 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-21 19:09:19,321 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-21 19:09:19,321 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 19:09:19,321 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-21 19:09:19,321 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 19:09:19,321 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 19:09:19,321 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 19:09:19,322 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 19:09:19,322 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 19:09:19,322 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 19:09:19,322 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 19:09:19,323 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 19:09:19,323 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 19:09:19,323 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 19:09:19,323 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 19:09:19,323 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-21 19:09:19,323 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-21 19:09:19,323 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 19:09:19,323 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 19:09:19,323 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 19:09:19,324 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 19:09:19,324 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 19:09:19,324 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-21 19:09:19,324 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-21 19:09:19,516 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 19:09:19,535 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 19:09:19,537 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 19:09:19,538 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 19:09:19,539 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 19:09:19,544 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-multidimensional/init-non-constant-3-u.c [2023-12-21 19:09:20,720 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 19:09:20,886 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 19:09:20,887 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-multidimensional/init-non-constant-3-u.c [2023-12-21 19:09:20,892 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3f09d965/0fbfbde119f246d1a4ca24ba68be0489/FLAGa40f2aa2b [2023-12-21 19:09:20,906 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3f09d965/0fbfbde119f246d1a4ca24ba68be0489 [2023-12-21 19:09:20,909 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 19:09:20,910 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 19:09:20,911 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 19:09:20,911 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 19:09:20,916 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 19:09:20,916 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 07:09:20" (1/1) ... [2023-12-21 19:09:20,917 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19ff155b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 07:09:20, skipping insertion in model container [2023-12-21 19:09:20,917 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 07:09:20" (1/1) ... [2023-12-21 19:09:20,936 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 19:09:21,080 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-multidimensional/init-non-constant-3-u.c[333,346] [2023-12-21 19:09:21,099 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 19:09:21,108 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 19:09:21,120 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-multidimensional/init-non-constant-3-u.c[333,346] [2023-12-21 19:09:21,138 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 19:09:21,153 INFO L206 MainTranslator]: Completed translation [2023-12-21 19:09:21,153 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 07:09:21 WrapperNode [2023-12-21 19:09:21,153 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 19:09:21,155 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 19:09:21,155 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 19:09:21,155 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 19:09:21,160 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 07:09:21" (1/1) ... [2023-12-21 19:09:21,171 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 07:09:21" (1/1) ... [2023-12-21 19:09:21,190 INFO L138 Inliner]: procedures = 16, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 75 [2023-12-21 19:09:21,190 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 19:09:21,191 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 19:09:21,191 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 19:09:21,191 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 19:09:21,198 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 07:09:21" (1/1) ... [2023-12-21 19:09:21,199 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 07:09:21" (1/1) ... [2023-12-21 19:09:21,204 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 07:09:21" (1/1) ... [2023-12-21 19:09:21,222 INFO L175 MemorySlicer]: Split 4 memory accesses to 2 slices as follows [2, 2]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2023-12-21 19:09:21,223 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 07:09:21" (1/1) ... [2023-12-21 19:09:21,223 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 07:09:21" (1/1) ... [2023-12-21 19:09:21,235 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 07:09:21" (1/1) ... [2023-12-21 19:09:21,253 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 07:09:21" (1/1) ... [2023-12-21 19:09:21,254 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 07:09:21" (1/1) ... [2023-12-21 19:09:21,255 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 07:09:21" (1/1) ... [2023-12-21 19:09:21,256 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 19:09:21,257 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 19:09:21,257 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 19:09:21,257 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 19:09:21,257 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 07:09:21" (1/1) ... [2023-12-21 19:09:21,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 19:09:21,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 19:09:21,279 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-21 19:09:21,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-21 19:09:21,319 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 19:09:21,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-21 19:09:21,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-21 19:09:21,320 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-21 19:09:21,321 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-21 19:09:21,321 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-21 19:09:21,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 19:09:21,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 19:09:21,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-21 19:09:21,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-21 19:09:21,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-21 19:09:21,389 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 19:09:21,390 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 19:09:21,699 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 19:09:21,738 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 19:09:21,738 INFO L309 CfgBuilder]: Removed 6 assume(true) statements. [2023-12-21 19:09:21,739 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 07:09:21 BoogieIcfgContainer [2023-12-21 19:09:21,739 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 19:09:21,740 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 19:09:21,741 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 19:09:21,743 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 19:09:21,743 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 07:09:20" (1/3) ... [2023-12-21 19:09:21,743 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27f26484 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 07:09:21, skipping insertion in model container [2023-12-21 19:09:21,743 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 07:09:21" (2/3) ... [2023-12-21 19:09:21,744 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27f26484 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 07:09:21, skipping insertion in model container [2023-12-21 19:09:21,744 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 07:09:21" (3/3) ... [2023-12-21 19:09:21,745 INFO L112 eAbstractionObserver]: Analyzing ICFG init-non-constant-3-u.c [2023-12-21 19:09:21,760 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 19:09:21,760 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 19:09:21,799 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 19:09:21,804 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;@7a9f48eb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 19:09:21,805 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 19:09:21,808 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 16 states have (on average 1.875) internal successors, (30), 17 states have internal predecessors, (30), 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) [2023-12-21 19:09:21,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-21 19:09:21,812 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 19:09:21,813 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 19:09:21,813 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 19:09:21,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 19:09:21,818 INFO L85 PathProgramCache]: Analyzing trace with hash -526685124, now seen corresponding path program 1 times [2023-12-21 19:09:21,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 19:09:21,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1389286139] [2023-12-21 19:09:21,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 19:09:21,829 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:09:21,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 19:09:21,831 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 19:09:21,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-21 19:09:21,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 19:09:21,930 INFO L262 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-21 19:09:21,934 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 19:09:21,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 19:09:21,951 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 19:09:21,952 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 19:09:21,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1389286139] [2023-12-21 19:09:21,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1389286139] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 19:09:21,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 19:09:21,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 19:09:21,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116088762] [2023-12-21 19:09:21,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 19:09:21,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 19:09:21,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 19:09:21,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 19:09:21,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 19:09:22,000 INFO L87 Difference]: Start difference. First operand has 18 states, 16 states have (on average 1.875) internal successors, (30), 17 states have internal predecessors, (30), 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 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2023-12-21 19:09:22,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 19:09:22,025 INFO L93 Difference]: Finished difference Result 35 states and 59 transitions. [2023-12-21 19:09:22,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 19:09:22,028 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2023-12-21 19:09:22,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 19:09:22,035 INFO L225 Difference]: With dead ends: 35 [2023-12-21 19:09:22,035 INFO L226 Difference]: Without dead ends: 16 [2023-12-21 19:09:22,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 19:09:22,041 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 19:09:22,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 19:09:22,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2023-12-21 19:09:22,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2023-12-21 19:09:22,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.4) internal successors, (21), 15 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) [2023-12-21 19:09:22,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 21 transitions. [2023-12-21 19:09:22,072 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 21 transitions. Word has length 8 [2023-12-21 19:09:22,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 19:09:22,073 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 21 transitions. [2023-12-21 19:09:22,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2023-12-21 19:09:22,073 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 21 transitions. [2023-12-21 19:09:22,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-21 19:09:22,074 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 19:09:22,074 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 19:09:22,095 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-21 19:09:22,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:09:22,280 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 19:09:22,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 19:09:22,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1381991778, now seen corresponding path program 1 times [2023-12-21 19:09:22,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 19:09:22,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [243593545] [2023-12-21 19:09:22,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 19:09:22,282 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:09:22,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 19:09:22,283 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 19:09:22,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-21 19:09:22,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 19:09:22,354 INFO L262 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 19:09:22,356 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 19:09:22,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 19:09:22,390 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 19:09:22,390 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 19:09:22,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [243593545] [2023-12-21 19:09:22,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [243593545] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 19:09:22,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 19:09:22,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 19:09:22,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70442407] [2023-12-21 19:09:22,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 19:09:22,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 19:09:22,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 19:09:22,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 19:09:22,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 19:09:22,392 INFO L87 Difference]: Start difference. First operand 16 states and 21 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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) [2023-12-21 19:09:22,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 19:09:22,578 INFO L93 Difference]: Finished difference Result 31 states and 41 transitions. [2023-12-21 19:09:22,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 19:09:22,584 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2023-12-21 19:09:22,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 19:09:22,584 INFO L225 Difference]: With dead ends: 31 [2023-12-21 19:09:22,585 INFO L226 Difference]: Without dead ends: 21 [2023-12-21 19:09:22,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 19:09:22,586 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 6 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 19:09:22,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 20 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 19:09:22,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-12-21 19:09:22,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 17. [2023-12-21 19:09:22,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 19:09:22,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 22 transitions. [2023-12-21 19:09:22,590 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 22 transitions. Word has length 8 [2023-12-21 19:09:22,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 19:09:22,590 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 22 transitions. [2023-12-21 19:09:22,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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) [2023-12-21 19:09:22,590 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 22 transitions. [2023-12-21 19:09:22,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-21 19:09:22,591 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 19:09:22,591 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 19:09:22,596 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-21 19:09:22,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:09:22,793 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 19:09:22,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 19:09:22,794 INFO L85 PathProgramCache]: Analyzing trace with hash -236778402, now seen corresponding path program 1 times [2023-12-21 19:09:22,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 19:09:22,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [622312371] [2023-12-21 19:09:22,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 19:09:22,811 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:09:22,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 19:09:22,812 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 19:09:22,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-21 19:09:22,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 19:09:22,864 INFO L262 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 19:09:22,865 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 19:09:22,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 19:09:22,893 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 19:09:22,893 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 19:09:22,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [622312371] [2023-12-21 19:09:22,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [622312371] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 19:09:22,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 19:09:22,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 19:09:22,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271209372] [2023-12-21 19:09:22,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 19:09:22,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 19:09:22,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 19:09:22,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 19:09:22,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 19:09:22,895 INFO L87 Difference]: Start difference. First operand 17 states and 22 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 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) [2023-12-21 19:09:23,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 19:09:23,114 INFO L93 Difference]: Finished difference Result 43 states and 57 transitions. [2023-12-21 19:09:23,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 19:09:23,116 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 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 11 [2023-12-21 19:09:23,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 19:09:23,116 INFO L225 Difference]: With dead ends: 43 [2023-12-21 19:09:23,116 INFO L226 Difference]: Without dead ends: 28 [2023-12-21 19:09:23,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 19:09:23,117 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 29 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 19:09:23,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 13 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 19:09:23,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-12-21 19:09:23,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 19. [2023-12-21 19:09:23,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 18 states have internal predecessors, (24), 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) [2023-12-21 19:09:23,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions. [2023-12-21 19:09:23,122 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 24 transitions. Word has length 11 [2023-12-21 19:09:23,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 19:09:23,122 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 24 transitions. [2023-12-21 19:09:23,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 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) [2023-12-21 19:09:23,122 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 24 transitions. [2023-12-21 19:09:23,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-21 19:09:23,123 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 19:09:23,123 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 19:09:23,134 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 (4)] Ended with exit code 0 [2023-12-21 19:09:23,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:09:23,326 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 19:09:23,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 19:09:23,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1385813380, now seen corresponding path program 1 times [2023-12-21 19:09:23,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 19:09:23,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [122430026] [2023-12-21 19:09:23,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 19:09:23,327 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:09:23,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 19:09:23,329 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 19:09:23,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-21 19:09:23,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 19:09:23,389 INFO L262 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 19:09:23,390 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 19:09:23,416 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 19:09:23,416 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 19:09:23,417 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 19:09:23,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [122430026] [2023-12-21 19:09:23,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [122430026] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 19:09:23,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 19:09:23,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 19:09:23,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353274370] [2023-12-21 19:09:23,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 19:09:23,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 19:09:23,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 19:09:23,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 19:09:23,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 19:09:23,419 INFO L87 Difference]: Start difference. First operand 19 states and 24 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 19:09:23,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 19:09:23,571 INFO L93 Difference]: Finished difference Result 43 states and 55 transitions. [2023-12-21 19:09:23,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 19:09:23,572 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-12-21 19:09:23,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 19:09:23,572 INFO L225 Difference]: With dead ends: 43 [2023-12-21 19:09:23,572 INFO L226 Difference]: Without dead ends: 26 [2023-12-21 19:09:23,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 19:09:23,573 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 30 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 19:09:23,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 15 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 19:09:23,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-12-21 19:09:23,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 21. [2023-12-21 19:09:23,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.3) internal successors, (26), 20 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 19:09:23,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2023-12-21 19:09:23,578 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 26 transitions. Word has length 14 [2023-12-21 19:09:23,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 19:09:23,578 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 26 transitions. [2023-12-21 19:09:23,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 19:09:23,578 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 26 transitions. [2023-12-21 19:09:23,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-21 19:09:23,579 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 19:09:23,579 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 19:09:23,582 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-12-21 19:09:23,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:09:23,779 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 19:09:23,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 19:09:23,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1868918897, now seen corresponding path program 1 times [2023-12-21 19:09:23,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 19:09:23,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1105937278] [2023-12-21 19:09:23,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 19:09:23,781 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:09:23,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 19:09:23,782 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 19:09:23,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-21 19:09:23,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 19:09:23,833 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 19:09:23,834 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 19:09:23,889 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 19:09:23,890 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 19:09:23,928 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 19:09:23,928 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 19:09:23,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1105937278] [2023-12-21 19:09:23,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1105937278] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 19:09:23,928 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 19:09:23,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-12-21 19:09:23,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448235193] [2023-12-21 19:09:23,929 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 19:09:23,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 19:09:23,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 19:09:23,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 19:09:23,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-21 19:09:23,930 INFO L87 Difference]: Start difference. First operand 21 states and 26 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 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) [2023-12-21 19:09:24,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 19:09:24,264 INFO L93 Difference]: Finished difference Result 59 states and 75 transitions. [2023-12-21 19:09:24,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 19:09:24,264 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-12-21 19:09:24,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 19:09:24,265 INFO L225 Difference]: With dead ends: 59 [2023-12-21 19:09:24,265 INFO L226 Difference]: Without dead ends: 40 [2023-12-21 19:09:24,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2023-12-21 19:09:24,266 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 84 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 19:09:24,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 32 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 19:09:24,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-12-21 19:09:24,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 33. [2023-12-21 19:09:24,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.28125) internal successors, (41), 32 states have internal predecessors, (41), 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) [2023-12-21 19:09:24,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2023-12-21 19:09:24,271 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 41 transitions. Word has length 15 [2023-12-21 19:09:24,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 19:09:24,272 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 41 transitions. [2023-12-21 19:09:24,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 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) [2023-12-21 19:09:24,272 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 41 transitions. [2023-12-21 19:09:24,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-21 19:09:24,272 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 19:09:24,272 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 19:09:24,290 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-21 19:09:24,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:09:24,476 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 19:09:24,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 19:09:24,476 INFO L85 PathProgramCache]: Analyzing trace with hash 165697340, now seen corresponding path program 2 times [2023-12-21 19:09:24,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 19:09:24,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1363578179] [2023-12-21 19:09:24,477 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 19:09:24,477 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:09:24,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 19:09:24,479 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 19:09:24,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-21 19:09:24,620 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 19:09:24,620 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 19:09:24,625 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-21 19:09:24,626 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 19:09:24,728 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 19:09:24,728 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 19:09:24,928 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 19:09:24,929 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 19:09:24,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1363578179] [2023-12-21 19:09:24,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1363578179] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 19:09:24,929 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 19:09:24,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-12-21 19:09:24,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508628220] [2023-12-21 19:09:24,929 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 19:09:24,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-21 19:09:24,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 19:09:24,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-21 19:09:24,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2023-12-21 19:09:24,930 INFO L87 Difference]: Start difference. First operand 33 states and 41 transitions. Second operand has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 19:09:25,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 19:09:25,840 INFO L93 Difference]: Finished difference Result 107 states and 132 transitions. [2023-12-21 19:09:25,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-21 19:09:25,840 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-12-21 19:09:25,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 19:09:25,841 INFO L225 Difference]: With dead ends: 107 [2023-12-21 19:09:25,841 INFO L226 Difference]: Without dead ends: 76 [2023-12-21 19:09:25,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=131, Invalid=211, Unknown=0, NotChecked=0, Total=342 [2023-12-21 19:09:25,842 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 267 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 19:09:25,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 112 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 19:09:25,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-12-21 19:09:25,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 57. [2023-12-21 19:09:25,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.2678571428571428) internal successors, (71), 56 states have internal predecessors, (71), 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) [2023-12-21 19:09:25,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 71 transitions. [2023-12-21 19:09:25,852 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 71 transitions. Word has length 18 [2023-12-21 19:09:25,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 19:09:25,853 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 71 transitions. [2023-12-21 19:09:25,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 19:09:25,853 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 71 transitions. [2023-12-21 19:09:25,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-21 19:09:25,853 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 19:09:25,854 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 19:09:25,861 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 (7)] Ended with exit code 0 [2023-12-21 19:09:26,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:09:26,057 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 19:09:26,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 19:09:26,057 INFO L85 PathProgramCache]: Analyzing trace with hash 308962908, now seen corresponding path program 3 times [2023-12-21 19:09:26,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 19:09:26,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [312320218] [2023-12-21 19:09:26,058 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 19:09:26,058 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:09:26,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 19:09:26,059 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 19:09:26,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-21 19:09:26,128 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-21 19:09:26,128 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 19:09:26,131 INFO L262 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 19:09:26,133 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 19:09:26,248 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-21 19:09:26,248 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 19:09:26,302 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-21 19:09:26,303 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 19:09:26,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [312320218] [2023-12-21 19:09:26,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [312320218] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 19:09:26,303 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 19:09:26,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-12-21 19:09:26,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571082368] [2023-12-21 19:09:26,303 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 19:09:26,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 19:09:26,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 19:09:26,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 19:09:26,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-21 19:09:26,304 INFO L87 Difference]: Start difference. First operand 57 states and 71 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 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) [2023-12-21 19:09:26,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 19:09:26,594 INFO L93 Difference]: Finished difference Result 144 states and 178 transitions. [2023-12-21 19:09:26,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 19:09:26,594 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 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 24 [2023-12-21 19:09:26,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 19:09:26,596 INFO L225 Difference]: With dead ends: 144 [2023-12-21 19:09:26,596 INFO L226 Difference]: Without dead ends: 105 [2023-12-21 19:09:26,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-12-21 19:09:26,597 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 27 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 19:09:26,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 28 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 19:09:26,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2023-12-21 19:09:26,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2023-12-21 19:09:26,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 104 states have (on average 1.2019230769230769) internal successors, (125), 104 states have internal predecessors, (125), 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) [2023-12-21 19:09:26,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 125 transitions. [2023-12-21 19:09:26,624 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 125 transitions. Word has length 24 [2023-12-21 19:09:26,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 19:09:26,625 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 125 transitions. [2023-12-21 19:09:26,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 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) [2023-12-21 19:09:26,625 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 125 transitions. [2023-12-21 19:09:26,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-21 19:09:26,627 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 19:09:26,628 INFO L195 NwaCegarLoop]: trace histogram [40, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 19:09:26,639 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-21 19:09:26,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:09:26,832 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 19:09:26,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 19:09:26,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1238679958, now seen corresponding path program 4 times [2023-12-21 19:09:26,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 19:09:26,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1747364723] [2023-12-21 19:09:26,834 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 19:09:26,834 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:09:26,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 19:09:26,835 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 19:09:26,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-21 19:09:27,078 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 19:09:27,078 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 19:09:27,097 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-21 19:09:27,099 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 19:09:27,281 INFO L134 CoverageAnalysis]: Checked inductivity of 996 backedges. 374 proven. 55 refuted. 0 times theorem prover too weak. 567 trivial. 0 not checked. [2023-12-21 19:09:27,281 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 19:09:27,830 INFO L134 CoverageAnalysis]: Checked inductivity of 996 backedges. 374 proven. 55 refuted. 0 times theorem prover too weak. 567 trivial. 0 not checked. [2023-12-21 19:09:27,830 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 19:09:27,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1747364723] [2023-12-21 19:09:27,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1747364723] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 19:09:27,831 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 19:09:27,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-12-21 19:09:27,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305420149] [2023-12-21 19:09:27,831 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 19:09:27,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-21 19:09:27,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 19:09:27,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-21 19:09:27,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2023-12-21 19:09:27,832 INFO L87 Difference]: Start difference. First operand 105 states and 125 transitions. Second operand has 26 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 25 states have internal predecessors, (42), 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) [2023-12-21 19:09:30,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 19:09:30,616 INFO L93 Difference]: Finished difference Result 334 states and 425 transitions. [2023-12-21 19:09:30,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-21 19:09:30,616 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 25 states have internal predecessors, (42), 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 72 [2023-12-21 19:09:30,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 19:09:30,620 INFO L225 Difference]: With dead ends: 334 [2023-12-21 19:09:30,620 INFO L226 Difference]: Without dead ends: 232 [2023-12-21 19:09:30,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=479, Invalid=853, Unknown=0, NotChecked=0, Total=1332 [2023-12-21 19:09:30,625 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 785 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 785 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-21 19:09:30,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [785 Valid, 450 Invalid, 701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-21 19:09:30,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2023-12-21 19:09:30,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 189. [2023-12-21 19:09:30,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 188 states have (on average 1.175531914893617) internal successors, (221), 188 states have internal predecessors, (221), 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) [2023-12-21 19:09:30,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 221 transitions. [2023-12-21 19:09:30,657 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 221 transitions. Word has length 72 [2023-12-21 19:09:30,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 19:09:30,657 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 221 transitions. [2023-12-21 19:09:30,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 25 states have internal predecessors, (42), 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) [2023-12-21 19:09:30,657 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 221 transitions. [2023-12-21 19:09:30,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-21 19:09:30,658 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 19:09:30,658 INFO L195 NwaCegarLoop]: trace histogram [88, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 19:09:30,669 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-21 19:09:30,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:09:30,868 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 19:09:30,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 19:09:30,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1950888810, now seen corresponding path program 5 times [2023-12-21 19:09:30,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 19:09:30,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [894961746] [2023-12-21 19:09:30,870 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 19:09:30,870 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:09:30,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 19:09:30,871 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 19:09:30,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-21 19:09:31,773 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2023-12-21 19:09:31,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 19:09:31,795 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-21 19:09:31,798 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 19:09:32,447 INFO L134 CoverageAnalysis]: Checked inductivity of 4236 backedges. 2679 proven. 254 refuted. 0 times theorem prover too weak. 1303 trivial. 0 not checked. [2023-12-21 19:09:32,447 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 19:09:34,570 INFO L134 CoverageAnalysis]: Checked inductivity of 4236 backedges. 2679 proven. 254 refuted. 0 times theorem prover too weak. 1303 trivial. 0 not checked. [2023-12-21 19:09:34,571 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 19:09:34,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [894961746] [2023-12-21 19:09:34,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [894961746] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 19:09:34,571 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 19:09:34,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 54 [2023-12-21 19:09:34,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387475557] [2023-12-21 19:09:34,571 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 19:09:34,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2023-12-21 19:09:34,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 19:09:34,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2023-12-21 19:09:34,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=679, Invalid=2183, Unknown=0, NotChecked=0, Total=2862 [2023-12-21 19:09:34,573 INFO L87 Difference]: Start difference. First operand 189 states and 221 transitions. Second operand has 54 states, 54 states have (on average 1.4074074074074074) internal successors, (76), 54 states have internal predecessors, (76), 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) [2023-12-21 19:10:21,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 19:10:21,232 INFO L93 Difference]: Finished difference Result 957 states and 1059 transitions. [2023-12-21 19:10:21,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2023-12-21 19:10:21,233 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 1.4074074074074074) internal successors, (76), 54 states have internal predecessors, (76), 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 120 [2023-12-21 19:10:21,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 19:10:21,235 INFO L225 Difference]: With dead ends: 957 [2023-12-21 19:10:21,235 INFO L226 Difference]: Without dead ends: 796 [2023-12-21 19:10:21,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6345 ImplicationChecksByTransitivity, 34.5s TimeCoverageRelationStatistics Valid=4780, Invalid=14126, Unknown=0, NotChecked=0, Total=18906 [2023-12-21 19:10:21,240 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 2034 mSDsluCounter, 2033 mSDsCounter, 0 mSdLazyCounter, 2684 mSolverCounterSat, 509 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2034 SdHoareTripleChecker+Valid, 2091 SdHoareTripleChecker+Invalid, 3193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 509 IncrementalHoareTripleChecker+Valid, 2684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.2s IncrementalHoareTripleChecker+Time [2023-12-21 19:10:21,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2034 Valid, 2091 Invalid, 3193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [509 Valid, 2684 Invalid, 0 Unknown, 0 Unchecked, 14.2s Time] [2023-12-21 19:10:21,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2023-12-21 19:10:21,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 627. [2023-12-21 19:10:21,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 627 states, 626 states have (on average 1.145367412140575) internal successors, (717), 626 states have internal predecessors, (717), 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) [2023-12-21 19:10:21,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 717 transitions. [2023-12-21 19:10:21,332 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 717 transitions. Word has length 120 [2023-12-21 19:10:21,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 19:10:21,332 INFO L495 AbstractCegarLoop]: Abstraction has 627 states and 717 transitions. [2023-12-21 19:10:21,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 1.4074074074074074) internal successors, (76), 54 states have internal predecessors, (76), 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) [2023-12-21 19:10:21,332 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 717 transitions. [2023-12-21 19:10:21,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2023-12-21 19:10:21,336 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 19:10:21,336 INFO L195 NwaCegarLoop]: trace histogram [268, 12, 12, 12, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 19:10:21,346 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-21 19:10:21,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:10:21,546 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 19:10:21,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 19:10:21,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1924240802, now seen corresponding path program 6 times [2023-12-21 19:10:21,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 19:10:21,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1031806050] [2023-12-21 19:10:21,547 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 19:10:21,547 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:10:21,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 19:10:21,548 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 19:10:21,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-21 19:10:24,882 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 26 check-sat command(s) [2023-12-21 19:10:24,883 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 19:10:24,925 INFO L262 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-21 19:10:24,931 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 19:10:25,433 INFO L134 CoverageAnalysis]: Checked inductivity of 39262 backedges. 19255 proven. 276 refuted. 0 times theorem prover too weak. 19731 trivial. 0 not checked. [2023-12-21 19:10:25,434 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 19:10:27,395 INFO L134 CoverageAnalysis]: Checked inductivity of 39262 backedges. 17575 proven. 1956 refuted. 0 times theorem prover too weak. 19731 trivial. 0 not checked. [2023-12-21 19:10:27,396 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 19:10:27,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1031806050] [2023-12-21 19:10:27,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1031806050] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 19:10:27,398 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 19:10:27,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 51 [2023-12-21 19:10:27,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423266169] [2023-12-21 19:10:27,398 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 19:10:27,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-12-21 19:10:27,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 19:10:27,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-12-21 19:10:27,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=726, Invalid=1926, Unknown=0, NotChecked=0, Total=2652 [2023-12-21 19:10:27,400 INFO L87 Difference]: Start difference. First operand 627 states and 717 transitions. Second operand has 52 states, 52 states have (on average 1.5384615384615385) internal successors, (80), 51 states have internal predecessors, (80), 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) [2023-12-21 19:10:40,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 19:10:40,158 INFO L93 Difference]: Finished difference Result 1689 states and 2233 transitions. [2023-12-21 19:10:40,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-12-21 19:10:40,159 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.5384615384615385) internal successors, (80), 51 states have internal predecessors, (80), 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 324 [2023-12-21 19:10:40,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 19:10:40,162 INFO L225 Difference]: With dead ends: 1689 [2023-12-21 19:10:40,162 INFO L226 Difference]: Without dead ends: 1088 [2023-12-21 19:10:40,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 670 GetRequests, 596 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 900 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=1974, Invalid=3726, Unknown=0, NotChecked=0, Total=5700 [2023-12-21 19:10:40,164 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 2650 mSDsluCounter, 1825 mSDsCounter, 0 mSdLazyCounter, 2074 mSolverCounterSat, 692 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2650 SdHoareTripleChecker+Valid, 1902 SdHoareTripleChecker+Invalid, 2766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 692 IncrementalHoareTripleChecker+Valid, 2074 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2023-12-21 19:10:40,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2650 Valid, 1902 Invalid, 2766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [692 Valid, 2074 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2023-12-21 19:10:40,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1088 states. [2023-12-21 19:10:40,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1088 to 926. [2023-12-21 19:10:40,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 926 states, 925 states have (on average 1.1254054054054055) internal successors, (1041), 925 states have internal predecessors, (1041), 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) [2023-12-21 19:10:40,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1041 transitions. [2023-12-21 19:10:40,264 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1041 transitions. Word has length 324 [2023-12-21 19:10:40,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 19:10:40,264 INFO L495 AbstractCegarLoop]: Abstraction has 926 states and 1041 transitions. [2023-12-21 19:10:40,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.5384615384615385) internal successors, (80), 51 states have internal predecessors, (80), 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) [2023-12-21 19:10:40,264 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1041 transitions. [2023-12-21 19:10:40,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 633 [2023-12-21 19:10:40,270 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 19:10:40,270 INFO L195 NwaCegarLoop]: trace histogram [576, 12, 12, 12, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 19:10:40,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-12-21 19:10:40,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:10:40,482 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 19:10:40,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 19:10:40,482 INFO L85 PathProgramCache]: Analyzing trace with hash 2120911638, now seen corresponding path program 7 times [2023-12-21 19:10:40,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 19:10:40,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1495851754] [2023-12-21 19:10:40,484 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 19:10:40,484 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:10:40,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 19:10:40,485 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 19:10:40,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-21 19:10:42,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 19:10:42,994 INFO L262 TraceCheckSpWp]: Trace formula consists of 2987 conjuncts, 51 conjunts are in the unsatisfiable core [2023-12-21 19:10:43,012 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 19:10:44,373 INFO L134 CoverageAnalysis]: Checked inductivity of 172780 backedges. 26430 proven. 1176 refuted. 0 times theorem prover too weak. 145174 trivial. 0 not checked. [2023-12-21 19:10:44,373 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 19:10:50,811 INFO L134 CoverageAnalysis]: Checked inductivity of 172780 backedges. 26430 proven. 1176 refuted. 0 times theorem prover too weak. 145174 trivial. 0 not checked. [2023-12-21 19:10:50,811 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 19:10:50,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1495851754] [2023-12-21 19:10:50,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1495851754] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 19:10:50,811 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 19:10:50,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 101 [2023-12-21 19:10:50,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975165256] [2023-12-21 19:10:50,812 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 19:10:50,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2023-12-21 19:10:50,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 19:10:50,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2023-12-21 19:10:50,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2701, Invalid=7601, Unknown=0, NotChecked=0, Total=10302 [2023-12-21 19:10:50,816 INFO L87 Difference]: Start difference. First operand 926 states and 1041 transitions. Second operand has 102 states, 102 states have (on average 1.1568627450980393) internal successors, (118), 101 states have internal predecessors, (118), 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) [2023-12-21 19:12:04,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 19:12:04,051 INFO L93 Difference]: Finished difference Result 2895 states and 3827 transitions. [2023-12-21 19:12:04,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2023-12-21 19:12:04,052 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 102 states have (on average 1.1568627450980393) internal successors, (118), 101 states have internal predecessors, (118), 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 632 [2023-12-21 19:12:04,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 19:12:04,057 INFO L225 Difference]: With dead ends: 2895 [2023-12-21 19:12:04,057 INFO L226 Difference]: Without dead ends: 2021 [2023-12-21 19:12:04,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1311 GetRequests, 1162 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3675 ImplicationChecksByTransitivity, 57.5s TimeCoverageRelationStatistics Valid=7699, Invalid=14951, Unknown=0, NotChecked=0, Total=22650 [2023-12-21 19:12:04,073 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 9789 mSDsluCounter, 7396 mSDsCounter, 0 mSdLazyCounter, 7894 mSolverCounterSat, 2693 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9789 SdHoareTripleChecker+Valid, 7548 SdHoareTripleChecker+Invalid, 10587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2693 IncrementalHoareTripleChecker+Valid, 7894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.4s IncrementalHoareTripleChecker+Time [2023-12-21 19:12:04,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9789 Valid, 7548 Invalid, 10587 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2693 Valid, 7894 Invalid, 0 Unknown, 0 Unchecked, 22.4s Time] [2023-12-21 19:12:04,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2021 states. [2023-12-21 19:12:04,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2021 to 1826. [2023-12-21 19:12:04,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1826 states, 1825 states have (on average 1.1183561643835616) internal successors, (2041), 1825 states have internal predecessors, (2041), 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) [2023-12-21 19:12:04,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1826 states to 1826 states and 2041 transitions. [2023-12-21 19:12:04,255 INFO L78 Accepts]: Start accepts. Automaton has 1826 states and 2041 transitions. Word has length 632 [2023-12-21 19:12:04,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 19:12:04,256 INFO L495 AbstractCegarLoop]: Abstraction has 1826 states and 2041 transitions. [2023-12-21 19:12:04,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 102 states have (on average 1.1568627450980393) internal successors, (118), 101 states have internal predecessors, (118), 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) [2023-12-21 19:12:04,256 INFO L276 IsEmpty]: Start isEmpty. Operand 1826 states and 2041 transitions. [2023-12-21 19:12:04,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1233 [2023-12-21 19:12:04,284 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 19:12:04,284 INFO L195 NwaCegarLoop]: trace histogram [1176, 12, 12, 12, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 19:12:04,366 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 (12)] Ended with exit code 0 [2023-12-21 19:12:04,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:12:04,496 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 19:12:04,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 19:12:04,497 INFO L85 PathProgramCache]: Analyzing trace with hash -185357418, now seen corresponding path program 8 times [2023-12-21 19:12:04,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 19:12:04,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [571333842] [2023-12-21 19:12:04,500 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 19:12:04,500 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:12:04,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 19:12:04,501 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 19:12:04,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-21 19:12:09,583 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 19:12:09,584 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 19:12:10,147 INFO L262 TraceCheckSpWp]: Trace formula consists of 5987 conjuncts, 101 conjunts are in the unsatisfiable core [2023-12-21 19:12:10,166 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 19:12:14,873 INFO L134 CoverageAnalysis]: Checked inductivity of 705280 backedges. 107830 proven. 4851 refuted. 0 times theorem prover too weak. 592599 trivial. 0 not checked. [2023-12-21 19:12:14,873 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 19:12:40,399 INFO L134 CoverageAnalysis]: Checked inductivity of 705280 backedges. 107830 proven. 4851 refuted. 0 times theorem prover too weak. 592599 trivial. 0 not checked. [2023-12-21 19:12:40,399 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 19:12:40,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [571333842] [2023-12-21 19:12:40,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [571333842] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 19:12:40,399 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 19:12:40,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101] total 201 [2023-12-21 19:12:40,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834543574] [2023-12-21 19:12:40,400 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 19:12:40,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 202 states [2023-12-21 19:12:40,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 19:12:40,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 202 interpolants. [2023-12-21 19:12:40,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10401, Invalid=30201, Unknown=0, NotChecked=0, Total=40602 [2023-12-21 19:12:40,406 INFO L87 Difference]: Start difference. First operand 1826 states and 2041 transitions. Second operand has 202 states, 202 states have (on average 1.0792079207920793) internal successors, (218), 201 states have internal predecessors, (218), 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) [2023-12-21 19:22:02,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 19:22:02,766 INFO L93 Difference]: Finished difference Result 5745 states and 7577 transitions. [2023-12-21 19:22:02,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 201 states. [2023-12-21 19:22:02,767 INFO L78 Accepts]: Start accepts. Automaton has has 202 states, 202 states have (on average 1.0792079207920793) internal successors, (218), 201 states have internal predecessors, (218), 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 1232 [2023-12-21 19:22:02,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 19:22:02,794 INFO L225 Difference]: With dead ends: 5745 [2023-12-21 19:22:02,795 INFO L226 Difference]: Without dead ends: 4021 [2023-12-21 19:22:02,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2561 GetRequests, 2262 SyntacticMatches, 0 SemanticMatches, 299 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14850 ImplicationChecksByTransitivity, 504.5s TimeCoverageRelationStatistics Valid=30399, Invalid=59901, Unknown=0, NotChecked=0, Total=90300 [2023-12-21 19:22:02,817 INFO L413 NwaCegarLoop]: 302 mSDtfsCounter, 40922 mSDsluCounter, 29804 mSDsCounter, 0 mSdLazyCounter, 30804 mSolverCounterSat, 10355 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 74.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40922 SdHoareTripleChecker+Valid, 30106 SdHoareTripleChecker+Invalid, 41159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 10355 IncrementalHoareTripleChecker+Valid, 30804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 83.4s IncrementalHoareTripleChecker+Time [2023-12-21 19:22:02,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40922 Valid, 30106 Invalid, 41159 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [10355 Valid, 30804 Invalid, 0 Unknown, 0 Unchecked, 83.4s Time] [2023-12-21 19:22:02,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4021 states. [2023-12-21 19:22:03,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4021 to 3626. [2023-12-21 19:22:03,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3626 states, 3625 states have (on average 1.1147586206896551) internal successors, (4041), 3625 states have internal predecessors, (4041), 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) [2023-12-21 19:22:03,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3626 states to 3626 states and 4041 transitions. [2023-12-21 19:22:03,234 INFO L78 Accepts]: Start accepts. Automaton has 3626 states and 4041 transitions. Word has length 1232 [2023-12-21 19:22:03,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 19:22:03,235 INFO L495 AbstractCegarLoop]: Abstraction has 3626 states and 4041 transitions. [2023-12-21 19:22:03,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 202 states, 202 states have (on average 1.0792079207920793) internal successors, (218), 201 states have internal predecessors, (218), 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) [2023-12-21 19:22:03,236 INFO L276 IsEmpty]: Start isEmpty. Operand 3626 states and 4041 transitions. [2023-12-21 19:22:03,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2433 [2023-12-21 19:22:03,268 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 19:22:03,269 INFO L195 NwaCegarLoop]: trace histogram [2376, 12, 12, 12, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 19:22:03,437 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-12-21 19:22:03,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:22:03,495 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 19:22:03,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 19:22:03,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1506333546, now seen corresponding path program 9 times [2023-12-21 19:22:03,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 19:22:03,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2071346800] [2023-12-21 19:22:03,501 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 19:22:03,501 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 19:22:03,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 19:22:03,502 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 19:22:03,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process Received shutdown request... [2023-12-21 19:24:01,654 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 [2023-12-21 19:24:01,664 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 [2023-12-21 19:24:02,683 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 [2023-12-21 19:24:02,855 WARN L435 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)] Forcibly destroying the process [2023-12-21 19:24:02,884 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 137 [2023-12-21 19:24:02,886 ERROR L246 FreeRefinementEngine]: Caught known exception: Timeout or Toolchain cancelled by user [2023-12-21 19:24:02,888 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-21 19:24:02,888 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 2433 with TraceHistMax 2376,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [2071346800] and IpTcStrategyModuleCvc4 [524986233]. [2023-12-21 19:24:02,891 INFO L445 BasicCegarLoop]: Path program histogram: [9, 1, 1, 1, 1] [2023-12-21 19:24:02,892 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-21 19:24:02,894 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 07:24:02 BoogieIcfgContainer [2023-12-21 19:24:02,894 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-21 19:24:02,894 INFO L158 Benchmark]: Toolchain (without parser) took 881984.18ms. Allocated memory was 352.3MB in the beginning and 423.6MB in the end (delta: 71.3MB). Free memory was 312.1MB in the beginning and 238.4MB in the end (delta: 73.6MB). Peak memory consumption was 146.0MB. Max. memory is 8.0GB. [2023-12-21 19:24:02,894 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 176.2MB. Free memory is still 126.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 19:24:02,894 INFO L158 Benchmark]: CACSL2BoogieTranslator took 242.75ms. Allocated memory is still 352.3MB. Free memory was 311.7MB in the beginning and 300.5MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-21 19:24:02,894 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.40ms. Allocated memory is still 352.3MB. Free memory was 300.2MB in the beginning and 298.7MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-21 19:24:02,895 INFO L158 Benchmark]: Boogie Preprocessor took 65.68ms. Allocated memory is still 352.3MB. Free memory was 298.7MB in the beginning and 296.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 19:24:02,895 INFO L158 Benchmark]: RCFGBuilder took 482.15ms. Allocated memory is still 352.3MB. Free memory was 296.7MB in the beginning and 283.4MB in the end (delta: 13.3MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-12-21 19:24:02,895 INFO L158 Benchmark]: TraceAbstraction took 881153.34ms. Allocated memory was 352.3MB in the beginning and 423.6MB in the end (delta: 71.3MB). Free memory was 282.7MB in the beginning and 238.4MB in the end (delta: 44.3MB). Peak memory consumption was 116.6MB. Max. memory is 8.0GB. [2023-12-21 19:24:02,896 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 176.2MB. Free memory is still 126.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 242.75ms. Allocated memory is still 352.3MB. Free memory was 311.7MB in the beginning and 300.5MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 35.40ms. Allocated memory is still 352.3MB. Free memory was 300.2MB in the beginning and 298.7MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 65.68ms. Allocated memory is still 352.3MB. Free memory was 298.7MB in the beginning and 296.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 482.15ms. Allocated memory is still 352.3MB. Free memory was 296.7MB in the beginning and 283.4MB in the end (delta: 13.3MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 881153.34ms. Allocated memory was 352.3MB in the beginning and 423.6MB in the end (delta: 71.3MB). Free memory was 282.7MB in the beginning and 238.4MB in the end (delta: 44.3MB). Peak memory consumption was 116.6MB. 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: 7]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 7). Cancelled while NwaCegarLoop was analyzing trace of length 2433 with TraceHistMax 2376,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [2071346800] and IpTcStrategyModuleCvc4 [524986233]. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 881.1s, OverallIterations: 13, TraceHistogramMax: 2376, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.1s, AutomataDifference: 700.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 56623 SdHoareTripleChecker+Valid, 130.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 56623 mSDsluCounter, 42338 SdHoareTripleChecker+Invalid, 116.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 41620 mSDsCounter, 14540 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 44323 IncrementalHoareTripleChecker+Invalid, 58863 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14540 mSolverCounterUnsat, 718 mSDtfsCounter, 44323 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5192 GetRequests, 4464 SyntacticMatches, 0 SemanticMatches, 728 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26022 ImplicationChecksByTransitivity, 606.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3626occurred in iteration=12, InterpolantAutomatonStates: 512, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 12 MinimizatonAttempts, 1008 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 10.8s SatisfiabilityAnalysisTime, 45.6s InterpolantComputationTime, 2478 NumberOfCodeBlocks, 2171 NumberOfCodeBlocksAsserted, 52 NumberOfCheckSat, 4895 ConstructedInterpolants, 0 QuantifiedInterpolants, 7899 SizeOfPredicates, 4 NumberOfNonLiveVariables, 10282 ConjunctsInSsa, 245 ConjunctsInUnsatCore, 20 InterpolantComputations, 4 PerfectInterpolantSequences, 1830327/1845255 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